Commit Graph

26 Commits

Author SHA1 Message Date
Will Pfleger
eed74bde2f feat(buzz-agent): surface stop reason and silent-turn WARN in telemetry (#7038)
## What

Two telemetry additions to make a known silent-death failure mode
visible in harness logs.

**1. `stop` field on `llm: call completed` INFO**
(`crates/buzz-agent/src/llm.rs`)

The `ProviderStop` value was already parsed and stored on `LlmResponse`
but never emitted in the log line. Without it, "model chose `end_turn`"
vs "gateway truncated/refused" is indistinguishable from telemetry
alone.

**2. WARN on silent-turn signature** (`crates/buzz-agent/src/agent.rs`)

Emits a `WARN` when a turn produces no publish, no visible assistant
text, and either near-zero or absent output tokens. The WARN logic is
extracted into `warn_if_silent_turn` (pure synchronous function) so the
seam is testable without the async run loop.

Three independent gates before the WARN fires:
1. **`!buzz_reply_call_seen`** — no publish attempt in any round,
tracked unconditionally via the existing `is_buzz_reply_call` matcher.
Read-only tool calls do NOT suppress the WARN; a turn that ran tools but
never published and died at 3 tokens is still a silent death.
2. **`text_is_empty`** — no visible assistant text in the final round. A
terse reply like "OK" (≤12 tokens, non-empty) is not a silent death.
3. **Token check** — two distinct WARN messages:
- `Some(t) where t <= 12`: near-zero token count, the observed failure
signature (2–12 tokens)
- `None` usage: provider omitted token counts entirely, separately
diagnostic

Tests use a scoped `tracing_subscriber` layer (same pattern as the
existing stall-warn tests in `llm.rs`) to exercise the WARN seam
directly:
- Canonical signature (no publish, no text, 4 tokens) → 1 WARN
- Non-empty assistant text → 0 WARNs
- Publish seen → 0 WARNs
- `None` usage (no publish, no text) → 1 WARN

## Why

Recurring silent-death incident in a specific agent×channel combination:
sessions die with 1 LLM call, 2–12 output tokens, no tool calls, no
message, no error — recorded as a "successful" turn. The harness log
shows the token count but not the `stop_reason`, leaving the root cause
undiagnosable without request-level tracing. The observed shape also
includes tool-step-then-3-token-death (one tool call, then silence) —
the publish-aware gate catches both shapes.

Context thread:
buzz://message?channel=91fd9ca1-cf04-4ef7-b18f-aa2aee55692b&id=e3f1693f2e29f26a0c840f8054d592270c1504beacdc1d9c2063d8ab82960a06

## Scope

Logging and telemetry only. No behavior change, no retry-logic change,
no stop-reason mapping change.

---------

Signed-off-by: Will Pfleger <pfleger.will@gmail.com>
Co-authored-by: Duncan <dcfd242e557282d7a1e2cf2e6877522682f1e5c6156dc92ca7d90eaedd3b0f95@buzz.block.builderlab.xyz>
2026-08-29 19:14:28 -04:00
Will Pfleger
a1219070fa feat(buzz-agent): gate LLM tool calls on session/request_permission (#5712)
## Summary

buzz-agent now authorizes every LLM-issued MCP tool call through
`session/request_permission` before it executes, instead of running
tools unconditionally. The agent **always asks**; the client applies
`BUZZ_ACP_PERMISSION_POLICY` and answers. buzz-agent never reads the
policy — this keeps the policy decision on the client side, matching the
layering of the other ACP harnesses, and avoids duplicating policy logic
that would drift.

### Broker

A crate-local `PermissionBroker`
(`crates/buzz-agent/src/permission.rs`), owned by `App` for the
connection lifetime, owns the full request-correlation lifecycle:

- **Process-wide admission.** A global `Semaphore`
(`BUZZ_AGENT_MAX_PENDING_PERMISSIONS`, default 32, validated `>= 1`) is
acquired *before* any correlation entry is inserted. This is the
security bound: the per-turn tool semaphore is constructed fresh per
turn and `max_sessions` is unbounded by default, so neither bounds
simultaneously-outstanding asks process-wide.
- **Abort-safe cleanup.** A successful admission returns a
`PendingPermission` lease that owns the admission permit and the
correlation id. Its `Drop` synchronously removes the still-pending entry
and releases the slot, covering task abort/panic that bypasses the
normal `run_prompt` tail.
- **At-most-once resolution.** `deliver` claims (removes) the entry
*before* waking the waiter, so each id resolves once and a later lease
`Drop` is a no-op. Unknown/late ids are logged and dropped; only ids the
broker minted (`perm-<n>`) are recognized.
- **Single absolute deadline.** Admission, request enqueue, and response
wait all share one deadline (`BUZZ_AGENT_PERMISSION_TIMEOUT_SECS`,
default 330s, validated `>= 1`), so a saturated call cannot outlive one
timeout window even when a stalled writer blocks the enqueue.
Cancellation races inside every wait — resolution never depends on the
outer abort drain. A writer that dies mid-connection (stdout closed, or
a blocking write that only surfaces its error at flush) is
connection-fatal: it cancels all sessions, which resolves any ask
waiting on a reply that can never be written.

### Wire

`request_permission_params` (`crates/buzz-agent/src/wire.rs`) is
version-aware, keyed on the protocol version negotiated at `initialize`
and stored on `App` for the connection lifetime (never derived from a
later mutable session field). v2 nests the tool call under `subject:
{type: "tool_call", toolCall}` with top-level `title`/`options`; v1 uses
the legacy top-level `toolCall`. No hybrid shape. Both offered options
(`allow_once`, `reject_once`) carry `optionId == kind`, so the client's
`kind`-based selection and this side's `optionId`-based predicate agree
without a lookup table.

### Gate

In each spawned tool task (`crates/buzz-agent/src/agent.rs`) the
sequence is: acquire per-turn permit → argument-shape validation →
broker admission + request + wait → cancellation recheck →
`emit_in_progress` → `mcp.call`. Argument-shape validation is hoisted
out of `mcp.rs::do_call` into `validate_arg_shape` so a malformed
non-object argument is rejected locally without prompting for a call
that could never execute.

Authorization is fail-closed, stated once in `evaluate`: execute IFF
`outcome.outcome == "selected"` **and** the selected `optionId` equals
the offered allow option. Every other shape (reject, cancelled, JSON-RPC
error, malformed, unknown outcome, wrong/unknown option, timeout,
wire-channel closure) denies with a synthetic tool error, and the turn
continues.

### Scope

Only LLM-issued MCP calls are gated. The built-in `load_skill` tool and
`call_hooks` lifecycle calls (`_Stop`, `_PostCompact`) are exempt — they
are not model-issued. `readOnlyHint` is never treated as a security
boundary.

First cut ships `allow_once`/`reject_once` only; session-scoped grants
are deliberately out of scope.

### Related issue

Part of #4938. This PR and
[#5106](https://github.com/block/buzz/pull/5106) jointly implement the
feature: #5106 is the client-side policy engine and permission cards;
this PR is buzz-agent's asking side (`session/request_permission`).
Neither closes #4938 alone.

---------

Signed-off-by: Will Pfleger <pfleger.will@gmail.com>
Co-authored-by: Hayt <41ea58f1e64c243627e8acde7c89be667052ee6e17d8f021c1195be4324ebf04@buzz.block.builderlab.xyz>
Co-authored-by: Duncan <dcfd242e557282d7a1e2cf2e6877522682f1e5c6156dc92ca7d90eaedd3b0f95@buzz.block.builderlab.xyz>
2026-08-25 11:49:07 -04:00
Atish Patel
72d56e7bd3 fix(agent): raise output limit and allow 3 recoveries (#5475)
## Summary

Raise the built-in output and recovery defaults so long-running agents
have more room to finish useful work instead of terminating after
repeated 32,768-token reasoning-only responses.

- Raise `BUZZ_AGENT_MAX_OUTPUT_TOKENS` from 32,768 to 65,536
- Raise the finite output-truncation recovery allowance from 2 to 3 via
`BUZZ_AGENT_MAX_TOKEN_RECOVERIES`; `0` still disables recovery
- Strengthen the recovery prompt so the model stops prolonged reasoning,
uses tools immediately, and builds scripts or artifacts in small
verifiable steps
- Preserve the safety invariant that incomplete truncated tool calls are
discarded and never executed
- Keep proactive handoff independently at 90% of
`BUZZ_AGENT_MAX_CONTEXT_TOKENS` (180,000 tokens with the 200,000
default), regardless of the output allowance
- Add request-loop and configuration regressions for exact-N recovery,
disabled recovery, successful tool-first recovery, discarded truncated
calls, and finite round bounds

`BUZZ_AGENT_MAX_OUTPUT_TOKENS` remains an explicit per-agent deployment
setting. Operators should configure it at or below the served model's
output limit; this PR does not perform live provider capability
discovery or automatic clamping.

**Risk:** Medium — this increases the default request size and permits
one additional recovery attempt by default. Recovery remains finite and
bounded by `BUZZ_AGENT_MAX_ROUNDS`. Deployments whose served model
rejects 65,536 output tokens must set a lower per-agent value.

Current output limits
- model - output token max
- DeepSeek V4 Flash - 384,000 tokens
- Qwen 3.8 (Max) - 131,072 tokens
- GLM 5.2 - 131,072 tokens
- GPT 5.6 - 128,000 tokens
- Claude Opus 5 - 128,000 tokens
- Gemini 3.6 Flash - 65,536 tokens
- Kimi K3 (Moonshot)- 131,072 tokens

### Related issue

None found. Originating benchmark analysis:
`buzz://message?channel=c3252dd2-0142-4e01-88c7-a2183c3960a5&id=91e991aab5fd49094583c3937477f6c12db57a41d86edf7fd4745d0d57d10017`

### Testing

- `cargo fmt --all -- --check`
- `cargo test -p buzz-agent` — 595 passed, 0 failed, 0 ignored at
`bd6de557b367850f50325bafdd3c046131942bef`
- `cargo clippy -p buzz-agent --all-targets -- -D warnings`
- Previously failing
`cancelled_turn_with_usage_emits_notification_before_response` passed
alone and in the full rerun
- Push hooks passed: organization guard, branch skew, Rust tests, and
Desktop Tauri checks

### Update — 2026-08-11

Per review feedback, the recovery default is 3. The OpenRouter live
`/models` output-cap discovery, cache, request clamp, and related
tests/documentation were removed. Per-agent output configuration is now
the sole output-cap mechanism. Proactive handoff and its pre-usage byte
fallback now depend only on 90% of `BUZZ_AGENT_MAX_CONTEXT_TOKENS`; with
the 200,000 default, the handoff threshold is 180,000 regardless of
`BUZZ_AGENT_MAX_OUTPUT_TOKENS`.

Generated with Brainy Bumble


### Targeted validation — 2026-08-11

Ran the exact PR binary once on each of the 11 benchmark tasks causally
affected by the previous 32,768-token ceiling, using OpenRouter with
`deepseek/deepseek-v4-flash-0731` pinned to Fireworks and maximum
reasoning effort. Relay-429 collection failures were excluded and rerun
at concurrency 2.

- **6/11 passed:** `circuit-fibsqrt`, `feal-linear-cryptanalysis`,
`model-extraction-relu-logits`, `path-tracing`,
`schemelike-metacircular-eval`, and `sqlite-db-truncate`
- **5/11 reached the benchmark deadline:** `adaptive-rejection-sampler`,
`dna-assembly`, `path-tracing-reverse`, `regex-chess`, and
`write-compressor`
- `regex-chess` reached exactly 65,536 output tokens, triggered one
output-limit recovery, and then reached the deadline. This directly
confirms that the larger ceiling and recovery path were active, but not
that recovery guarantees completion.

For context, ten of these tasks were 0/5 in the historical baseline;
`sqlite-db-truncate`, the clean control, was 4/5. This is targeted
one-attempt-per-task validation rather than a statistically powered
comparison. The result should not be attributed solely to the recovery
default of 3: this PR also raises the output ceiling and strengthens
recovery behavior, and OpenRouter routing conditions may differ from the
historical direct-Fireworks runs.

Generated with Brainy Bumble

---------

Signed-off-by: Atish Patel <atish@squareup.com>
Signed-off-by: Brainy Bumble <0ed7657b57c0e8a9f5288390dd6c8d5d0a3a06abe9b01b9006814f52077d6cdf@buzz.block.builderlab.xyz>
Signed-off-by: Hardworking Honey <c5c455215c2506cb8ba776518cec804af62d3a0526e32d496a22072e395042b9@buzz.block.builderlab.xyz>
Co-authored-by: Brainy Bumble <0ed7657b57c0e8a9f5288390dd6c8d5d0a3a06abe9b01b9006814f52077d6cdf@buzz.block.builderlab.xyz>
Co-authored-by: Hardworking Honey <c5c455215c2506cb8ba776518cec804af62d3a0526e32d496a22072e395042b9@buzz.block.builderlab.xyz>
2026-08-12 16:57:11 -04:00
Will Pfleger
5e4c05f90b feat(desktop): NIP-AM agent-usage backend — P2 emission/transport/archive + P4a aggregation/D6 (#4000)
## What

Implements Phases 2 and 4a of the Usage v2 plan (plan events
`d0268cd0`/`0e95b035`), extending the archive backend to emit,
transport, archive, and aggregate both cache categories and billing
identity fail-closed.

### P2 — emission, transport, archive

**Tri-state accumulators** (`Unseen`/`Exact`/`Unknown`) for cache-read
and cache-write in `buzz-agent` turn and session state. Absent field =
Unknown (never zero) through the full pipeline. No `unwrap_or(0)` on the
cache path. Both cache folds are gated on usage-bearing responses (same
gate as the total-state and identity folds) — a response with no usage
at all must not poison either accumulator.

**Overflow-aware input token parsing and accumulation** — closed
end-to-end from parse through wire to ACP:
- `sum_usage()` returns `SumUsageResult` (`Exact(u64)` | `Overflow`) —
checked arithmetic, never clamps. `anthropic_input_tokens()` returns
`Option<SumUsageResult>` since it sums three fields (`input_tokens +
cache_read_input_tokens + cache_creation_input_tokens`) that can
collectively overflow. Single-field callers (`prompt_tokens`,
`completion_tokens`, etc.) convert via `.into_exact()` — their
single-field sums cannot overflow.
- `LlmResponse.input_tokens_overflowed: bool` propagates the parse-layer
signal into the run loop. When set, `input_tokens` is `None` (clamped
value discarded), the context-gate baseline
(`last_request_input_tokens`) is frozen at its prior reading, and
`turn_input_tokens` is poisoned to `TurnIOState::Poisoned` before any
emission — including mid-turn `emit_usage_update` calls. A dedicated
enum on `LlmResponse.input_tokens` would ripple into ~20 existing test
assertions on `r.input_tokens == Some(...)`; the bool flag confines the
change to the two call sites that check it.
- `TurnIOState` (`Unseen`/`Exact`/`Poisoned`) for input and output:
per-round fold uses `checked_add`; overflow poisons permanently at turn
and session level, no healing. Absence does not poison (pass-2-cleared
contract unchanged). Wire emission omits
`accumulatedInputTokens`/`accumulatedOutputTokens` when poisoned — never
null, never `u64::MAX`. ACP treats absent = publisher-poisoned:
`delta_reliable: false`, null turn fields, null cumulative for that
category; session cumulative stays unknown for all subsequent turns once
poisoned.

**Conditional wire emission** for `accumulatedCachedInputTokens` and new
`accumulatedCacheWriteTokens`: fields are omitted when the cumulative is
Unseen or Unknown. ACP `_goose/unstable/session/update` contract
documented next to the payload with tests for all absence/zero variants.

**`PricingIdentity` stamping (publisher-side)**:
- `pricing_authority()`: canonical parsed-URL endpoint comparison
against the official allowlist — HTTPS only, exact allowlisted host
(lookalike-safe), default port (omitted or explicit :443), required API
base path, rejects userinfo/query/fragment/path-prefix lookalikes.
- Model: the actually-requested `request_model` after mesh/auto
resolution (not `effective_model_str`).
- Turn discipline: identity retained only while ALL usage in the current
turn carries one identical proven identity; any mismatch,
unproven-usage-bearing response, or unpaired cumulative snapshot poisons
to absent; a later matching notification does not heal a mixed turn.

**ACP `UsageTracker` identity fold**: per-in-flight-turn tri-state
identity accumulator replacing last-update-wins. Any absent identity on
a token-advancing notification or exact mismatch poisons to absent;
poison survives later updates; reset in `begin_turn()`/`take()`; reset
also when a request fails (baseline cleared so preflight gate cannot
stay frozen sub-threshold on retries).

**M3 migration**: adds `turn_cache_write_tokens`,
`cumulative_cache_write_tokens`, `pricing_authority`, `pricing_model`,
`pricing_cache_class` to `agent_metric_index`. Additive, idempotent,
guarded per-column by marker. M2 migration also guarded per-column (turn
and cumulative cache-read columns checked and added independently;
marker commits only after both are present). Fresh-DB schema includes
all columns.

**First-turn baselines**: `seed_zero_baseline` seeds `last_input:
Some(0)`, `last_output: Some(0)`, `last_cached_input: Some(0)`,
`last_cache_write: Some(0)`, and `last_total: Some(0)` — all have the
known-zero-at-spawn argument. Absent fields from incoming snapshots
still produce unknown (tri-state unchanged). Sessions buzz-acp did not
spawn (no seed) remain fail-closed on turn one.

**`ReportedUsage` TS mirror**: `cacheReadTokens`, `cacheWriteTokens`,
`freshInputTokens` added to `tauriArchive.ts` as `UsageField` members,
field-for-field with the Rust struct.

### P4a — aggregation layer

**Extended S-1 ladder** to cache-read and cache-write via the same
`ladder_token` path as the existing token fields.

**`freshInputTokens` derivation**: checked arithmetic, fail-closed —
absent cache fields produce Unknown (not zero), overflow and
`cacheRead+cacheWrite > input` both produce `incomplete: true`.
Aggregated as a `UsageField`.

**D6 comparator**: `sort_value()` = provider total when known, else
`input+output` when both known, else `None` (unknown-last). Replaces the
prior total-only comparator for both agent-level and model-level sort.
Ships a pinned test vector that the TS render layer (P5) must match.

## Test coverage

- `buzz-agent`: 440 lib + 15 integration (golden_transcripts) — includes
13 new `cache_total_state_tests`; 14 new `turn_io_state_tests`; 3 new
`sum_usage_*` tests (exact single-field, exact two-field, overflow
signals correctly); 3 new `parse_anthropic_*` tests (overflow flag set +
value cleared, normal sum no flag, absent usage no flag); end-to-end
golden transcript drives real subprocess with Anthropic-shaped
`input_tokens: u64::MAX, cache_read: 1` response and asserts
`accumulatedInputTokens` absent from the emitted `usage_update` — no
logic duplication; 3 wire pin tests; 4 `fold_pricing_identity_*` tests;
`pricing_authority()` explicit-:443 acceptance
- `buzz-acp`: 700 tests (691 lib + 9 integration) — 4 new usage tests
(absent input → unreliable+null; absent output → unreliable+null;
goose-shaped both present unchanged; poison mid-session); 3 ACP behavior
tests; 7 pool lifecycle tests
- Desktop (Rust): 2259+ tests — 14 new P4a pinned tests; 2 M3 round-trip
tests; 1 serde key-shape test; 2 M2 partial-schema migration tests;
first-turn cache round-trip test

## Related PRs

- P1 NIP-AM spec: [#4632](https://github.com/block/buzz/pull/4632)
- P3 pricing table: [#4629](https://github.com/block/buzz/pull/4629)
- UI (P5): [#4001](https://github.com/block/buzz/pull/4001)

---------

Signed-off-by: Will Pfleger <pfleger.will@gmail.com>
Signed-off-by: Duncan <dcfd242e557282d7a1e2cf2e6877522682f1e5c6156dc92ca7d90eaedd3b0f95@buzz.block.builderlab.xyz>
Co-authored-by: npub1mn7jgtj4w2pd0g0zeuhxsa6jy6p0rewxz4kujt98my82ahfmp72sxjexk7 <dcfd242e557282d7a1e2cf2e6877522682f1e5c6156dc92ca7d90eaedd3b0f95@buzz.block.builderlab.xyz>
2026-08-10 10:47:37 -04:00
Tyler
2b873cf208 Recover from max-token response truncation (#5223)
## Summary

- treat provider `max_tokens` as an interrupted assistant response and
continue the same turn with actionable feedback
- discard tool calls from truncated responses, including malformed
partial arguments, so they are neither executed nor replayed with
invalid tool-result pairing
- bound recovery to two retries while preserving normal finite
`max_rounds` accounting

## Verification

- `cargo fmt --all -- --check`
- `cargo test -p buzz-agent` (422 unit tests plus all package
integration/doc suites passed)
- `cargo clippy -p buzz-agent --all-targets -- -D warnings`

## Notes

The pre-push repository-wide hook also ran. Its Rust tests passed (2,270
passed, 14 ignored), but its `buzz-db` unit-test build was blocked
because local rustc 1.89 is below sqlx 0.9's rustc 1.94 requirement. The
affected package suite above is green on the exact pushed commit.

Originating Buzz channel: `c3252dd2-0142-4e01-88c7-a2183c3960a5`

Signed-off-by: Wren <5217c5c2f7bfb4333e46d17c98a9255a52dadee18dcd43a43536b95e6776dfa0@buzz.block.builderlab.xyz>
Co-authored-by: Wren <5217c5c2f7bfb4333e46d17c98a9255a52dadee18dcd43a43536b95e6776dfa0@buzz.block.builderlab.xyz>
2026-08-07 15:56:48 -04:00
Will Pfleger
742e8d1197 fix(buzz-agent): Responses reasoning summary, Anthropic display:summarized, ACP v2 messageId (#5195)
Three pre-existing gaps in the buzz-agent observer feed fixed together
per Will's ruling ("all 3 in the current PR"):

1. **OpenAI/DBv2-GPT route** — `responses_body` never requested
`reasoning.summary`; GPT-family models billed thinking tokens but
returned `summary: []`.
2. **Anthropic/DBv2-Claude route** — `anthropic_thinking_config()` never
sent `thinking.display`; newest Claude models (Opus 5, Sonnet 5, Fable
5, Mythos 5, Opus 4.7/4.8, Mythos Preview) default to
`display:"omitted"`, returning thinking blocks with an empty `thinking`
field — observer rendered nothing.
3. **ACP v2 compliance** — buzz-agent negotiates ACP v2 but emitted
`agent_thought_chunk` and `agent_message_chunk` without `messageId`,
which ACP v2's `ContentChunk` requires (`messageId` + `content` both
required at schema head `d13d1baa`).

## Changes

**`crates/buzz-agent/src/config.rs`**
- New `ThinkingSummary` enum (`Auto`/`Concise`/`Detailed`) with
`BUZZ_AGENT_THINKING_SUMMARY` env var (default `Auto`); mirrors
`BUZZ_AGENT_THINKING_EFFORT` pattern
- `anthropic_thinking_config()` now emits `"display": "summarized"` in
both the adaptive shape and the manual-budget shape whenever thinking is
enabled
- Rewrote `is_adaptive_thinking_model` and `anthropic_thinking_config`
doc comments to match Anthropic's exact three-way per-model terminology
(doc:
https://platform.claude.com/docs/en/build-with-claude/thinking-troubleshooting#supported-models):
- Opus 4.6/4.7/4.8, Sonnet 4.6: **Off** — thinking OFF by default;
`type:"adaptive"` required to enable
- Opus 5, Sonnet 5: **On** — thinking on by default, can be disabled; we
still send `type:"adaptive"` to activate `output_config.effort`
- Fable 5, Mythos 5, Mythos Preview: **Always on** — thinking cannot be
disabled; we still send `type:"adaptive"` to activate
`output_config.effort`

**`crates/buzz-agent/src/llm.rs`**
- `responses_body` emits `reasoning.summary` alongside
`reasoning.effort` when effort is set (gated — no bare
`reasoning:{summary}` without effort)
- Covers both the pure-OpenAI Responses path and the DBv2 GPT-family
Responses path

**`crates/buzz-agent/src/agent.rs`**
- `agent_thought_chunk` carries `"messageId":
format!("{run_id}-thought-{round}")`
- `agent_message_chunk` carries `"messageId":
format!("{run_id}-message-{round}")`
- The two IDs are distinct (thought and assistant are two logical
messages per the ACP v2 Message ID RFD)
- `run_id` is a fresh random token per `session/prompt` invocation so
IDs are session-unique across multiple prompts

**`crates/buzz-agent/src/lib.rs`**
- `run_id` plumbed into `RunCtx` (was already generated in `run_prompt`,
just not threaded through)

**`crates/buzz-agent/tests/golden_transcripts.rs`**
- `test_acp_v2_chunks_carry_message_id` — negotiates v2, drives two
consecutive `session/prompt` calls, asserts: both chunk types carry
non-empty `messageId`; thought and message IDs are **distinct**; IDs do
**not** recur across the two prompts in the same ACP session

**`desktop/src-tauri/src/managed_agents/env_vars.rs`**
- `BUZZ_AGENT_THINKING_SUMMARY` added to `is_safe_to_reveal` allowlist

**`desktop/src-tauri/src/commands/agent_config_tests.rs`**
- Tests for `BUZZ_AGENT_THINKING_SUMMARY` allowlist entry
(case-insensitive)

## Tests added

- `parse_thinking_summary_round_trips_all_values`
- `parse_thinking_summary_unset_and_empty_yield_auto`
- `parse_thinking_summary_is_case_insensitive`
- `parse_thinking_summary_rejects_unknown_value`
- `thinking_summary_as_str_mapping`
- `responses_body_summary_present_iff_effort_set`
- `responses_body_emits_configured_summary_mode`
- `responses_body_concise_summary_mode`
- `anthropic_thinking_config_adaptive_emits_display_summarized`
- `anthropic_thinking_config_manual_budget_emits_display_summarized`
- `test_acp_v2_chunks_carry_message_id` (integration test — two-prompt
cross-session case)

## Notes

- **DBv2 gateway parity for `display`**: unverified — the DBv2 Claude
route proxies Anthropic Messages shape, but whether the gateway passes
`thinking.display` through is not confirmed. Flagged here rather than
blocking on it.
- buzz-acp and Desktop TS are unchanged — they already parse `messageId`
as optional and will pick it up from the wire automatically.
- Chat Completions and OpenRouter paths: untouched.

---------

Signed-off-by: Will Pfleger <pfleger.will@gmail.com>
Co-authored-by: Duncan <dcfd242e557282d7a1e2cf2e6877522682f1e5c6156dc92ca7d90eaedd3b0f95@buzz.block.builderlab.xyz>
2026-08-07 13:45:43 -04:00
Will Pfleger
346ae8cadc fix(buzz-agent): escalate LLM timeouts per retry and log per-call latency (#5130)
Non-streaming LLM calls (`"stream": false`) through slow model/provider
combinations routinely take longer than the fixed
`BUZZ_AGENT_LLM_TIMEOUT_SECS` window (default 240 s) to return their
first response byte. The retry loop then re-ran the identical 240 s bet
three times, failed the turn, and the ACP harness requeued the whole
turn from scratch: agents spent 30+ minutes producing nothing while
every attempt died at the same wall. And because the LLM path only
logged WARN lines on failure, a healthy-but-slow call was
indistinguishable from a wedged one.

### Timeout handling

- **Per-attempt escalation**: the per-request budget doubles after each
timeout failure (`base × 2^n`, capped at `max(1200 s, base)` —
`escalated_timeout()` in `llm.rs`), shared by the main `post()` loop and
`openrouter_post()`. Non-timeout retryables (429/5xx/connect) do not
escalate. A call that needs six minutes now succeeds on a later attempt
instead of never.
- **Per-request total timeouts**: enforcement moved from the
client-level `read_timeout` to `RequestBuilder::timeout()` on each LLM
request, so escalated budgets aren't silently floored by the shared
client and each attempt's bound covers connect through body completion.
Timeout error messages were updated to match the new semantics and still
point at `BUZZ_AGENT_LLM_TIMEOUT_SECS`.

### Observability

- One INFO line per completed LLM call: model, provider, `duration_ms`,
`input_tokens`, `cached_input_tokens`, `output_tokens`. Slowness and
prompt-cache effectiveness are now visible in harness logs without
waiting for a failure, and `None` vs `0` token reports stay
distinguishable. Handoff summarization calls log the same line with
duration only.
- The agent main loop wraps the call in a `session_id` tracing span so
each line is attributable to a session.

---------

Signed-off-by: Will Pfleger <pfleger.will@gmail.com>
2026-08-07 11:45:39 -04:00
Will Pfleger
ed4b3e7afa fix(buzz-agent): recover from context-window 400s instead of sticking (#4946)
Provider `context_length_exceeded` 400s permanently wedged agent
sessions: the turn errored, the oversized history persisted in the
in-memory session, and the usage baseline stayed frozen at the last
successful sub-threshold reading (failed requests report no usage), so
the preflight handoff gate never fired again — every later prompt failed
identically until an agent restart. The byte-truncation fallback never
intervened because it is a request-body limiter (`estimated_bytes`), not
a context-window defence; at context-window scale it is a measured
no-op.

This adds the reactive recovery path:

- **Typed classification.** `AgentError::LlmContextExceeded` is
classified at both non-success provider terminals — the shared `post()`
(Anthropic, OpenAI, Databricks) and `openrouter_post()` — on `status ==
400` plus a context-window body match, so ordinary 400s stay terminal.
- **Forced handoff.** A context-400 forces a summarize-handoff that
bypasses `should_handoff()` and `BUZZ_AGENT_MAX_HANDOFFS`, bounded by
its own per-turn budget (`MAX_CONTEXT_RECOVERIES_PER_RUN = 3`).
- **Shrink ladder.** The summarize prompt budget halves from the
observed rejected history size — not from `max_context_tokens`, the
number the provider just contradicted — rung to rung, with a 4096-byte
floor. A summarize call rejected for the same reason takes the next rung
instead of re-sticking. At the floor (overflow dominated by unshrinkable
frame: system prompt, tool schemas, live prompt) recovery is refused and
the provider error surfaces clearly instead of self-healing.
- **Baseline reset.** The stale usage baseline is cleared when a request
fails, so the preflight gate cannot stay frozen sub-threshold on
retries.

Named behavior changes:

1. **Anthropic and OpenRouter errors now carry the `(model)` stamp.**
Provider arms return their `Result` into the central error mapper
instead of early-returning past it, making the code match its documented
single-convergence contract at that mapper.
2. **`max_rounds` now counts completions the loop acts on.** A request
rejected with a context-400 that is then successfully recovered refunds
its round before the retry, paired 1:1 with a consumed recovery rung, so
the round cap is neither weakened nor able to drop a recovered turn
unanswered.

Related: #4805 — the complementary proactive fix (per-session
handoff-cap kill switch that let sessions grow to the provider wall).
#4805 prevents reaching the wall; this PR recovers at it.

---------

Co-authored-by: npub17jjz49l9jjmhhk7cac63j8yt9z555n9cw8vk7v5jz4vzw4ppld5qgj57cc <f4a42a97e594b77bdbd8ee35191c8b28a94a4cb871d96f32921558275421fb68@buzz.block.builderlab.xyz>
Co-authored-by: Duncan <dcfd242e557282d7a1e2cf2e6877522682f1e5c6156dc92ca7d90eaedd3b0f95@buzz.block.builderlab.xyz>
2026-08-05 16:58:25 -04:00
Will Pfleger
6df7eba24d fix(buzz-agent): scope handoff cap per turn, not per session lifetime (#4805)
`BUZZ_AGENT_MAX_HANDOFFS` compared against the session-cumulative
`handoff_count` (persisted across prompts). After N handoffs a
long-lived session hit the cap permanently: `maybe_handoff()` returned
`Skipped` on every subsequent prompt, the 16 MiB byte-truncation
fallback never bound before a 1M-token provider wall, and the session
wedged on the first 400 with no recovery path. Thufir's session log
shows 8 days of cap-forced truncation before the first
`context_length_exceeded` 400.

The fix replaces the session-level cap comparison with a local
`handoff_attempts` counter constructed at the start of `run()` and
passed into `maybe_handoff()`. The counter resets on every
`session/prompt` turn so `BUZZ_AGENT_MAX_HANDOFFS` caps compaction loops
within a single turn while allowing unbounded compactions across a
session's lifetime. The session-cumulative `handoff_count` is retained
for log context only and is not reset. Steer-driven rounds share the
per-turn budget automatically since steers inject into the running
`run()` loop, not a new call.

- Move `handoff_attempts` increment to before `summarize()` so failed,
empty, and cancelled summarize calls each consume one budget slot — the
cap cannot be bypassed by a repeatedly-failing summarizer
- Upgrade cap-forced `Skipped` from `INFO` to `WARN`; add structured
fields for `session_id`, attempt count, projected tokens, and threshold
so the cap→wall pairing is attributable per session
- Document `max_handoffs` in `config.rs` as a per-`session/prompt`-turn
bound
- Three new behavioral regression tests: per-turn reset proven across
two separate turns; within-turn cap proven via multi-round tool-call
turn; failed summarize proven to burn the attempt budget

Note: this is the proactive half of the context-window fix. The reactive
`context_length_exceeded` 400 recovery path is owned by Sami's branch
(`buzz-ctxfix-sami`, Tyler's crew); this PR is intended to land after
that one.

---------

Signed-off-by: Will Pfleger <pfleger.will@gmail.com>
Co-authored-by: npub1mn7jgtj4w2pd0g0zeuhxsa6jy6p0rewxz4kujt98my82ahfmp72sxjexk7 <dcfd242e557282d7a1e2cf2e6877522682f1e5c6156dc92ca7d90eaedd3b0f95@buzz.block.builderlab.xyz>
2026-08-05 15:30:04 -04:00
Tyler
8a7eb8d3d7 fix(agent): recover from unsupported image input instead of poisoning the turn (#4896)
## Problem

`buzz-dev-mcp` advertises `view_image` to every agent regardless of
whether the session's model accepts images. When a text-only model (e.g.
DeepSeek V4 Flash) takes the bait, the image lands in session history
and every subsequent LLM request 404s with `No endpoints found that
support image input`. The error was classified as `LlmModelNotFound` and
propagated fatally out of the turn loop — history stays poisoned,
buzz-acp retries the batch with exponential backoff, and the session
burns its entire clock doing no work. In a recent trial run, **all 57
trials that called `view_image` on a text-only model died this way; none
recovered.**

## Fix

Capability-gating the advertised tool isn't reliable — there is no
image-capability metadata at the agent layer across providers. Instead,
recover at the turn loop:

- **Typed error**: new `AgentError::UnsupportedImageInput`, classified
narrowly on the exact provider phrase `No endpoints found that support
image input` on both the generic 404 path and OpenRouter's 404 path.
Unknown-model 404s and OpenRouter parameter-routing 404s keep their
existing classifications. No deterministic retry.
- **In-turn recovery**: on this error, `RunCtx::run` strips every image
block from history — keeping the tool result (and therefore
tool-call/result pairing) intact — marks the result `is_error`, appends
actionable model-facing guidance ("The current model does not support
image input. The image was removed from conversation history so this
turn can continue. Use a text-based inspection tool…"), and continues
the same turn. Base64 never replays again.
- **Loop guard**: recovery only fires when at least one image was
removed; if the provider says "image" and history has none, the error
propagates as before.

## Tests

- Unit: phrase classification (typed, not retried; unknown-model 404
unaffected), idempotent image-to-error history mutation preserving call
IDs and text.
- End-to-end (`fake_llm.rs` + `fake_mcp.rs`): tool call → MCP image
result → 404 unsupported-image → same-turn recovery. Captured requests
prove round 2 carried the image, round 3 replays no image, carries the
guidance text, preserves pairing, and ends `end_turn`.
- Loop guard: typed unsupported-image error with **no** image in history
fails after exactly one provider request instead of spinning —
mutation-testing showed deleting the `removed == 0` guard survived the
suite, and `max_rounds` defaults to unlimited in production, so this
branch needed direct coverage.

Verified at `a210305019b33d5f56677b4c82bab79e4ac52d24`: `cargo test -p
buzz-agent` (full package, 381 unit + all integration suites) green;
`clippy --all-targets -D warnings` green; `fmt --check` green; pre-push
hooks (rust-tests, desktop-tauri-checks, branch-skew) green.

**Scope of the classification guarantee**: the classifier runs in the
shared `post()` (which Anthropic and OpenAI paths route through) and in
`openrouter_post()` — i.e., every 404 path in `llm.rs`. It only runs on
404 responses; providers that reject images with a different status
(e.g. a 400) are out of scope for this PR — see the review-comment
discussion for why broadening the phrase list alone would not cover
them.

Authored by Wren, loop-guard test by Sami, reviewed by Eva.

---------

Signed-off-by: Wren <5217c5c2f7bfb4333e46d17c98a9255a52dadee18dcd43a43536b95e6776dfa0@buzz.block.builderlab.xyz>
Signed-off-by: Sami <f4a42a97e594b77bdbd8ee35191c8b28a94a4cb871d96f32921558275421fb68@buzz.block.builderlab.xyz>
Co-authored-by: Wren <5217c5c2f7bfb4333e46d17c98a9255a52dadee18dcd43a43536b95e6776dfa0@buzz.block.builderlab.xyz>
Co-authored-by: Sami <f4a42a97e594b77bdbd8ee35191c8b28a94a4cb871d96f32921558275421fb68@buzz.block.builderlab.xyz>
2026-08-05 11:51:05 -04:00
Atish Patel
09c86c56e5 fix: report agent usage per provider round, not once per turn (#4545)
## The bug

buzz-agent emitted its `usage_update` notification in exactly one place:
after `ctx.run()` returned. Until that moment a turn's token counters
lived only in the prompt task's stack frame. **A turn killed mid-flight
reported nothing at all** — the provider had already billed every round
it completed, and no consumer ever saw any of it.

That is not a corner case for anything that ends a turn on a clock. It
is the normal case for a long-horizon benchmark run that relaunches its
agent between phases.

## How big

Measured against a provider's own billing ledger over one run's window:

| | provider ledger | what we recorded |
|---|---|---|
| the relaunched lead seat | $485 / 348M tok | $98.99 / 90.3M tok |
| the two seats that were not relaunched | $29.90 / 856M | $25.81 / 765M
— reconciles |

97% of that run's usage rows came back all zeros, against 1–4% for
comparable runs that never relaunch. In one 450-phase trial exactly 7
phases recorded any usage — and each of those carries 177k–437k input
tokens, a whole session's worth landing in the one phase that happened
to end gracefully.

Worth being precise about what was *not* wrong, since both were
plausible and both were checked:

- **Not pricing.** The rates were verified against the provider's
endpoints API and match what we charge.
- **Not a truncation bug.** The usage files were intact and internally
consistent. The tokens were never captured in the first place.

## The fix

The run loop now emits a session-cumulative `usage_update` after every
usage-bearing provider response, so an interrupted turn has reported
everything but its single in-flight request.

- **Emitting more than once per turn is already part of the contract.**
buzz-acp's `UsageTracker` advances its committed baseline only at
publish time, and goose behaves the same way — which is why the tracker
was written to tolerate it.
- **The turn-start session baseline is snapshotted into `RunCtx`** so
the mid-turn figure stays *session*-cumulative. A turn-local number
would be discarded by a high-water-mark consumer and lose the turn
entirely; there is a test for exactly that.
- **Snapshot by value, not a session handle.** The loop reports once per
round, and taking the sessions lock on each would serialise concurrent
sessions behind one another's provider round-trips. Nothing else
advances those counters while the turn holds `busy`, so it cannot go
stale.
- **One shared `wire::usage_update_payload`** for both call sites, so
the mid-turn and end-of-turn shapes cannot drift. A drift there would
present as tokens silently vanishing, which is the failure this
reporting exists to prevent.

## Why not a SIGTERM handler

That was the obvious shape and it does not work. At signal time the
counters are not sitting anywhere a handler could reach — they are in
the turn's stack frame, and the value the handler would need has not
been folded into the session yet. Making usage durable *during* the turn
is what actually fixes it; once it is, a handler adds nothing beyond the
in-flight request, whose cost is unknown until its response lands.

## Tests

- `usage_is_reported_after_each_round_not_only_at_turn_end` — two
rounds; asserts the **first** notification carries round 1's counts
alone, proving it went out before round 2 returned.
- `mid_turn_usage_includes_earlier_turns` — a mid-turn report must be
session-cumulative, not turn-local.

buzz-agent 18/18 on the `fake_llm` suite, 382 unit. `cargo fmt` /
`clippy` / `cargo check --workspace --all-targets` clean.

## Scope

Agent-side only, against `main`. The matching harness change — settling
usage on the timeout path, which was skipped on the reasoning that an
incomplete turn has nothing to flush — is **#4553**, against the
benchmark branch, since that harness does not exist on `main`.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Signed-off-by: Atish Patel <atish@squareup.com>
Co-authored-by: Claude Code <noreply@anthropic.com>
2026-08-03 12:42:42 -04:00
Tyler
081f805d5e feat(agent): optional reply guard reminds a silent turn to publish (#3763)
## Why

A Buzz agent's assistant text and reasoning are never shown to anyone —
only what it posts through the CLI. A turn that runs fifteen tool calls
and never publishes is a silent failure: the requester waits on a result
that was produced and thrown away.

This adds an optional reminder at the end-of-turn gate, off by default.

Tyler asked for it in buzz-mesh; plan iterated to **9.5/10 with @Wren**
(Minimalness 9.7, Elegance 9.5, Correctness 9.3).

## What

`BUZZ_AGENT_REQUIRE_REPLY=1` (default off, per-agent opt-in). A turn
about to end with no recognized attempt to post gets a reminder and is
rerolled. **At most two, then the turn ends regardless** — the guard
catches accidental omission, it does not compel speech. The reminder
text explicitly licenses silence so it cannot fight the base prompt's
"silence is usually correct."

**This is not a new MCP hook.** `RunCtx::run` *is* the turn, so the two
per-turn locals need no plumbing, and every tool call already passes
through it with arguments visible. The objection is appended at the
existing `_Stop` gate and rides `push_hook_outputs_as_tool_results`, so
the model receives it as a lower-trust tool result with `{hook, server,
text}` attribution. No new trust path, no new lifecycle event, no
dev-mcp or CLI protocol change.

Earlier revisions of this plan needed four crates (a `_UserPromptSubmit`
hook, a marker file, a `buzz-cli` change, dev-mcp state). Tyler pointed
out the agent already knows both facts; that deleted all of it. Net
runtime change is ~35 lines in `agent.rs` + ~4 in `config.rs`.

### Recognition contract

A registered non-hook tool whose qualified name ends in `__shell`, whose
`command` argument contains `messages send` or `reactions add`.

- **The `__` separator is exact, not approximate.** Given `has()` +
`!is_hook()`, `ends_with("__shell")` is *provably equivalent* to a bare
name of `shell`: registration forbids `__` in server and bare names
(`mcp.rs:227,268`) and qnames are `{server}__{bare}`, so a trailing
`__shell` could only straddle the separator if the bare name began with
`_` — which `is_hook` excludes. Without the separator, `powershell` and
`noshell` would match.
- **Reads the structured `command` field**, not serialized arguments, so
a `description` that quotes a send cannot disarm the guard, and a
non-string `command` is rejected rather than coerced.
- **Detects an attempt, not a successful publish.** A failed send
already returns non-zero exit and error JSON — louder than this
reminder. The variable is named `buzz_reply_call_seen` so the code can't
pretend otherwise.
- **Checked after the per-turn tool-call cap**, since a discarded call
never ran.
- `messages send` also covers `messages send-diff`. Reactions count
because the base prompt directs agents to react rather than post a bare
acknowledgement.

**Known limits, both deliberate and documented:** a command assembled at
runtime (`$CMD`) or hidden in a wrapper script is missed; text that
merely quotes a send (`echo "buzz messages send"`) matches. Missing a
real post is the expensive direction and substring matching is the
forgiving one there. Neither edge is pinned by a test, so the matcher
stays free to improve.

### Budget

Reminders share `BUZZ_AGENT_STOP_MAX_REJECTIONS`, the existing outer cap
on every end-turn objection. Default 3 fits both; at 1 only one fits; at
0 the guard is off with the hooks. A round carrying both a hook
objection and a reminder costs one rejection and delivers both texts. An
independent budget would either violate that bound or need a second
arbitration rule.

## Prior art

- **#3467** (closed) built the same detector one layer up in `buzz-acp`
for a different remedy. None of its symbols are on main — this borrows
its permission to be coarse, but reads structured data that ACP didn't
have.
- **#3648** (open) detects turns with *no output at all*; a turn with
fifteen tool calls and no post counts as output there, so it does not
cover this case.
- **#3741** (merged) is mesh-only.

## Testing

**14 new tests.** 4 unit tests on the matcher; 10 integration tests
through the ACP wire harness: off by default, `=0` still off, opted-in
silent → exactly 2 reminders then `end_turn`, registered `fake__shell`
send → 0 reminders, hallucinated `fake__shell` → still reminded, publish
call truncated past the 64-call cap → still reminded, budget 1 → 1
reminder, budget 0 → off, combined `_Stop` hook objection + reminder →
one round both texts and after 2 reminders the hook objection continues
alone, unparseable `=true` → startup error naming the key.

**10 mutation checks, each breaking a specific named test** — neutralize
the nag cap, stop sharing the budget, neutralize `buzz_reply_call_seen`,
drop `has`/`is_hook`, ignore the flag, drop the `__`, drop `reactions
add`, read serialized args, move detection before truncation.

`tests/bin/fake_mcp.rs` gains `FAKE_MCP_SHELL_TOOL=1`: it previously
exposed no tool with a bare name of `shell`, so the satisfied-guard path
was untestable.

Full `cargo test -p buzz-agent` green at 9e0ae1f04; clippy `-D warnings`
and `cargo fmt --check` clean.

**Unrelated flake found:**
`cancelled_turn_with_usage_emits_notification_before_response`
(`tests/fake_llm.rs`) is timing-sensitive. Under 10 loaded cores it
fails **2/20 on this branch and 1/20 at unmodified
`origin/main@02be413b8`** — pre-existing, not caused by this change
(which is inert without the env var). Flagging so it isn't misattributed
to the next PR that's open when CI hits it.

## Docs

`crates/buzz-agent/README.md` is the primary home (env var, recognition
contract, limits, budget interaction). `docs/MCP_DRIVEN_HOOKS.md` gets a
short cross-reference explaining this is *not* a hook — otherwise
readers hunt for a `_ReplyGuard` tool that doesn't exist.

---------

Signed-off-by: tlongwell-block <109685178+tlongwell-block@users.noreply.github.com>
Signed-off-by: npub1mprnacetjua2xx3p5eddmhxyk6wv929ymm5py8kd2xfxurxahspqqlgyta <d8473ee32b973aa31a21a65adddcc4b69cc2a8a4dee8121ecd51926e0cddbc02@buzz.block.builderlab.xyz>
Co-authored-by: Dawn (sprout agent) <c6237ef84fa537c78dcee78efd2d4e59f728859c7f194da42ac51ededfa0be05@sprout-oss.stage.blox.sqprod.co>
Co-authored-by: npub1mprnacetjua2xx3p5eddmhxyk6wv929ymm5py8kd2xfxurxahspqqlgyta <d8473ee32b973aa31a21a65adddcc4b69cc2a8a4dee8121ecd51926e0cddbc02@buzz.block.builderlab.xyz>
2026-07-31 07:02:48 -04:00
Will Pfleger
ab55fee818 feat: add first-class OpenRouter provider support (#1975)
## Summary

First-class `Provider::OpenRouter` support joining the existing
anthropic/openai/databricks providers. Reuses the Chat Completions path
with targeted mutations for OpenRouter's routing contract.

**Core (`crates/buzz-agent`):**
- `Provider::OpenRouter` enum variant with `OPENROUTER_API_KEY`,
`BUZZ_AGENT_MODEL` → `OPENROUTER_MODEL` fallback, `OPENROUTER_BASE_URL`
env convention
- Body mutator: `reasoning: {effort}` when effort is configured, and
`max_completion_tokens` translated to OpenRouter's `max_tokens`
spelling; no `provider.require_parameters` filter (it routes only to
endpoints advertising every parameter in the body, which hard-404s a
valid model id); summaries get neither. `openai_body` is always called
with `effort=None` on the OpenRouter path — the `reasoning` object is
added by the mutator directly, so `reasoning_effort` is structurally
absent.
- Attribution headers: `HTTP-Referer: https://github.com/block/buzz`,
`X-OpenRouter-Title: Buzz`
- Error-inside-200 check in shared `parse_openai` (`finish_reason ==
"error"`)
- 401 auth handling: static API keys (`refresh_now` returns the same
token) fail terminal immediately with one wire request; PKCE/minting
sources get one retry with the fresh token.
- Status+`error_type` retry matrix (4-arm collapsed form): 429 (honor
`Retry-After`), 502 (retry), 503/`provider_overloaded` (honor
`Retry-After`), everything else including untyped 503 (bounded retries →
actionable routing message). 499 included matching shared `post()`
(#2175) for turn-timeout stall surfacing. Terminal failures wrapped in
`terminal_llm_error` for duration+attempt-count context.
- `anthropic/*` `cache_control` injection (model-gated, mixed-content
safe)
- Provider-agnostic `reasoning_details` opaque round-trip on
`HistoryItem::Assistant` for tool-call continuations — captured verbatim
in `parse_openai_with_reasoning_details`, replayed verbatim in
`openai_body`, byte-accounting charged. `provider_extra` passthrough
from `make_tool_call` composes independently.

**Desktop:**
- Readiness arms checking `OPENROUTER_API_KEY` + `OPENROUTER_MODEL`
- Model discovery via `{OPENROUTER_BASE_URL}/models` filtered on
`supported_parameters` contains `tools`
- Picker entry, credential config, effort table 3-file sync

**`desktop/src/features/agents/AGENTS.md`: no rules changed** — the
scoped rule requiring an explicit note is satisfied here.

Implements the gate-cleared plan from
`PLANS/OPENROUTER_PROVIDER_PLAN.md` (rev 3).

Signed-off-by: Will Pfleger <pfleger.will@gmail.com>
Co-authored-by: npub1mn7jgtj4w2pd0g0zeuhxsa6jy6p0rewxz4kujt98my82ahfmp72sxjexk7 <dcfd242e557282d7a1e2cf2e6877522682f1e5c6156dc92ca7d90eaedd3b0f95@buzz.block.builderlab.xyz>
2026-07-29 23:08:35 +00:00
Will Pfleger
f95fdc1a10 feat(agent,acp): wire provider total_tokens through NIP-AM publish chain (#3593)
## What

Wires genuine provider-reported `total_tokens` through the full
buzz-agent → buzz-acp publish chain so kind-44200 events carry real
per-turn and cumulative totals for OpenAI-backed models, while
preserving all existing behaviour for Anthropic and external harnesses
(goose, claude-code).

## Why

Live prod data showed 0 of 1,934 archived reports carry `totalTokens`.
Both hardcoded `total_tokens: None` in `pool.rs` and the absent field in
`buzz-agent`'s parser are root causes. This is the backend half of a
two-track fix; the display-fallback half lands in
[#2035](https://github.com/block/buzz/pull/2035).

## Changes

**`crates/buzz-agent/src/types.rs`**
- Added `total_tokens: Option<u64>` to `LlmResponse` with an explicit
doc comment that NIP-AM forbids deriving it.
- Added `TurnTotalState` enum (`Unseen | Exact(u64) | Unknown`) with
`fold()` and `exact_value()` — the tri-state accumulator that
distinguishes not-yet-observed from permanently poisoned.

**`crates/buzz-agent/src/llm.rs`**
- `parse_responses` and `parse_openai`: read `usage.total_tokens` from
OpenAI Chat Completions (including Databricks routes) and the Responses
API via `sum_usage`.
- Anthropic: explicit `total_tokens: None` — no genuine total available;
NIP-AM forbids summing categories.

**`crates/buzz-agent/src/agent.rs`**
- Added `turn_total_state: &'a mut TurnTotalState` to `RunCtx`.
- Fold `response.total_tokens` into the accumulator after each
usage-bearing response; non-usage-bearing responses (keepalive/stream
frames) do not poison.

**`crates/buzz-agent/src/lib.rs`**
- Added `accumulated_total_state: TurnTotalState` to `Session` (default
`Unseen`).
- Per-turn state passed to `RunCtx`, folded into session cumulative
after each turn.
- Emits `accumulatedTotalTokens` in `usage_update` only when cumulative
is `Exact(n)`.

**`crates/buzz-acp/src/usage.rs`**
- Added `accumulated_total_tokens: Option<u64>` (serde default) to
`UsageUpdatePayload` — optional for goose compat.
- Added `last_total: Option<u64>` to `SessionState`.
- Added `turn_total_tokens` and `cumulative_total_tokens` to `TurnUsage`
(field-local — never affect `delta_reliable`).
- Derive turn-total delta only when prev and current are both `Some` and
monotonic; absence, decrease, or no baseline leaves only the total delta
null without touching input/output reliability.

**`crates/buzz-acp/src/pool.rs`**
- Replaced both hardcoded `total_tokens: None` in
`publish_agent_turn_metric` with `usage.turn_total_tokens` and
`usage.cumulative_total_tokens`.

## Tests

20 new tests across the four touched files:

| File | Tests |
|------|-------|
| `types.rs` | `TurnTotalState` fold, accumulation, exact_value, default
(7 tests) |
| `llm.rs` | Chat present/absent, Responses present/absent, Anthropic
always-None (5 tests) |
| `usage.rs` | First turn no baseline, second-turn delta, cumulative
decrease (field-local), current absent, goose-shaped deserialization,
baseline absent (6 tests) |
| `pool.rs` | Exact turn+cumulative mapping, null totals never derived
(2 tests) |

`cargo test -p buzz-acp -p buzz-agent` — all passing, 0 failures.

## Scope

Boundary: `crates/buzz-agent/**` + `crates/buzz-acp/**` only. Desktop
unchanged.
`costUsd` explicitly out of scope.

Related: [#2035](https://github.com/block/buzz/pull/2035)

---------

Signed-off-by: Will Pfleger <pfleger.will@gmail.com>
Co-authored-by: npub1g8493u0xfsjrvflg4n08ezd7vec99mnwzlv0qgwpr9d7gvjwhuzqx59rhw <41ea58f1e64c243627e8acde7c89be667052ee6e17d8f021c1195be4324ebf04@buzz.block.builderlab.xyz>
2026-07-29 18:15:30 -04:00
Atish Patel
4a1ebf25c7 feat(agent): make Gemini and MLflow-route models usable through databricks_v2 (#3569)
## Summary

Makes Gemini — and every other non-Claude, non-GPT-5 model on the
Databricks MLflow route (`databricks_v2`) — usable in an agent loop.
These are the non-`benchmarks/` changes from
`benchmark/harness-accounting-and-solo`, lifted onto a clean base off
`main` so they can land independently while the harness work continues.

Two defects made these models unusable, one fatal and one silent. Both
live only in `openai_body` / `parse_openai`, which is the
least-exercised of the three `databricks_v2` sub-routes — the
`luna`/`sol` conditions run the Responses route and the `opus`
conditions run the Anthropic route, so **this change is inert for every
model already in use** and only lights up the MLflow path.

## Why a third route at all

`databricks_v2_route_for_model` buckets by model family: `claude*` →
Anthropic Messages, `gpt-5`/code-names → OpenAI Responses, **everything
else → MLflow chat-completions**. Gemini, Qwen, gpt-oss, and friends all
fall through to that third pair — and both bugs below live only there.

## D1 — dropped thought signatures (fatal)

Gemini returns a `thoughtSignature` on every tool call and **requires it
echoed back**. `openai_body` reserialized each call as `{id, type,
function}` only, dropping the field, so the next request 400'd:

```
HTTP 400  Function call is missing a thought_signature in functionCall parts.
```

For a coding agent this fires on the **first** tool call, so the model
never completes a single turn.

**Position is load-bearing.** A four-shape replay probe against the live
gateway established that the signature must sit as a *sibling* of
`function` — nesting it inside `function{}` fails with the *same* 400 as
omitting it. A fix that "preserves the field" without preserving its
position passes a unit test and still 400s.

The fix: `ToolCall` gains `provider_extra: Map<String, Value>`.
`parse_openai` captures every top-level wire key except the three we
model (`id`, `type`, `function`); `openai_body` re-emits them beside
`function`. Keeping *whatever we did not model*, rather than naming
`thoughtSignature`, means the next provider with an opaque per-call
token needs no change here. The Responses and Anthropic replay shapes
are fully modelled, so they pass `Default::default()` and stay
**byte-identical** to before.

### D1b — duplicate tool-call ids (same root cause)

Gemini returns the **function name** as the id, so two parallel calls to
one function arrive sharing an id — and that id is what pairs a
`role:"tool"` result back to its call, making two results
indistinguishable. `dedupe_provider_ids` suffixes collisions
(`get_weather`, `get_weather-2`). Safe because both halves of the
pairing (the assistant `tool_calls[].id` and the result's
`tool_call_id`) are re-emitted from this same value; the provider never
sees its original id again.

## D2 — block-array content discarded (silent, worse than a crash)

`parse_openai` read `content` with `as_str()`, which returns `""` for
anything that isn't a JSON string. Gemini (and Qwen35, gpt-oss) send an
array of typed blocks:

```json
"content": [
  {"type": "reasoning", "summary": [{"type": "summary_text", "text": "…"}]},
  {"type": "text", "text": "391"}
]
```

So the model answered and the answer was thrown away — no error, no
warning, just a turn that looked like the model had said nothing. On a
benchmark this reads as "Gemini is bad at the task" rather than "buzz
dropped the reply."

`openai_content_parts` now accepts either shape — string as before, or a
block array where `text` blocks concatenate into text and `reasoning`
blocks into reasoning (Gemini nests the prose one level down under
`summary`). Message-level `reasoning_content` / `reasoning` still win
when present, so DeepSeek and vLLM-style hosts are unchanged; block
reasoning is the last fallback.

## Also: a turn-start log line (`buzz-acp` `pool.rs`)

Small, independent observability change that also rides in the
non-benchmark delta: `run_prompt_task` now emits a `pool::prompt` "turn
starting" line, labelled by the same `prompt_label` helper as
`log_stop_reason`, so a log reads as start/stop pairs. An unpaired start
is the only durable evidence that a turn was entered and never returned
— without it, a stalled agent and an agent nobody woke leave identical
(zero-completion) logs.

## Interaction with #3538

#3538 (already merged) rewrote `databricks_v2_route_for_model` to route
by boundary-aware model-family segments. That change and this one touch
**different functions** in `llm.rs` — routing vs. body/parse — and
compose cleanly; the family routing decides *which* pair runs, and this
fixes the MLflow pair it can now select.

## Testing

- `cargo fmt --all -- --check`, `cargo clippy -p buzz-agent -p buzz-acp
--all-targets -- -D warnings` — clean.
- `cargo test -p buzz-agent -p buzz-acp` — all green (304 + 632 lib
tests plus integration suites, 0 failures). Five new tests cover:
block-array text extraction, plain-string regression, passthrough
capture (and non-duplication of the modelled keys), replay position
(`thoughtSignature` beside `function`, not inside it), and id
de-duplication.
- Wire evidence: the four-shape replay table and the reasoning-effort
probe were run against `block-lakehouse-staging` (recorded in the design
doc).

## Relationship to the benchmark branch

The full design write-up (four-shape replay table, position-matters
analysis, effort verification, and open pricing item) lives in
`docs/08-gemini-provider-fixes.md` on
`benchmark/harness-accounting-and-solo`. The benchmark manifests and
endpoint-config entries that exercise these models are separable and
stay on that branch.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Signed-off-by: Atish Patel <atish@squareup.com>
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-29 12:49:51 -04:00
Atish Patel
c405ad1d4b feat(agent): fix Anthropic prompt caching with Databricks (+ MCP proxy/TLS passthrough) (#3463)
> On 8 tasks matched by name across the two runs, cost fell $8.36 →
$1.77 (4.71×) and wall-clock 12,423 s → 1,085 s (11.45×).

## Summary

Two independent, self-contained fixes to `buzz-agent`/`buzz-acp`, split
out of the benchmark branch so they can land while the harness work
continues:

1. **Request and surface Anthropic prompt caching.** buzz never sent a
`cache_control` breakpoint, so on the Databricks Anthropic route
`cache_read_input_tokens` was **structurally always 0** and the ~10×
cache-read discount was never claimed. This teaches `anthropic_body()`
to mark the cacheable prefix, and plumbs the cache split end-to-end so
accounting can price it.
2. **Pass proxy + TLS-trust env into MCP tool subprocesses**, so agent
tools on a proxy-only host stop reporting a live network as offline.

## Why the caching gap matters

The Anthropic Messages API does **not** cache unless the request carries
a `cache_control` breakpoint, and the Databricks AI Gateway — a
third-party proxy in front of the model, in the same category as
Bedrock/Vertex — does **not** auto-cache (only the first-party Anthropic
API and Claude-on-AWS do zero-config caching). So every request was
billed cold.

Measured live against the Databricks gateway
(`databricks-claude-opus-5`, 2026-07-28), the same call with and without
a single `cache_control` marker:

| Run | `input_tokens` | `cache_creation` | `cache_read` | latency |
|---|---|---|---|---|
| No `cache_control`, two byte-identical calls | 121,625 | 0 | **0** |
~9.3 s |
| With one marker — cold (write) | 4 | 121,625 | 0 | 9.3 s |
| With one marker — warm (read) | 4 | 0 | **121,625** | **4.5 s** |

One marker moved 121,625 tokens from full-price input to a 0.1× cache
read and roughly halved latency (a clean, isolated ~2.07× prefill
speedup on this single-threaded microbenchmark). The gateway honours
`cache_control`; buzz simply never sent it.

At fleet scale this was a real budget item. Across matched
Terminal-Bench solo sweeps (89 tasks, `-n 20`, before the fix), the two
OpenAI-route models independently landed at ~86–87% cache reads — the
expected shape for an agentic loop, where system + tools + append-only
history repeat every turn — while the Anthropic route returned a hard 0%
on every receipt:

| Condition | Route | Input tokens | Cache reads | Cost | Cost if
uncached | Discount |
|---|---|---|---|---|---|---|
| luna (`gpt-5-6`) | OpenAI | 20,320,818 | **17.7M (87.0%)** | $6.96 |
$22.87 | **3.28×** |
| sol (`gpt-5-6`) | OpenAI | 22,312,290 | **19.2M (85.9%)** | $37.07 |
$123.35 | **3.33×** |
| opus (`claude-opus-5`) | Anthropic | 12,459,822 | **0 (0.0%)** |
$81.31 | $81.31 | **1.00×** |

Applying luna's measured 87% read rate to the opus token counts at list
prices (`input $5/M`, `cached_input $0.5/M`, `output $25/M`) puts the
opus run at **~$32.53 vs the $81.31 actually paid — a ~60% overspend on
those 49 trials (~$89 on a full sweep)**. That is an upper bound (it
prices every cached token at the 0.1× read rate and ignores the 1.25×
write premium), and the opus discount is structurally smaller than
luna/sol's because opus emits ~3.5× more uncacheable output per trial,
which sets a floor on what caching can recover.

There is also a plausible **second-order effect**: Databricks appears to
meter its per-minute rate limit on *uncached* input tokens, so the
missing cache also cost rate-limit headroom — the opus endpoint lost 63%
of its trials to fatal 429s while running alone at one-third of a GPT
endpoint's raw throughput. This is a hypothesis, not a proven mechanism
(the only zero-cache condition is also the only Anthropic endpoint), but
it is the reading that explains the throttling with one rule instead of
two.

## Post-fix results (provisional — first trials of an in-flight re-run)

On 8 tasks matched by name across the two runs, cost fell **$8.36 →
$1.77 (4.71×)** and wall-clock **12,423 s → 1,085 s (11.45×)**.

| Metric | before (`4a955a858`) | after (`3bef1f6a`) |
|---|---|---|
| Cache reads as % of input | **0.0%** | **78.7%** (still climbing
toward the ~86% steady state) |
| `cost_usd_no_cache_discount / cost_usd` | **1.00×** | **2.18×**
(tracking the projected ~2.5×) |
| Trials with a fatal 429 (same `-n 20`) | **63%** | **15–19%** |

To be clear about attribution: **~2× of that is the clean prefill saving
from caching itself**; the rest is second-order — cached requests burn
far less rate-limit budget, so they stall less and redo less destroyed
work. The 11.45× is a system-level result specific to this throttled
workspace, not a caching benchmark. Quality held (7/8 solved in each
run). A controlled low-`-n` A/B (neither arm hitting a 429), which the
`BUZZ_AGENT_PROMPT_CACHING` opt-out exists to enable, is still owed
before this becomes a published claim.

## What changed

### 1. Request caching (`llm.rs`, `config.rs`)

`anthropic_body()` emits ephemeral `cache_control` breakpoints, gated by
`BUZZ_AGENT_PROMPT_CACHING` (**default on**, `=0` to opt out):

- **Static prefix** — marker on the `system` block. Prefix order is
`tools → system → messages`, so this single marker caches **tools +
system** together. Byte-identical on every turn of a run, and survives a
context handoff (system/tools come from cfg/mcp, not `self.history`).
- **Rolling tail + leapfrog** — marker on the last block of the last
**two** messages. The append-only history re-reads the prior turn's
prefix from cache; marking two messages (not one) keeps consecutive
breakpoints inside Anthropic's **20-block lookback window** even as tool
parallelism rises, avoiding a silent full-price miss.

An empty system prompt stays a bare string (Anthropic rejects empty text
blocks), and below-threshold prefixes are silently not cached, so the
flag is safe on by default.

### 2. Surface the cache split end-to-end — the plumbing (`types.rs`,
`llm.rs`, `agent.rs`, `lib.rs`, `usage.rs`, `acp.rs`)

This is the part that makes gaps like the one above **visible** instead
of silent. A consumer that prices all of `input_tokens` at the full rate
can't tell a route that's caching from one that isn't — the total looks
right either way. So:

- `LlmResponse` gains `cached_input_tokens` (a **subset** of
`input_tokens`, never an addition); `parse_anthropic` / `parse_openai` /
`parse_responses` each populate it.
- A `usage_first()` helper reads the cache count wherever a provider
hides it — flat `cache_read_input_tokens` (Anthropic),
`prompt_tokens_details.cached_tokens` (OpenAI chat),
`input_tokens_details.cached_tokens` (Responses) — taking the **first
present value, never a sum**. Reading only flat keys is exactly why the
OpenAI route's nested `cached_tokens` had *also* been going unclaimed:
`prompt_tokens` is already inclusive, so the total looked correct while
the discount silently went unreported.
- The per-turn/per-session accumulators and the goose `usage_update`
payload now carry `accumulatedCachedInputTokens`; `buzz-acp`
deserializes it (`serde` default `0` for goose, which doesn't send it)
and logs `cached=<n>`.

### 3. Fix a Databricks MLflow-route double-count (`llm.rs`)

The Databricks MLflow route reports the flat Anthropic-spelled
`cache_read_input_tokens` *alongside* an already-inclusive
`prompt_tokens`, so the old code summed them and nearly doubled the
count — inflating both the context-budget gate and cost.
`openai_chat_input_tokens()` now reads `prompt_tokens` alone. Verified
on a live `databricks-glm-5-2` response where `prompt_tokens +
completion == total` proves inclusivity. (Anthropic's native route
genuinely *excludes* the cache fields and is still summed — the two
never collide, because `claude*` models route to the Anthropic path.)

### 4. Proxy + TLS-trust passthrough into MCP tools (`mcp.rs`) —
independent fix

`buzz-agent` `env_clear()`s each MCP child, and the allowlist carried no
proxy/TLS vars. On a proxy-only host that doesn't degrade the tools, it
**blinds** them: apt, curl, pip, git connect directly, the egress
firewall resets the socket, and the agent reports "Connection reset by
peer" — indistinguishable from a genuinely offline task. Adds both
spellings of `HTTP(S)_PROXY`/`NO_PROXY`/`ALL_PROXY` (curl/git read
lowercase; Go/Python read uppercase; libcurl ignores uppercase
`HTTP_PROXY`) plus `SSL_CERT_FILE`/`SSL_CERT_DIR` for TLS-terminating
proxies that present their own CA.

## Testing

- `cargo fmt --all -- --check`, `cargo clippy -p buzz-agent -p buzz-acp
--all-targets -- -D warnings` — clean.
- `cargo test -p buzz-agent -p buzz-acp` — **all green** (632 + 299 lib
tests plus integration suites, 0 failures). New tests cover: the three
breakpoints and the disabled/empty-system/single-message edge cases;
nested-vs-flat cache parsing for all three routes; the Databricks
inclusive-`prompt_tokens` fix; wire deserialization of
`accumulatedCachedInputTokens`; and the proxy/TLS passthrough allowlist.
- Pre-push lefthook suite green (branch-skew, rust-tests, test,
desktop-check/test/tauri).

## Relationship to the benchmark branch

These are the non-`benchmarks/` changes from
`benchmark/harness-accounting-and-solo`, lifted onto a clean base off
`main` so they can merge independently.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Signed-off-by: Atish Patel <atish@squareup.com>
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-29 09:36:09 -04:00
Will Pfleger
71265ca361 feat(nips,relay,acp): NIP-AM durable encrypted agent turn metrics (kind 44200) (#1441)
Co-authored-by: npub1mn7jgtj4w2pd0g0zeuhxsa6jy6p0rewxz4kujt98my82ahfmp72sxjexk7 <dcfd242e557282d7a1e2cf2e6877522682f1e5c6156dc92ca7d90eaedd3b0f95@sprout-oss.stage.blox.sqprod.co>
Co-authored-by: npub1fgdl5qqnh3k3f2xkqrvt7cujalhm623x4s7fdjdj5yrtp5fzjl9qrjpucw <4a1bfa0013bc6d14a8d600d8bf6392efefbd2a26ac3c96c9b2a106b0d12297ca@sprout-oss.stage.blox.sqprod.co>
2026-07-06 16:35:10 +00:00
Wes
4a09510429 fix(agent): make stop-hook rejection budget per-prompt, fix stale hook docs (#1503)
Signed-off-by: Wes <wesbillman@users.noreply.github.com>
Co-authored-by: Brain <21994759fc7a6fa6b965551d35cfd7897d262f2495467f2d78694ddcfa6a5c7e@sprout-oss.stage.blox.sqprod.co>
2026-07-03 09:21:18 -07:00
Wes
1c297d2f26 fix(agent): honor stop hook retry budget (#1501)
Signed-off-by: Wes <wesbillman@users.noreply.github.com>
Co-authored-by: Pinky <44b8e82baa6e0e254e0208d68f335c283c94e7b78dd1fa10d5a49d3f13dd0435@sprout-oss.stage.blox.sqprod.co>
2026-07-03 15:50:22 +00:00
Will Pfleger
3e282a2418 feat(buzz-agent): config parity — thinking effort, model switching, normalized token limits (#1470)
Signed-off-by: Will Pfleger <pfleger.will@gmail.com>
Co-authored-by: npub1mn7jgtj4w2pd0g0zeuhxsa6jy6p0rewxz4kujt98my82ahfmp72sxjexk7 <dcfd242e557282d7a1e2cf2e6877522682f1e5c6156dc92ca7d90eaedd3b0f95@sprout-oss.stage.blox.sqprod.co>
2026-07-02 22:52:38 +00:00
Will Pfleger
9f2a11b338 feat(buzz-agent): emit agent_thought_chunk for reasoning content (#1436)
Signed-off-by: Will Pfleger <pfleger.will@gmail.com>
Co-authored-by: npub1mn7jgtj4w2pd0g0zeuhxsa6jy6p0rewxz4kujt98my82ahfmp72sxjexk7 <dcfd242e557282d7a1e2cf2e6877522682f1e5c6156dc92ca7d90eaedd3b0f95@sprout-oss.stage.blox.sqprod.co>
2026-07-01 14:57:05 -04:00
Tyler
e567491a19 feat(buzz-acp): steering as the default mid-turn mention delivery (#1160)
Signed-off-by: Tyler Longwell <tlongwell@block.xyz>
Signed-off-by: Will Pfleger <pfleger.will@gmail.com>
Co-authored-by: npub1qyvc0c5kl4gqv2fd97fsk46tu378sqgy35vc83rvgfwne90sel7s0ed67d <011987e296fd5006292d2f930b574be47c7801048d1983c46c425d3c95f0cffd@sprout-oss.stage.blox.sqprod.co>
Co-authored-by: Tyler Longwell <tlongwell@block.xyz>
Co-authored-by: npub17jjz49l9jjmhhk7cac63j8yt9z555n9cw8vk7v5jz4vzw4ppld5qgj57cc <f4a42a97e594b77bdbd8ee35191c8b28a94a4cb871d96f32921558275421fb68@sprout-oss.stage.blox.sqprod.co>
Co-authored-by: npub1mn7jgtj4w2pd0g0zeuhxsa6jy6p0rewxz4kujt98my82ahfmp72sxjexk7 <dcfd242e557282d7a1e2cf2e6877522682f1e5c6156dc92ca7d90eaedd3b0f95@sprout-oss.stage.blox.sqprod.co>
Co-authored-by: Will Pfleger <pfleger.will@gmail.com>
Co-authored-by: npub1fgdl5qqnh3k3f2xkqrvt7cujalhm623x4s7fdjdj5yrtp5fzjl9qrjpucw <4a1bfa0013bc6d14a8d600d8bf6392efefbd2a26ac3c96c9b2a106b0d12297ca@sprout-oss.stage.blox.sqprod.co>
2026-06-29 13:18:56 -04:00
Tyler
744c77bc2d fix(buzz-agent): charge images a token-equivalent for the handoff gate (#1332)
Signed-off-by: Tyler Longwell <tlongwell@block.xyz>
Co-authored-by: npub1qyvc0c5kl4gqv2fd97fsk46tu378sqgy35vc83rvgfwne90sel7s0ed67d <011987e296fd5006292d2f930b574be47c7801048d1983c46c425d3c95f0cffd@sprout-oss.stage.blox.sqprod.co>
Co-authored-by: Tyler Longwell <tlongwell@block.xyz>
2026-06-27 16:16:28 -04:00
Will Pfleger
25396c06d6 feat(buzz-agent): lazy skill loading via load_skill tool (#1283)
Signed-off-by: Will Pfleger <pfleger.will@gmail.com>
Co-authored-by: npub1mn7jgtj4w2pd0g0zeuhxsa6jy6p0rewxz4kujt98my82ahfmp72sxjexk7 <dcfd242e557282d7a1e2cf2e6877522682f1e5c6156dc92ca7d90eaedd3b0f95@sprout-oss.stage.blox.sqprod.co>
2026-06-25 12:55:04 -04:00
tlongwell-block
84f499cb6e fix(buzz-agent): cap tool-result text at 50 KiB with middle elision (#952)
Signed-off-by: npub1qyvc0c5kl4gqv2fd97fsk46tu378sqgy35vc83rvgfwne90sel7s0ed67d <011987e296fd5006292d2f930b574be47c7801048d1983c46c425d3c95f0cffd@sprout-oss.stage.blox.sqprod.co>
Co-authored-by: npub1qyvc0c5kl4gqv2fd97fsk46tu378sqgy35vc83rvgfwne90sel7s0ed67d <011987e296fd5006292d2f930b574be47c7801048d1983c46c425d3c95f0cffd@sprout-oss.stage.blox.sqprod.co>
Co-authored-by: npub1mprnacetjua2xx3p5eddmhxyk6wv929ymm5py8kd2xfxurxahspqqlgyta <d8473ee32b973aa31a21a65adddcc4b69cc2a8a4dee8121ecd51926e0cddbc02@sprout-oss.stage.blox.sqprod.co>
2026-06-12 10:39:34 -04:00
Will Pfleger
d99ad131f1 refactor: rename sprout backend to buzz (#958)
Signed-off-by: Will Pfleger <pfleger.will@gmail.com>
Signed-off-by: Will Pfleger <wpfleger@block.xyz>
Signed-off-by: Will Pfleger <wpfleger@squareup.com>
Signed-off-by: Will Pfleger <wpfleger96@gmail.com>
Co-authored-by: npub1mn7jgtj4w2pd0g0zeuhxsa6jy6p0rewxz4kujt98my82ahfmp72sxjexk7 <dcfd242e557282d7a1e2cf2e6877522682f1e5c6156dc92ca7d90eaedd3b0f95@sprout-oss.stage.blox.sqprod.co>
Co-authored-by: npub1fgdl5qqnh3k3f2xkqrvt7cujalhm623x4s7fdjdj5yrtp5fzjl9qrjpucw <4a1bfa0013bc6d14a8d600d8bf6392efefbd2a26ac3c96c9b2a106b0d12297ca@sprout-oss.stage.blox.sqprod.co>
Co-authored-by: npub16v54tttfqacx9ycvc3k0ut0npj564ahcuajzy6qjvh57ntmsf4uq4806j2 <d32955ad69077062930cc46cfe2df30ca9aaf6f8e76422681265e9e9af704d78@sprout-oss.stage.blox.sqprod.co>
Co-authored-by: Will Pfleger <wpfleger96@gmail.com>
2026-06-10 19:29:51 -04:00