Don't special-case "default" model id (#166 )

A model of id "default" only shows up sometimes in certain plans. So rather than special-case this one, we just take the first one in the list.
Report errors from "status" messages (#165 )
2026-10-30 14:01:44 +00:00 · 2025-11-18 10:51:20 +00:00 · 2025-11-18 10:30:30 +00:00 · 2025-11-18 09:59:41 +00:00 · 2025-11-17 10:31:59 +00:00
4 changed files with 198 additions and 144 deletions
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog

+## 0.10.5
+
+- Better error messages at end of turn if there were any
+- Add experimental support for disabling built-in tools via \_meta flag
+- Update to @anthropic-ai/claude-agent-sdk@v0.1.44
+
 ## 0.10.4

 - Fix tool call titles not appearing during approval in some cases
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,17 +1,17 @@
 {
  "name": "@zed-industries/claude-code-acp",
-  "version": "0.10.4",
+  "version": "0.10.5",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "@zed-industries/claude-code-acp",
-      "version": "0.10.4",
+      "version": "0.10.5",
      "license": "Apache-2.0",
      "dependencies": {
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-        "@anthropic-ai/claude-agent-sdk": "0.1.42",
-        "@anthropic-ai/claude-code": "2.0.42",
+        "@anthropic-ai/claude-agent-sdk": "0.1.44",
+        "@anthropic-ai/claude-code": "2.0.44",
        "@modelcontextprotocol/sdk": "1.22.0",
        "diff": "8.0.2",
        "uuid": "13.0.0"
@@ -23,16 +23,16 @@
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-        "@typescript-eslint/eslint-plugin": "8.46.4",
-        "@typescript-eslint/parser": "8.46.4",
-        "@vitest/ui": "4.0.9",
+        "@typescript-eslint/eslint-plugin": "8.47.0",
+        "@typescript-eslint/parser": "8.47.0",
+        "@vitest/ui": "4.0.10",
        "eslint": "9.39.1",
        "eslint-config-prettier": "10.1.8",
        "globals": "16.5.0",
        "prettier": "3.6.2",
        "ts-node": "10.9.2",
        "typescript": "5.9.3",
-        "vitest": "4.0.9"
+        "vitest": "4.0.10"
      }
    },
    "node_modules/@agentclientprotocol/sdk": {
@@ -45,9 +45,9 @@
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    },
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+      "version": "0.1.44",
+      "resolved": "https://registry.npmjs.org/@anthropic-ai/claude-agent-sdk/-/claude-agent-sdk-0.1.44.tgz",
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      "license": "SEE LICENSE IN README.md",
      "engines": {
        "node": ">=18.0.0"
@@ -65,9 +65,9 @@
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    },
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+      "version": "2.0.44",
+      "resolved": "https://registry.npmjs.org/@anthropic-ai/claude-code/-/claude-code-2.0.44.tgz",
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      "license": "SEE LICENSE IN README.md",
      "bin": {
        "claude": "cli.js"
@@ -1556,17 +1556,17 @@
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+      "version": "4.0.10",
+      "resolved": "https://registry.npmjs.org/@vitest/snapshot/-/snapshot-4.0.10.tgz",
+      "integrity": "sha512-2N4X2ZZl7kZw0qeGdQ41H0KND96L3qX1RgwuCfy6oUsF2ISGD/HpSbmms+CkIOsQmg2kulwfhJ4CI0asnZlvkg==",
      "dev": true,
      "license": "MIT",
      "dependencies": {
-        "@vitest/pretty-format": "4.0.9",
+        "@vitest/pretty-format": "4.0.10",
        "magic-string": "^0.30.21",
        "pathe": "^2.0.3"
      },
@@ -1879,9 +1879,9 @@
      }
    },
    "node_modules/@vitest/spy": {
-      "version": "4.0.9",
-      "resolved": "https://registry.npmjs.org/@vitest/spy/-/spy-4.0.9.tgz",
-      "integrity": "sha512-J9Ttsq0hDXmxmT8CUOWUr1cqqAj2FJRGTdyEjSR+NjoOGKEqkEWj+09yC0HhI8t1W6t4Ctqawl1onHgipJve1A==",
+      "version": "4.0.10",
+      "resolved": "https://registry.npmjs.org/@vitest/spy/-/spy-4.0.10.tgz",
+      "integrity": "sha512-AsY6sVS8OLb96GV5RoG8B6I35GAbNrC49AO+jNRF9YVGb/g9t+hzNm1H6kD0NDp8tt7VJLs6hb7YMkDXqu03iw==",
      "dev": true,
      "license": "MIT",
      "funding": {
@@ -1889,14 +1889,14 @@
      }
    },
    "node_modules/@vitest/ui": {
-      "version": "4.0.9",
-      "resolved": "https://registry.npmjs.org/@vitest/ui/-/ui-4.0.9.tgz",
-      "integrity": "sha512-6HV2HHl9aRJ09TlYj/WAQxaa797Ezb5u0LpgabthlASAUAWKgw/W1DSPX7t848mMZmIUvzZgnUHGIylAoYHP0w==",
+      "version": "4.0.10",
+      "resolved": "https://registry.npmjs.org/@vitest/ui/-/ui-4.0.10.tgz",
+      "integrity": "sha512-oWtNM89Np+YsQO3ttT5i1Aer/0xbzQzp66NzuJn/U16bB7MnvSzdLKXgk1kkMLYyKSSzA2ajzqMkYheaE9opuQ==",
      "dev": true,
      "license": "MIT",
      "peer": true,
      "dependencies": {
-        "@vitest/utils": "4.0.9",
+        "@vitest/utils": "4.0.10",
        "fflate": "^0.8.2",
        "flatted": "^3.3.3",
        "pathe": "^2.0.3",
@@ -1908,17 +1908,17 @@
        "url": "https://opencollective.com/vitest"
      },
      "peerDependencies": {
-        "vitest": "4.0.9"
+        "vitest": "4.0.10"
      }
    },
    "node_modules/@vitest/utils": {
-      "version": "4.0.9",
-      "resolved": "https://registry.npmjs.org/@vitest/utils/-/utils-4.0.9.tgz",
-      "integrity": "sha512-cEol6ygTzY4rUPvNZM19sDf7zGa35IYTm9wfzkHoT/f5jX10IOY7QleWSOh5T0e3I3WVozwK5Asom79qW8DiuQ==",
+      "version": "4.0.10",
+      "resolved": "https://registry.npmjs.org/@vitest/utils/-/utils-4.0.10.tgz",
+      "integrity": "sha512-kOuqWnEwZNtQxMKg3WmPK1vmhZu9WcoX69iwWjVz+jvKTsF1emzsv3eoPcDr6ykA3qP2bsCQE7CwqfNtAVzsmg==",
      "dev": true,
      "license": "MIT",
      "dependencies": {
-        "@vitest/pretty-format": "4.0.9",
+        "@vitest/pretty-format": "4.0.10",
        "tinyrainbow": "^3.0.3"
      },
      "funding": {
@@ -4599,20 +4599,20 @@
      }
    },
    "node_modules/vitest": {
-      "version": "4.0.9",
-      "resolved": "https://registry.npmjs.org/vitest/-/vitest-4.0.9.tgz",
-      "integrity": "sha512-E0Ja2AX4th+CG33yAFRC+d1wFx2pzU5r6HtG6LiPSE04flaE0qB6YyjSw9ZcpJAtVPfsvZGtJlKWZpuW7EHRxg==",
+      "version": "4.0.10",
+      "resolved": "https://registry.npmjs.org/vitest/-/vitest-4.0.10.tgz",
+      "integrity": "sha512-2Fqty3MM9CDwOVet/jaQalYlbcjATZwPYGcqpiYQqgQ/dLC7GuHdISKgTYIVF/kaishKxLzleKWWfbSDklyIKg==",
      "dev": true,
      "license": "MIT",
      "peer": true,
      "dependencies": {
-        "@vitest/expect": "4.0.9",
-        "@vitest/mocker": "4.0.9",
-        "@vitest/pretty-format": "4.0.9",
-        "@vitest/runner": "4.0.9",
-        "@vitest/snapshot": "4.0.9",
-        "@vitest/spy": "4.0.9",
-        "@vitest/utils": "4.0.9",
+        "@vitest/expect": "4.0.10",
+        "@vitest/mocker": "4.0.10",
+        "@vitest/pretty-format": "4.0.10",
+        "@vitest/runner": "4.0.10",
+        "@vitest/snapshot": "4.0.10",
+        "@vitest/spy": "4.0.10",
+        "@vitest/utils": "4.0.10",
        "debug": "^4.4.3",
        "es-module-lexer": "^1.7.0",
        "expect-type": "^1.2.2",
@@ -4640,10 +4640,10 @@
        "@edge-runtime/vm": "*",
        "@types/debug": "^4.1.12",
        "@types/node": "^20.0.0 || ^22.0.0 || >=24.0.0",
-        "@vitest/browser-playwright": "4.0.9",
-        "@vitest/browser-preview": "4.0.9",
-        "@vitest/browser-webdriverio": "4.0.9",
-        "@vitest/ui": "4.0.9",
+        "@vitest/browser-playwright": "4.0.10",
+        "@vitest/browser-preview": "4.0.10",
+        "@vitest/browser-webdriverio": "4.0.10",
+        "@vitest/ui": "4.0.10",
        "happy-dom": "*",
        "jsdom": "*"
      },
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
  "publishConfig": {
    "access": "public"
  },
-  "version": "0.10.4",
+  "version": "0.10.5",
  "description": "An ACP-compatible coding agent powered by the Claude Code SDK (TypeScript)",
  "main": "dist/lib.js",
  "bin": {
@@ -52,8 +52,8 @@
  "license": "Apache-2.0",
  "dependencies": {
    "@agentclientprotocol/sdk": "0.5.1",
-    "@anthropic-ai/claude-agent-sdk": "0.1.42",
-    "@anthropic-ai/claude-code": "2.0.42",
+    "@anthropic-ai/claude-agent-sdk": "0.1.44",
+    "@anthropic-ai/claude-code": "2.0.44",
    "@modelcontextprotocol/sdk": "1.22.0",
    "diff": "8.0.2",
    "uuid": "13.0.0"
@@ -62,15 +62,15 @@
    "@anthropic-ai/sdk": "0.69.0",
    "@types/node": "24.10.1",
    "@types/uuid": "10.0.0",
-    "@typescript-eslint/eslint-plugin": "8.46.4",
-    "@typescript-eslint/parser": "8.46.4",
-    "@vitest/ui": "4.0.9",
+    "@typescript-eslint/eslint-plugin": "8.47.0",
+    "@typescript-eslint/parser": "8.47.0",
+    "@vitest/ui": "4.0.10",
    "eslint": "9.39.1",
    "eslint-config-prettier": "10.1.8",
    "globals": "16.5.0",
    "prettier": "3.6.2",
    "ts-node": "10.9.2",
    "typescript": "5.9.3",
-    "vitest": "4.0.9"
+    "vitest": "4.0.10"
  }
 }
--- a/src/acp-agent.ts
+++ b/src/acp-agent.ts
@@ -92,8 +92,6 @@ type ToolUseCache = {
  };
 };

-const DEFAULT_MODEL_ID = "default";
-
 // Bypass Permissions doesn't work if we are a root/sudo user
 const IS_ROOT = (process.geteuid?.() ?? process.getuid?.()) === 0;

@@ -193,12 +191,15 @@ export class ClaudeAcpAgent implements Agent {
      }
    }

-    const server = createMcpServer(this, sessionId, this.clientCapabilities);
-    mcpServers["acp"] = {
-      type: "sdk",
-      name: "acp",
-      instance: server,
-    };
+    // Only add the acp MCP server if built-in tools are not disabled
+    if (!params._meta?.disableBuiltInTools) {
+      const server = createMcpServer(this, sessionId, this.clientCapabilities);
+      mcpServers["acp"] = {
+        type: "sdk",
+        name: "acp",
+        instance: server,
+      };
+    }

    let systemPrompt: Options["systemPrompt"] = { type: "preset", preset: "claude_code" };
    if (params._meta?.systemPrompt) {
@@ -245,16 +246,49 @@ export class ClaudeAcpAgent implements Agent {

    const allowedTools = [];
    const disallowedTools = [];
-    if (this.clientCapabilities?.fs?.readTextFile) {
-      allowedTools.push(toolNames.read);
-      disallowedTools.push("Read");
-    }
-    if (this.clientCapabilities?.fs?.writeTextFile) {
-      disallowedTools.push("Write", "Edit");
-    }
-    if (this.clientCapabilities?.terminal) {
-      allowedTools.push(toolNames.bashOutput, toolNames.killShell);
-      disallowedTools.push("Bash", "BashOutput", "KillShell");
+
+    // Check if built-in tools should be disabled
+    const disableBuiltInTools = params._meta?.disableBuiltInTools === true;
+
+    if (!disableBuiltInTools) {
+      if (this.clientCapabilities?.fs?.readTextFile) {
+        allowedTools.push(toolNames.read);
+        disallowedTools.push("Read");
+      }
+      if (this.clientCapabilities?.fs?.writeTextFile) {
+        disallowedTools.push("Write", "Edit");
+      }
+      if (this.clientCapabilities?.terminal) {
+        allowedTools.push(toolNames.bashOutput, toolNames.killShell);
+        disallowedTools.push("Bash", "BashOutput", "KillShell");
+      }
+    } else {
+      // When built-in tools are disabled, explicitly disallow all of them
+      disallowedTools.push(
+        toolNames.read,
+        toolNames.write,
+        toolNames.edit,
+        toolNames.bash,
+        toolNames.bashOutput,
+        toolNames.killShell,
+        "Read",
+        "Write",
+        "Edit",
+        "Bash",
+        "BashOutput",
+        "KillShell",
+        "Glob",
+        "Grep",
+        "Task",
+        "TodoWrite",
+        "ExitPlanMode",
+        "WebSearch",
+        "WebFetch",
+        "AskUserQuestion",
+        "SlashCommand",
+        "Skill",
+        "NotebookEdit",
+      );
    }

    if (allowedTools.length > 0) {
@@ -367,18 +401,33 @@ export class ClaudeAcpAgent implements Agent {
            return { stopReason: "cancelled" };
          }

-          // todo!() how is rate-limiting handled?
          switch (message.subtype) {
            case "success": {
              if (message.result.includes("Please run /login")) {
                throw RequestError.authRequired();
              }
+              if (message.is_error) {
+                throw RequestError.internalError(undefined, message.result);
+              }
              return { stopReason: "end_turn" };
            }
            case "error_during_execution":
+              if (message.is_error) {
+                throw RequestError.internalError(
+                  undefined,
+                  message.errors.join(", ") || message.subtype,
+                );
+              }
              return { stopReason: "end_turn" };
            case "error_max_budget_usd":
            case "error_max_turns":
+            case "error_max_structured_output_retries":
+              if (message.is_error) {
+                throw RequestError.internalError(
+                  undefined,
+                  message.errors.join(", ") || message.subtype,
+                );
+              }
              return { stopReason: "max_turn_requests" };
            default:
              unreachable(message);
@@ -653,9 +702,8 @@ export class ClaudeAcpAgent implements Agent {
 async function getAvailableModels(query: Query): Promise<SessionModelState> {
  const models = await query.supportedModels();

-  // Query doesn't give us access to the currently selected model, so we default to "default" if it is there,
-  // otherwise we just choose the first model in the list.
-  const currentModel = models.find((model) => model.value === DEFAULT_MODEL_ID) || models[0];
+  // Query doesn't give us access to the currently selected model, so we just choose the first model in the list.
+  const currentModel = models[0];
  await query.setModel(currentModel.value);

  const availableModels = models.map((model) => ({
Author	SHA1	Message	Date
Ben Brandt	ef209d9d12	Don't special-case "default" model id (#166 ) A model of id "default" only shows up sometimes in certain plans. So rather than special-case this one, we just take the first one in the list.	2025-11-18 10:51:20 +00:00
Ben Brandt	91b00b71e3	Report errors from "status" messages (#165 ) The "status" message may say "success" but can actually have an error which we weren't surfacing. We should now be returning a more helpful message to the user. Closes #161 and possibly #146	2025-11-18 10:30:30 +00:00
Ben Brandt	101a527732	Update to claude-agent-sdk 0.1.44 (#164 )	2025-11-18 09:59:41 +00:00
Amos Wenger	59c5a0a8b8	Add experimental support for disabling built-in tools via _meta flag (#158 ) Add ability to disable built-in tools (Read, Write, Edit, Bash, etc.) when `_meta.disableBuiltInTools` is set to true. This allows clients to rely solely on MCP tools without the built-in tool implementations. --- This is just my take on #157 — not necessarily the one that makes sense /cc @benbrandt --------- Co-authored-by: Claude <noreply@anthropic.com> Co-authored-by: Ben Brandt <benjamin.j.brandt@gmail.com>	2025-11-17 10:31:59 +00:00