Prep v0.9.0 (#134)

Closes #115. Thanks to @joeljohansson99 for reporting/debugging.

.github/workflows/publish.yml

@@ -4,7 +4,7 @@ on:
     tags:
       - "v*.*.*"
 jobs:
-  build:
+  publish-npm:
     runs-on: ubuntu-latest
     environment: release # Optional: for enhanced security
     permissions:
@@ -22,3 +22,15 @@ jobs:
       - run: npm ci
       - run: npm run build
       - run: npm publish
+  release:
+    runs-on: ubuntu-latest
+    needs: [publish-npm]
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
+      - name: Create Release
+        id: create_release
+        uses: softprops/action-gh-release@6da8fa9354ddfdc4aeace5fc48d7f679b5214090
+        with:
+          draft: true

.gitignore

@@ -1,2 +1,3 @@
 node_modules
 dist
+.DS_Store

CHANGELOG.md

@@ -1,5 +1,41 @@
 # Changelog
 
+## 0.9.0
+
+- Support slash commands coming from MCP servers (Prompts)
+
+## 0.8.0
+
+- Revert changes to filename for cli entrypoint
+- Provide library entrypoint via lib.ts
+
+## 0.7.0
+
+- Allow importing from this package as a library in addition to running it as a CLI. Allows for easier integration into existing node applications.
+- Update to @anthropic-ai/claude-agent-sdk@v0.1.27
+
+## 0.6.10
+
+- Provide `agentInfo` on initialization response.
+- Update to @agentclientprotocol/sdk@0.5.1
+- Fix crash when receiving a hook_response event
+- Fix for invalid locations when read call has no path
+
+## 0.6.9
+
+- Update to @anthropic-ai/claude-agent-sdk@v0.1.26
+- Update to @agentclientprotocol/sdk@0.5.0
+
+## 0.6.8
+
+- Fix for duplicate tokens appearing in thread with streaming enabled
+- Update to @anthropic-ai/claude-agent-sdk@v0.1.23
+- Update to @agentclientprotocol/sdk@0.4.9
+
+## 0.6.7
+
+- Fix for invalid plan input from the model introduced in latest agent-sdk
+
 ## 0.6.6
 
 - Do not enable bypassPermissions mode if in root/sudo mode, because Claude Code will not start

package.json

@@ -3,12 +3,12 @@
   "publishConfig": {
     "access": "public"
   },
+  "version": "0.9.0",
+  "description": "An ACP-compatible coding agent powered by the Claude Code SDK (TypeScript)",
+  "main": "dist/lib.js",
   "bin": {
     "claude-code-acp": "./dist/index.js"
   },
-  "version": "0.6.6",
-  "description": "An ACP-compatible coding agent powered by the Claude Code SDK (TypeScript)",
-  "main": "dist/index.js",
   "type": "module",
   "files": [
     "dist/",
@@ -51,30 +51,30 @@
   "author": "Zed Industries",
   "license": "Apache-2.0",
   "dependencies": {
-    "@agentclientprotocol/sdk": "0.4.8",
-    "@anthropic-ai/claude-agent-sdk": "0.1.21",
-    "@anthropic-ai/claude-code": "2.0.21",
-    "@modelcontextprotocol/sdk": "1.20.1",
+    "@agentclientprotocol/sdk": "0.5.1",
+    "@anthropic-ai/claude-agent-sdk": "0.1.27",
+    "@anthropic-ai/claude-code": "2.0.27",
+    "@modelcontextprotocol/sdk": "1.20.2",
     "diff": "8.0.2",
     "express": "5.1.0",
     "minimist": "1.2.8",
     "uuid": "13.0.0"
   },
   "devDependencies": {
-    "@anthropic-ai/sdk": "^0.67.0",
-    "@types/express": "5.0.3",
+    "@anthropic-ai/sdk": "0.67.0",
+    "@types/express": "5.0.4",
     "@types/minimist": "1.2.5",
-    "@types/node": "24.8.1",
+    "@types/node": "24.9.1",
     "@types/uuid": "10.0.0",
-    "@typescript-eslint/eslint-plugin": "8.46.1",
-    "@typescript-eslint/parser": "8.46.1",
-    "@vitest/ui": "3.2.4",
-    "eslint": "9.37.0",
+    "@typescript-eslint/eslint-plugin": "8.46.2",
+    "@typescript-eslint/parser": "8.46.2",
+    "@vitest/ui": "4.0.3",
+    "eslint": "9.38.0",
     "eslint-config-prettier": "10.1.8",
     "globals": "16.4.0",
     "prettier": "3.6.2",
     "ts-node": "10.9.2",
     "typescript": "5.9.3",
-    "vitest": "3.2.4"
+    "vitest": "4.0.3"
   }
 }

src/acp-agent.ts

@@ -55,6 +55,7 @@ import {
 } from "./tools.js";
 import { ContentBlockParam } from "@anthropic-ai/sdk/resources";
 import { BetaContentBlock, BetaRawContentBlockDelta } from "@anthropic-ai/sdk/resources/beta.mjs";
+import packageJson from "../package.json" with { type: "json" };
 
 type Session = {
   query: Query;
@@ -110,7 +111,6 @@ export class ClaudeAcpAgent implements Agent {
     this.clientCapabilities = request.clientCapabilities;
     return {
       protocolVersion: 1,
-      // todo!()
       agentCapabilities: {
         promptCapabilities: {
           image: true,
@@ -121,6 +121,11 @@ export class ClaudeAcpAgent implements Agent {
           sse: true,
         },
       },
+      agentInfo: {
+        name: packageJson.name,
+        title: "Claude Code",
+        version: packageJson.version,
+      },
       authMethods: [
         {
           description: "Run `claude /login` in the terminal",
@@ -205,9 +210,10 @@ export class ClaudeAcpAgent implements Agent {
       mcpServers,
       systemPrompt,
       settingSources: ["user", "project", "local"],
-      // If we want bypassPermissions to be an option, we have to start the session with it on.
-      // We change it immediately back to default below before returning the session.
-      permissionMode: IS_ROOT ? permissionMode : "bypassPermissions",
+      // If we want bypassPermissions to be an option, we have to allow it here.
+      // But it doesn't work in root mode, so we only activate it if it will work.
+      allowDangerouslySkipPermissions: !IS_ROOT,
+      permissionMode,
       permissionPromptToolName: PERMISSION_TOOL_NAME,
       stderr: (err) => console.error(err),
       // note: although not documented by the types, passing an absolute path
@@ -253,10 +259,6 @@ export class ClaudeAcpAgent implements Agent {
 
     const availableCommands = await getAvailableSlashCommands(q);
     const models = await getAvailableModels(q);
-    // Change it back to default
-    if (!IS_ROOT) {
-      await q.setPermissionMode(permissionMode);
-    }
 
     // Needs to happen after we return the session
     setTimeout(() => {
@@ -334,8 +336,11 @@ export class ClaudeAcpAgent implements Agent {
               break;
             case "compact_boundary":
               break;
+            case "hook_response":
+              // Todo: process via status api: https://docs.claude.com/en/docs/claude-code/hooks#hook-output
+              break;
             default:
-              unreachable(message as never);
+              unreachable(message);
           }
           break;
         case "result": {
@@ -427,7 +432,7 @@ export class ClaudeAcpAgent implements Agent {
           break;
         }
         default:
-          unreachable(message as never);
+          unreachable(message);
       }
     }
     throw new Error("Session did not end in result");
@@ -510,54 +515,30 @@ async function getAvailableModels(query: Query): Promise<SessionModelState> {
 
 async function getAvailableSlashCommands(query: Query): Promise<AvailableCommand[]> {
   const UNSUPPORTED_COMMANDS = [
-    "add-dir",
-    "agents", // Modal
-    "bashes", // Modal
-    "bug", // Modal
-    "clear", // Escape Codes
-    "config", // Modal
-    "context", // Escape Codes
-    "cost", // Escape Codes
-    "doctor", // Escape Codes
-    "exit",
-    "export", // Modal
-    "help", // Modal
-    "hooks", // Modal
-    "ide", // Modal
-    "install-github-app", // Modal
+    "context",
+    "cost",
     "login",
     "logout",
-    "memory",
-    "mcp",
-    "migrate-installer", // Modal
-    "model", // Not supported via SDK?
-    "output-style", // Modal
-    "output-style:new", // Modal
-    "permissions", // Modal
-    "privacy-settings",
-    "release-notes", // Escape Codes
-    "resume",
-    "status", // Not supported via SDK?
-    "statusline", // Not needed
-    "terminal-setup", // Not needed
-    "todos", // Escape Codes
-    "vim", // Not needed
+    "output-style:new",
+    "release-notes",
+    "todos",
   ];
   const commands = await query.supportedCommands();
 
   return commands
     .map((command) => {
       const input = command.argumentHint ? { hint: command.argumentHint } : null;
+      let name = command.name;
+      if (command.name.endsWith(" (MCP)")) {
+        name = `mcp:${name.replace(" (MCP)", "")}`;
+      }
       return {
-        name: command.name,
+        name,
         description: command.description || "",
         input,
       };
     })
-    .filter(
-      (command: AvailableCommand) =>
-        !(command.name.match(/\(MCP\)/) || UNSUPPORTED_COMMANDS.includes(command.name)),
-    );
+    .filter((command: AvailableCommand) => !UNSUPPORTED_COMMANDS.includes(command.name));
 }
 
 function formatUriAsLink(uri: string): string {
@@ -577,15 +558,23 @@ function formatUriAsLink(uri: string): string {
   }
 }
 
-function promptToClaude(prompt: PromptRequest): SDKUserMessage {
+export function promptToClaude(prompt: PromptRequest): SDKUserMessage {
   const content: any[] = [];
   const context: any[] = [];
 
   for (const chunk of prompt.prompt) {
     switch (chunk.type) {
-      case "text":
-        content.push({ type: "text", text: chunk.text });
+      case "text": {
+        let text = chunk.text;
+        // change /mcp:server:command args -> /server:command (MCP) args
+        const mcpMatch = text.match(/^\/mcp:([^:\s]+):(\S+)(\s+.*)?$/);
+        if (mcpMatch) {
+          const [, server, command, args] = mcpMatch;
+          text = `/${server}:${command} (MCP)${args || ""}`;
+        }
+        content.push({ type: "text", text });
         break;
+      }
       case "resource_link": {
         const formattedUri = formatUriAsLink(chunk.uri);
         content.push({
@@ -715,10 +704,13 @@ export function toAcpNotifications(
       case "mcp_tool_use": {
         toolUseCache[chunk.id] = chunk;
         if (chunk.name === "TodoWrite") {
-          update = {
-            sessionUpdate: "plan",
-            entries: planEntries(chunk.input as { todos: ClaudePlanEntry[] }),
-          };
+          // @ts-expect-error - sometimes input is empty object
+          if (Array.isArray(chunk.input.todos)) {
+            update = {
+              sessionUpdate: "plan",
+              entries: planEntries(chunk.input as { todos: ClaudePlanEntry[] }),
+            };
+          }
         } else {
           let rawInput;
           try {
@@ -791,14 +783,6 @@ export function streamEventToAcpNotifications(
 ): SessionNotification[] {
   const event = message.event;
   switch (event.type) {
-    case "message_start":
-      return toAcpNotifications(
-        event.message.content,
-        event.message.role,
-        sessionId,
-        toolUseCache,
-        fileContentCache,
-      );
     case "content_block_start":
       return toAcpNotifications(
         [event.content_block],
@@ -815,10 +799,11 @@ export function streamEventToAcpNotifications(
         toolUseCache,
         fileContentCache,
       );
+    // No content
+    case "message_start":
     case "message_delta":
     case "message_stop":
     case "content_block_stop":
-      // do we need stop reason?
       return [];
 
     default:

src/index.ts

@@ -19,7 +19,7 @@ process.on("unhandledRejection", (reason, promise) => {
   console.error("Unhandled Rejection at:", promise, "reason:", reason);
 });
 
-import { runAcp as runAcp } from "./acp-agent.js";
+import { runAcp } from "./acp-agent.js";
 runAcp();
 
 // Keep process alive

src/lib.ts

@@ -0,0 +1,25 @@
+// Export the main agent class and utilities for library usage
+export {
+  ClaudeAcpAgent,
+  runAcp,
+  toAcpNotifications,
+  streamEventToAcpNotifications,
+} from "./acp-agent.js";
+export {
+  loadManagedSettings,
+  applyEnvironmentSettings,
+  nodeToWebReadable,
+  nodeToWebWritable,
+  Pushable,
+  unreachable,
+} from "./utils.js";
+export {
+  createMcpServer,
+  createPermissionMcpServer,
+  PERMISSION_TOOL_NAME,
+  toolNames,
+} from "./mcp-server.js";
+export { toolInfoFromToolUse, planEntries, toolUpdateFromToolResult } from "./tools.js";
+
+// Export types
+export type { ClaudePlanEntry } from "./tools.js";

src/tests/acp-agent.test.ts

@@ -17,7 +17,7 @@ import {
 } from "@agentclientprotocol/sdk";
 import { nodeToWebWritable, nodeToWebReadable } from "../utils.js";
 import { markdownEscape, toolInfoFromToolUse, toolUpdateFromToolResult } from "../tools.js";
-import { toAcpNotifications } from "../acp-agent.js";
+import { toAcpNotifications, promptToClaude } from "../acp-agent.js";
 import { query, SDKAssistantMessage } from "@anthropic-ai/claude-agent-sdk";
 
 describe.skipIf(!process.env.RUN_INTEGRATION_TESTS)("ACP subprocess integration", () => {
@@ -783,6 +783,44 @@ describe("escape markdown", () => {
   });
 });
 
+describe("prompt conversion", () => {
+  it("should not change built-in slash commands", () => {
+    const message = promptToClaude({
+      sessionId: "test",
+      prompt: [
+        {
+          type: "text",
+          text: "/compact args",
+        },
+      ],
+    });
+    expect(message.message.content).toEqual([
+      {
+        text: "/compact args",
+        type: "text",
+      },
+    ]);
+  });
+
+  it("should remove MCP prefix from MCP slash commands", () => {
+    const message = promptToClaude({
+      sessionId: "test",
+      prompt: [
+        {
+          type: "text",
+          text: "/mcp:server:name args",
+        },
+      ],
+    });
+    expect(message.message.content).toEqual([
+      {
+        text: "/server:name (MCP) args",
+        type: "text",
+      },
+    ]);
+  });
+});
+
 describe("SDK behavior", () => {
   it.skipIf(!process.env.RUN_INTEGRATION_TESTS)(
     "query has a 'default' model",

src/tools.ts

@@ -113,12 +113,14 @@ export function toolInfoFromToolUse(
       return {
         title: "Read " + (input.file_path ?? "File") + limit,
         kind: "read",
-        locations: [
-          {
-            path: input.file_path,
-            line: input.offset ?? 0,
-          },
-        ],
+        locations: input.file_path
+          ? [
+              {
+                path: input.file_path,
+                line: input.offset ?? 0,
+              },
+            ]
+          : [],
         content: [],
       };
     }
@@ -344,7 +346,7 @@ export function toolInfoFromToolUse(
 
     case "TodoWrite":
       return {
-        title: input?.todos
+        title: Array.isArray(input?.todos)
           ? `Update TODOs: ${input.todos.map((todo: any) => todo.content).join(", ")}`
           : "Update TODOs",
         kind: "think",