fix: specify baseUrl in Octokit (#107) (#108)

The last message in the Claude Code output does not have a role, but instead has a field "type" set to "result". With the current condition, the duration is never appended to the header of the comments.

.github/workflows/claude.yml

@@ -36,3 +36,4 @@ jobs:
           anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
           allowed_tools: "Bash(bun install),Bash(bun test:*),Bash(bun run format),Bash(bun typecheck)"
           custom_instructions: "You have also been granted tools for editing files and running bun commands (install, run, test, typecheck) for testing your changes: bun install, bun test, bun run format, bun typecheck."
+          model: "claude-opus-4-20250514"

FAQ.md

@@ -6,7 +6,7 @@ This FAQ addresses common questions and gotchas when using the Claude Code GitHu
 
 ### Why doesn't tagging @claude from my automated workflow work?
 
-The `github-actions` user (and other GitHub Apps/bots) cannot trigger subsequent GitHub Actions workflows. This is a GitHub security feature to prevent infinite loops. To make this work, you need to use a Personal Access Token (PAT) instead, which will act as a regular user. When posting a comment on an issue or PR from your workflow, use your PAT instead of the `GITHUB_TOKEN` generated in your workflow.
+The `github-actions` user cannot trigger subsequent GitHub Actions workflows. This is a GitHub security feature to prevent infinite loops. To make this work, you need to use a Personal Access Token (PAT) instead, which will act as a regular user, or use a separate app token of your own. When posting a comment on an issue or PR from your workflow, use your PAT instead of the `GITHUB_TOKEN` generated in your workflow.
 
 ### Why does Claude say I don't have permission to trigger it?
 

README.md

@@ -82,7 +82,6 @@ jobs:
 | `allowed_tools`       | Additional tools for Claude to use (the base GitHub tools will always be included)                                   | No       | ""        |
 | `disallowed_tools`    | Tools that Claude should never use                                                                                   | No       | ""        |
 | `custom_instructions` | Additional custom instructions to include in the prompt for Claude                                                   | No       | ""        |
-| `mcp_config`          | Additional MCP configuration (JSON string) that merges with the built-in GitHub MCP servers                          | No       | ""        |
 | `assignee_trigger`    | The assignee username that triggers the action (e.g. @claude). Only used for issue assignment                        | No       | -         |
 | `trigger_phrase`      | The trigger phrase to look for in comments, issue/PR bodies, and issue titles                                        | No       | `@claude` |
 
@@ -90,61 +89,6 @@ jobs:
 
 > **Note**: This action is currently in beta. Features and APIs may change as we continue to improve the integration.
 
-### Using Custom MCP Configuration
-
-The `mcp_config` input allows you to add custom MCP (Model Context Protocol) servers to extend Claude's capabilities. These servers merge with the built-in GitHub MCP servers.
-
-#### Basic Example: Adding a Sequential Thinking Server
-
-```yaml
-- uses: anthropics/claude-code-action@beta
-  with:
-    anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
-    mcp_config: |
-      {
-        "mcpServers": {
-          "sequential-thinking": {
-            "command": "npx",
-            "args": [
-              "-y",
-              "@modelcontextprotocol/server-sequential-thinking"
-            ]
-          }
-        }
-      }
-    allowed_tools: "mcp__sequential-thinking__sequentialthinking" # Important: Each MCP tool from your server must be listed here, comma-separated
-    # ... other inputs
-```
-
-#### Passing Secrets to MCP Servers
-
-For MCP servers that require sensitive information like API keys or tokens, use GitHub Secrets in the environment variables:
-
-```yaml
-- uses: anthropics/claude-code-action@beta
-  with:
-    anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
-    mcp_config: |
-      {
-        "mcpServers": {
-          "custom-api-server": {
-            "command": "npx",
-            "args": ["-y", "@example/api-server"],
-            "env": {
-              "API_KEY": "${{ secrets.CUSTOM_API_KEY }}",
-              "BASE_URL": "https://api.example.com"
-            }
-          }
-        }
-      }
-    # ... other inputs
-```
-
-**Important**:
-
-- Always use GitHub Secrets (`${{ secrets.SECRET_NAME }}`) for sensitive values like API keys, tokens, or passwords. Never hardcode secrets directly in the workflow file.
-- Your custom servers will override any built-in servers with the same name.
-
 ## Examples
 
 ### Ways to Tag @claude

action.yml

@@ -39,10 +39,6 @@ inputs:
     description: "Direct instruction for Claude (bypasses normal trigger detection)"
     required: false
     default: ""
-  mcp_config:
-    description: "Additional MCP configuration (JSON string) that merges with the built-in GitHub MCP servers"
-    required: false
-    default: ""
 
   # Auth configuration
   anthropic_api_key:
@@ -96,7 +92,6 @@ runs:
         ALLOWED_TOOLS: ${{ inputs.allowed_tools }}
         CUSTOM_INSTRUCTIONS: ${{ inputs.custom_instructions }}
         DIRECT_PROMPT: ${{ inputs.direct_prompt }}
-        MCP_CONFIG: ${{ inputs.mcp_config }}
         OVERRIDE_GITHUB_TOKEN: ${{ inputs.github_token }}
         GITHUB_RUN_ID: ${{ github.run_id }}
 

src/entrypoints/prepare.ts

@@ -84,13 +84,11 @@ async function run() {
     );
 
     // Step 11: Get MCP configuration
-    const additionalMcpConfig = process.env.MCP_CONFIG || "";
     const mcpConfig = await prepareMcpConfig(
       githubToken,
       context.repository.owner,
       context.repository.repo,
       branchInfo.currentBranch,
-      additionalMcpConfig,
     );
     core.setOutput("mcp_config", mcpConfig);
   } catch (error) {

src/entrypoints/update-comment-link.ts

@@ -166,7 +166,7 @@ async function run() {
           if (Array.isArray(outputData) && outputData.length > 0) {
             const lastElement = outputData[outputData.length - 1];
             if (
-              lastElement.role === "system" &&
+              lastElement.type === "result" &&
               "cost_usd" in lastElement &&
               "duration_ms" in lastElement
             ) {

src/github/api/client.ts

@@ -9,7 +9,10 @@ export type Octokits = {
 
 export function createOctokit(token: string): Octokits {
   return {
-    rest: new Octokit({ auth: token }),
+    rest: new Octokit({
+      auth: token,
+      baseUrl: GITHUB_API_URL,
+    }),
     graphql: graphql.defaults({
       baseUrl: GITHUB_API_URL,
       headers: {

src/mcp/install-mcp-server.ts

@@ -5,10 +5,9 @@ export async function prepareMcpConfig(
   owner: string,
   repo: string,
   branch: string,
-  additionalMcpConfig?: string,
 ): Promise<string> {
   try {
-    const baseMcpConfig = {
+    const mcpConfig = {
       mcpServers: {
         github: {
           command: "docker",
@@ -41,39 +40,7 @@ export async function prepareMcpConfig(
       },
     };
 
-    // Merge with additional MCP config if provided
-    if (additionalMcpConfig && additionalMcpConfig.trim()) {
-      try {
-        const additionalConfig = JSON.parse(additionalMcpConfig);
-
-        // Validate that parsed JSON is an object
-        if (typeof additionalConfig !== "object" || additionalConfig === null) {
-          throw new Error("MCP config must be a valid JSON object");
-        }
-
-        core.info(
-          "Merging additional MCP server configuration with built-in servers",
-        );
-
-        // Merge configurations with user config overriding built-in servers
-        const mergedConfig = {
-          ...baseMcpConfig,
-          ...additionalConfig,
-          mcpServers: {
-            ...baseMcpConfig.mcpServers,
-            ...additionalConfig.mcpServers,
-          },
-        };
-
-        return JSON.stringify(mergedConfig, null, 2);
-      } catch (parseError) {
-        core.warning(
-          `Failed to parse additional MCP config: ${parseError}. Using base config only.`,
-        );
-      }
-    }
-
-    return JSON.stringify(baseMcpConfig, null, 2);
+    return JSON.stringify(mcpConfig, null, 2);
   } catch (error) {
     core.setFailed(`Install MCP server failed with error: ${error}`);
     process.exit(1);

test/install-mcp-server.test.ts

@@ -1,344 +0,0 @@
-import { describe, test, expect, beforeEach, afterEach, spyOn } from "bun:test";
-import { prepareMcpConfig } from "../src/mcp/install-mcp-server";
-import * as core from "@actions/core";
-
-describe("prepareMcpConfig", () => {
-  let consoleInfoSpy: any;
-  let consoleWarningSpy: any;
-  let setFailedSpy: any;
-  let processExitSpy: any;
-
-  beforeEach(() => {
-    consoleInfoSpy = spyOn(core, "info").mockImplementation(() => {});
-    consoleWarningSpy = spyOn(core, "warning").mockImplementation(() => {});
-    setFailedSpy = spyOn(core, "setFailed").mockImplementation(() => {});
-    processExitSpy = spyOn(process, "exit").mockImplementation(() => {
-      throw new Error("Process exit");
-    });
-  });
-
-  afterEach(() => {
-    consoleInfoSpy.mockRestore();
-    consoleWarningSpy.mockRestore();
-    setFailedSpy.mockRestore();
-    processExitSpy.mockRestore();
-  });
-
-  test("should return base config when no additional config is provided", async () => {
-    const result = await prepareMcpConfig(
-      "test-token",
-      "test-owner",
-      "test-repo",
-      "test-branch",
-    );
-
-    const parsed = JSON.parse(result);
-    expect(parsed.mcpServers).toBeDefined();
-    expect(parsed.mcpServers.github).toBeDefined();
-    expect(parsed.mcpServers.github_file_ops).toBeDefined();
-    expect(parsed.mcpServers.github.env.GITHUB_PERSONAL_ACCESS_TOKEN).toBe(
-      "test-token",
-    );
-    expect(parsed.mcpServers.github_file_ops.env.GITHUB_TOKEN).toBe(
-      "test-token",
-    );
-    expect(parsed.mcpServers.github_file_ops.env.REPO_OWNER).toBe("test-owner");
-    expect(parsed.mcpServers.github_file_ops.env.REPO_NAME).toBe("test-repo");
-    expect(parsed.mcpServers.github_file_ops.env.BRANCH_NAME).toBe(
-      "test-branch",
-    );
-  });
-
-  test("should return base config when additional config is empty string", async () => {
-    const result = await prepareMcpConfig(
-      "test-token",
-      "test-owner",
-      "test-repo",
-      "test-branch",
-      "",
-    );
-
-    const parsed = JSON.parse(result);
-    expect(parsed.mcpServers).toBeDefined();
-    expect(parsed.mcpServers.github).toBeDefined();
-    expect(parsed.mcpServers.github_file_ops).toBeDefined();
-    expect(consoleWarningSpy).not.toHaveBeenCalled();
-  });
-
-  test("should return base config when additional config is whitespace only", async () => {
-    const result = await prepareMcpConfig(
-      "test-token",
-      "test-owner",
-      "test-repo",
-      "test-branch",
-      "   \n\t  ",
-    );
-
-    const parsed = JSON.parse(result);
-    expect(parsed.mcpServers).toBeDefined();
-    expect(parsed.mcpServers.github).toBeDefined();
-    expect(parsed.mcpServers.github_file_ops).toBeDefined();
-    expect(consoleWarningSpy).not.toHaveBeenCalled();
-  });
-
-  test("should merge valid additional config with base config", async () => {
-    const additionalConfig = JSON.stringify({
-      mcpServers: {
-        custom_server: {
-          command: "custom-command",
-          args: ["arg1", "arg2"],
-          env: {
-            CUSTOM_ENV: "custom-value",
-          },
-        },
-      },
-    });
-
-    const result = await prepareMcpConfig(
-      "test-token",
-      "test-owner",
-      "test-repo",
-      "test-branch",
-      additionalConfig,
-    );
-
-    const parsed = JSON.parse(result);
-    expect(consoleInfoSpy).toHaveBeenCalledWith(
-      "Merging additional MCP server configuration with built-in servers",
-    );
-    expect(parsed.mcpServers.github).toBeDefined();
-    expect(parsed.mcpServers.github_file_ops).toBeDefined();
-    expect(parsed.mcpServers.custom_server).toBeDefined();
-    expect(parsed.mcpServers.custom_server.command).toBe("custom-command");
-    expect(parsed.mcpServers.custom_server.args).toEqual(["arg1", "arg2"]);
-    expect(parsed.mcpServers.custom_server.env.CUSTOM_ENV).toBe("custom-value");
-  });
-
-  test("should override built-in servers when additional config has same server names", async () => {
-    const additionalConfig = JSON.stringify({
-      mcpServers: {
-        github: {
-          command: "overridden-command",
-          args: ["overridden-arg"],
-          env: {
-            OVERRIDDEN_ENV: "overridden-value",
-          },
-        },
-      },
-    });
-
-    const result = await prepareMcpConfig(
-      "test-token",
-      "test-owner",
-      "test-repo",
-      "test-branch",
-      additionalConfig,
-    );
-
-    const parsed = JSON.parse(result);
-    expect(consoleInfoSpy).toHaveBeenCalledWith(
-      "Merging additional MCP server configuration with built-in servers",
-    );
-    expect(parsed.mcpServers.github.command).toBe("overridden-command");
-    expect(parsed.mcpServers.github.args).toEqual(["overridden-arg"]);
-    expect(parsed.mcpServers.github.env.OVERRIDDEN_ENV).toBe(
-      "overridden-value",
-    );
-    expect(
-      parsed.mcpServers.github.env.GITHUB_PERSONAL_ACCESS_TOKEN,
-    ).toBeUndefined();
-    expect(parsed.mcpServers.github_file_ops).toBeDefined();
-  });
-
-  test("should merge additional root-level properties", async () => {
-    const additionalConfig = JSON.stringify({
-      customProperty: "custom-value",
-      anotherProperty: {
-        nested: "value",
-      },
-      mcpServers: {
-        custom_server: {
-          command: "custom",
-        },
-      },
-    });
-
-    const result = await prepareMcpConfig(
-      "test-token",
-      "test-owner",
-      "test-repo",
-      "test-branch",
-      additionalConfig,
-    );
-
-    const parsed = JSON.parse(result);
-    expect(parsed.customProperty).toBe("custom-value");
-    expect(parsed.anotherProperty).toEqual({ nested: "value" });
-    expect(parsed.mcpServers.github).toBeDefined();
-    expect(parsed.mcpServers.custom_server).toBeDefined();
-  });
-
-  test("should handle invalid JSON gracefully", async () => {
-    const invalidJson = "{ invalid json }";
-
-    const result = await prepareMcpConfig(
-      "test-token",
-      "test-owner",
-      "test-repo",
-      "test-branch",
-      invalidJson,
-    );
-
-    const parsed = JSON.parse(result);
-    expect(consoleWarningSpy).toHaveBeenCalledWith(
-      expect.stringContaining("Failed to parse additional MCP config:"),
-    );
-    expect(parsed.mcpServers.github).toBeDefined();
-    expect(parsed.mcpServers.github_file_ops).toBeDefined();
-  });
-
-  test("should handle non-object JSON values", async () => {
-    const nonObjectJson = JSON.stringify("string value");
-
-    const result = await prepareMcpConfig(
-      "test-token",
-      "test-owner",
-      "test-repo",
-      "test-branch",
-      nonObjectJson,
-    );
-
-    const parsed = JSON.parse(result);
-    expect(consoleWarningSpy).toHaveBeenCalledWith(
-      expect.stringContaining("Failed to parse additional MCP config:"),
-    );
-    expect(consoleWarningSpy).toHaveBeenCalledWith(
-      expect.stringContaining("MCP config must be a valid JSON object"),
-    );
-    expect(parsed.mcpServers.github).toBeDefined();
-    expect(parsed.mcpServers.github_file_ops).toBeDefined();
-  });
-
-  test("should handle null JSON value", async () => {
-    const nullJson = JSON.stringify(null);
-
-    const result = await prepareMcpConfig(
-      "test-token",
-      "test-owner",
-      "test-repo",
-      "test-branch",
-      nullJson,
-    );
-
-    const parsed = JSON.parse(result);
-    expect(consoleWarningSpy).toHaveBeenCalledWith(
-      expect.stringContaining("Failed to parse additional MCP config:"),
-    );
-    expect(consoleWarningSpy).toHaveBeenCalledWith(
-      expect.stringContaining("MCP config must be a valid JSON object"),
-    );
-    expect(parsed.mcpServers.github).toBeDefined();
-    expect(parsed.mcpServers.github_file_ops).toBeDefined();
-  });
-
-  test("should handle array JSON value", async () => {
-    const arrayJson = JSON.stringify([1, 2, 3]);
-
-    const result = await prepareMcpConfig(
-      "test-token",
-      "test-owner",
-      "test-repo",
-      "test-branch",
-      arrayJson,
-    );
-
-    const parsed = JSON.parse(result);
-    // Arrays are objects in JavaScript, so they pass the object check
-    // But they'll fail when trying to spread or access mcpServers property
-    expect(consoleInfoSpy).toHaveBeenCalledWith(
-      "Merging additional MCP server configuration with built-in servers",
-    );
-    expect(parsed.mcpServers.github).toBeDefined();
-    expect(parsed.mcpServers.github_file_ops).toBeDefined();
-    // The array will be spread into the config (0: 1, 1: 2, 2: 3)
-    expect(parsed[0]).toBe(1);
-    expect(parsed[1]).toBe(2);
-    expect(parsed[2]).toBe(3);
-  });
-
-  test("should merge complex nested configurations", async () => {
-    const additionalConfig = JSON.stringify({
-      mcpServers: {
-        server1: {
-          command: "cmd1",
-          env: { KEY1: "value1" },
-        },
-        server2: {
-          command: "cmd2",
-          env: { KEY2: "value2" },
-        },
-        github_file_ops: {
-          command: "overridden",
-          env: { CUSTOM: "value" },
-        },
-      },
-      otherConfig: {
-        nested: {
-          deeply: "value",
-        },
-      },
-    });
-
-    const result = await prepareMcpConfig(
-      "test-token",
-      "test-owner",
-      "test-repo",
-      "test-branch",
-      additionalConfig,
-    );
-
-    const parsed = JSON.parse(result);
-    expect(parsed.mcpServers.server1).toBeDefined();
-    expect(parsed.mcpServers.server2).toBeDefined();
-    expect(parsed.mcpServers.github).toBeDefined();
-    expect(parsed.mcpServers.github_file_ops.command).toBe("overridden");
-    expect(parsed.mcpServers.github_file_ops.env.CUSTOM).toBe("value");
-    expect(parsed.otherConfig.nested.deeply).toBe("value");
-  });
-
-  test("should preserve GITHUB_ACTION_PATH in file_ops server args", async () => {
-    const oldEnv = process.env.GITHUB_ACTION_PATH;
-    process.env.GITHUB_ACTION_PATH = "/test/action/path";
-
-    const result = await prepareMcpConfig(
-      "test-token",
-      "test-owner",
-      "test-repo",
-      "test-branch",
-    );
-
-    const parsed = JSON.parse(result);
-    expect(parsed.mcpServers.github_file_ops.args[1]).toBe(
-      "/test/action/path/src/mcp/github-file-ops-server.ts",
-    );
-
-    process.env.GITHUB_ACTION_PATH = oldEnv;
-  });
-
-  test("should use process.cwd() when GITHUB_WORKSPACE is not set", async () => {
-    const oldEnv = process.env.GITHUB_WORKSPACE;
-    delete process.env.GITHUB_WORKSPACE;
-
-    const result = await prepareMcpConfig(
-      "test-token",
-      "test-owner",
-      "test-repo",
-      "test-branch",
-    );
-
-    const parsed = JSON.parse(result);
-    expect(parsed.mcpServers.github_file_ops.env.REPO_DIR).toBe(process.cwd());
-
-    process.env.GITHUB_WORKSPACE = oldEnv;
-  });
-});