phabricator-mcp

An MCP (Model Context Protocol) server that wraps Phabricator's Conduit API, enabling any MCP client to interact with Phabricator tasks, code reviews, repositories, and more.

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Installation

Claude Code (CLI)

claude mcp add --scope user phabricator -- npx github:freelancer/phabricator-mcp

Or with environment variables (if not using ~/.arcrc):

claude mcp add --scope user phabricator \
  -e PHABRICATOR_URL=https://phabricator.example.com \
  -e PHABRICATOR_API_TOKEN=api-xxxxx \
  -- npx github:freelancer/phabricator-mcp

The --scope user flag installs the server globally, making it available in all projects.

Codex (OpenAI CLI)

Add to your Codex config (~/.codex/config.json):

{
  "mcpServers": {
    "phabricator": {
      "command": "npx",
      "args": ["github:freelancer/phabricator-mcp"],
      "env": {
        "PHABRICATOR_URL": "https://phabricator.example.com",
        "PHABRICATOR_API_TOKEN": "api-xxxxxxxxxxxxx"
      }
    }
  }
}

opencode

Add to your opencode config (~/.config/opencode/config.json):

{
  "mcp": {
    "servers": {
      "phabricator": {
        "command": "npx",
        "args": ["github:freelancer/phabricator-mcp"],
        "env": {
          "PHABRICATOR_URL": "https://phabricator.example.com",
          "PHABRICATOR_API_TOKEN": "api-xxxxxxxxxxxxx"
        }
      }
    }
  }
}

VS Code with Claude Extension

Add to your VS Code settings.json:

{
  "claude.mcpServers": {
    "phabricator": {
      "command": "npx",
      "args": ["github:freelancer/phabricator-mcp"],
      "env": {
        "PHABRICATOR_URL": "https://phabricator.example.com",
        "PHABRICATOR_API_TOKEN": "api-xxxxxxxxxxxxx"
      }
    }
  }
}

Cursor

Add to your Cursor MCP config (~/.cursor/mcp.json):

{
  "mcpServers": {
    "phabricator": {
      "command": "npx",
      "args": ["github:freelancer/phabricator-mcp"],
      "env": {
        "PHABRICATOR_URL": "https://phabricator.example.com",
        "PHABRICATOR_API_TOKEN": "api-xxxxxxxxxxxxx"
      }
    }
  }
}

GitHub Copilot (VS Code)

Add to your VS Code settings.json:

{
  "github.copilot.chat.mcp.servers": {
    "phabricator": {
      "command": "npx",
      "args": ["github:freelancer/phabricator-mcp"],
      "env": {
        "PHABRICATOR_URL": "https://phabricator.example.com",
        "PHABRICATOR_API_TOKEN": "api-xxxxxxxxxxxxx"
      }
    }
  }
}

Configuration

The server automatically reads configuration from ~/.arcrc (created by Arcanist). No additional configuration is needed if you've already set up arc.

Alternatively, set environment variables (which take precedence over .arcrc):

• PHABRICATOR_URL - Phabricator instance URL
• PHABRICATOR_API_TOKEN - Conduit API token

You can get an API token from your Phabricator instance at: Settings > Conduit API Tokens

Recommended: Allow Read-Only Tool Permissions

By default, Claude Code will prompt you for permission each time a Phabricator tool is called. It's recommended to allowlist the read-only tools so they run without prompts, while keeping write operations (create, edit, comment) behind a confirmation step.

Add to your ~/.claude/settings.json:

{
  "permissions": {
    "allow": [
      "mcp__phabricator__phabricator_task_search",
      "mcp__phabricator__phabricator_revision_search",
      "mcp__phabricator__phabricator_diff_search",
      "mcp__phabricator__phabricator_get_raw_diff",
      "mcp__phabricator__phabricator_repository_search",
      "mcp__phabricator__phabricator_commit_search",
      "mcp__phabricator__phabricator_user_whoami",
      "mcp__phabricator__phabricator_user_search",
      "mcp__phabricator__phabricator_project_search",
      "mcp__phabricator__phabricator_column_search",
      "mcp__phabricator__phabricator_paste_search",
      "mcp__phabricator__phabricator_document_search",
      "mcp__phabricator__phabricator_blog_search",
      "mcp__phabricator__phabricator_blog_post_search",
      "mcp__phabricator__phabricator_phid_lookup",
      "mcp__phabricator__phabricator_phid_query"
    ]
  }
}

To allowlist all tools including write operations, use "mcp__phabricator__*" instead.

Available Tools

Task Management (Maniphest)

Code Reviews (Differential)

Repositories (Diffusion)

Users

Projects

Pastes

Wiki (Phriction)

Blogs (Phame)

PHID Utilities

Usage

Once connected, just ask your AI assistant to perform Phabricator tasks in natural language:

Tasks

• "Show my assigned tasks"
• "Create a task titled 'Fix login bug' in project Backend"
• "Add a comment to T12345 saying the fix is ready for review"
• "Close task T12345"

Code Reviews

• "Show my open diffs"
• "What's the status of D6789?"
• "Review the code changes in D6789"
• "Add @alice as a reviewer to D6789"

Search & Lookup

• "Find user john.doe"
• "Search for projects with 'backend' in the name"
• "Search commits by author alice"
• "Look up T123 and D456"

Wiki & Pastes

• "Find wiki pages about deployment"
• "Create a paste with this error log"

Blogs

• "Search for blog posts about release notes"
• "Create a new draft blog post titled 'Q1 Update' on the engineering blog"
• "Publish blog post J42"
• "Add a comment to blog post J15"

The appropriate tools are called automatically based on your request.

Development

git clone https://github.com/freelancer/phabricator-mcp.git
cd phabricator-mcp
npm install
npm run build
npm run dev  # watch mode

Architecture

• src/index.ts - Entry point, MCP server with stdio transport
• src/config.ts - Config loader (reads ~/.arcrc or env vars)
• src/client/conduit.ts - Phabricator Conduit API client
• src/tools/*.ts - Tool implementations per Phabricator application

License

MIT