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 @freelancercom/phabricator-mcp@latest

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 @freelancercom/phabricator-mcp@latest

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": ["@freelancercom/phabricator-mcp@latest"],
      "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": ["@freelancercom/phabricator-mcp@latest"],
        "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": ["@freelancercom/phabricator-mcp@latest"],
      "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": ["@freelancercom/phabricator-mcp@latest"],
      "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": ["@freelancercom/phabricator-mcp@latest"],
      "env": {
        "PHABRICATOR_URL": "https://phabricator.example.com",
        "PHABRICATOR_API_TOKEN": "api-xxxxxxxxxxxxx"
      }
    }
  }
}

Upgrading

The default install uses @freelancercom/phabricator-mcp@latest, which tells npx to check for updates on each run. No action needed.

If you pinned a specific version (e.g. @freelancercom/[email protected]) or omitted the version suffix, npx caches the package and won't pick up new versions. To upgrade:

npx clear-npx-cache

Then restart your MCP client.

Migrating from github:freelancer/phabricator-mcp

If you previously installed using the GitHub URL, update your config to use the npm package instead:

# Remove old server
claude mcp remove phabricator -s user

# Add new one
claude mcp add --scope user phabricator -- npx @freelancercom/phabricator-mcp@latest

For JSON configs, replace ["github:freelancer/phabricator-mcp"] with ["@freelancercom/phabricator-mcp@latest"] in your args.

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",
      "mcp__phabricator__phabricator_transaction_search",
      "mcp__phabricator__phabricator_version"
    ]
  }
}

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

Available Tools

Task Management (Maniphest)

| Tool | Description | |------|-------------| | phabricator_task_search | Search tasks with filters (status, assignee, project, etc.) | | phabricator_task_create | Create a new task | | phabricator_task_edit | Edit an existing task | | phabricator_task_add_comment | Add a comment to a task |

Code Reviews (Differential)

| Tool | Description | |------|-------------| | phabricator_revision_search | Search code review revisions | | phabricator_revision_edit | Edit a revision (add reviewers, comment, etc.) | | phabricator_get_raw_diff | Get the raw diff/patch content for a diff by ID | | phabricator_diff_search | Search diffs |

Repositories (Diffusion)

| Tool | Description | |------|-------------| | phabricator_repository_search | Search repositories | | phabricator_commit_search | Search commits |

Users

| Tool | Description | |------|-------------| | phabricator_user_whoami | Get current authenticated user | | phabricator_user_search | Search users |

Projects

| Tool | Description | |------|-------------| | phabricator_project_search | Search projects | | phabricator_project_edit | Edit a project | | phabricator_column_search | Search workboard columns |

Pastes

| Tool | Description | |------|-------------| | phabricator_paste_search | Search pastes | | phabricator_paste_create | Create a paste |

Wiki (Phriction)

| Tool | Description | |------|-------------| | phabricator_document_search | Search wiki documents | | phabricator_document_edit | Edit a wiki document |

Blogs (Phame)

| Tool | Description | |------|-------------| | phabricator_blog_search | Search Phame blogs | | phabricator_blog_post_search | Search blog posts | | phabricator_blog_post_create | Create a new blog post | | phabricator_blog_post_edit | Edit an existing blog post | | phabricator_blog_post_add_comment | Add a comment to a blog post |

Transactions

| Tool | Description | |------|-------------| | phabricator_transaction_search | Search transactions (comments, status changes, etc.) on any object |

PHID Utilities

| Tool | Description | |------|-------------| | phabricator_phid_lookup | Look up PHIDs by name (e.g., "T123", "@username") | | phabricator_phid_query | Get details about PHIDs |

Server

| Tool | Description | |------|-------------| | phabricator_version | Get the version of the running phabricator-mcp server |

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"
• "Show me the comments on D6789"

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