Backlog MCP Server for Claude

Overview

The Backlog MCP Server is the official Model Context Protocol server from Nulab for Backlog, the project management and collaboration platform popular in Japan and across Asia. It provides tools for managing projects, issues, wikis, Git repositories, pull requests, notifications, and documents. Both stdio (local npx) and HTTP transports are supported. Licensed under MIT.

Key capabilities

• Issues — create, read, update, and delete issues; add comments.
• Projects — manage projects and issue types.
• Wikis — create and read wiki pages.
• Git — repository management, pull requests, PR comments.
• Notifications — list, mark read/unread, check unread counts.
• Documents — navigate document trees and listings.
• Space info — retrieve space settings, user list, and authenticated user info.

How it compares

Backlog is the only project management MCP that integrates issue tracking, wiki documentation, and Git pull request review in a single server.

Installation

Claude Code

claude mcp add backlog \
  -e BACKLOG_DOMAIN=yourspace.backlog.com \
  -e BACKLOG_API_KEY=<your-api-key> \
  -- npx backlog-mcp-server

Generate your API key at: Personal Settings → API → Generate API Key in your Backlog account.

Claude Desktop

{
  "mcpServers": {
    "backlog": {
      "command": "npx",
      "args": ["backlog-mcp-server"],
      "env": {
        "BACKLOG_DOMAIN": "yourspace.backlog.com",
        "BACKLOG_API_KEY": "<your-api-key>"
      }
    }
  }
}

Configuration options

Requirements

• A Backlog account (backlog.com, backlog.jp, or self-hosted).
• Node.js (for npx).
• An MCP client (Claude Code or Claude Desktop).

Security

• BACKLOG_API_KEY grants full account access — keep it in the MCP config env.
• Use ENABLE_TOOLSETS to restrict to read-only toolsets in team deployments.

Source Verification Notes

Verified on 2026-06-18:

• Official repository nulab/backlog-mcp-server (MIT) documents npx backlog-mcp-server, BACKLOG_DOMAIN/BACKLOG_API_KEY configuration, all tool categories (Project, Issue, Wiki, Git, Notifications, Document, Space), OAuth 2.0 support, response token limits, toolset filtering, and HTTP transport mode.
• Claude Code MCP documentation at code.claude.com/docs/en/mcp describes the stdio connector pattern used above.