# Concord MCP (MCP server)

> Concord MCP is an MCP server that adds developer tools to AI assistants such as Claude Desktop, Claude Code and Cursor. Cross-harness communication and shared work-state for AI coding agents. It has 412 GitHub stars, is released under the MIT license and runs locally with npx -y @concord-ai/concord-mcp.

Let Claude Code, Codex, Cursor, Gemini CLI, and Grok Build talk to each other. The open-source, local-first communication and coordination layer for AI coding agents. Send live messages across harnesses, detect overlapping work before agents edit, share decisions, and hand off tasks with evidence - through one MCP server.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/Get-Concord-AI/concord-mcp |
| GitHub stars | 412 |
| License | MIT |
| Language | TypeScript |
| Transport | stdio |
| Packages | npm: @concord-ai/concord-mcp |
| Remote URL | none |
| Needs API key | no |
| Official | no |
| Works with | Claude Desktop, Claude Code, Cursor, VS Code |
| Category | Developer tools |
| Latest release | v0.11.0 (Oct 6, 2026) |
| Last commit | Oct 6, 2026 |
| MCP registry name | io.github.Get-Concord-AI/concord-mcp |

## Install

### Claude Desktop (claude_desktop_config.json)

```json
{
  "mcpServers": {
    "concord-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@concord-ai/concord-mcp"
      ]
    }
  }
}
```

Settings > Developer > Edit Config. macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\. Restart Claude Desktop afterwards.

### Claude Code

```sh
claude mcp add --transport stdio concord-mcp -- npx -y @concord-ai/concord-mcp
```

### Cursor (.cursor/mcp.json)

```json
{
  "mcpServers": {
    "concord-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@concord-ai/concord-mcp"
      ]
    }
  }
}
```

Project file; use ~/.cursor/mcp.json to enable it in every project.

### VS Code (.vscode/mcp.json)

```json
{
  "servers": {
    "concord-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@concord-ai/concord-mcp"
      ]
    }
  }
}
```

Config formats checked against the official docs on 2026-10-07.

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