Expose curated Justfile recipes via MCP for safe deterministic automation.
Connect Just to Claude, Cursor or any other MCP client and it stops being a tab you switch to. Expose curated Justfile recipes via MCP for safe deterministic automation. The just mcp server is what makes that connection.
A production-ready MCP server that provides seamless integration with Just command runner, enabling AI assistants to discover, execute, and introspect Justfile recipes through the standardized MCP protocol.
just-mcp on npm is all you need. Most clients run it directly, so configuration is a few lines and a restart.
The toolset is worth reading before you wire it up, because it tells you what the integration is really for:
Installation — The Installation tool exposed by this serverValidation — The Validation tool exposed by this serverAmong the developer tooling options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. Just's toolset — Installation, Validation — is a fair guide to whether it matches your workflow. It is maintained by PromptExecution; worth a glance at recent repository activity before you build anything load-bearing on it.
SyncDev reviews every entry in this directory against the project's own documentation before publishing, and revisits them as servers change.
| Tool | What it does |
|---|---|
| Installation | The Installation tool exposed by this server. |
| Validation | The Validation tool exposed by this server. |
#### Using pip/uvx
```json
{
"mcpServers": {
"just-mcp": {
"command": "uvx",
"args": ["just-mcp", "--stdio"]
}
}
}Configuration as documented by the project. Restart the client after saving.
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