A Model Context Protocol server for AST-aware code editing

• Rust
  • Must have rustfmt available on the PATH
  • Currently assumes edition 2024 for formatting, eventually this will be determined from context
• Python
  • Must have ruff available on the PATH
• JavaScript/TypeScript/JSON/JSX/TSX
  • Must have biome available on the PATH
• TOML
  • No external dependencies, taplo formatting included
• Plaintext / markdown / default editor
  • No external dependencies

  preview-edit           Stage an operation and see a preview of the changes
  retarget-edit          Change the targeting of an already-staged operation without rewriting the content
  persist-edit           Execute the currently staged operation
  set-working-directory  Set the working context path for a session

$ cargo install semantic-edit-mcp

Add this to your MCP configuration JSON file:

{
  "mcpServers": {
    "edit": {
      "command": "/path/to/semantic-edit-mcp/semantic-edit-mcp",
      "args": ["serve"]
    }
  }
}