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  • License MIT

MCP server for AST-aware search and safe, atomic multi-file edits — built to cut token usage on large codebases without giving up correctness.

Package Exports

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    Readme

    parecode

    An MCP server that gives coding agents AST-aware search and safe, atomic multi-file edits — built to cut token usage on large codebases without giving up correctness.

    Status: pre-M0. The package name is reserved; the implementation is in active development.

    Requirements

    • Node.js 20 or newer (ESM, native test runner, stable fetch-free runtime).
    • ripgrep on PATH (rg on Linux/macOS, rg.exe on Windows). Install via your package manager:
      • macOS: brew install ripgrep
      • Debian/Ubuntu: apt install ripgrep
      • Windows: winget install BurntSushi.ripgrep.MSVC or choco install ripgrep
    • A supported MCP client (Claude Code is the reference target).

    Parecode does not bundle ripgrep — it shells out to the system binary so you stay on a single, audited version.

    Install

    npm install -g parecode

    Install footprint: under 30 MB including prebuilt node-tree-sitter grammars for {darwin-arm64, darwin-x64, linux-x64, win32-x64} × Node {20, 22}. If no prebuild matches your platform, install falls back to a source build (requires a C/C++ toolchain).

    Quick start

    Register the server with Claude Code:

    parecode init                 # user scope by default
parecode init --scope project # commit MCP config to the repo
parecode init --print         # print the command without running it

    Then in any session, the ParecodeSearch and ParecodeEdit tools become available.

    What it does

    • ParecodeSearch — ripgrep-backed search that can return AST signatures (names, parameters, return types, docstrings) instead of full file bodies, dramatically lowering token cost on large files.
    • ParecodeEdit — batched multi-file edits with whitespace-tolerant fuzzy matching, pre/post stat conflict detection, atomic same-directory rename writes, and per-language post-write syntax validation.
    • parecode stats — local JSONL session log with token-saved estimates. Zero network. Zero telemetry.

    Privacy

    Parecode performs no network calls at runtime. Session logs are written to your OS data directory (resolved via env-paths) with 0600 permissions on Unix. Prune with parecode prune <days> or wipe the data dir.

    License

    MIT