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  • License MIT

Pi Coding Agent extension that routes bash, read, grep, find, and ls through lean-ctx for 60-90% token savings

Package Exports

    This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (pi-lean-ctx) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

    Readme

    pi-lean-ctx

    Pi Coding Agent extension that routes all tool output through lean-ctx for 60–90% token savings.

    What it does

    Overrides Pi's built-in tools to route them through lean-ctx:

    Tool Compression
    bash All shell commands compressed via lean-ctx's 90+ patterns
    read Smart mode selection (full/map/signatures) based on file type and size
    grep Results grouped and compressed via ripgrep + lean-ctx
    find File listings compressed and .gitignore-aware
    ls Directory output compressed

    Install

    # 1. Install lean-ctx (if not already installed)
cargo install lean-ctx
# or: brew tap yvgude/lean-ctx && brew install lean-ctx

# 2. Install the Pi package
pi install pi-lean-ctx

    Binary Resolution

    The extension locates the lean-ctx binary in this order:

    1. LEAN_CTX_BIN environment variable
    2. ~/.cargo/bin/lean-ctx
    3. ~/.local/bin/lean-ctx (Linux) or %APPDATA%\Local\lean-ctx\lean-ctx.exe (Windows)
    4. /usr/local/bin/lean-ctx (macOS/Linux)
    5. lean-ctx on PATH

    Smart Read Modes

    The read tool automatically selects the optimal lean-ctx mode:

    File Type Size Mode
    .md, .json, .toml, .yaml, etc. Any full
    Code files (.rs, .ts, .py, etc.) < 24 KB full
    Code files 24–160 KB map (deps + API signatures)
    Code files > 160 KB signatures (AST extraction)
    Other files < 48 KB full
    Other files > 48 KB map

    Slash Command

    Use /lean-ctx in Pi to check which binary is being used.