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agentic-coding-harness (Python wrapper)

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Run, watch, and meter coding agents from the command line. This Python package wraps the compiled ach CLI (vendored inside the wheel) and launches it with whatever JavaScript runtime you have installed — Bun if available, otherwise Node.js >= 22. No Python runtime dependencies; stdlib only.

# run without installing (the alias name matters for uvx)
uvx agentic-coding-harness --help

# or install
uv tool install agentic-coding-harness
ach --help

Requirements

  • Python 3.9+
  • Bun or Node.js >= 22 on your PATH (or in the usual install dirs), or set AGENTIC_CODING_HARNESS_RUNTIME=/path/to/runtime to force one.

What it does

The console scripts ach and agentic-coding-harness both locate a JS runtime, then exec the vendored ach.mjs bundle with full argument, stdio, signal, and exit-code passthrough. If no runtime is found they print install instructions and exit 127.

See the project README for the full ach CLI documentation.

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