Show HN: Pu.sh – a full coding-agent harness in 400 lines of shell

Category: cli-tool

Tags: shell, ai-agent, cli-tool

Score: 6.8/10 (Innovation: 7, Technical: 6, Documentation: 8, Utility: 6)

Pu.sh is a minimalist coding-agent harness implemented in a single 400-line shell script, providing an agentic loop with tool use, multi-turn chat, and support for OpenAI and Anthropic APIs. Its innovation lies in achieving a full agentic workflow with zero dependencies beyond common Unix tools, challenging the trend of bloated coding agents.

Target audience: backend devs, devops, data engineers

Repository: https://pu.dev/ · Shell · MIT

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