OSS
Pi: The Sub-1,000-Token Minimal Harness Powering OpenClaw, Now at earendil-works/pi
Pi, the minimal terminal coding agent by Armin Ronacher (Flask/Jinja2) and Mario Zechner, is the SDK harness embedded inside OpenClaw — the fastest-growing AI agent (~375K stars). Pi's bet is radical minimalism: a system prompt under 1,000 tokens and just four core tools (read/write/edit/bash) versus 7,000–10,000-token prompts in Claude Code, Cline, and OpenCode, with an extension system that lets the agent write its own capabilities. The repo moved to earendil-works/pi (MIT) after Zechner joined Ronacher's PBC Earendil; for builders it's the clearest case study in self-modifying, token-frugal harness design.
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