coding.sh: Open-Source CLI Exposes Where Your Coding Agents Waste Time and Money
AsianKidTV · reddit · 2026-11-12
A developer open-sourced coding.sh, a local-first observability CLI for Claude Code, Codex, and other coding agents. Across 57 workflow runs (666 subagents, $2,500 API-equivalent), broken prompt caches cost $106 extra (4%), with 41 cache breaks caused by agents idling at barriers until caches expired; 40 subagents failed outright. An A/B test of a popular "be concise" plugin showed replies 17% shorter but cost per run up 11%—the injected style guide costs more than shorter output saves. Mining 3,600 sessions surfaced an AGENTS.md typo that sent Codex hunting a nonexistent folder across 92 sessions. Free, local SQLite storage, MCP server included: npx coding.sh.
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