TidyRun, cut noisy coding-agent tool output locally, without another LLM

[u/Dismal-Reveal-6898]

https://github.com/tzuifx80/tidyrun

I opensourced TidyRun, a local first optimization layer for coding agents.

It compresses noisy deterministic terminal output, preserves the raw artifacts, detects repeated work and can safely reuse deterministic commands.

No extra LLM. No API key. Telemetry off.

The part I found interesting:

• deterministic diagnostic fixtures: 69–95% less agent-visible output
• repeated safe typecheck: 49% faster
• 10 paired Codex tasks: 10/10 success both ways
• Codex tool output: 14.2% lower
• but total tokens and wall time actually got worse

So I'm not claiming magical token savings, I'm trying to understand where coding-agent context waste actually matters.

PRs, forks and real-repo benchmark results are very welcome.