OSS
headroom is at 72,878 stars with 673 open issues and no tagged release since 2026-08-27
headroomlabs-ai/headroom (Apache-2.0, Python) compresses tool outputs, logs, files and RAG chunks before they reach the model, claiming 20% fewer tokens for coding agents and 60-95% for JSON, shipping as a library, a proxy and an MCP server. It was created 2026-01-07 and pushed yesterday, but v0.37.0 on 2026-08-27 is the last tag, three weeks back. The asymmetric claim is the interesting part for builders: the JSON number is plausible on structurally redundant payloads while the 20% coding-agent number is the one to verify against your own traces.
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