AI Open-Source Efficiency Guide

Mar 24, 2026 · Artificial Intelligence

Uncovering Claude’s 37 Hidden Tools: A Complete Reverse‑Engineered Guide

The article documents a week‑long, cross‑platform reverse‑engineering project that catalogs over 37 undocumented internal tools in Claude.ai, describing their schemas, behavior tests, edge cases, and platform‑specific availability, and reveals that Claude actually consists of three distinct toolsets with notable fragmentation.