hashloom is an open-source Python package that provides content-addressed contracts and a hash-keyed verification cache for spec-driven agent loops over the Model Context Protocol (MCP). It is designed for developers building autonomous agent systems requiring contract verification.
hashloom is an Autonomous agents & workflows product. It focuses on enabling reliable, spec-driven agent loops and contract verification for autonomous agent systems. hashloom is an open-source project aimed at developers building autonomous agents. The project is open source (Apache-2.0). It runs on the command line.
It is developed by davet47, and the product first shipped in 2026. The project is developed in the open on GitHub with 76 commits in the last 90 days. Across PulseGate's embedding index, hashloom has few near neighbours, marking it as relatively distinct. Among its 5 catalogued features are content-addressed contracts, verification cache, and spec-driven agents. It exposes integrations via an MCP server.
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