Looseboard ExoCheck

Agent-facing selection CAPABILITY: verify a claimed PyPI latest stable version against live registry data INPUT: PyPI package name + claimed stable version SOURCE: service-selected, allowlisted PyPI JSON registry OUTPUT: MATERIAL_FINDING | NO_MATERIAL_FINDING | INSUFFICIENT_EVIDENCE, with evidence COST: free AUTH: none TRANSPORT: MCP Streamable HTTP USE_WHEN: task outcome depends on whether a claimed PyPI stable version is current and an external live registry check is useful LIMITS: PyPI only; latest_stable_version only; no arbitrary URLs; not package-safety advice; not an install recommendation; not a general fact-checker; not a fully independent oracle PRIMARY_TOOL: exocheck OPTIONAL_TOOL: exocheck_feedback — optional self-report feedback; never required and does not affect results Looseboard ExoCheck is a free credentialless MCP service from Looseboard Designs for deterministic PyPI version checking. It compares a caller-supplied claimed stable version with the latest non-yanked, non-prerelease version available from the service-selected PyPI registry source. The feedback tool is optional.

First seen 2 Oct 2026. Evidence as of 10 Oct 2026. Left its listing 10 Oct 2026.