The Agent Skills Directory

[EXTERNAL_DOWNLOADS]: The skill instructions guide the user to download a helper script (call.mjs) from the vendor's official domain (fittings.sh) to facilitate interaction with the evaluation service.
[COMMAND_EXECUTION]: The skill requires running the downloaded Node.js script to perform calls to the evaluator API. The script includes logic to read its own file content and compare its hash against a remote value (https://fittings.sh/skill/call.mjs.sha256) to ensure it is up to date and has not been tampered with.
[REMOTE_CODE_EXECUTION]: The skill's primary execution flow involving curl -sO followed by node call.mjs is a remote code execution pattern. This is an intended and documented part of the vendor's payment client implementation for the x402 protocol.

calc-evaluate