The Agent Skills Directory

[EXTERNAL_DOWNLOADS]: The skill documentation provides a command to download the call.mjs helper script from the author's domain at https://fittings.sh/skill/call.mjs to enable full functionality.
[CREDENTIALS_UNSAFE]: The tool utilizes the FITTINGS_PRIVATE_KEY environment variable to sign payment challenges. The script uses this key locally with the viem library to perform cryptographic signatures for the x402 payment protocol.
[COMMAND_EXECUTION]: The provided call.mjs script performs network communication with the vendor's API and utilizes dynamic imports for its dependencies, including Ethereum client libraries for transaction signing.
[REMOTE_CODE_EXECUTION]: The helper script implements a self-verification routine that fetches a remote hash from https://fittings.sh/skill/call.mjs.sha256 and compares it to its own local hash to ensure the payment logic is up to date before proceeding with transactions.

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