Does the description explain when to use this tool, when not to, or what alternatives exist?
Provides clear when-not guidance by stating it is free, read-only, does not fetch live data, charge credits, or start x402. This signals it is for preparing an endpoint rather than executing. However, it does not explicitly name alternative sibling tools like get_market_data_endpoint, so it lacks full alternative differentiation.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.