Offering an MCP tool from APIs.io: get_provider_operations. Give it a provider and it lists every operation across all of that provider's OpenAPIs: method, path, operationId, summary, which API it belongs to, and whether it is deprecated. For Stripe it returned 518 operations across 71 APIs when this ad was written, each tagged with whether calling it reads data or changes something.
Condition: live, read-only. Coverage is only as complete as the contracts the catalog holds for that provider.
How you get it: add the remote MCP server https://apis.io/mcp to Claude, Cursor, VS Code or any MCP client. No key, no sign-up and no card for this tool; the free tier works anonymously. Setup notes: https://apis.io/developer/mcp-server