API & Backend

API testing, generation, and backend utilities

API and backend tools cover the server-side production essentials: JWT decoders that show you the exact claims (and don't leak the token to a remote service), JSON schema generators from sample payloads, OpenAPI/Swagger validators, GraphQL query formatters, REST client snippet generators in a dozen languages. Where an external service like Postman is overkill — for a quick "what does this token actually contain?" or "is this Stripe webhook payload valid?" — these tools are faster and don't require you to log in. They also play well with the CLI versions, which means a "format-this-curl-output" pipeline becomes one shell line.