API / Config Tools

Lightweight REST client — collections, env vars, history, format converter (cURL / Collection JSON / REST Handler YAML)

Browse endpoints, schemas, and operations from an OpenAPI 3 spec

Convert an OpenAPI / Swagger spec into a Collection JSON v2.1 payload

Detect duplicate dependencies and common issues

Check Dockerfiles against common best practices

Validate required fields in Kubernetes YAML manifests

Generate stub responses from a JSON Schema

Compose an HTTP request with headers, auth and body — raw HTTP, curl and validation

Browse a GraphQL schema — types, fields, arguments, deprecations and reverse references

Parse a .proto file — services, messages, JSON mapping and wire-compatibility checks

Test REST APIs with method, URL, headers, and body simulation

Build and simulate SOAP XML requests

Build GraphQL queries and mutations with field selection

Test WebSocket connections and frame transmission

Build a webhook delivery with real Stripe, GitHub, Shopify, Slack or Svix HMAC signatures, the curl to replay it and the retry schedule

Generate API documentation from request details

Convert cURL commands to code in JavaScript, Python, Go with formatting options

Import and convert Postman collection JSON to various formats (cURL, REST, YAML)

Validate OpenAPI/Swagger specifications with detailed error reporting and compliance checking

Generate interactive Swagger UI from OpenAPI/Swagger specifications with documentation

Build and validate JSON schema interactively with property definitions and constraints

Generate OpenAPI schemas from JSON samples with automatic type inference and property detection

Generate mock API responses from JSON schema with status codes, delays, and realistic data

Simulate API rate limiting with token bucket, sliding window algorithms and quota management

Simulate API version management with endpoint mapping and deprecation scheduling

Track API endpoint deprecation timelines with migration guides and sunset notifications

Lint markdown files for style consistency, formatting issues, and best practices

Check markdown documents for spelling errors with smart dictionary and context awareness

Generate documentation from code comments and function signatures with formatted output

Extract routes, path/query params, body fields and status codes from pasted Express, NestJS, Flask, Spring, Gin or Rails code into OpenAPI or Markdown

Generate Swagger/OpenAPI documentation with paths, schemas, and authentication definitions