Show HN: Free Public API Lab

Category: devtools

Tags: mock-api, rest, graphql, websocket, testing

Score: 7.5/10 (Innovation: 7, Technical: 8, Documentation: 8, Utility: 7)

Sondahub-core is a self-contained mock API server providing three related data worlds (Store, Social, Helpdesk) with realistic validation, business rules, and persistent in-memory writes over REST, GraphQL, WebSocket, and SSE. It offers deterministic seed data, OpenAPI docs, extensive HTTP test endpoints, and a zero-dependency Node process, making it a versatile tool for API development and testing.

Target audience: backend devs, frontend devs, QA engineers, API developers

Repository: https://sondahub.com/ · TypeScript · MIT · 1 stars

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