Testdog API – Free Public APIs

Github

Github : https://github.com/Ankur77720/testdog

What is Testdog?

Testdog is a free, open-source API server built for developers to practice real-world API consumption. It provides production-grade features like authentication, rate limiting, and analytics, ideal for learning and testing.

The Problem

Most public APIs are either outdated, unreliable, or hidden behind paywalls. Beginners often lack a stable environment to practice real authentication, handle tokens, or simulate backend workflows.

The Solution

Testdog offers:

  • Auth APIs (register, login and more)

  • Analytics and rate limiting

  • Daily database reset

  • Clear versioning (v1v2, etc.)

  • Upcoming mock data endpoints

  • Postman docs and starter code

Everything is built to simulate a realistic backend environment without any setup.

Reset and Data Persistence

The database resets every 24 hours to ensure consistent performance. All user data, tokens, and analytics are cleared during this reset.

Machine Size and Performance

Runs on a small VM with limited resources. Uses Redis for temporary storage and Winston for logs. Performance is optimized but intentionally rate-limited to mirror production constraints.

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