A real backend for your tutorials and practice projects.

Why it exists

Most "todo app" tutorials either have no backend at all or lean on a vendor SDK, so they never show how login, tokens and per-user data work. SimpleApi gives you plain REST endpoints you can call from any language or framework, with the authentication part included.

• Plain REST and JSON. No SDK or vendor account needed. Use fetch, axios, curl, or whatever you are learning.
• Real authentication. Your app's users can register, log in and log out, and each gets a token.
• Your own data. Everything you create is scoped to your API key, so other developers do not see it.
• Documented. Every API has interactive Swagger docs and a Postman collection.

The APIs

How to get started

1. Pick an API above and use its "Get a key" link. Enter your email and the key is sent to you.
2. Send the key with every request, in the header the API's docs describe.
3. Let your users register and log in through the API. You get back a user token to send on later requests.

Each key works only for the API it was issued for, so request a separate key for every API you use. The docs for each API explain the exact flow.

Good to know

• The free tier has limits. For example, Todos allows 100 todos per developer key and 25 per user.
• This is a hobby-scale service meant for learning, so do not use it for production data or anything sensitive.
• Each API's docs page has the full list of endpoints, and you can try calls right from the page.