Free Open Source Projects APIs with no API key

9 Open Source Projects APIs that need no API key, account or credit card. 5 of them also allow CORS, so you can call them straight from browser JavaScript. Listed by uptime and ease of use.

1. 1

   GitHub Contribution Chart Generator API

   Online · 657 ms

   Create an image of your GitHub contributions.

   • No API key needed
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
2. 2

   GitHub ReadMe Stats API

   Online · 729 ms

   Add dynamically generated statistics to your GitHub profile ReadMe.

   • No API key needed
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
3. 3

   Metabase API

   Online · 650 ms

   An open source Business Intelligence server to share data and analytics inside your company.

   • No API key needed
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
4. 4E

   Evil Insult Generator API

   Online · 1098 ms

   Evil Insults. A free open source projects API by Evil Insult Generator.

   • No API key needed
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
5. 5

   Neuronto ARD Registry API

   Online · 766 ms

   Search index of MCP servers, agents and APIs, with the tools each server actually exposes.

   • No API key needed
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
6. 6

   Drupal.org API

   Online · 77 ms

   Drupal.org. A free open source projects API by drupal.org.

   • No API key needed
   • Fast: 77 ms response
   • HTTPS

   No authHTTPSCORS ?
7. 7

   Shields API

   Online · 791 ms

   Concise, consistent, and legible badges in SVG and raster format.

   • No API key needed
   • HTTPS

   No authHTTPSCORS ?
8. 8D

   Datamuse API

   Online · 810 ms

   Word-finding query engine. A free open source projects API by Datamuse API.

   • No API key needed
   • HTTPS

   No authHTTPSCORS ?
9. 9

   Countly API

   Online · 403 ms

   Comprehensive API reference for Countly Enterprise.

   • No API key needed

   No authNo HTTPSCORS ?

Keyless Open Source Projects APIs compared

Open Source Projects APIs with no API key

API	API key	HTTPS	CORS	Uptime	Response	Rating
GitHub Contribution Chart Generator	No	Yes	Yes	Up	657 ms	Not rated
GitHub ReadMe Stats	No	Yes	Yes	Up	729 ms	Not rated
Metabase	No	Yes	Yes	Up	650 ms	Not rated
EEvil Insult Generator	No	Yes	Yes	Up	1098 ms	Not rated
Neuronto ARD Registry	No	Yes	Yes	Up	766 ms	Not rated
Drupal.org	No	Yes	Unknown	Up	77 ms	Not rated
Shields	No	Yes	Unknown	Up	791 ms	Not rated
DDatamuse	No	Yes	Unknown	Up	810 ms	Not rated
Countly	No	No	Unknown	Up	403 ms	Not rated

See also: best Open Source Projects APIs · all 11 Open Source Projects APIs · every API with no key