software interface between computers and/or programs
screenshot of nasa api documentation
An application programming interface (API) is a connection between computers or between computer programs. It is a type of software interface, offering a service to other pieces of software. A document or … Wikipedia
Factsheet
Name Application Programming Interface
Factsheet
Name Application Programming Interface
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GitHub
github.com › public-apis › public-apis
GitHub - public-apis/public-apis: A collective list of free APIs · GitHub
A collective list of free APIs. Contribute to public-apis/public-apis development by creating an account on GitHub.
Starred by 409K users
Forked by 44.1K users
Languages   Python 96.8% | Shell 3.2%
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Free APIs
free-apis.github.io
Free APIs
An open-source collection of free APIs for web developers.
Discussions

Getting all GitHub users through github-api - Stack Overflow
The GitHub API documentation says that the url https://api.github.com/users will give all users in the order they signed up, but I only seem to get the first 135. Any ideas how to get the real f... More on stackoverflow.com
🌐 stackoverflow.com
How to Get Free API Access (Like GPT-4) Using GitHub Marketplace For Testing
Here’s a casual Reddit post you could make about getting free API access using GitHub Marketplace: More on reddit.com
🌐 r/PromptEngineering
1
2
June 30, 2025
Where can we find free APIs?
Checkout Github Models https://github.com/marketplace/models which provides free quota for developers.There are a lot of models including gpt4o. I think the quota is enough for daily use More on reddit.com
🌐 r/ChatGPTCoding
20
19
September 26, 2024
What are your favorite free public API(Free ones)?
Reddits API of course. Just add .json or .xml to a Reddit url. More on reddit.com
🌐 r/learnpython
56
223
April 22, 2019
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GitHub
github.com › Free-APIs › Free-APIs.github.io
GitHub - Free-APIs/Free-APIs.github.io: A collection of free APIs for new and experienced developers · GitHub
A collection of free APIs for new and experienced developers, derived from Public APIs.
Starred by 1.1K users
Forked by 115 users
Languages   JavaScript 98.0% | HTML 1.9% | CSS 0.1%
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GitHub
github.com › keploy › public-apis-collection
GitHub - keploy/public-apis-collection · GitHub
Free and open-source translation APITranslate text between major languages without any usage caps — no API key required. Self-hostable. ... Create dynamic badges for GitHub, APIs, or metricsGreat for displaying status, version, uptime, or custom metrics in projects and dashboards.
Starred by 27 users
Forked by 121 users
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GitHub
github.com › topics › api
api · GitHub Topics · GitHub
python api debugging cli http client devops json development terminal web rest curl rest-api http-client api-client developer-tools usability api-testing httpie ... Free ChatGPT&DeepSeek API Key,免费ChatGPT&DeepSeek API。免费接入DeepSeek API和GPT4 API,支持 gpt | deepseek | claude | gemini | grok 等排名靠前的常用大模型。
Find elsewhere
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GitHub
github.com › public-api-lists › public-api-lists
GitHub - public-api-lists/public-api-lists: 🚀 A hand-curated list of free, open, and developer-friendly APIs
🚀 A hand-curated list of free, open, and developer-friendly APIs - public-api-lists/public-api-lists
Starred by 13.4K users
Forked by 1.3K users
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GitHub
github.com › topics › free-ai-api
free-ai-api · GitHub Topics · GitHub
AI Fiesta.ai (Dhruv Rathee Startup) Unlimited Free Usage Bypass. openai-api free-ai-api grok-api chatgpt-5-pro dhruv-rathee ai-fiesta
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GitHub
docs.github.com › en › rest
GitHub REST API documentation - GitHub Docs
GitHub Docs · Version: Free, Pro, & Team · Search or ask Copilot · Search or askCopilot · Select language: current language is English · Search or ask Copilot · Search or askCopilot · Open menu · Open Sidebar · The REST API is now versioned. For more information, see "About API versioning."
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GitHub
github.com › cheahjs › free-llm-api-resources
GitHub - cheahjs/free-llm-api-resources: A list of free LLM inference resources accessible via API. · GitHub
A list of free LLM inference resources accessible via API. - cheahjs/free-llm-api-resources
Starred by 15.4K users
Forked by 1.5K users
Languages   Python
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GitHub
github.com › topics › public-api
public-api · GitHub Topics · GitHub
free face-swap photo-editing video-editing lip-sync public-api remover restyle video-generation deepfake face-animation diffusion-models remove-background voice-clone controlnet segment-anything txt2video wunjo img2video
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Reddit
reddit.com › r/promptengineering › how to get free api access (like gpt-4) using github marketplace for testing
r/PromptEngineering on Reddit: How to Get Free API Access (Like GPT-4) Using GitHub Marketplace For Testing
June 30, 2025 -

Here’s a casual Reddit post you could make about getting free API access using GitHub Marketplace:

Title: How to Get Free API Access (Like GPT-4) Using GitHub Marketplace

Hey everyone,

I just found out you can use some pretty powerful AI APIs (like GPT-4.1, o3, Llama, Mistral, etc.) totally free through GitHub Marketplace, and I wanted to share how it works for anyone who’s interested in experimenting or building stuff without spending money.

How to do it:

  1. Sign up for GitHub (if you don’t already have an account).

  2. Go to the GitHub Marketplace Models section (just search “GitHub Marketplace models” if you can’t find it).

  3. Browse the available models and pick the one you want to use.

  4. You’ll need to generate a GitHub Personal Access Token (PAT) to authenticate your API requests. Just go to your GitHub settings, make a new token, and use that in your API calls.

  5. Each model has its own usage limits (like 50 requests/day, or a certain number of tokens per request), but it’s more than enough for testing and small projects.

Why is this cool?

  • You can try out advanced AI models for free, no payment info needed.

  • Great for learning, prototyping, or just messing around.

  • No need to download huge models or set up fancy infrastructure.

Limitations:

  • There are daily/monthly usage caps, so it’s not for production apps or heavy use.

  • Some newer models might require joining a waitlist2.

  • The API experience isn’t exactly the same as paying for the official service, but it’s still really powerful for most dev/test use cases.

Hope this helps someone out! If you’ve tried it or have tips for cool projects to build with these free APIs, drop a reply!

🌐
GitHub
gist.github.com › win3zz › 0a1c70589fcbea64dba4588b93095855
GitHub-Leaked-API-Keys-and-Secrets.md · GitHub
FREE API KEYS sk-abcdef1234567890abcdef1234567890abcdef12 sk-1234567890abcdef1234567890abcdef12345678 sk-abcdefabcdefabcdefabcdefabcdefabcdef12 sk-7890abcdef7890abcdef7890abcdef7890abcd sk-1234abcd1234abcd1234abcd1234abcd1234abcd sk-abcd1234abcd1234abcd1234abcd1234abcd1234 sk-5678efgh5678efgh5678efgh5678efgh5678efgh sk-efgh5678efgh5678efgh5678efgh5678efgh5678 sk-ijkl1234ijkl1234ijkl1234ijkl1234ijkl1234 sk-mnop5678mnop5678mnop5678mnop5678mnop5678 sk-qrst1234qrst1234qrst1234qrst1234qrst1234 sk-uvwx5678uvwx5678uvwx5678uvwx5678uvwx5678 sk-1234ijkl1234ijkl1234ijkl1234ijkl1234ijkl sk-5678mnop5678mno
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GitHub
github.com › markodenic › public-apis
GitHub - markodenic/public-apis: A list of free APIs.
A list of free APIs. Contribute to markodenic/public-apis development by creating an account on GitHub.
Starred by 197 users
Forked by 28 users
Languages   HTML 100.0% | HTML 100.0%
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GitHub
docs.github.com › en › rest › users
REST API endpoints for users - GitHub Docs
GitHub Docs · Version: Free, Pro, & Team · Search or ask Copilot · Search or askCopilot · Select language: current language is English · Search or ask Copilot · Search or askCopilot · Open menu · Open Sidebar · The REST API is now versioned. For more information, see "About API versioning."
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GitHub
github.com › whizkydee › Awesome-APIs
GitHub - whizkydee/Awesome-APIs: 📚 A curated list of APIs from round the web.
Flurry - Yahoo’s Flurry provides you with a number of APIs enabling you to export your data. Parse - Download recent data to run your own custom analytics. Chartie - Free web API that mines the relevant trend patterns from your signal.
Starred by 654 users
Forked by 49 users
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NASA
api.nasa.gov
NASA Open APIs
Generate API Key · Loading signup form · Please enable JavaScript to signup for an api.data.gov API key
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JSONPlaceholder
jsonplaceholder.typicode.com
JSONPlaceholder - Free Fake REST API
JSONPlaceholder is supported by ... Congrats! You've made your first call to JSONPlaceholder. 😃 🎉 · JSONPlaceholder is a free online REST API that you can use whenever you need some fake data....
🌐
GitHub
docs.github.com › github-models › prototyping-with-ai-models
Prototyping with AI models
If you want to develop a generative AI application, you can use GitHub Models to find and experiment with AI models for free. Once you are ready to bring your application to production, opt in to paid usage for your enterprise. Organization owners can integrate their preferred custom models into GitHub Models, by using an organization's own LLM API keys.