Abacus
Development
Free and simple counting service. You can use it to track page hits and specific events
No keyCORSHTTPS
Free public APIs that actually work
Search 2,700+ tested public APIs and mock data feeds for fast prototyping. Instant filters for no-auth endpoints, browser-ready CORS support, and active HTTPS. Health-checked every 24 hours to weed out dead links and broken endpoints.
- APIs indexed
- 2,712
- No key needed
- 1,051
- CORS enabled
- 717
- Categories
- 56
Start here
Filter by development environment and authentication limits.
APIs with no key required
1,051 APIsCall endpoints straight away with cURL or frontend scripts. No signup forms, dashboard tokens, or config credentials required.
Works directly in the browser
310 APIsCORS-friendly endpoints with permissive origin headers. Query them directly from React, Vue, or static vanilla HTML files without a backend proxy.
Best for learning & portfolio projects
798 APIsPredictable schemas and clean JSON payloads. Recommended for tutorials, coding bootcamps, and frontend portfolio projects.
Free developer utilities & mock data
144 APIsFake REST payloads, dummy user databases, placeholder images, and status monitors. Zero-cost tooling for scaffolding an MVP.
Fastest responding endpoints
54 APIsMeasured lowest average latency across our own checks. Filtered for high availability and minimal rate-limiting friction.
Browse by category
56 categories, from AI and weather to open government data.
Good places to start
Verified, no key required, and simple enough to get a response first try.
Aero Key, India
Transportation
Indian Domestic Airport Data
No keyCORSHTTPS
Agentic Engineering Jobs
Jobs
Job board for engineers building agentic systems (LangChain, LlamaIndex, CrewAI)
No keyCORSHTTPS
AI Dev Jobs
Jobs
AI/ML engineering job aggregator with REST, RSS, and MCP endpoints
No keyCORSHTTPS
AI Dev Jobs
Jobs
AI and ML job listings from 289+ companies
No keyCORSHTTPS
AI Economics Tools
AI
Token cost, LLM energy, agent-hour and Proof-Adjusted Autonomy calculators by Michał Piszczek
No keyCORSHTTPS
AI Model Watch
AI
Daily-updated prices, context windows & deprecation/EOL dates for 190+ AI/LLM models, sourced from official provider docs
No keyCORSHTTPS
Airtel IP
Geocoding
IP Geolocation API. Collecting data from multiple sources
No keyCORSHTTPS