Free APIs with no API key

1,038 public APIs you can call without registering, getting a key or adding a credit card. Ideal for prototypes, tutorials, tests and hackathons.

By category

Top 20 keyless APIs

1
Bidledger API
Online · 279 ms
Every open public tender in the European Union, rebuilt daily from the official TED data.
- No API key needed
- Fast: 279 ms response
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
2
Dog Facts API
Online · 342 ms
Random dog facts. A free animals API by dukengn.github.io.
- No API key needed
- Fast: 342 ms response
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
3
Dog Facts API
Online · 356 ms
Random facts of Dogs. A free animals API by Dog API by kinduff.
- No API key needed
- Fast: 356 ms response
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
4
Econdb API
Online · 802 ms
Download economic and shipping data using Python.
- No API key needed
- Returns JSON at its URL
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
5
Icanhazip API
Online · 278 ms
The family of icanhaz sites help you get more information about your network connection.
- No API key needed
- Fast: 278 ms response
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
6
Index Agentica API
Online · 382 ms
Agent-first directory of skills, MCP servers, tools, protocols and APIs as JSON, markdown, llms.txt.
- No API key needed
- Fast: 382 ms response
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
7
ipwhois API
Online · 226 ms
IP geolocation with country, city, coordinates, ISP, timezone and flag data.
- No API key needed
- Fast: 226 ms response
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
8
Microlink.io API
Online · 378 ms
Extract structured data from any website.
- No API key needed
- Fast: 378 ms response
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
9
NASA POWER API
Online · 228 ms
Global solar and weather data for energy and agriculture.
- No API key needed
- Fast: 228 ms response
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
10
Open VSX API
Online · 270 ms
Search and access VS Code extensions from the Open VSX registry.
- No API key needed
- Fast: 270 ms response
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
11
OpenSanctions API
Online · 343 ms
Data on international sanctions, crime and politically exposed persons.
- No API key needed
- Fast: 343 ms response
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
12
PayCrunch API
Online · 278 ms
US wages for 1,008 occupations and by state, from BLS OEWS May 2025, static JSON, CC BY 4.0.
- No API key needed
- Fast: 278 ms response
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
13
Presend API
Online · 399 ms
Security and developer utility API -- malware, vulnerability, and domain checks, no signup.
- No API key needed
- Fast: 399 ms response
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
14
RubyGems API
Online · 360 ms
Ruby gem metadata, versions, dependencies and search.
- No API key needed
- Fast: 360 ms response
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
15
Statically API
Online · 324 ms
A free CDN for developers.
- No API key needed
- Fast: 324 ms response
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
16
BirkinBagStock API
Online · 1011 ms
Independent Hermès resale index: inventory, market prices, auction calendar and results.
- No API key needed
- Returns JSON at its URL
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
17
DefiLlama API
Online · 178 ms
Open and transparent DeFi data, TVL, coin prices, volumes, and yields.
- No API key needed
- Fast: 178 ms response
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
18D
DocStruct API
Online · 190 ms
AI extraction of invoices, receipts, bank statements & contracts into structured JSON/CSV.
- No API key needed
- Fast: 190 ms response
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
19
GBIF API
Online · 115 ms
Global Biodiversity Information Facility. A free science & math API by gbif.org.
- No API key needed
- Fast: 115 ms response
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
20
Helium API
Online · 377 ms
News with media bias scoring, balanced news synthesis, live market data, AI options pricing.
- No API key needed
- Fast: 377 ms response
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS

FAQ

Are there free public APIs without an API key?

Yes. 20 free public APIs need no API key or sign-up, including Bidledger API, Dog Facts API and Dog Facts API. You can send a request straight away.

Which keyless public APIs can I call from JavaScript in the browser?

20 of them also support CORS, including Bidledger API, Dog Facts API and Dog Facts API, so a plain fetch from a web page works.

Do APIs without a key have limits?

Usually, yes. Keyless APIs typically rate-limit by IP address, so cache responses and avoid tight loops. For production traffic, an API with a free key tier often gives higher, more predictable limits.