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APIs with no key reported

Explore APIs listed as requiring no private key. Access is source-reported for community entries; rate limits and usage terms still apply.

1,009APIs to explore

Showing 145–180 of 1,009 APIs

Community listing
Cryptocurrency

Zennet

x402 pay-per-use APIs: Polymarket signals, CEX/DEX spreads, contract risk scores, gas oracle

◇ Reported: No keyCheck pricing
Community listing
Cryptocurrency

ZMOK

Ethereum JSON RPC API and Web3 provider

◇ Reported: No keyCheck pricing
Community listing
Finance

Exchangerate.host

Free foreign exchange & crypto rates API

◇ Reported: No keyCheck pricing
Community listing
Finance

api-mint

Free utility APIs: timezone, forex rates, crypto prices, page metadata

◇ Reported: No keyCheck pricing
Community listing
Finance

Bank of Russia

Exchange rates and currency conversion

◇ Reported: No keyCheck pricing
Community listing
Finance

Currency-api

Free Currency Exchange Rates API with 150+ Currencies & No Rate Limits

◇ Reported: No keyCheck pricing
Community listing
Finance

Czech National Bank

A collection of exchange rates

◇ Reported: No keyCheck pricing
Community listing
Finance

Economia.Awesome

Portuguese free currency prices and conversion with no rate limits

◇ Reported: No keyCheck pricing
Community listing
Finance

Exchangerate.dev

Live & historical FX, 168 pairs back to 1999, Frankfurter-compatible, free 10k/mo

◇ Reported: No keyCheck pricing
Community listing
Finance

FreeForexAPI

Real-time foreign exchange rates for major currency pairs

◇ Reported: No keyCheck pricing
Community listing
Finance

FXpeek

Source-linked historical reference exchange rates with CSV, JSON and an MCP server

◇ Reported: No keyCheck pricing
Community listing
Finance

National Bank of Poland

A collection of currency exchange rates (data in XML and JSON)

◇ Reported: No keyCheck pricing
Community listing
Finance

paralelo.bo

Bolivia parallel-market USD/BOB exchange rate, aggregated from P2P sources every 60s

◇ Reported: No keyCheck pricing
Community listing
Finance

VATComply.com

Exchange rates, geolocation and VAT number validation

◇ Reported: No keyCheck pricing
Community listing
Data Validation

Postman Echo

Test api server to receive and return value from HTTP method

◇ Reported: No keyCheck pricing
Community listing
Data Validation

PurgoMalum

Content validator against profanity & obscenity

◇ Reported: No keyCheck pricing
Community listing
Development

24 Pull Requests

Project to promote open source collaboration during December

◇ Reported: No keyCheck pricing
Community listing
Development

Agify.io

Estimates the age from a first name

◇ Reported: No keyCheck pricing
Community listing
Development

API Grátis

Multiples services and public APIs

◇ Reported: No keyCheck pricing
Community listing
Development

ApicAgent

Extract device details from user-agent string

◇ Reported: No keyCheck pricing
Community listing
Development

APIs.guru

Wikipedia for Web APIs, OpenAPI/Swagger specs for public APIs

◇ Reported: No keyCheck pricing
Community listing
Development

APIzone

Independent uptime & status monitoring for 200+ popular APIs

◇ Reported: No keyCheck pricing
Community listing
Development

Aquanode

Live GPU rental prices and availability across nine cloud providers

◇ Reported: No keyCheck pricing
Community listing
Development

Beeceptor

Build a mock Rest API endpoint in seconds

◇ Reported: No keyCheck pricing
Community listing
Development

Bored

Find random activities to fight boredom

◇ Reported: No keyCheck pricing
Community listing
Development

BrewPage

Free hosting for HTML, JSON, key-value, files, multi-file sites with short URLs and TTL retention

◇ Reported: No keyCheck pricing
Community listing
Development

CDNJS

Library info on CDNJS

◇ Reported: No keyCheck pricing
Community listing
Development

Changelogs.md

Structured changelog metadata from open source projects

◇ Reported: No keyCheck pricing
Community listing
Development

Ciprand

Secure random string generator

◇ Reported: No keyCheck pricing
Community listing
Development

Cloudflare Trace

Get IP Address, Timestamp, User Agent, Country Code, IATA, HTTP Version, TLS/SSL Version & More

◇ Reported: No keyCheck pricing
Community listing
Development

CORS Proxy

Get around the dreaded CORS error by using this proxy as a middle man

◇ Reported: No keyCheck pricing
Community listing
Development

CountAPI

Free and simple counting service. You can use it to track page hits and specific events

◇ Reported: No keyCheck pricing
Community listing
Development

crates.io

Rust crate versions, downloads and dependency metadata

◇ Reported: No keyCheck pricing
Community listing
Development

DigitalOcean Status

Status of all DigitalOcean services

◇ Reported: No keyCheck pricing
Community listing
Development

DigMyName

Domain availability and registrar pricing across 52 TLDs

◇ Reported: No keyCheck pricing
Community listing
Development

DomainDb Info

Domain name search to find all domains containing particular words/phrases/etc

◇ Reported: No keyCheck pricing
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Know what’s been checked. Reviewed guides include provider documentation and examples. Community listings contain reported information that may have changed. Our methodology →