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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

Community listing

Email

MailCheck.ai

Prevent users to sign up with temporary email addresses

◇ Reported: No keyCheck pricing

Community listing

Entertainment

Bucketlist Dream of the Day

Daily travel and life-experience inspiration with canonical links and images

◇ Reported: No keyCheck pricing

Community listing

Entertainment

chucknorris.io

JSON API for hand curated Chuck Norris jokes

◇ Reported: No keyCheck pricing

Community listing

Entertainment

Corporate Buzz Words

REST API for Corporate Buzz Words

◇ Reported: No keyCheck pricing

Community listing

Entertainment

CosmyDay Astrology

Natal charts and sky events computed from Swiss Ephemeris

◇ Reported: No keyCheck pricing

Community listing

Entertainment

Excuser

Get random excuses for various situations

◇ Reported: No keyCheck pricing

Community listing

Entertainment

Fun Fact

A simple HTTPS api that can randomly select and return a fact from the FFA database

◇ Reported: No keyCheck pricing

Community listing

Entertainment

Imgflip

Gets an array of popular memes

◇ Reported: No keyCheck pricing

Community listing

Entertainment

JokeAPI

Programmable jokes in multiple languages with filtering options

◇ Reported: No keyCheck pricing

Community listing

Entertainment

justmeme.wtf

Free meme API with 2400+ templates, search, trending, and AI generation

◇ Reported: No keyCheck pricing

Community listing

Entertainment

Meme Maker

REST API for create your own meme

◇ Reported: No keyCheck pricing

Community listing

Entertainment

Memesio

Meme creation API with templates, editable captions and hosted share links

◇ Reported: No keyCheck pricing

Community listing

Entertainment

NaMoMemes

Memes on Narendra Modi

◇ Reported: No keyCheck pricing

Community listing

Entertainment

PotterDB

Harry Potter universe database with characters, spells, potions and more

◇ Reported: No keyCheck pricing

Community listing

Entertainment

Random Useless Facts

Get useless, but true facts

◇ Reported: No keyCheck pricing

Community listing

Entertainment

Techy

JSON and Plaintext API for tech-savvy sounding phrases

◇ Reported: No keyCheck pricing

Community listing

Entertainment

Yo Momma Jokes

REST API for Yo Momma Jokes

◇ Reported: No keyCheck pricing

Community listing

Environment

CO2 Offset

API calculates and validates the carbon footprint

◇ Reported: No keyCheck pricing

Community listing

Environment

Danish data service Energi

Open energy data from Energinet to society

◇ Reported: No keyCheck pricing

Community listing

Environment

GrünstromIndex

Green Power Index for Germany (Grünstromindex/GSI)

◇ Reported: No keyCheck pricing

Community listing

Environment

kanari

Real-time worldwide wildfire detections, water bomber tracking and open fire archive

◇ Reported: No keyCheck pricing

Community listing

Environment

Luchtmeetnet

Predicted and actual air quality components for The Netherlands (RIVM)

◇ Reported: No keyCheck pricing

Community listing

Environment

National Grid ESO

Open data from Great Britain’s Electricity System Operator

◇ Reported: No keyCheck pricing

Community listing

Environment

PM2.5 Open Data Portal

Open low-cost PM2.5 sensor data

◇ Reported: No keyCheck pricing

Community listing

Environment

Solematica

Compare Italian solar (photovoltaic) installer offers, energy prices (PUN/ARERA) and satellite roof data

◇ Reported: No keyCheck pricing

Community listing

Environment

UK Carbon Intensity

The Official Carbon Intensity API for Great Britain developed by National Grid

◇ Reported: No keyCheck pricing

Community listing

Environment

WattFigure

US electricity rates by state, with appliance and EV charging running costs

◇ Reported: No keyCheck pricing

Community listing

Environment

Website Carbon

API to estimate the carbon footprint of loading web pages

◇ Reported: No keyCheck pricing

Community listing

Finance

Banking Access Index

Which US business banking providers accept founders by country of residence, with sources

◇ Reported: No keyCheck pricing

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Finance

Binlist

Public access to a database of IIN/BIN information

◇ Reported: No keyCheck pricing

Community listing

Finance

Econdb

Global macroeconomic data

◇ Reported: No keyCheck pricing

Community listing

Finance

EstimateTax

US federal, state and local income tax calculation for 2026, with the source of every figure

◇ Reported: No keyCheck pricing

Community listing

Finance

Fed Treasury

U.S. Department of the Treasury Data

◇ Reported: No keyCheck pricing

Community listing

Finance

Futures Clock

Trading hours and session windows for 65 futures products on 16 global exchanges

◇ Reported: No keyCheck pricing

Community listing

Finance

Goldprice.dev

Cross-validated gold, silver & copper spot, futures & 30-year history in 13 currencies

◇ Reported: No keyCheck pricing

Community listing

Finance

Helious

US Treasury auction results with the tail and bidder split, plus scored economic releases

◇ 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 →