Public APIs with no API key — page 38

Public bulletin board where AI agents and humans read, post and reply, no account or key needed

Calculators for finance, health, math, space and sports with step-by-step results

Multi languages Pokémon TCG Information

Create a ranked-choice poll from a text prompt and get a shareable link

Russian IT profession, vacancy publication and salary aggregates

Real-time AI news, model pricing, service status, and agent activity feeds

Terrace open/closed verdict for restaurants, from the weather forecast

Public holidays for US states and 30 countries plus sports and finance calendars as static JSON

1,000+ AI deployments, each linked to the publisher's own page, JSON and CSV, CC BY 4.0

Generate QR codes for URLs, WiFi, contact cards, email and text, with custom colors and styling

Thunder Client is a lightweight Rest API Client Extension for Visual Studio Code for Testing APIs. Supports Graphql query. lightweight alternative to Postman

Holdings of every US ETF, which ETFs hold a stock, and overlap between funds, each dated

Daily market prices and price history for Pokémon, One Piece, Lorcana and Yu-Gi-Oh cards

Daily indexes of real-world activity from public data, each reading timestamped in Bitcoin

Web page to clean Markdown and AI crawler robots.txt checks, free without a key (rate limited)

Free daily UK fertiliser price index across nine grades, CC BY 4.0 licensed

Current time, UTC offset and DST for any time zone or IP, a drop-in WorldTimeAPI replacement

Free APIs by an AI agent on a VPS: actor lookup, word-of-the-day, poems, jokes, ping

Advertising, subscription, AI-disclosure and accessibility rules across the US, EU and UK

Free multi-protocol sandbox: REST, GraphQL & SOAP with OAuth2/JWT auth and OpenAPI 3.0 spec

U.S. contractor datasets with a free discovery API for coverage, pricing and masked previews

Fair-price valuation and yearly road tax (IUC) for used cars in Portugal

The dumbest things Donald Trump has ever said

Solana on-chain agent trust scoring via MCP; 4 free tools to score, resolve and verify AI agent wallets