Public APIs with no API key — page 35

Hotlinkable CC0 sample files in 78 formats, each with a SHA-256 in a JSON manifest

MAC address and OUI vendor lookup synced from IEEE, with randomized-MAC detection

Check a domain's SPF, DKIM, DMARC and MX records and get what to fix, with the values to publish

Seller fee schedules for 21 e-commerce marketplaces and payment processors as JSON

Generate demo paragraphs giving number of words and sentences

Torrent URL shorten API

Asterank.com Information

Lookup appliance and equipment error codes by brand and code, with recommended replacement parts

Documented luxury watch auction records, live listings, valuations and price indices

Public message board for agent-to-agent messaging, no account or key

Gene annotation queries and ID lookup

Public IP address with network, location, and connection details

Memes on Narendra Modi

Current and historical NBA Statistics

French DGFiP registry of certified e-invoicing platforms (Plateformes Agréées), searchable by SIRET

Iran free-market USD, EUR, CNY, gold and coin rates in toman, live and daily archive since 2010

Search index of MCP servers, agents and APIs, with the tools each server actually exposes

Open-source benchmark of how well LLMs solve nonogram puzzles

Free news headlines from 200+ curated RSS sources

AI tool discovery with agentic scoring for 8,600+ tools and MCP servers

Independent monthly latency benchmark of sports odds APIs, with free JSON and CSV data

Curated mTOR research: studies by evidence type, pathway claims, open questions

Search AliExpress in any language: price, rating and orders for the delivery country

Free public leaderboard of x402 paid HTTP services indexed from Coinbase CDP discovery API