10 Secret APIs That Need No Authentication — Free Data Right Now

Here are 10 APIs you can call right now — no signup, no API key, no payment. 1. Reddit JSON API Append .json to any URL → structured posts, comments, scores. Tool 2. YouTube Innertube API Comments, search, captions — YouTube's internal API. No quotas. Tool 3. Google News RSS Real-time news for any query via RSS feed. Tool 4. Hacker News Firebase + Algolia Stories, comments, search — two complementary APIs. Tool 5. Bluesky AT Protocol Full social media API — profiles, posts, followers. Tool 6. Wikipedia REST API Clean JSON summaries, search, media for any topic. 7. Stack Overflow API Questions, answers, tags, votes — 300 req/day free. Tool 8. arXiv API 2.5M research papers, searchable by keyword. 9. npm Registry API Package search, download stats, dependency trees. Tool 10. DuckDuckGo Instant Answer Quick factual answers — api.duckduckgo.com/?q=query&format=json All wrapped as free tools on Apify Store | 77 tools on GitHub Custom data extraction — $20: Order via Payoneer