These public APIs return structured data with no API key needed:
| API | Data | Use Case |
|---|---|---|
| Reddit JSON | Posts, comments | Sentiment analysis |
| Google News RSS | Latest articles | News monitoring |
| YouTube Innertube | Comments, captions | Video analysis |
| HN Firebase | Stories, comments | Tech trends |
| Bluesky AT Protocol | Posts, profiles | Social research |
| Wikipedia REST | Articles, summaries | Market overview |
| GitHub REST | Repos, stars | Tech landscape |
| Stack Overflow | Questions, answers | Developer interest |
| arXiv | Academic papers | Research trends |
| npm Registry | Package data | Ecosystem size |
All wrapped as free Apify tools: GitHub
Custom data extraction — $20: Payoneer
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