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Алексей Спинов
Алексей Спинов

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Stack Overflow API Is Free and Amazing — Here Is What You Can Build

#stackoverflow #api #javascript #developers

Stack Overflow has a public API (Stack Exchange API v2.3) that's free, no key needed, and returns structured JSON.

Quick Start 

https://api.stackexchange.com/2.3/search/advanced?q=parse+json+python&site=stackoverflow&filter=!nNPvSNdWme
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Returns questions with full body text, answers, scores, tags, and author reputation.

What You Can Get

  • Questions with full markdown body
  • All answers with code snippets
  • Scores, view counts, accepted answer flags
  • Tags and author reputation
  • Search by keyword or filter by tag

Use Cases

  1. Build a coding assistant — train on Q&A pairs
  2. Tech trend analysis — which tags are growing?
  3. Developer tool research — what problems need solving?
  4. Content generation — FAQ pages from real questions
  5. Interview prep — top-voted questions by topic

Rate Limits

  • 300 requests/day without API key
  • 10,000 requests/day with free API key
  • Backoff header tells you when to slow down

I built a Stack Overflow Scraper that wraps this API with pagination and answer extraction — free on Apify Store (search knotless_cadence stackoverflow).

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