Crawling API / Stack Overflow

Stack Overflow Scraper.
Any page, fully rendered.

Send any Stack Overflow URL and get the fully rendered HTML back, through residential proxies with anti-bot handling built in.
Or turn it into structured JSON with the stackexchange-serp and stackexchange-thread scrapers.

Start free See it live

99% success rate140M residential IPs30 geographies

Live crawl feed · Stack Overflow1.24M req/minStreaming

200stackoverflow.com/questions/388242/the-definitive-c-book-guide-and-listSG88ms

200stackoverflow.com/questions/tagged/javascriptFR100ms

200stackoverflow.com/questions/2003505/how-do-i-delete-a-git-branchSG219ms

404stackoverflow.com/questionsNL100ms

200stackoverflow.com/questions/388242/the-definitive-c-book-guide-and-listAU201ms

200stackoverflow.com/questions/388242/the-definitive-c-book-guide-and-listES72ms

200stackoverflow.com/questions/tagged/javascriptJP42ms

200stackoverflow.com/questions/11227809/how-to-fix-thisNL146ms

404stackoverflow.com/users/22656/jon-skeetNL140ms

200stackoverflow.com/questions/tagged/pythonBR200ms

200stackoverflow.com/questions/231767/what-does-the-yield-keyword-doJP135ms

200stackoverflow.com/questions/tagged/rustAU121ms

200stackoverflow.com/questions/388242/the-definitive-c-book-guide-and-listGB164ms

200stackoverflow.com/questions/tagged/rustCA159ms

200stackoverflow.com/users/100297/martijn-pietersCA65ms

200stackoverflow.com/tagsJP123ms

200stackoverflow.com/search?q=async+awaitES148ms

200stackoverflow.com/questions/tagged/sqlDE190ms

200stackoverflow.com/questions/tagged/javascriptUS68ms

200stackoverflow.com/questions/tagged/javascriptAU142ms

200stackoverflow.com/search?q=segmentation+faultIN63ms

200stackoverflow.com/search?q=async+awaitDE96ms

200stackoverflow.com/questions/tagged/rustGB174ms

200stackoverflow.com/questionsFR130ms

200stackoverflow.com/users/100297/martijn-pietersUS205ms

200stackoverflow.com/questions/388242/the-definitive-c-book-guide-and-listIN86ms

200stackoverflow.com/questions/388242/the-definitive-c-book-guide-and-listSG88ms

200stackoverflow.com/questions/tagged/javascriptFR100ms

200stackoverflow.com/questions/2003505/how-do-i-delete-a-git-branchSG219ms

404stackoverflow.com/questionsNL100ms

200stackoverflow.com/questions/388242/the-definitive-c-book-guide-and-listAU201ms

200stackoverflow.com/questions/388242/the-definitive-c-book-guide-and-listES72ms

200stackoverflow.com/questions/tagged/javascriptJP42ms

200stackoverflow.com/questions/11227809/how-to-fix-thisNL146ms

404stackoverflow.com/users/22656/jon-skeetNL140ms

200stackoverflow.com/questions/tagged/pythonBR200ms

200stackoverflow.com/questions/231767/what-does-the-yield-keyword-doJP135ms

200stackoverflow.com/questions/tagged/rustAU121ms

200stackoverflow.com/questions/388242/the-definitive-c-book-guide-and-listGB164ms

200stackoverflow.com/questions/tagged/rustCA159ms

200stackoverflow.com/users/100297/martijn-pietersCA65ms

200stackoverflow.com/tagsJP123ms

200stackoverflow.com/search?q=async+awaitES148ms

200stackoverflow.com/questions/tagged/sqlDE190ms

200stackoverflow.com/questions/tagged/javascriptUS68ms

200stackoverflow.com/questions/tagged/javascriptAU142ms

200stackoverflow.com/search?q=segmentation+faultIN63ms

200stackoverflow.com/search?q=async+awaitDE96ms

200stackoverflow.com/questions/tagged/rustGB174ms

200stackoverflow.com/questionsFR130ms

200stackoverflow.com/users/100297/martijn-pietersUS205ms

200stackoverflow.com/questions/388242/the-definitive-c-book-guide-and-listIN86ms

01 Live demo

Two Stack Overflow scrapers, running live.

The Crawling API, typed live. Watch the stackexchange-serp and stackexchange-thread scrapers each return structured JSON. Hover to pause and read.

ready

keys 1-2 switch · click to pauserun your own URL

Run your first request in minutes. Up to 20,000 free requests, no credit card.Start free

02 Capabilities

One API, everything Stack Overflow throws at you.

Vote counts, answers and comments render dynamically, and questions, tags and user pages are rate limited. The Crawling API renders it in a real browser, reaches it through residential IPs, and hands you clean HTML or JSON.

render

Full JavaScript rendering

A real browser executes the page, so dynamically rendered vote counts, answers and comment threads are all captured, not just the initial HTML.

proxies

140M residential IPs

Every request rotates a residential IP across 30 geographies, so you reach Stack Overflow like a real local visitor.

anti-bot

Blocks handled for you

CAPTCHAs, bot walls and rate limits are cleared automatically. Nothing to solve, nothing to maintain.

format

HTML or JSON

Get the full rendered HTML, or add scraper=stackexchange-serp or stackexchange-thread to return question lists and full threads as structured JSON.

extras

Screenshots and async

The same call can capture a full-page screenshot, or run asynchronously with webhooks and cloud storage.

one token

One API for every site

The Crawling API works on any URL, so the same token covers Stack Overflow and everything else you crawl. See the live demo.

03 Output

Every thread field, clean JSON.

Send a question URL with scraper=stackexchange-thread and the thread comes back as typed JSON. Swap in stackexchange-serp to do the same for question lists, tags and search results.

{ "question": { "id": "2861071", "title": "How to modify a text file?", "score": 312, "viewCount": 486201, "tags": [ "python", "file" ], "askedAt": "2010-05-18T20:11:33Z", "author": { "name": "Nathan Fellman", "url": "https://stackoverflow.com/users/8460", "reputation": 127843 }, "comments": [ { "score": 3, "createdAt": "2010-05-18T20:19:04Z" } ] }, "answerCount": 2, "answers": [ { "id": "2861108", "score": 401, "isAccepted": true, "body": "Read the file into a list of lines, insert, then write it back.", "author": { "name": "Roberto Bonvallet", "url": "https://stackoverflow.com/users/193568", "reputation": 30215 }, "createdAt": "2010-05-18T20:15:52Z", "comments": [ { "score": 12, "createdAt": "2010-05-18T21:02:11Z" } ] } ] }

Question

question.id · string question.title · string question.score · number question.viewCount · number

Author

question.author.name · string question.author.url · string question.author.reputation · number

Answers

answerCount · number answers[].score · number answers[].isAccepted · boolean answers[].body · string

Comments

question.comments[] · array answers[].comments[].score · number answers[].comments[].createdAt · string

From URL to data in one call.

Every Stack Overflow request moves through the same path. You send a URL, we operate everything in between.

Send the URL

Pass any public Stack Overflow URL with your token: a question, a tag, a user page or a search.

Rotate a proxy

A residential IP and geography that reach Stack Overflow cleanly, drawn from 140M IPs across 30 regions.

Render the page

A real browser loads the page so vote counts, answers and comments render before capture.

Clear anti-bot

Stack Overflow's bot checks and per-page rate limits are handled automatically. Nothing to solve, nothing to maintain.

Return HTML or JSON

The fully rendered HTML comes back, or typed JSON when you add stackexchange-serp or stackexchange-thread.

05 Use cases

What teams build on Stack Overflow data.

USE / 01Knowledge

Developer knowledge mining

Pull questions, accepted answers and comments to build searchable developer knowledge bases.

USE / 02Training

Training data & RAG

Feed clean question-and-answer text into models, RAG pipelines and coding agents through one API.

USE / 03Trends

Tech-trend monitoring

Watch tags and search pages to spot rising languages, frameworks and tooling early.

USE / 04Q&A

Q&A datasets

Assemble structured question, answer and vote datasets for evaluation and benchmarks.

USE / 05Research

Competitive & dev research

Mine real developer questions, errors and workarounds to inform product and docs.

USE / 06Coverage

Any URL, one API

Crawl questions, tags, user pages and search, plus any other site you need.

06 Notes

Good to know when scraping Stack Overflow.

Rendered like a real browser

Vote counts, answers and comments are dynamically rendered; the Crawling API runs a real browser so they load before capture.

HTML by default, JSON on request

You get the full rendered HTML. Add scraper=stackexchange-serp or stackexchange-thread for parsed JSON, or parse the HTML yourself.

Rate limits handled for you

Stack Overflow rate limits questions, tags and user pages. Each request rotates a fresh residential IP, so access stays consistent.

Reach Stack Overflow from anywhere

Geotargeting across 30 regions and 140M residential IPs means consistent access without managing proxies.

07 Why Crawlbase

Built to crawl Stack Overflow at scale.

The Crawling API runs on the same network that serves 46,000+ paying customers and 70,000+ developers. No proxies to buy, no browsers to run, nothing to patch when Stack Overflow changes.

99%

Average request success rate

140M

Residential IPs, plus 98M datacenter

Geographies for accurate local results

20/s

Requests per second by default, more on request

One token, official SDKs for Python, Node and Ruby, and a 99.99% uptime network underneath.

08 FAQ

Stack Overflow scraping questions.

Send the Stack Overflow URL to the Crawlbase Crawling API with your token. Crawlbase rotates a residential proxy, renders the page in a real browser, clears bot checks, and returns the fully rendered HTML. Add a dedicated scraper (scraper=stackexchange-serp or stackexchange-thread) to get structured JSON instead.

Yes. By default the Crawling API returns rendered HTML; add a dedicated scraper (scraper=stackexchange-serp for question lists, tags and search, stackexchange-thread for a full question with its answers and comments) to receive structured JSON, or parse the HTML yourself.

Yes. A real browser executes the page, so dynamically rendered vote counts, answers and comments are captured, not just the initial HTML.

Crawlbase routes each request through rotating residential IPs across 30 geographies and clears bot checks automatically. You do not manage proxies or solve CAPTCHAs, and there is nothing to maintain when Stack Overflow changes its setup.

Yes. Question, tag, user and search pages all work the same way, even though Stack Overflow rate limits them. Each request rotates a fresh residential IP so access stays consistent.

Any public URL: questions and their answers, tag listings, user profiles, and search result pages. The same API works on any other site too.

Start free with up to 20,000 requests and no credit card. Paid plans scale with usage, and the same token works across the Crawling API and every Crawlbase scraper.

Start scraping Stack Overflow.
Skip the proxies and rate limits.

Free to begin with up to 20,000 requests. One token for the Crawling API and every scraper.

Start free Read the docs