Crawling API / Stack ExchangeStack Exchange Scraper.
Stack Exchange Scraper.
Every site, fully rendered.
Send any Stack Exchange URL and get the fully rendered HTML back, through residential proxies with anti-bot handling built in.
Or pull structured JSON with the stackexchange-serp and stackexchange-thread scrapers.
Live crawl feed · Stack Exchange1.24M req/minStreaming
200askubuntu.com/questions/tagged/aptAU152ms
200dba.stackexchange.com/questions/tagged/postgresqlJP193ms
301serverfault.com/questions/tagged/nginxFR207ms
200dba.stackexchange.com/questions/tagged/postgresqlCA202ms
301unix.stackexchange.com/questions/tagged/bashES144ms
200askubuntu.com/questions/tagged/aptBR76ms
200security.stackexchange.com/questions/tagged/tlsES40ms
301stackoverflow.com/questions/2861071/how-to-modify-a-text-fileBR75ms
200askubuntu.com/questions/tagged/aptAU142ms
200math.stackexchange.com/questions/tagged/linear-algebraJP50ms
200dba.stackexchange.com/questions/tagged/postgresqlUS196ms
200serverfault.com/questionsIN136ms
200stackoverflow.com/search?q=async+awaitES208ms
200stackoverflow.com/questions/tagged/rustIN59ms
200stackoverflow.com/questions/2861071/how-to-modify-a-text-fileIN213ms
200superuser.com/questions/217504/how-do-i-record-my-screenGB66ms
200math.stackexchange.com/questions/tagged/linear-algebraES190ms
200superuser.com/questions/217504/how-do-i-record-my-screenDE42ms
200security.stackexchange.com/questions/tagged/tlsES79ms
200serverfault.com/questionsUS63ms
200stackoverflow.com/questions/tagged/rustJP166ms
200mathoverflow.net/questions/tagged/nt.number-theoryUS78ms
200stackoverflow.com/search?q=async+awaitIN139ms
200superuser.com/questions/tagged/windowsNL103ms
200stackoverflow.com/search?q=segmentation+faultES122ms
200math.stackexchange.com/questions/tagged/linear-algebraIN189ms
200askubuntu.com/questions/tagged/aptAU152ms
200dba.stackexchange.com/questions/tagged/postgresqlJP193ms
301serverfault.com/questions/tagged/nginxFR207ms
200dba.stackexchange.com/questions/tagged/postgresqlCA202ms
301unix.stackexchange.com/questions/tagged/bashES144ms
200askubuntu.com/questions/tagged/aptBR76ms
200security.stackexchange.com/questions/tagged/tlsES40ms
301stackoverflow.com/questions/2861071/how-to-modify-a-text-fileBR75ms
200askubuntu.com/questions/tagged/aptAU142ms
200math.stackexchange.com/questions/tagged/linear-algebraJP50ms
200dba.stackexchange.com/questions/tagged/postgresqlUS196ms
200serverfault.com/questionsIN136ms
200stackoverflow.com/search?q=async+awaitES208ms
200stackoverflow.com/questions/tagged/rustIN59ms
200stackoverflow.com/questions/2861071/how-to-modify-a-text-fileIN213ms
200superuser.com/questions/217504/how-do-i-record-my-screenGB66ms
200math.stackexchange.com/questions/tagged/linear-algebraES190ms
200superuser.com/questions/217504/how-do-i-record-my-screenDE42ms
200security.stackexchange.com/questions/tagged/tlsES79ms
200serverfault.com/questionsUS63ms
200stackoverflow.com/questions/tagged/rustJP166ms
200mathoverflow.net/questions/tagged/nt.number-theoryUS78ms
200stackoverflow.com/search?q=async+awaitIN139ms
200superuser.com/questions/tagged/windowsNL103ms
200stackoverflow.com/search?q=segmentation+faultES122ms
200math.stackexchange.com/questions/tagged/linear-algebraIN189ms
01 Live demo
One scraper, every Stack Exchange site.
The Crawling API, typed live. Watch the stackexchange-serp scraper return structured JSON from Super User, Ask Ubuntu and MathOverflow - the same call works on any site in the network. Hover to pause and read.
Run your first request in minutes. Up to 20,000 free requests, no credit card.Start free
02 Capabilities
One API, the whole Stack Exchange network.
The two scrapers are host-agnostic, so the same call works on Stack Overflow, Super User, Ask Ubuntu, MathOverflow and every *.stackexchange.com site. The Crawling API renders each page in a real browser, reaches it through residential IPs, and hands you clean HTML or JSON.
network
Every Stack Exchange site
stackoverflow.com, superuser.com, askubuntu.com, serverfault.com, mathoverflow.net and all *.stackexchange.com communities work through the same two scrapers.
proxies
140M residential IPs
Stack Exchange rate limits datacenter IPs, so every request rotates a residential IP across 30 geographies and reaches each site 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 the entire Stack Exchange network and everything else you crawl. See the live demo.
03 Output
Every thread field, as 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
Tags
question.tags · array question.askedAt · string answers[].createdAt · string
04 How it works
From URL to data in one call.
Every Stack Exchange request moves through the same path. You send a URL, we operate everything in between.
01
Send the URL
Pass any public Stack Exchange URL with your token: a question, a tag, a search or a listing on any site in the network.
02
Rotate a proxy
A residential IP and geography that reach each site cleanly, drawn from 140M IPs across 30 regions.
03
Render the page
A real browser loads the page so scores, answers and comments render before capture.
04
Clear anti-bot
Each site's bot checks and per-page rate limits are handled automatically. Nothing to solve, nothing to maintain.
05
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 Exchange data.
USE / 01Knowledge
Developer knowledge mining
Pull questions, accepted answers and comments across the network to build searchable 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 across sites to spot rising languages, tools and topics 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 across the network, plus any other site you need.
06 Notes
Good to know when scraping Stack Exchange.
One pair of scrapers, every site
stackexchange-serp and stackexchange-thread are host-agnostic, so the same two scrapers cover Stack Overflow, Super User, Ask Ubuntu, MathOverflow and all *.stackexchange.com communities.
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.
Residential proxies by design
Stack Exchange rate limits datacenter IPs, so requests route through the residential pool. Each one rotates a fresh IP, so access stays consistent.
Reach every site from anywhere
Geotargeting across 30 regions and 140M residential IPs means consistent access without managing proxies.
07 Why Crawlbase
Built to crawl Stack Exchange 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 a Stack Exchange site changes.
99%
Average request success rate
140M
Residential IPs, plus 98M datacenter
30
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 Exchange scraping questions.
Send any Stack Exchange 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.
Both scrapers are host-agnostic, so they work on stackoverflow.com, all *.stackexchange.com sites, superuser.com, askubuntu.com, serverfault.com and mathoverflow.net through the same API.
Crawlbase routes each request through rotating residential IPs across 30 geographies and clears bot checks automatically. Stack Exchange rate limits datacenter IPs, so the residential pool keeps access consistent, and there is nothing to maintain when a site changes its setup.
stackexchange-serp returns a list of questions from a tag, search or listing page, each with its title, score, answer count, view count, tags and excerpt, plus pagination. stackexchange-thread returns a single question page: the full question body with every answer and comment, including scores, accepted status, author reputation and timestamps.
Any public URL: questions and their answers, tag listings, user profiles, and search result pages on any site in the network. 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 Exchange.
Skip the proxies and rate limits.
Free to begin with up to 20,000 requests. One token for the Crawling API and every scraper.