One Request = One Signal
Use the Request API to turn a product URL into clean HTML or markdown. No browser runtime, no Playwright harness.
Use Case Price alerts that
Price alerts that
don’t get blocked
Build hobby projects that survive real anti-bot systems. Start with the Request API (URL → markdown), then add proxies and batching when your watch list grows, without worrying about anti-bot walls.
Stealth By Default
Realistic TLS + browser fingerprints help you avoid the “403 after 3 requests” problem common in hobbyist scripts.
Residential + Mobile Egress
Retailers and marketplaces behave differently per geo and network. Choose proxy type and location when you need it.
CAPTCHA Avoidance
Stop wiring third-party solvers into your scripts. Our stealth architecture prevents CAPTCHAs from appearing in the first place.
Batch When You Scale
When your “watch list” becomes a catalog, use batch endpoints for higher throughput and fewer round-trips.
Indie-Friendly Economics
Per-minute pricing and a free tier make it practical for side projects and hobby monitoring without surprises.
Extract a price signal
Fetch a product page as markdown and parse a price. For multiple URLs, switch to batch endpoints and run this in a scheduler.
price.ts
const authorization = ['Bearer', process.env.BROWSERCITY_API_KEY].join(' ');const page = await fetch('https://api.browser.city/v1/requests', { method: 'POST', headers: { Authorization: authorization, 'Content-Type': 'application/json' }, body: JSON.stringify({ url: 'https://example.com/product', markdown: true }),}).then((r) => r.json());const price = String(page.content ?? '').match(/\$([0-9,.]+)/)?.[1];if (!price) throw new Error('price not found');console.log({ price });import os, requests, repage = requests.post( 'https://api.browser.city/v1/requests', headers={'Authorization': f"Bearer {os.environ['BROWSERCITY_API_KEY']}"}, json={'url': 'https://example.com/product', 'markdown': True},).json()import rematch = re.search(r'\$([0-9,.]+)', page.get('content') or '')if not match: raise RuntimeError('price not found')print({'price': match.group(1)})using System.Net.Http.Headers;using System.Net.Http.Json;var http = new HttpClient();http.DefaultRequestHeaders.Authorization = new( "Bearer", Environment.GetEnvironmentVariable("BROWSERCITY_API_KEY"));var page = await (await http.PostAsJsonAsync( "https://api.browser.city/v1/requests", new { url = "https://example.com/product", markdown = true })) .Content.ReadFromJsonAsync<Response>();var match = System.Text.RegularExpressions.Regex.Match(page?.Content ?? "", @"\$([0-9,.]+)");if (!match.Success) throw new Exception("price not found");Console.WriteLine(match.Groups[1].Value);record Response(string? Content);import com.fasterxml.jackson.databind.ObjectMapper;import java.net.URI;import java.net.http.*;public class PriceTracking { public static void main(String[] args) throws Exception { var req = HttpRequest.newBuilder(URI.create("https://api.browser.city/v1/requests")) .header("Authorization", "Bearer %s".formatted(System.getenv("BROWSERCITY_API_KEY"))) .header("Content-Type", "application/json") .POST(HttpRequest.BodyPublishers.ofString("{\"url\":\"https://example.com/product\",\"markdown\":true}")) .build(); var page = new ObjectMapper().readValue( HttpClient.newHttpClient().send(req, HttpResponse.BodyHandlers.ofString()).body(), Response.class); var match = java.util.regex.Pattern.compile("\$([0-9,.]+)").matcher(page.content() == null ? "" : page.content()); if (!match.find()) throw new RuntimeException("price not found"); System.out.println(match.group(1)); } record Response(String content) {}}Common hobby workflows
Restock alerts
Price drops
Limited releases
Job listings
Rental listings
Flight fares
Marketplace monitoring
Personal dashboards
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