● WEB CAPTURE API · screenshots · extraction · monitoring

Screenshot any URL.
Extract data. Monitor changes.

The developer API for screenshot capture, structured extraction, and change monitoring. One HTTP call gets you PNG/JPEG/PDF screenshots, title-to-markdown extraction, or scheduled watches with webhook alerts.

Try it free ↓ 💻 GitHub

webcap in action — screenshots, data, monitoring

# Capture any URL as PNG, JPEG, or PDF
curl -X POST "https://webcap.shoutsid.fyi/v1/x402/capture" \
  -H 'content-type: application/json' \
  -d '{"url":"https://example.com/"}'
→ 200 {"artifact":{"format":"png","bytes":48291}}

# Extract structured data — title, headings, links, markdown
curl -X POST "https://webcap.shoutsid.fyi/v1/x402/extract" \
  -H 'content-type: application/json' \
  -d '{"urls":["https://example.com/"]}'
→ 200 {"results":[{"url":"https://example.com/",
      "title":"Example Domain","markdown":"# Example Domain\n..."}]}

# Free preview — no payment needed
curl "https://webcap.shoutsid.fyi/v1/extract/preview?url=https://example.com/"
→ 200 {"title":"Example Domain","wordCount":123}
How to pay: x402 micropayments (USDC on Base, gasless). Free preview: https://webcap.shoutsid.fyi/v1/extract/preview?url=...

-- Captures

-- Extracts

No API keys Required

No accounts Needed

Pay per call Card or crypto

Independently observed trust: the third-party kkj x402 Trust Index observes this service with live probes and signed evidence (observed, not a guarantee). Its records are keyed to the resource URL and derived from the CDP Bazaar, so this domain gets its own record once a paid call settles here.

Try it free

Extract any URL instantly

Paste a URL and see what webcap extracts — title, headings, links, markdown. Free: GET /v1/extract/preview. Full data: $0.01.

What you get

Everything you need to capture the web

One API. Three capabilities. Pay only for what you use.

📷

Capture

Screenshot any URL as PNG, JPEG, or PDF. Includes free OG metadata via GET /v1/og.

$0.001/URL

📊

Extract

Structured JSON: title, headings, links, paragraphs, markdown. Batch up to 50 URLs.

$0.01/batch

🔔

Monitor

Scheduled re-captures with webhook alerts. Detect any change, get notified.

from $0.10/100 runs

How it works

3 steps. No sign-up.

Call the API.
POST /v1/x402/capture or /v1/x402/extract. The server answers with a payment challenge.
Pay.
Pay with crypto (x402 USDC on Base) — instant, gasless, no accounts. Copy the command, paste in terminal, sign once. Payment guide.
Get your result.
Instant response. Artifact served immediately. On-chain settlement for crypto payments.

CDP Bazaar listing ↗ Buy credits → /openapi.json → quickstart guide → OG debugger → vs alternatives →