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Webcap Web Capture API — Screenshot, Extract & Monitor
x402
Webcap Web Capture API — Screenshot, Extract & Monitor is a paid API for AI agents from webcap.shoutsid.fyi, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-12).
Captures a screenshot of any URL as PNG, JPEG, or PDF, with options for full-page capture, mobile viewport, post-load actions, and structured content extraction.
Price / call$0.001
Success—
StatusUnknown
How this service works
Screenshot any URL. Extract structured data. Monitor for changes. Developer API with pay-per-call pricing — no API keys, no accounts.
Output
Returns a JSON object containing: a base64-encoded image or PDF artifact (`artifact.data`), the artifact's public URL (`artifact.url`), its size in bytes (`artifact.bytes`), and the output format (`artifact.format`). Also includes payment metadata (payer address, price in USDC units). For extraction requests, structured page content is included in the artifact.
Example use cases
Visual regression check for deployed site
“Grab a full-page PNG screenshot of https://staging.myapp.com at 1440 wide by 900 tall so I can compare it visually to our production site before we ship.”
Capture paywalled page via stealth proxy
“Screenshot https://some-news-site.com/article using the stealth proxy option and give me a full-page JPEG so I can see the whole article layout.”
Extract article text for summarization
“Pull the main text content from https://techcrunch.com/2024/05/01/some-article/ — limit it to about 2000 words — so I can summarize it without loading the whole page.”
Technical details
Endpoint
POSThttps://webcap.shoutsid.fyi/v1/capture/jobs?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to programmatically capture a visual or textual snapshot of any public URL without managing API keys or accounts. It is especially well-suited for agents that need pay-per-call simplicity (x402/USDC micropayments), support for post-load browser interactions (click, type, wait), mobile/desktop viewport rendering, stealth proxy access, and structured content extraction in a single API call. Prefer it over headless browser infrastructure you'd have to self-host, or over screenshot SaaS products requiring OAuth and subscriptions.
Side effects
- Target URL is unreachable or returns an error — capture fails with a network or HTTP error
- CSS selector wait timeout exceeded (capped at 10s) — partial or failed capture returned
- Requested format not supported for the target page type
- Proxy unavailable or blocked by target site when using stealth/auto proxy
- Page load timeout exceeded — capture returns incomplete or blank result
- Invalid viewport dimensions outside clamped range — request rejected
- Payment not provided or insufficient — 402 Payment Required response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | The page to capture |
| format | string | Screenshot format (default png) |
| options | object | Capture options |
Output
Schema · Response
{
"type": "json",
"example": {
"payment": {
"payer": "0x000000000000000000000000000000000000dEaD",
"priceUsdcUnits": 1000
},
"artifact": {
"url": "https://example.com/v1/artifacts/00000000-0000-4000-8000-000000000000",
"data": "aGVsbG8gd29ybGQ=",
"bytes": 2048,
"format": "png"
}
}
}Tags
x402
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