Every returned paragraph has a stable ID your agent can quote and trace.
Web evidence for autonomous agents
Read the web.
Keep the evidence.
Clean, cited page content with integrity hashes, redirect and freshness receipts, and transparent prompt-injection warnings—in one machine-payable response.
Ready. Enter a public URL.
Inspect response metadata
Connect your agent: free MCP check → paid cited evidence
Raw bytes and normalized content are independently hashed at retrieval time.
See the exact suspicious excerpt. No opaque “trust us” safety score.
Pricing: two ways to pay
1 cent a page with a card pack. 50 cents if your agent pays per call.
| Card pack | Pay per call (Stripe MPP) | |
|---|---|---|
| Price per page | $0.01 | $0.50 |
| How you pay | $5.00 once, by card, for 500 pages; you get an API key | Your agent pays $0.50 at each call, with no key |
| Why the difference | One card charge covers 500 pages | $0.50 is Stripe's smallest card charge, so each call costs at least that |
Either way you pay only for extractions that succeed. If you can store an API key, the card pack is 50 times cheaper.
Pay with a card
500 extractions for $5.00.
One cent a page. Pay once through Stripe Checkout and get an API key for REST and MCP. A credit is used only when an extraction succeeds.
After payment, your key appears once on the next page, in the browser you paid from: copy it then. Send it as Authorization: Bearer <key> on POST /v1/evidence. Lost it? Open a support case with your Stripe receipt reference. Unused credits are refundable within 30 days.
What your agent gets back
A real paid response for example.com, built by the same fetcher the service runs (shortened only where marked). Your agent cites [p1], keeps the hashes as proof of what the page said, and reads the security block before trusting the text.
{
"schema": "proof-fetch-evidence.v1",
"retrievedAt": "2026-10-10T01:45:19.213Z",
"requestedUrl": "https://example.com/",
"finalUrl": "https://example.com/",
"redirects": [],
"http": { "status": 200, "contentType": "text/html", "bytes": 577 },
"document": {
"title": "Example Domain",
"paragraphCount": 1,
"truncated": false,
"paragraphs": [{ "id": "p1", "text": "Example Domain This domain is for use in documentation examples without needing permission. This is not a service; avoid relying on it for testing and monitoring purposes." }]
},
"integrity": {
"rawSha256": "25ddf2c883e0d1958ea971d279a7e4f0fd446724ee3db7db19dadabd4a62e484",
"contentSha256": "cbf3f738cc4646f250e5964ab74741b434912a67e1cce86c798bf71af1cf85c8"
},
"security": { "risk": "low", "indicatorCount": 0, "indicators": [] }
/* shortened: etag, lastModified, description, language, character counts, contentText */
}Try one public page
Start with example.com, or replace it with a public article your agent needs to cite. The free check returns metadata, hashes and the first 1,000 characters or so of extracted text, so a short page comes back whole. This does not create an account or make a payment.
After a successful check, your agent can request the paid response below. It receives a payment challenge first; payment requires your separate authorization.
Run the free check to prepare the request.
Anonymous funnel events store a random per-page flow ID, a known referral label and the step reached—not your URL, page text, IP address or credentials. No analytics cookie is set. Counts can include bots and owner tests.