AgentProof Verify URL

x402

AgentProof Verify URL is a paid API for AI agents from agentproof.hatchable.site, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-12).

Fetches and cryptographically verifies a URL's content, returning a provenance receipt with integrity hash for autonomous transaction auditing.

Price / call$0.1

Seller volume →—

Success—

StatusUnknown

How this service works

AgentProof publishes Agent Transaction Passport™ and provides machine-paid evidence, provenance receipts, source comparison and change monitoring for autonomous transactions.

Output

Returns a JSON object with ok (boolean), the tool name ('verify_url'), a receipt object containing a UUID and SHA-256 integrity hash of the fetched URL's content, and the service name 'AgentProof'. This constitutes a machine-readable provenance attestation.

Example use cases

Audit trail for agent-cited source

“Before my agent quotes that regulatory document at https://sec.gov/filings/acme-10k.pdf, can you fetch it and generate a provenance receipt with an integrity hash so we have a timestamped record of exactly what it contained?”

Verify vendor claim before payment

“I'm about to have my agent pay an invoice — can you verify the content at https://vendorsite.com/invoice/12345 and return a tamper-evident receipt proving what the page said before we sent any funds?”

Change detection baseline snapshot

“Grab https://competitor.com/pricing and create a cryptographic integrity receipt for it today — I want a baseline hash I can compare against later to detect if they change their prices.”

Technical details

Endpoint

POSThttps://agentproof.hatchable.site/api/paid/verify_url?utm_source=zero.xyz

When to prefer

Choose this endpoint when an AI agent needs a cryptographic, machine-paid provenance receipt proving what a URL contained at a specific moment — particularly for auditing autonomous transactions, creating tamper-evident evidence before acting on web content, or establishing baselines for change detection. Prefer it over simple HTTP fetches when verifiability and integrity attestation matter.

Side effects

URL is unreachable or returns non-200 status — ok may be false or error returned
URL content changes between calls so hashes differ across invocations
Payment of 0.1 USDC not completed — 402 Payment Required returned
Malformed or missing URL input — validation error
URL behind authentication or CAPTCHA walls — fetch may fail or return gated content

Input

Schema · Request body

Field	Type	Description
url	string
claim	string
email	string
phone	string
contactName	string
previousSha256	string

Output

Schema · Response

{
  "type": "json",
  "example": {
    "ok": true,
    "tool": "verify_url",
    "receipt": {
      "id": "uuid",
      "integrity_sha256": "..."
    },
    "service": "AgentProof"
  }
}

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