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AgentProof Watch URL
x402
AgentProof Watch URL is a paid API for AI agents from agentproof.hatchable.site, paid per call via x402, $0.25/call, status unknown (last checked 2026-10-11).
Registers a URL for continuous monitoring and returns a provenance receipt with an integrity hash whenever the page content changes
Price / call$0.25
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 confirming the watch was registered (ok: true), a tool identifier ('watch_url'), a receipt object containing a UUID receipt ID and a SHA-256 integrity hash of the monitored URL's current content, and a service identifier ('AgentProof'). This receipt serves as a tamper-evident provenance record for autonomous transaction audit trails.
Example use cases
Autonomous agent data-source attestation
“I need to prove that my trading agent is pulling prices from the official feed at https://feeds.example.com/eth-usd.json — can you register that URL for monitoring so every read produces a cryptographic provenance receipt I can show regulators?”
Content tampering detection for compliance
“Watch the policy page at https://legalco.com/terms and alert me with an integrity hash receipt any time it changes — our compliance team needs an auditable record of when those terms were last modified.”
Third-party SLA verification
“Set up monitoring on our vendor's status page at https://vendor.example.com/status so I have timestamped, hash-verified receipts proving what their uptime looked like during the contract period.”
Technical details
Endpoint
POSThttps://agentproof.hatchable.site/api/paid/watch_url?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an autonomous agent needs cryptographically verifiable proof that it read a specific URL at a specific time, particularly for regulatory, audit, or trust-infrastructure use cases. It is distinct from generic uptime monitors or scraping tools because it produces a machine-payable provenance receipt (Agent Transaction Passport™) with an integrity hash, suitable for use as evidence in autonomous transaction logs.
Side effects
- URL is unreachable or returns a non-200 status — watch registration may fail or receipt integrity hash cannot be generated
- Invalid or malformed URL in the request body — likely returns a 400 bad request
- Payment of 0.25 USDC not received or x402 payment header missing — returns 402 Payment Required
- URL behind authentication or firewall that blocks the monitoring agent — watch may register but content cannot be fetched
- Service unavailability on hatchable.site — returns 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | |
| webhook_url | string |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"tool": "watch_url",
"receipt": {
"id": "uuid",
"integrity_sha256": "..."
},
"service": "AgentProof"
}
}Tags
x402
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