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TD Agent Utility – Checkpoint Save (Website & Deployment Verification)
x402
TD Agent Utility – Checkpoint Save (Website & Deployment Verification) is a paid API for AI agents from tdagentutility.co.uk, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-16).
Saves a verification checkpoint for a website or deployment, storing the result of HTTP, DNS, TLS, and Chromium screenshot checks for later retrieval.
Price / call$0.002
Success—
StatusUnknown
How this service works
Independent website and deployment verification for AI agents: HTTP, DNS, TLS and Chromium screenshot evidence. Three deterministic tools, x402 V2 Base USDC.
Output
Returns a JSON object containing a unique checkpoint key, the tool identifier ('checkpoint_save'), a version number, a result status (e.g. 'PASS'), timestamps for creation, update, and expiry, the size of the stored data in bytes, and any warnings generated during the save operation.
Example use cases
Post-deploy evidence archival
“We just shipped a new version of our app at https://shop.acme.io — save a verification checkpoint right now so I have a timestamped record that the site was live and passing all checks at launch time.”
Compliance audit snapshot
“I need to store a checkpoint proving that https://portal.fintech-corp.com was reachable and TLS-valid at the time of our quarterly audit — save it now and give me the key so I can retrieve it later.”
Continuous monitoring baseline
“Set a checkpoint baseline for https://staging.myservice.dev after our latest deployment so I can compare it against future verification runs and catch any regressions.”
Technical details
Endpoint
POSThttps://tdagentutility.co.uk/v1/checkpoint-save?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to durably persist the result of a website or deployment verification check — particularly when you need a tamper-evident, timestamped record (with expiry) that you can retrieve or share later. Prefer this over in-memory or ephemeral logging when auditability, compliance evidence, or cross-session retrieval of verification state is required.
Side effects
- Missing or invalid target URL returns a validation error
- Expired or invalid payment results in a 402 Payment Required response
- Storage backend unavailable causes a 503 error
- Malformed request body returns a 400 Bad Request
- Checkpoint key collision may cause an update rather than a new create
Output
Schema · Response
{
"type": "json",
"example": {
"key": "",
"tool": "checkpoint_save",
"version": 0,
"warnings": [],
"checked_at": "2026-10-15T00:00:00Z",
"created_at": 0,
"expires_at": 0,
"size_bytes": 0,
"updated_at": 0,
"result_status": "PASS"
}
}Tags
x402
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