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SiteSignal Vendor Due Diligence
x402
SiteSignal Vendor Due Diligence is a paid API for AI agents from trinity-throw-thursday-gravity.trycloudflare.com, paid per call via x402, $0.08/call, status unknown (last checked 2026-09-14).
Collects a bounded evidence pack of public-website, HTTP, TLS, and response-header signals for a vendor URL to support human due diligence decisions.
Price / call$0.08
Success—
StatusUnknown
How this service works
Create a bounded public-website, HTTP, TLS, and response-header evidence pack for human vendor due diligence.
Output
Returns a structured evidence pack including TLS certificate metadata (issuer, expiry, chain), observed HTTP response headers (HSTS, CSP, X-Frame-Options, etc.), security header grades, and other observable public signals for the target vendor URL — formatted to support human review in a due diligence process.
Example use cases
Procurement vendor security check
“We're about to onboard Stripe as a payment vendor — can you collect a public evidence pack for https://stripe.com focusing on TLS and response header security so we have something for the procurement file?”
SaaS tool compliance review
“Before I approve this new SaaS tool for our team, can you pull the public HTTP, TLS, and header evidence for https://notion.so? Context is an internal compliance review for data handling risk.”
Supplier onboarding risk assessment
“We have a new logistics supplier at https://example-logistics.co — can you gather observable security signals from their public website? We're trying to assess third-party risk before signing the contract.”
Technical details
Endpoint
GEThttps://trinity-throw-thursday-gravity.trycloudflare.com/x402/vendor-due-diligenceWhen to prefer
Choose this endpoint when you need a quick, bounded public evidence pack for vendor due diligence that covers TLS, HTTP, and security-header signals in a single call — especially when you have a specific decision context (e.g. procurement, compliance review, contract signing) and want structured, human-reviewable output. Prefer this over raw TLS or header checkers when you need a holistic, decision-focused artifact rather than a single-signal inspection.
Side effects
- Invalid or unreachable URL returns an error indicating the target could not be fetched
- Private or intranet URLs not accessible from the public internet will fail
- Missing required 'url' or 'decisionContext' query parameters returns a validation error
- Cloudflare Tunnel downtime may cause intermittent 5xx errors
- Vendor sites with aggressive bot blocking may return incomplete or blocked responses
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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