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Domain Ownership Evidence
x402
Domain Ownership Evidence is a paid API for AI agents from phion.systems, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).
Attests DNS and HTTPS domain-control proof status, producing signed evidence that a declared domain is under the caller's control
Price / call$0.003
Success—
StatusUnknown
How this service works
Attest declared DNS and HTTPS domain-control proof status
Output
A signed attestation record confirming the declared DNS and HTTPS domain-control proof status for the submitted domain, indicating whether control was successfully verified and binding the result as evidence that can be referenced in downstream trust workflows.
Example use cases
Agent identity binding before tool access
“Before my agent connects to that external tool, attest that it genuinely controls agent.myplatform.io — use the DNS TXT record we placed there and return signed domain-ownership evidence.”
Compliance proof for vendor onboarding
“Our vendor requires signed proof that we control payments.acmecorp.com — can you run the DNS and HTTPS domain-control check and produce an attestation document I can submit to them?”
Pre-issuance domain check for certificate workflow
“I'm about to issue a credential tied to api.startup.dev — please verify DNS and HTTPS domain-ownership evidence for that hostname first so I know the control proofs are valid before we proceed.”
Technical details
Endpoint
POSThttps://phion.systems/v1/paid/trust/domain-ownership-evidenceWhen to prefer
Choose this endpoint when you need a lightweight, signed attestation of DNS or HTTPS domain control — particularly in agentic workflows where downstream tools, credential issuers, or trust systems require verifiable proof that a specific hostname is under a declared party's control. Prefer it over manual DNS lookups when you need a tamper-evident, machine-readable evidence record rather than a raw DNS response.
Side effects
- DNS TXT record not found or does not match expected value — returns verification failure
- HTTPS well-known challenge file missing or unreachable — returns HTTPS proof failure
- Domain does not resolve — returns DNS resolution error
- Declared proof method not supported — returns unsupported method error
- Proof expired or stale — returns staleness or expiry error
- Malformed domain input — returns validation error
Input
Schema · Request body
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"type": "object"
}Tags
x402
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