Delx Commerce — Frame Ancestors Check

x402

Delx Commerce — Frame Ancestors Check is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).

Parses and validates the Content-Security-Policy `frame-ancestors` directive from a given HTTP header string, checking whether a required source is present.

Price / call$0.001

Seller volume →—

Success—

StatusUnknown

How this service works

Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.

Output

Returns a JSON object with the parsed `frame-ancestors` directive (source list, whether it's present), a pass/fail status indicating if the required source was found, and an evidence block with the SHA-256 hash of the input and confirmation that no data was retained or sent externally.

Example use cases

Clickjacking protection audit

“I have this HTTP response header from our app: "Content-Security-Policy: default-src 'self'; frame-ancestors 'none'". Can you confirm that frame-ancestors is correctly set to 'none' so we're protected against clickjacking?”

Verify partner embed permission

“We're rolling out an iframe integration with https://dashboard.partner.com. Check this CSP header to see if that origin is listed as an allowed frame ancestor: "Content-Security-Policy: frame-ancestors 'self' https://dashboard.partner.com"”

Catch missing frame-ancestors in CI

“Our CI pipeline just captured this CSP header from staging: "Content-Security-Policy: default-src 'self'; script-src 'nonce-abc123'". Is the frame-ancestors directive present at all, and does it include 'self'?”

Technical details

Endpoint

POSThttps://commerce.delx.ai/api/v1/x402/frame-ancestors-check?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need a fast, cheap, stateless check of whether a specific origin appears in a Content-Security-Policy `frame-ancestors` directive — especially in automated pipelines, CI/CD security audits, or agent-driven header compliance checks. It is privacy-friendly (no data retention, verifiable via input hash) and requires no signup, making it ideal for ephemeral agent workflows paid per-call in USDC.

Side effects

Malformed or missing CSP header string returns a parse error or empty sources list
Required source not found in directive yields a 'fail' status
Header exceeding 8192 characters is rejected
Missing required_source field causes validation to be inconclusive
No frame-ancestors directive in the header results in present=false

Input

Schema · Request body

Field	Type	Description
header	string	Header supplied to Frame Ancestors Check; used only for this bounded calculation and processed in memory without retention.
required_source	string	Required Source supplied to Frame Ancestors Check; used only for this bounded calculation and processed in memory without retention.

Output

Schema · Response

{
  "type": "json",
  "example": {
    "result": {
      "source": "'none'",
      "present": true,
      "sources": [
        "'none'"
      ],
      "directive": "frame-ancestors"
    },
    "schema": "delx/util-frame-ancestors-check/v1",
    "status": "pass",
    "evidence": {
      "retained": false,
      "input_sha256": "87d66a2da893969f3b55da12bea54f3990c499fe4d58ef57b180b13ceeb775b2",
      "external_calls": 0
    },
    "operation": "web_reliability:frame_ancestors_check"
  }
}

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