Vellium & Co

Directory › Security and audits › Security Header Diff

Security Header Diff

Compare a fixed list of ten security-relevant response headers across two releases and name the specific reverts. Reports a header removed, added or changed, and separately a reduced Strict-Transport-Security max-age, dropped includeSubDoma

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Our latest check (2026-10-11)

Answering
Yes — valid x402 payment terms
Time to answer
384 ms
Price
$0.110 per call
Paying buyers, last 30 days
1 (directory's own records)
Paid calls, last 30 days
1
Category
Security and audits
Address
https://api.zfinia.com/x402/v1/security-header-diff

Accuracy: paid answers checked against an independent record

Not yet in our paid checks. A seller we have not checked has neither passed nor failed.

For agents

This page as JSON: /sellers/c14bff82c0fa.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).

Sellers can see the evidence behind their checks and ask for a re-check at [email protected].