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Agent402 Domain Security Audit Pro
x402
Agent402 Domain Security Audit Pro is a paid API for AI agents from agent402.tools, paid per call via x402, $0.85/call, status unknown (last checked 2026-09-14).
Performs a comprehensive domain security audit covering TLS, email authentication (SPF/DKIM/DMARC), HTTP security headers, and synthesizes an AI-generated graded report with composite score.
Price / call$0.85
Success—
StatusUnknown
How this service works
The deeper tier: everything in the standard audit plus the attack surface from Certificate Transparency logs (subdomains), the detected tech stack, and domain registration, in a longer graded report with a fuller remediation plan. USDC or card (Stripe). Not cached.
Output
Returns a structured report containing: an overall letter grade (A–F), a composite score (0–100), sub-scores for email authentication and HTTP security headers, TLS certificate days remaining, per-check result tables (e.g. SPF pass/fail with detail), and a full AI-synthesized narrative report. Available as a markdown document or structured JSON object.
Example use cases
Pre-launch security check for new site
“Before we go live, can you audit the security of mystartup.io and tell me the overall grade and any issues with SPF, DMARC, or security headers I need to fix?”
Vendor security due diligence
“I need to assess a vendor's domain security posture — can you run a pro domain audit on acmecorp.com and return the full JSON report so I can pull the composite score and individual check results?”
Email deliverability troubleshooting
“Our emails from notifications.shopbrand.com keep going to spam — can you audit that domain and show me the email authentication checks, specifically SPF and DMARC status?”
Technical details
Endpoint
POSThttps://agent402.tools/v1/domain-audit/proWhen to prefer
Choose this endpoint when you need a comprehensive, AI-synthesized domain security report covering TLS, email authentication, and HTTP headers in one call, rather than running separate DNS lookup, header inspection, or certificate check tools individually. Especially valuable when you need a human-readable graded report suitable for sharing with stakeholders, or structured JSON for programmatic security scoring pipelines. Prefer over generic DNS tools when email deliverability and security posture need to be evaluated together.
Side effects
- Invalid or non-existent domain returns an error or empty result
- Domain with no DNS records may produce incomplete scores
- Network timeouts during live DNS or TLS probes may cause partial results
- Malformed input (e.g. passing a path instead of a hostname) may result in a 400 error
- Rate limiting or payment failure over x402 protocol returns 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| domain | string | The domain to audit, e.g. example.com (also accepts a URL or host). |
| format | string | Response shape (default markdown report). |
Output
Schema · Response
{
"type": "json",
"example": {
"meta": {
"tier": "domain-audit-pro",
"grade": "B",
"domain": "example.com",
"composite": 82,
"email_score": 90,
"header_score": 70,
"synthesis_model": "anthropic/claude-opus-5",
"tls_days_remaining": 204
},
"grade": "B",
"domain": "example.com",
"report": "# Domain Security Audit: example.com\n\n**Overall grade: B** (82/100)\n\n## Overall grade\n...",
"tables": [
{
"name": "email-checks",
"rows": [
[
"spf",
"pass",
"SPF record present, 1 DNS lookup, ~all qualifier"
]
],
"label": "Email authentication checks",
"columns": [
"Check",
"Status",
"Detail"
]
}
],
"sources": [],
"composite": 82
}
}Tags
x402
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