# Domain OSINT, TLS Certificate & Security Headers Recon

> Domain OSINT, TLS Certificate & Security Headers Recon is a paid API for AI agents from mesh.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).

Performs live DNS resolution, TLS certificate inspection, and HTTP security header grading for any target domain

## Facts

- Endpoint: GET https://mesh.agentdiet.dev/v1/cert-transparency?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: mesh.agentdiet.dev
- Website: https://mesh.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/mesh-agentdiet-dev-domain-osint-tls-certificate-security-headers-recon-7d66d0a8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_CnryzT4lC7anOLSeX-2NR

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability mesh-agentdiet-dev-domain-osint-tls-certificate-security-headers-recon-7d66d0a8
```

Example prompt: Can you check the TLS certificate details, DNS resolution, and HTTP security headers for stripe.com — I want to know the cert issuer, expiry date, and what security grade it gets?

## When to prefer this

Choose this endpoint when you need a quick, live, single-call OSINT snapshot covering DNS resolution, TLS certificate health, and HTTP security header posture for any domain — especially useful for security audits, competitor reconnaissance, pre-acquisition due diligence, or verifying your own infrastructure before launch. Prefer it over manual certificate transparency log searches when you need actionable, consolidated results in one request.

## Known failure modes

- Domain does not exist or fails DNS resolution — returns empty or error response
- Domain is reachable only via IPv4 or only IPv6 — partial results returned
- TLS certificate is self-signed or expired — may return anomalous cert data
- HTTP endpoint returns non-standard status codes preventing header analysis
- Domain actively blocks automated probes — may result in timeout or incomplete data
- Invalid domain format provided — validation error returned

## How this service works

Inspects live IPv4/IPv6 DNS resolution, TLS certificate issuer/expiry, and HTTP security grade. (Live x402 v2, IETF MPP & MCP endpoint at https://mesh.agentdiet.dev/v1/cert-transparency)

## Output

Returns live DNS resolution results (IPv4/IPv6 addresses), TLS certificate details (issuer, validity dates, expiry), and an HTTP security header grade summarizing the presence or absence of headers like HSTS, CSP, X-Frame-Options, and others.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "domain"
 ],
 "properties": {
  "domain": {
   "type": "string",
   "minLength": 1,
   "description": "Target domain name (e.g. anthropic.com, openai.com) for DNS, TLS certificate, and security header OSINT"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/mesh-agentdiet-dev-domain-osint-tls-certificate-security-headers-recon-7d66d0a8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mesh.agentdiet.dev](https://www.zero.xyz/host/mesh.agentdiet.dev/llms.txt)