# 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).

Inspects a domain's live DNS resolution (IPv4/IPv6), TLS certificate issuer and expiry, and HTTP security header grade in a single call.

## Facts

- Endpoint: GET https://mesh.agentdiet.dev/v1/ssl-audit?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-68ad985f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pASwaDivaTqHc3V8Pj_qb

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-68ad985f
```

Example prompt: Can you run a full DNS, TLS certificate, and HTTP security header audit on anthropic.com and tell me who issued the cert, when it expires, and what security grade the headers get?

## When to prefer this

Choose this endpoint when you need a combined DNS + TLS + HTTP security header snapshot for a domain in a single low-latency call. Prefer it over separate DNS lookup tools, SSL checkers, or security header scanners when you want consolidated OSINT without chaining multiple APIs. Particularly useful for security audits, pre-launch checks, competitive reconnaissance, or monitoring certificate expiry across a set of domains.

## Known failure modes

- Domain does not exist or fails DNS resolution — returns error or empty DNS results
- Domain has no HTTPS endpoint — TLS certificate fields unavailable
- Rate limiting or network timeout reaching the target domain — partial or failed response
- Invalid domain format in input — validation error returned
- Domain exists but HTTP server is unreachable — security headers cannot be retrieved

## 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/ssl-audit)

## Output

Returns live DNS resolution results (IPv4/IPv6 addresses), TLS certificate details (issuer, expiry date, validity status), and an HTTP security header audit including presence and grade of headers such as HSTS, CSP, X-Frame-Options, and related security signals.

## 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-68ad985f/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)