# 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 (IPv4/IPv6), TLS certificate inspection, and HTTP security header grading for any target domain.

## Facts

- Endpoint: GET https://mesh.agentdiet.dev/v1/dns-recon?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-6346ef3f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qqM6dduJfG9sWAdKwQGiR

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-6346ef3f
```

Example prompt: Can you run a full DNS and TLS recon on stripe.com — I want to see its IPv4/IPv6 addresses, who issued the SSL certificate and when it expires, and what security headers it's serving?

## When to prefer this

Choose this endpoint when you need a quick, all-in-one passive recon snapshot of a domain covering DNS, TLS certificate health, and HTTP security posture. It is well-suited for security audits, OSINT investigations, pre-launch checklists, or certificate expiry monitoring. Prefer it over separate DNS/TLS tools when you want a single call returning all three signal categories in one response.

## Known failure modes

- Domain does not exist or fails DNS resolution — likely returns an error or empty DNS records
- Domain exists but does not serve HTTPS — TLS fields may be null or absent
- Payment not received (x402) — returns 402 Payment Required
- Domain is unreachable or times out — connection error returned
- Invalid or malformed domain string provided — validation error

## 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/dns-recon)

## Output

Returns live DNS resolution data including IPv4 and IPv6 addresses, TLS certificate details such as issuer, subject, and expiry date, and an HTTP security grade based on the presence and configuration of security headers like HSTS, CSP, X-Frame-Options, and similar.

## 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-6346ef3f/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)