# 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 (issuer/expiry), and HTTP security header grading for a target domain.

## Facts

- Endpoint: GET https://mesh.agentdiet.dev/v1/dns-whois-tls-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-f3e6109b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_eknj5fCPCvRgMbT1tu_OU

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-f3e6109b
```

Example prompt: Can you do a full DNS, TLS certificate, and security headers recon on anthropic.com — I want to know what IPs it resolves to, who issued the SSL cert and when it expires, and what security headers their server is sending?

## When to prefer this

Choose this endpoint when you need a combined, single-call recon of DNS records, TLS certificate metadata, and HTTP security headers for any domain — ideal for security audits, vendor due diligence, certificate expiry checks, or OSINT investigations where you want infrastructure intelligence without assembling multiple separate tools.

## Known failure modes

- Domain does not exist or fails DNS resolution — returns error or empty DNS results
- Domain is unreachable over HTTPS — TLS certificate data may be unavailable
- Domain has no IPv6 records — IPv6 field may be empty
- HTTP security headers unavailable if server does not respond to HTTP/HTTPS requests
- Invalid domain format submitted — returns validation error
- Payment not completed via x402 — returns 402 Payment Required

## 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-whois-tls-recon)

## Output

Returns live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate metadata (issuer, expiry date, chain details), and an HTTP security headers inspection with a security grade — giving a comprehensive snapshot of the domain's infrastructure and security posture.

## 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-f3e6109b/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)