# 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 reconnaissance on a domain, returning IPv4/IPv6 DNS resolution, TLS certificate issuer/expiry details, and HTTP security header grades.

## Facts

- Endpoint: GET https://mesh.agentdiet.dev/v1/whois-lookup?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-0bb8e71e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wrQh86kHXm_Bl0GBO3zoh

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-0bb8e71e
```

Example prompt: Can you run a full domain OSINT check on anthropic.com — I want to see its DNS resolution, TLS certificate issuer and expiry, and how it scores on HTTP security headers?

## When to prefer this

Choose this endpoint when you need a fast, combined OSINT snapshot of a domain's DNS, TLS, and HTTP security posture in a single call. It is ideal for pre-integration vendor vetting, certificate expiry monitoring, competitive security research, or threat intelligence enrichment where you need real live data rather than cached WHOIS records. Prefer this over generic WHOIS lookups when TLS and security header analysis are specifically required.

## Known failure modes

- Domain does not exist or is unresolvable — DNS lookup fails with an error
- Domain is reachable but serves no HTTPS — TLS certificate data unavailable
- Network timeout if the target domain is slow to respond
- Invalid domain string provided — validation error returned
- Domain blocks automated scanning — incomplete header data 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/whois-lookup)

## Output

Returns live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate metadata (issuer, expiry date, validity), and an HTTP security header assessment including presence/absence of headers like HSTS, CSP, X-Frame-Options, and an overall security grade for the domain.

## 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-0bb8e71e/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)