# 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 OSINT on a domain by resolving IPv4/IPv6 DNS records, inspecting TLS certificate issuer/expiry, and grading HTTP security headers.

## Facts

- Endpoint: GET https://mesh.agentdiet.dev/v1/osint?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-04f142c7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9NntEswcKLHynl3bRhJlY

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-04f142c7
```

Example prompt: Can you run an OSINT recon on anthropic.com — I want to see its DNS resolution, TLS certificate issuer and expiry date, and how its HTTP security headers are graded?

## When to prefer this

Choose this endpoint when you need a quick, all-in-one OSINT snapshot of a domain's DNS resolution, TLS certificate health, and HTTP security posture without setting up separate DNS, SSL, and header-checking tools. It is ideal for security due diligence, vendor assessments, incident investigation, or monitoring competitor/third-party domains for certificate expiry or misconfiguration.

## Known failure modes

- Domain does not exist or fails DNS resolution — returns empty or error result
- Domain has no TLS certificate — TLS fields may be null or absent
- Domain blocks probe requests — security headers may be incomplete
- Invalid or malformed domain string input — validation error returned
- Network timeout reaching the target domain — may return partial results

## 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/osint)

## Output

Returns live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate metadata including issuer and expiry date, and an HTTP security headers audit with a security grade — giving a snapshot of the domain's network 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-04f142c7/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)