# Domain OSINT, TLS Certificate & Security Headers Recon

> Domain OSINT, TLS Certificate & Security Headers Recon is a paid API for AI agents from mcp-compiler.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).

Performs live DNS resolution, TLS certificate inspection, and HTTP security header grading for a given domain.

## Facts

- Endpoint: GET https://mcp-compiler.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: mcp-compiler.agentdiet.dev
- Website: https://mcp-compiler.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/mcp-compiler-agentdiet-dev-domain-osint-tls-certificate-security-4194a5ad
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_m_Uzr2FkhpxKHgpciMWxp

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 mcp-compiler-agentdiet-dev-domain-osint-tls-certificate-security-4194a5ad
```

Example prompt: Can you run a full OSINT recon on openai.com — I want to see its live DNS resolution for IPv4 and IPv6, the TLS certificate issuer and expiry date, and the HTTP security header grade?

## When to prefer this

Use this endpoint when you need a fast, single-call OSINT snapshot of a domain's network security posture, combining DNS, TLS, and HTTP security headers in one response. Prefer it over manual nslookup or curl when you need structured, machine-readable output suitable for automated security audits, vendor assessments, or pre-launch checks.

## Known failure modes

- Domain does not exist or fails DNS resolution — returns error or empty DNS results
- Domain has no TLS certificate (plain HTTP only) — TLS fields may be null or absent
- Domain blocks the probe IP — may return timeout or incomplete data
- Malformed domain input — returns validation error
- Temporary network issues causing incomplete recon 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://mcp-compiler.agentdiet.dev/v1/osint)

## Output

Returns live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate details including issuer and expiry date, and an HTTP security header grade assessing the domain's 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/mcp-compiler-agentdiet-dev-domain-osint-tls-certificate-security-4194a5ad/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mcp-compiler.agentdiet.dev](https://www.zero.xyz/host/mcp-compiler.agentdiet.dev/llms.txt)