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

## Facts

- Endpoint: GET https://mcp-compiler.agentdiet.dev/v1/ssl-audit?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-8e3dcfa9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_eo8fMd1q4wmqe4yESx9Js

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-8e3dcfa9
```

Example prompt: Can you do a full security recon on anthropic.com — I want to see the DNS resolution (both IPv4 and IPv6), who issued the TLS certificate and when it expires, and the HTTP security headers grade?

## When to prefer this

Choose this endpoint when you need a combined, live snapshot of a domain's DNS, TLS, and HTTP security posture in a single call — especially for security due diligence, pre-integration vendor checks, certificate expiry monitoring, or domain OSINT investigations. It is preferable to separate DNS or SSL tools when you need all three data layers together without chaining multiple API calls.

## Known failure modes

- Domain does not exist or cannot be resolved — DNS lookup failure returned
- Domain is reachable but has no TLS certificate (HTTP-only) — certificate data absent
- Domain is valid but TLS certificate is expired or self-signed — flagged in response
- Network timeout reaching the target domain — error or partial result returned
- Invalid domain format provided — validation error 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://mcp-compiler.agentdiet.dev/v1/ssl-audit)

## Output

Returns live DNS resolution results (IPv4/IPv6 addresses), TLS certificate metadata (issuer, expiry date, validity status), and an HTTP security headers audit/grade for the queried 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/mcp-compiler-agentdiet-dev-domain-osint-tls-certificate-security-8e3dcfa9/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)