# 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 (IPv4/IPv6), TLS certificate inspection (issuer/expiry), and HTTP security header grading for a given domain.

## Facts

- Endpoint: GET https://mcp-compiler.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: 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-8837a3c9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_X3axLHzgeKp9YCguFrsU1

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-8837a3c9
```

Example prompt: Can you run a full domain OSINT recon on stripe.com — I want to see its DNS records (both IPv4 and IPv6), TLS certificate issuer and expiry date, and how it scores on HTTP security headers?

## When to prefer this

Choose this endpoint when you need a combined DNS + TLS + HTTP security header snapshot for a domain in one call, rather than querying separate tools for each. Ideal for security audits, vendor due diligence, competitive OSINT, or certificate expiry monitoring. Prefer this over generic WHOIS tools when TLS certificate details and HTTP security grading are also required.

## Known failure modes

- Domain does not exist or fails to resolve — likely returns an error indicating DNS lookup failure
- Domain has no TLS/HTTPS — certificate inspection fields may be empty or null
- Timeout on live network probe — may return partial results or a timeout error
- Invalid domain format passed — returns a validation error
- Domain actively blocks probes — may return incomplete or empty security header data

## 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/dns-whois-tls-recon)

## Output

Returns live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate metadata (issuer name, expiry date/validity), and an HTTP security headers assessment/grade for the queried domain, all gathered in a single call.

## 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-8837a3c9/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)