# Domain OSINT, TLS Certificate & Security Headers Recon

> Domain OSINT, TLS Certificate & Security Headers Recon is a paid API for AI agents from token-intel.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 and expiry, and HTTP security header grade.

## Facts

- Endpoint: GET https://token-intel.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: token-intel.agentdiet.dev
- Website: https://token-intel.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/token-intel-agentdiet-dev-domain-osint-tls-certificate-security-70bb6be3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2FOOoEgIg0oHOnd23MQlq

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 token-intel-agentdiet-dev-domain-osint-tls-certificate-security-70bb6be3
```

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 date, and HTTP security header grade?

## When to prefer this

Use this endpoint when you need a fast, all-in-one passive reconnaissance snapshot of a domain covering DNS, TLS certificate health, and HTTP security posture — especially useful for security audits, vendor due diligence, phishing investigation, or infrastructure monitoring without needing to run separate tools for each data type.

## Known failure modes

- Domain does not exist or is unresolvable — returns DNS resolution failure
- Domain has no TLS certificate (HTTP-only) — TLS fields may be empty or null
- Network timeout if the target domain is unreachable
- Invalid domain format provided — returns validation error
- Domain resolves but security headers endpoint is unresponsive — partial results 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://token-intel.agentdiet.dev/v1/whois-lookup)

## Output

Returns live DNS resolution data (IPv4 and IPv6 addresses), TLS certificate details (issuer name, expiry date), and an HTTP security header grade/analysis for the target 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/token-intel-agentdiet-dev-domain-osint-tls-certificate-security-70bb6be3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from token-intel.agentdiet.dev](https://www.zero.xyz/host/token-intel.agentdiet.dev/llms.txt)