# Domain OSINT, TLS Certificate & Security Headers Recon

> Domain OSINT, TLS Certificate & Security Headers Recon is a paid API for AI agents from whale-momentum.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://whale-momentum.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: whale-momentum.agentdiet.dev
- Website: https://whale-momentum.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/whale-momentum-agentdiet-dev-domain-osint-tls-certificate-security-c706fba9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AJj9AcIRyCoF2QCK8Hr2b

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 whale-momentum-agentdiet-dev-domain-osint-tls-certificate-security-c706fba9
```

Example prompt: Can you run a full DNS, TLS certificate, and HTTP security headers recon on anthropic.com — I want to see the IPv4/IPv6 addresses, who issued the cert and when it expires, and what their security header grade is?

## When to prefer this

Use this endpoint when you need a combined, single-call OSINT snapshot of a domain's DNS infrastructure, TLS certificate health, and HTTP security posture. It is ideal for pre-acquisition due diligence, vendor security assessments, certificate expiry monitoring, or competitive infrastructure reconnaissance, especially when you want all three data layers (DNS + TLS + headers) in one result rather than calling separate specialized tools.

## Known failure modes

- Domain does not exist or fails DNS resolution — returns error or empty DNS records
- Domain has no TLS certificate (plain HTTP only) — TLS fields absent or null
- Domain is unreachable/timed out — network timeout error
- Invalid domain format provided — validation error on input
- Security headers entirely absent — grade reflects missing headers rather than an error

## 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://whale-momentum.agentdiet.dev/v1/dns-whois-tls-recon)

## Output

Returns live DNS resolution results including IPv4 and IPv6 addresses, TLS certificate metadata (issuer, expiry date, validity status), and an HTTP security headers grade reflecting the presence or absence of headers like HSTS, CSP, X-Frame-Options, and similar security controls.

## 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/whale-momentum-agentdiet-dev-domain-osint-tls-certificate-security-c706fba9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from whale-momentum.agentdiet.dev](https://www.zero.xyz/host/whale-momentum.agentdiet.dev/llms.txt)