# Domain OSINT, TLS Certificate & Security Headers Recon

> Domain OSINT, TLS Certificate & Security Headers Recon is a paid API for AI agents from onchain-risk.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 analysis for a given domain

## Facts

- Endpoint: GET https://onchain-risk.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: onchain-risk.agentdiet.dev
- Website: https://onchain-risk.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/onchain-risk-agentdiet-dev-domain-osint-tls-certificate-security-9a2e3ef5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_lV_kYqqU_W2PfMGI5Gtf2

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 onchain-risk-agentdiet-dev-domain-osint-tls-certificate-security-9a2e3ef5
```

Example prompt: Can you check the DNS resolution, TLS certificate issuer and expiry, and HTTP security grade for anthropic.com?

## When to prefer this

Use this endpoint when you need a quick, all-in-one domain reconnaissance covering DNS resolution, TLS certificate validity and issuer, and HTTP security headers — especially for vendor due diligence, pre-integration security checks, OSINT investigations, or monitoring certificate expiry. It is preferable over generic WHOIS tools when you need live TLS and security header data alongside DNS.

## Known failure modes

- Domain does not exist or fails to resolve — returns DNS error or empty resolution
- Domain has no HTTPS/TLS — certificate fields absent or error returned
- Domain times out during live probe — may return partial results or timeout error
- Invalid domain format provided — validation error returned
- Target host actively blocks security probes — incomplete 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://onchain-risk.agentdiet.dev/v1/whois-lookup)

## Output

Returns live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate information including issuer and expiry date, and an HTTP security headers 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/onchain-risk-agentdiet-dev-domain-osint-tls-certificate-security-9a2e3ef5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from onchain-risk.agentdiet.dev](https://www.zero.xyz/host/onchain-risk.agentdiet.dev/llms.txt)