# Domain OSINT, TLS Certificate & Security Headers Recon

> Domain OSINT, TLS Certificate & Security Headers Recon is a paid API for AI agents from x402broker.com, 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 target domain.

## Facts

- Endpoint: GET https://x402broker.com/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: x402broker.com
- Website: https://x402broker.com
- Canonical page: https://www.zero.xyz/c/x402broker-com-domain-osint-tls-certificate-security-headers-recon-eac0b574
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_LOP9sjtqtVuV7YiCQUto_

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 x402broker-com-domain-osint-tls-certificate-security-headers-recon-eac0b574
```

Example prompt: Can you run a full DNS, TLS certificate, and HTTP security headers recon on stripe.com — I want to see its IP addresses, who issued the cert and when it expires, and what its security header grade looks like?

## When to prefer this

Choose this endpoint when you need a quick, all-in-one live recon of a domain's DNS, TLS certificate, and HTTP security posture in a single call — especially useful for OSINT workflows, security audits, certificate expiry monitoring, or infrastructure reconnaissance on any domain without needing separate DNS, SSL, and header-checking tools.

## Known failure modes

- Domain does not exist or fails DNS resolution — returns error or empty DNS records
- Target domain has no HTTPS/TLS endpoint — TLS fields may be absent or null
- Domain is unreachable or times out during live probe — returns timeout or connection error
- Malformed domain input — returns validation error for invalid domain string
- Domain blocks automated probes — security headers or TLS handshake may fail

## 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://x402broker.com/v1/dns-whois-tls-recon)

## Output

Returns live IPv4 and IPv6 DNS resolution results, TLS certificate metadata (issuer, validity dates, expiry), and an HTTP security header audit including presence and grading of headers such as HSTS, CSP, X-Frame-Options, and related security controls 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/x402broker-com-domain-osint-tls-certificate-security-headers-recon-eac0b574/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402broker.com](https://www.zero.xyz/host/x402broker.com/llms.txt)