# broker-dns-recon: Domain OSINT, TLS & Security Headers Recon

> broker-dns-recon: Domain OSINT, TLS & Security Headers Recon is a paid API for AI agents from x402broker.com, paid per call via x402 or MPP, $0.01/call, status unknown (last checked 2026-10-20).

Inspects a domain's live IPv4/IPv6 DNS resolution, TLS certificate issuer/expiry, and HTTP security headers grade in a single call.

## Facts

- Endpoint: GET https://x402broker.com/v1/dns-recon?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402, MPP
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/broker-dns-recon-domain-osint-tls-security-headers-recon-6aa82200
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_MsGPeF2TY1cpxv4CFyugq

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 broker-dns-recon-domain-osint-tls-security-headers-recon-6aa82200
```

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

## When to prefer this

Choose this endpoint when you need a quick, combined view of a domain's DNS resolution, TLS certificate health, and HTTP security posture in a single cheap call ($0.01 USDC). Ideal for security audits, vendor vetting, pre-deployment checks, or domain OSINT workflows where you want DNS + TLS + headers in one shot rather than running separate tools.

## Known failure modes

- Domain does not exist or fails to resolve — returns DNS lookup error
- Domain has no HTTPS/TLS configured — TLS fields may be absent or return an error
- HTTP request to domain times out — security headers grade unavailable
- Invalid domain input format — returns validation error
- Domain actively blocks probes — partial or empty results

## 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-recon)

## Output

Returns live IPv4 and IPv6 addresses from DNS resolution, TLS certificate details 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/broker-dns-recon-domain-osint-tls-security-headers-recon-6aa82200/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)