# Domain OSINT, TLS Certificate & Security Headers Recon

> Domain OSINT, TLS Certificate & Security Headers Recon is a paid API for AI agents from llms-generator.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://llms-generator.agentdiet.dev/v1/dns-recon?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: llms-generator.agentdiet.dev
- Website: https://llms-generator.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/llms-generator-agentdiet-dev-domain-osint-tls-certificate-security-d3750269
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-orY7fMVVdBH3vRvDd2H9

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 llms-generator-agentdiet-dev-domain-osint-tls-certificate-security-d3750269
```

Example prompt: Can you run a full DNS and TLS security recon on stripe.com — I want to see its IPv4/IPv6 resolution, who issued the TLS certificate and when it expires, and how it scores on HTTP security headers?

## When to prefer this

Choose this endpoint when you need a combined, single-call OSINT snapshot covering DNS, TLS certificate metadata, and HTTP security headers for a domain — especially useful for due diligence, security audits, certificate expiry tracking, or competitive infrastructure research, without needing to run separate DNS, SSL, and header tools.

## Known failure modes

- Invalid or non-existent domain returns an error or empty DNS result
- Domain unreachable over HTTPS prevents TLS certificate inspection
- Timeout if the target domain is slow to respond
- Private/internal domains not resolvable from the public internet
- Rate limiting or payment failure (HTTP 402) if USDC micropayment not provided

## 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://llms-generator.agentdiet.dev/v1/dns-recon)

## Output

Returns live DNS resolution data (IPv4/IPv6 addresses), TLS certificate details (issuer name, expiry date, validity), and an HTTP security header grade/audit 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/llms-generator-agentdiet-dev-domain-osint-tls-certificate-security-d3750269/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from llms-generator.agentdiet.dev](https://www.zero.xyz/host/llms-generator.agentdiet.dev/llms.txt)