# Domain OSINT, TLS Certificate & Security Headers Recon

> Domain OSINT, TLS Certificate & Security Headers Recon is a paid API for AI agents from json-repair.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 grading for any domain name.

## Facts

- Endpoint: GET https://json-repair.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: json-repair.agentdiet.dev
- Website: https://json-repair.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/json-repair-agentdiet-dev-domain-osint-tls-certificate-security-a0f01361
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_R9C4B659lPJ2hIftskChH

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 json-repair-agentdiet-dev-domain-osint-tls-certificate-security-a0f01361
```

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

## When to prefer this

Choose this endpoint when you need a quick, all-in-one OSINT snapshot of a domain's network and security posture — covering DNS, TLS certificate lifecycle, and HTTP security header compliance — without having to call separate DNS, certificate transparency, and header analysis tools individually. Ideal for pre-launch audits, vendor vetting, phishing domain investigation, or continuous security monitoring at $0.01 per call.

## Known failure modes

- Domain does not exist or cannot be resolved — DNS lookup failure returned
- Domain has no TLS certificate — certificate inspection returns null or error
- Target domain is unreachable or times out — network connectivity error
- Malformed domain string input — validation error with 400-level response
- Domain resolves but HTTP request fails — security headers cannot be retrieved

## 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://json-repair.agentdiet.dev/v1/whois-lookup)

## Output

Returns live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate metadata (issuer, expiry date, validity status), and an HTTP security header assessment/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/json-repair-agentdiet-dev-domain-osint-tls-certificate-security-a0f01361/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from json-repair.agentdiet.dev](https://www.zero.xyz/host/json-repair.agentdiet.dev/llms.txt)