# Domain OSINT, TLS Certificate & Security Headers Recon

> Domain OSINT, TLS Certificate & Security Headers Recon is a paid API for AI agents from serp-extract.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-23).

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

## Facts

- Endpoint: POST https://serp-extract.agentdiet.dev/v1/domain-osint?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Provider: serp-extract.agentdiet.dev
- Website: https://serp-extract.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/serp-extract-agentdiet-dev-domain-osint-tls-certificate-security-5fbb5ee2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_RInr_g6fHr-BWujJ4u6HK

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 serp-extract-agentdiet-dev-domain-osint-tls-certificate-security-5fbb5ee2 -d '<json body>'
```

Example prompt: Can you run a full domain OSINT check on stripe.com — I want to see its DNS resolution (IPv4 and IPv6), who issued its TLS certificate and when it expires, and how its HTTP security headers are graded?

## When to prefer this

Choose this endpoint when you need a fast, single-call snapshot combining DNS resolution, TLS certificate inspection, and HTTP security header analysis for any domain — ideal for OSINT workflows, security audits, phishing investigations, or compliance checks where you need all three signals together rather than querying separate tools.

## Known failure modes

- Domain does not resolve — DNS lookup fails, returns error or empty IP fields
- TLS certificate absent or expired — cert details may be null or contain expiry warnings
- Domain unreachable over HTTP/HTTPS — security headers cannot be fetched
- Invalid domain input (e.g. malformed string) — validation error returned
- Target blocks automated probes — incomplete or partial data returned

## 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://serp-extract.agentdiet.dev/v1/domain-osint)

## Output

Returns a structured object containing the domain's live IPv4 and IPv6 DNS resolution results, TLS certificate metadata (issuer, validity dates, expiry status), and an HTTP security headers analysis including grade or score — giving a comprehensive snapshot of the domain's network and security configuration.

## 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/serp-extract-agentdiet-dev-domain-osint-tls-certificate-security-5fbb5ee2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from serp-extract.agentdiet.dev](https://www.zero.xyz/host/serp-extract.agentdiet.dev/llms.txt)