# Domain OSINT, TLS Certificate & Security Headers Recon

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

## Facts

- Endpoint: GET https://email-verify.agentdiet.dev/v1/osint?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: email-verify.agentdiet.dev
- Website: https://email-verify.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/email-verify-agentdiet-dev-domain-osint-tls-certificate-security-e635d6db
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_EPhkHRm6IQR4Q7daGl-aY

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 email-verify-agentdiet-dev-domain-osint-tls-certificate-security-e635d6db
```

Example prompt: Can you run a full domain OSINT check on anthropic.com — I want to see its DNS IP addresses, TLS certificate issuer and expiry date, and how its HTTP security headers are graded?

## When to prefer this

Use this endpoint when you need a single, consolidated OSINT snapshot of a domain's network and security configuration — covering DNS, TLS, and HTTP security headers in one call — rather than running separate DNS lookup, SSL checker, and security header scanner tools individually. Best for security due diligence, vendor assessments, competitive recon, or pre-deployment audits.

## Known failure modes

- Domain does not exist or cannot be resolved — DNS lookup fails with an error
- Domain resolves but TLS handshake fails (e.g. self-signed cert, expired cert) — partial results returned
- Target domain blocks or rate-limits HTTP requests — security header data unavailable
- Invalid or missing domain parameter — 400-level validation error
- Network timeout reaching the target domain — partial or empty response

## 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://email-verify.agentdiet.dev/v1/osint)

## Output

Returns live DNS resolution results (IPv4/IPv6 addresses), TLS certificate metadata (issuer, expiry date, validity), and an HTTP security header grade/audit for the target domain — all fetched in real time at the moment of the request.

## 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/email-verify-agentdiet-dev-domain-osint-tls-certificate-security-e635d6db/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from email-verify.agentdiet.dev](https://www.zero.xyz/host/email-verify.agentdiet.dev/llms.txt)