# Domain OSINT, TLS Certificate & Security Headers Recon

> Domain OSINT, TLS Certificate & Security Headers Recon is a paid API for AI agents from alpha-stream.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 analysis for a given domain name.

## Facts

- Endpoint: GET https://alpha-stream.agentdiet.dev/v1/asn-lookup?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: alpha-stream.agentdiet.dev
- Website: https://alpha-stream.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/alpha-stream-agentdiet-dev-domain-osint-tls-certificate-security-8b0451cd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KgRcJUrWbYLKUhEPDU7FG

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 alpha-stream-agentdiet-dev-domain-osint-tls-certificate-security-8b0451cd
```

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

## When to prefer this

Choose this endpoint when you need a combined, real-time view of a domain's DNS, TLS, and HTTP security posture in a single call, particularly for OSINT investigations, security audits, or due diligence workflows. It is especially useful when you need TLS certificate metadata (issuer, expiry) alongside security header grading without operating your own scanning infrastructure.

## Known failure modes

- Domain does not exist or fails DNS resolution — likely returns an error or empty DNS fields
- TLS handshake failure if the target has no HTTPS endpoint — certificate fields may be null
- Domain parameter missing or malformed — returns 400 validation error
- Target host is unreachable or times out — may return a timeout or partial result
- Payment not included or insufficient — returns HTTP 402 requiring x402 payment

## 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://alpha-stream.agentdiet.dev/v1/asn-lookup)

## Output

Returns live DNS resolution results (IPv4/IPv6 addresses), TLS certificate details (issuer, expiry date, validity status), and an HTTP security header analysis grade for the target 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/alpha-stream-agentdiet-dev-domain-osint-tls-certificate-security-8b0451cd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from alpha-stream.agentdiet.dev](https://www.zero.xyz/host/alpha-stream.agentdiet.dev/llms.txt)