# 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 (IPv4/IPv6), TLS certificate inspection (issuer/expiry), and HTTP security header grading for a given domain.

## Facts

- Endpoint: GET https://alpha-stream.agentdiet.dev/v1/tls-scanner?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-5a89bb5d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NTooQaF6TZ1awEtqBeAOr

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-5a89bb5d
```

Example prompt: Can you scan openai.com and tell me its DNS resolution (IPv4 and IPv6), who issued its TLS certificate and when it expires, and what its HTTP security header grade looks like?

## When to prefer this

Use this endpoint when you need a quick, unified OSINT snapshot of a domain's DNS, TLS, and HTTP security posture in a single call. Prefer it over manual DNS lookups or separate SSL checkers when you want all three dimensions — IP resolution, certificate metadata, and security header grading — in one response, especially for due diligence, vendor risk assessment, or pre-deployment security checks.

## Known failure modes

- Domain does not exist or fails DNS resolution — empty or error response
- Domain is unreachable or times out — timeout error
- Invalid or malformed domain input — validation error
- Domain has no HTTPS/TLS — certificate fields may be null or absent
- HTTP security headers absent — grade may reflect missing headers

## 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/tls-scanner)

## Output

Returns live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate details (issuer, expiry date, validity), and an HTTP security header grade/assessment 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/alpha-stream-agentdiet-dev-domain-osint-tls-certificate-security-5a89bb5d/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)