# Domain OSINT, TLS Certificate & Security Headers Recon

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

## Facts

- Endpoint: GET https://whale-momentum.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: whale-momentum.agentdiet.dev
- Website: https://whale-momentum.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/whale-momentum-agentdiet-dev-domain-osint-tls-certificate-security-a9a852ac
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Qjgn2-rv7gVX3bvRy32aX

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 whale-momentum-agentdiet-dev-domain-osint-tls-certificate-security-a9a852ac
```

Example prompt: Can you run a full security recon on stripe.com — check its DNS resolution, TLS certificate issuer and expiry date, and HTTP security header grade?

## When to prefer this

Use this endpoint when you need a quick, live, all-in-one security recon for a domain — covering DNS, TLS certificate validity/expiry, and HTTP security headers in a single call — rather than querying separate DNS lookup tools, certificate transparency logs, or security header checkers individually.

## Known failure modes

- Domain does not exist or fails DNS resolution — returns error or empty DNS records
- Domain is reachable but TLS is not configured — certificate fields may be null or missing
- Connection timeout if the target domain is slow or unreachable
- Invalid domain string input (e.g. missing TLD or malformed) — validation error
- Security headers missing or non-standard — grade may reflect absence of 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://whale-momentum.agentdiet.dev/v1/tls-scanner)

## Output

Returns live DNS resolution results (IPv4 and/or IPv6 addresses), TLS certificate metadata (issuer, expiry date, validity status), and an HTTP security headers grade or breakdown — giving a snapshot of the domain's security posture at query time.

## 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/whale-momentum-agentdiet-dev-domain-osint-tls-certificate-security-a9a852ac/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from whale-momentum.agentdiet.dev](https://www.zero.xyz/host/whale-momentum.agentdiet.dev/llms.txt)