# ATK Domain Security Snapshot

> ATK Domain Security Snapshot is a paid API for AI agents from atkvn.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-29).

Returns a security snapshot of a domain including TLS certificate status, email authentication grade, post-quantum readiness, and actionable remediation todos.

## Facts

- Endpoint: GET https://atkvn.com/agent/v1/domain-snapshot?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/atk-domain-security-snapshot-e4cf4224
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_djTESjDnRWq3pOzofSvsp

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 atk-domain-security-snapshot-e4cf4224
```

Example prompt: Can you run a security snapshot on stripe.com and tell me how many days are left on their TLS certificate, what their email authentication grade is, and whether they support post-quantum key exchange?

## When to prefer this

Choose this endpoint when you need a fast, structured security posture summary for a specific domain — especially TLS expiry timing, email authentication grading, and post-quantum readiness — without setting up your own scanning infrastructure. It is ideal for automated vendor assessments, pre-launch checklists, or periodic monitoring of domain health. Prefer it over generic SSL checkers when you need machine-readable output with actionable todos.

## Known failure modes

- Invalid or non-existent domain returns an error or empty snapshot
- Domain is unreachable or DNS does not resolve, resulting in null TLS data
- Rate limiting or payment failure (x402) if USDC is not correctly attached
- Malformed domain input (e.g. includes protocol prefix like https://) may be rejected

## How this service works

One call, whole outside view of a domain: DNS records, email authentication grade (SPF, DMARC, MTA-STS), TLS certificate expiry and chain, post-quantum key exchange (X25519MLKEM768), HTTPS security headers, and a to-do list.

## Output

A JSON object containing: TLS certificate days remaining, whether hybrid post-quantum key exchange is active, the domain's email authentication grade (letter grade), and an ordered list of human-readable remediation todos (e.g. DMARC policy warnings). Example grade 'C' with todo 'p=none: monitoring only, spoofed mail is still delivered.'

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "domain"
     ],
     "properties": {
      "domain": {
       "type": "string",
       "description": "e.g. example.com"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "tls": {
   "certificate_days_left": 64,
   "hybrid_pq_key_exchange": false
  },
  "todo": [
   "p=none: monitoring only, spoofed mail is still delivered."
  ],
  "domain": "example.com",
  "email_auth": {
   "grade": "C"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/atk-domain-security-snapshot-e4cf4224/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from atkvn.com](https://www.zero.xyz/host/atkvn.com/llms.txt)