# OrionCMD TLS Certificate Check

> OrionCMD TLS Certificate Check is a paid API for AI agents from orioncmd-checks-mcp.dario-9fa.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-31).

Looks up a domain's TLS certificate details from Certificate Transparency logs, including issuer, expiry, days remaining, lifetime usage, renewal stall detection, and a live HTTPS probe.

## Facts

- Endpoint: GET https://orioncmd-checks-mcp.dario-9fa.workers.dev/v1/cert?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/orioncmd-tls-certificate-check-a99ae66e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TUokxTsHe4K67c7X1HL4s

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 orioncmd-tls-certificate-check-a99ae66e
```

Example prompt: Can you check the TLS certificate status for stripe.com — I want to know who issued it, when it expires, how much of its lifetime is used up, and whether the live HTTPS connection looks healthy?

## When to prefer this

Choose this endpoint when you need TLS certificate metadata sourced from Certificate Transparency logs rather than the live served certificate — ideal for auditing, monitoring expiry, detecting renewal stalls, or verifying a domain's HTTPS health without needing direct certificate negotiation. Particularly useful for agents that need a cheap ($0.01) per-call check without setting up infrastructure.

## Known failure modes

- Domain not found in CT logs — returns found: false with no certificate data
- Invalid or malformed domain input — likely returns an error or empty result
- Domain with no public CT log entries (very rare or brand-new domain) — may return no data
- Live HTTPS probe failure — handshake_ok: false or non-200 HTTP status if site is down
- Rate limit or payment failure — HTTP 402 if payment not provided, or service error

## How this service works

Pay-per-call website checks for agents: TLS certificate (from CT logs), DNS/email-auth, domain expiry, and a site-health bundle. Also available as an MCP server at /mcp.

## Output

Returns a JSON object containing: the queried host, whether a cert was found in CT logs, the data source attribution, newest certificate details (issuer, days_left, not_after timestamp, pct_lifetime_used), a renewal_stall suspected flag, and a live_https_probe result with HTTP status code and TLS handshake success indicator.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "domain"
     ],
     "properties": {
      "domain": {
       "type": "string",
       "description": "Hostname or URL, 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": {
  "host": "example.com",
  "found": true,
  "data_source": "Certificate Transparency logs via Cert Spotter (api.certspotter.com). Certificate details are from CT logs, NOT from the live served certificate.",
  "newest_cert": {
   "issuer": "Let's Encrypt",
   "days_left": 50,
   "not_after": "2026-11-29T05:30:59Z",
   "pct_lifetime_used": 44
  },
  "renewal_stall": {
   "suspected": false
  },
  "live_https_probe": {
   "http_status": 200,
   "handshake_ok": true
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/orioncmd-tls-certificate-check-a99ae66e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from orioncmd-checks-mcp.dario-9fa.workers.dev](https://www.zero.xyz/host/orioncmd-checks-mcp.dario-9fa.workers.dev/llms.txt)