# Site Uptime and SSL Checker

> Site Uptime and SSL Checker is a paid API for AI agents from intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).

Checks website uptime, HTTP status, response latency, redirect chain, security headers, and TLS certificate details including expiry from certificate-transparency logs for any hostname or URL.

## Facts

- Endpoint: GET https://intel.rallylive.ca/uptime-ssl
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/site-uptime-and-ssl-checker-8336b6d4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_S4Py6qheEKvQOJ0rwahLE

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 site-uptime-and-ssl-checker-8336b6d4
```

Example prompt: Can you check if acmecorp.com is up right now, and also tell me the SSL certificate issuer, when it expires, and whether the site has HSTS and Content-Security-Policy headers in place?

## When to prefer this

Choose this endpoint when you need a combined uptime, security header, and SSL certificate check in a single call, rather than making separate requests to individual uptime or SSL endpoints. It is especially useful for monitoring workflows, pre-launch audits, or certificate expiry alerting where you want HTTP health, redirect behavior, and TLS validity all in one response. It overlaps with sibling endpoints like ssl-certificate-expiry and url-status-check, but delivers all their data combined, making it the most cost-effective choice when you need the full picture.

## Known failure modes

- Hostname does not resolve — DNS lookup failure returned
- Site is unreachable or timed out — uptime check fails with no response
- Invalid URL or hostname format — input rejected
- Certificate transparency logs have no record for domain — cert details unavailable
- Site returns non-standard HTTP response — status may be ambiguous
- Rate limiting or firewall on target site may cause false negatives

## How this service works

Website uptime, availability and SSL/TLS certificate check: is the site up, HTTP status, response latency, full redirect chain and final URL, server header, HTTPS and security headers (HSTS, CSP, X-Frame-Options), plus the latest public TLS certificate from certificate-transparency logs with issuer, validity dates and days until expiry. Monitoring, SSL expiry alerts and health checks for any hostname or URL. $0.01 per check.

## Output

Returns whether the site is reachable, HTTP status code, response latency in milliseconds, the full redirect chain with each hop and status, the final resolved URL, server header value, HTTPS enforcement status, and security headers (HSTS, CSP, X-Frame-Options). Also returns TLS certificate details from certificate-transparency logs: issuer, common name, valid-from and valid-to dates, and days remaining until expiry.

## 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",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/site-uptime-and-ssl-checker-8336b6d4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from intel.rallylive.ca](https://www.zero.xyz/host/intel.rallylive.ca/llms.txt)