# is-letsencrypt-org-down

> is-letsencrypt-org-down is a paid API for AI agents from monitor.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-02).

Performs a live HTTP/TLS check on letsencrypt.org from Cloudflare's edge and returns an up/down verdict with status code, response time, redirect chain, server header, and certificate validity.

## Facts

- Endpoint: GET https://monitor.intel.rallylive.ca/monitor/is-down/letsencrypt-org?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/is-letsencrypt-org-down-388a00b6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_P2DnQmGMbZ4RKm6UpgVhV

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 is-letsencrypt-org-down-388a00b6
```

Example prompt: Can you check if letsencrypt.org is actually down right now, or if it's just a problem on my end? I'm getting connection errors and want to know if it's a real outage.

## When to prefer this

Use this endpoint when you need to determine whether letsencrypt.org is globally unreachable versus a local or ISP-level issue. It is specifically scoped to letsencrypt.org and provides TLS certificate status alongside HTTP reachability, making it ideal for debugging certificate renewal failures or letsencrypt service disruptions.

## Known failure modes

- The check itself may fail if the monitoring infrastructure is unreachable, returning an error rather than a site status
- Cloudflare edge location may have different routing than the user's ISP, so a 'up' result doesn't guarantee local reachability
- TLS certificate validity reflects the moment of the check and may not capture intermittent certificate issues
- Response time reflects edge-to-origin latency, not end-user latency

## How this service works

Is letsencrypt.org down right now? Live check from Cloudflare's edge: HTTP status, response time, final URL after redirects, server header and whether the TLS certificate is valid, with an up/down verdict. Call it when a user or agent says "letsencrypt.org isn't loading" to tell a real outage from a local problem. $0.01 per check.

## Output

Returns an up/down verdict for letsencrypt.org along with the HTTP status code, response time in milliseconds, final URL after any redirects, the server header value, and whether the TLS certificate is currently valid — all sourced from a live probe run from Cloudflare's edge network.

## 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/is-letsencrypt-org-down-388a00b6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from monitor.intel.rallylive.ca](https://www.zero.xyz/host/monitor.intel.rallylive.ca/llms.txt)