# is-port-993-open

> is-port-993-open is a paid API for AI agents from ip.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-12).

Checks whether TCP port 993 (IMAPS) is open, closed, or filtered on a given host by attempting a connection from Cloudflare's edge network.

## Facts

- Endpoint: GET https://ip.intel.rallylive.ca/ip/port/993?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/is-port-993-open-1a70f14e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ERs8FsXDN5cr_WKpP-LSx

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-port-993-open-1a70f14e
```

Example prompt: Can you check if port 993 (IMAPS) is open on mail.example.com? I want to know whether secure IMAP is reachable from the internet without running a scanner.

## When to prefer this

Use this endpoint when you need a quick, external-perspective check of IMAPS (port 993) reachability without deploying your own scanner or running nmap. It is ideal for verifying email server exposure, confirming firewall rules took effect, or monitoring IMAPS availability from a neutral vantage point. Not suitable for Cloudflare-proxied hosts where the result will be inconclusive.

## Known failure modes

- Cloudflare-fronted hosts return inconclusive — the edge answers the TCP handshake regardless of origin state
- Filtered ports (firewall drop) may time out and return 'filtered' rather than definitive open/closed
- Hosts with very high latency may appear filtered due to timeout thresholds
- Invalid or unresolvable hostnames will return an error rather than a port status

## How this service works

Is TCP port 993 (IMAPS) open on a host? Attempts a connection from Cloudflare's edge and reports open/closed/filtered with the connect time; Cloudflare-fronted hosts are reported as inconclusive because their edge answers for them. Exposure checks for IMAPS without running a scanner. $0.01 per check.

## Output

Returns whether TCP port 993 is open, closed, or filtered on the target host, along with the connection time in milliseconds. If the host is Cloudflare-fronted, the result is marked inconclusive because Cloudflare's edge answers on behalf of the origin.

## 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-port-993-open-1a70f14e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ip.intel.rallylive.ca](https://www.zero.xyz/host/ip.intel.rallylive.ca/llms.txt)