# is-port-161-open

> is-port-161-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 2026-10-13).

Checks whether TCP port 161 (SNMP) is open, closed, or filtered on a given host by probing from Cloudflare's edge network

## Facts

- Endpoint: GET https://ip.intel.rallylive.ca/ip/port/161?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/is-port-161-open-7935a9e2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5biur7KZdvkh6ek0WxXC2

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-161-open-7935a9e2
```

Example prompt: Can you check whether SNMP port 161 is open or closed on 203.0.113.45 — I want to know if it's exposed to the internet without running a full scanner.

## When to prefer this

Use this endpoint when you need a quick, lightweight check of whether SNMP (port 161) is publicly reachable on a host without deploying a full port scanner. Ideal for security audits, pre-deployment checks, and ongoing exposure monitoring. Note the Cloudflare-fronted host limitation — for those hosts, results will be inconclusive.

## Known failure modes

- Host behind Cloudflare returns inconclusive result — edge answers instead of origin
- Firewalled or filtered port may return 'filtered' with timeout rather than definitive closed
- Invalid or unresolvable hostname returns an error
- Rate limiting or network issues at Cloudflare's edge may cause transient failures

## How this service works

Is TCP port 161 (SNMP) 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 SNMP without running a scanner. $0.01 per check.

## Output

Returns whether TCP port 161 is open, closed, or filtered on the target host, along with the connect time in milliseconds. Hosts behind Cloudflare are flagged as inconclusive because Cloudflare's edge intercepts the connection before it reaches 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-161-open-7935a9e2/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)