# SignalDesk AI CIDR Info

> SignalDesk AI CIDR Info is a paid API for AI agents from x402-agent.kariguetoazul.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-13).

Computes subnet details for an IPv4 CIDR block, returning network address, broadcast, mask, usable host range, and address counts.

## Facts

- Endpoint: POST https://x402-agent.kariguetoazul.workers.dev/api/network/cidr-info?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/signaldesk-ai-cidr-info-2f66b7db
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ZYls2fQx5yKcaaIajRejE

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 signaldesk-ai-cidr-info-2f66b7db -d '<json body>'
```

Example prompt: What are the network address, broadcast address, subnet mask, and number of usable hosts for the CIDR block 192.168.1.0/24?

## When to prefer this

Choose this endpoint when you need fast, deterministic subnet math for a single IPv4 CIDR block — especially in automated infrastructure workflows, network documentation pipelines, or security tooling where you need precise host range, mask, and broadcast details without spinning up a local subnet calculator. It is metered at $0.001 USDC via x402, making it suitable for low-volume programmatic lookups in agent workflows.

## Known failure modes

- Invalid or malformed CIDR string returns an error (e.g. missing prefix, out-of-range prefix length)
- IPv6 CIDRs are not supported — only IPv4
- CIDR string exceeding 18 characters is rejected by schema validation
- Network errors or Cloudflare Worker downtime return HTTP 5xx
- Missing or empty `cidr` field returns a validation error

## How this service works

Evidence-backed autonomous AI jobs and paid data tools. Queue/D1/cron run outside the chat; free quotas and bounded execution apply.

## Output

Returns a JSON object with the subnet mask (dotted-decimal), prefix length (integer), network address, broadcast address, first usable host IP, last usable host IP, number of usable hosts, and total address count for the given CIDR block.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "cidr": {
   "type": "string",
   "maxLength": 18,
   "description": "IPv4 CIDR."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "mask": "255.255.255.0",
  "prefix": 24,
  "network": "192.168.1.0",
  "broadcast": "192.168.1.255",
  "last_host": "192.168.1.254",
  "first_host": "192.168.1.1",
  "usable_hosts": 254,
  "total_addresses": 256
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/signaldesk-ai-cidr-info-2f66b7db/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-agent.kariguetoazul.workers.dev](https://www.zero.xyz/host/x402-agent.kariguetoazul.workers.dev/llms.txt)