# Strale Phone Type Detection

> Strale Phone Type Detection is a paid API for AI agents from api.strale.io, paid per call via x402, $0.0216/call, status unknown (last checked 2026-09-13).

Detects the type of a phone number (mobile, landline, VoIP, etc.) given a phone number and optional country code hint

## Facts

- Endpoint: GET https://api.strale.io/x402/v2/phone-type-detect
- Price: $0.0216/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/strale-phone-type-detection-9aa450ec
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_aQzEp2lS6-Q4jy0tR7BMD

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 strale-phone-type-detection-9aa450ec
```

Example prompt: Can you check what type of phone number +1 415 555 0198 is — specifically whether it's a mobile, landline, or VoIP line?

## When to prefer this

Choose this endpoint when you need reliable, auditable phone number type classification across 27+ countries with cryptographic audit trails. Ideal for fraud detection pipelines, SMS deliverability checks, and CRM enrichment workflows where you need confidence that the line type determination is independently tested and tamper-evident. Prefer over generic phone validation APIs when you need carrier-level detail and a trust layer suitable for compliance or regulated use cases.

## Known failure modes

- Invalid or unparseable phone number format returns an error
- Country code hint does not match the number's actual country
- Phone number is unallocated or not found in any carrier database
- Rate limit exceeded for the API key or x402 payment account
- Insufficient USDC balance to complete the micropayment transaction

## How this service works

The trust layer for AI agents — 250+ independently tested data capabilities across 27 countries. Execute capabilities via REST, MCP, A2A, or x402 micropayments. Every call returns an audit record with cryptographic chain hashing.

## Output

Returns a classification of the phone number's line type (e.g. mobile, landline, VoIP, toll-free, premium), along with carrier information, country of origin, and an audit record with a cryptographic chain hash for provenance verification.

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "phone_number"
     ],
     "properties": {
      "country_code": {
       "type": "string",
       "description": "ISO 2-letter country code hint (optional)"
      },
      "phone_number": {
       "type": "string",
       "description": "Phone number in any format"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/strale-phone-type-detection-9aa450ec/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.strale.io](https://www.zero.xyz/host/api.strale.io/llms.txt)