# Strale Tax ID Validate

> Strale Tax ID Validate is a paid API for AI agents from api.strale.io, paid per call via x402, $0.0216/call, status unknown (last checked 2026-09-15).

Validates a tax identification number (with optional country code) and returns structured validation result with cryptographic audit record

## Facts

- Endpoint: GET https://api.strale.io/x402/v2/tax-id-validate
- Price: $0.0216/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/strale-tax-id-validate-c98cf0e2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_lL_A7WFWvze7h3qWlqcwe

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-tax-id-validate-c98cf0e2
```

Example prompt: Can you validate the tax ID DE123456789 for me — it's a German company we're about to onboard and I need to confirm it's a legitimate, properly formatted VAT number?

## When to prefer this

Choose this endpoint when you need validated, auditable tax ID verification across 27 countries in a single call, especially when compliance audit trails with cryptographic hashing are required. Prefer over generic regex-based validators when you need actual registration lookups rather than just format checking, and when the result needs to be stored or presented as part of a regulated KYB/KYC workflow.

## Known failure modes

- Missing or empty tax_id parameter returns validation error
- Unrecognizable tax ID format that doesn't match any known country pattern returns invalid result
- Ambiguous tax ID without country_code that cannot be auto-detected may return uncertain or error result
- Network timeout or upstream data source unavailability returns 5xx error
- Invalid ISO country_code provided returns parameter error

## 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 structured JSON object indicating whether the tax ID is valid, the detected or confirmed country, format assessment, and possibly entity registration status. Every response includes a cryptographic audit record with chain hashing for compliance and traceability purposes.

## 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": [
      "tax_id"
     ],
     "properties": {
      "tax_id": {
       "type": "string",
       "description": "Tax identification number (with or without country prefix)"
      },
      "country_code": {
       "type": "string",
       "description": "ISO 2-letter country code (auto-detected from prefix if omitted)"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/strale-tax-id-validate-c98cf0e2/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)