Compliance & Business Tier 1 Ready POST /v1/eu-id-validator

LEI, EORI & European Tax / Company ID Validator API — Verify Checksums Across EU, UK & US

Validate LEI, EORI, SIREN/SIRET, Steuer-ID, Codice Fiscale, NIF/CIF, NIP, BSN, CRN & EIN checksums. Validate ISO 17442 LEI codes, EU/UK EORI numbers, French SIREN/SIRET, German Steuer-ID, Italian Codice Fiscale, Spanish NIF/CIF, Polish NIP/PESEL, Dutch BSN, UK CRN, and US EIN.

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1. Interactive Sandbox & Sample JSON Output

200 OK · Ready

Editable Request JSON (`POST /v1/eu-id-validator`)

Live 200 OK Response Envelope

{
  "ok": true,
  "data": {
    "input": "5493001KJTIIGC8Y1R12",
    "normalized": "5493001KJTIIGC8Y1R12",
    "formatted": "5493001KJTIIGC8Y1R12",
    "detected_type": "LEI",
    "valid": true,
    "checksum_valid": true,
    "country_code": "GLOBAL",
    "entity_scope": "corporate",
    "metadata": {
      "standard": "ISO 17442",
      "lou_prefix": "5493",
      "lou_issuer": "DTCC / GMEI Utility (Global)",
      "reserved_chars": "00"
    },
    "errors": []
  },
  "meta": {
    "request_id": "req_euid_01",
    "ms": 1
  }
}

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2. Quickstart Code Examples

Full TypeScript & Python SDK →

curl -X POST "https://api.tinplate.dev/v1/eu-id-validator" \
  -H "Content-Type: application/json" \
  -H "X-RapidAPI-Key: YOUR_RAPIDAPI_KEY" \
  -d '{"value":"5493001KJTIIGC8Y1R12","type":"AUTO"}'

import { TinplateClient } from "@tinplate/sdk"; // npm install @tinplate/sdk

const tinplate = new TinplateClient({
  rapidApiKey: process.env.RAPIDAPI_KEY!,
});

const { data, meta } = await tinplate.call("/v1/eu-id-validator", {
  "value": "5493001KJTIIGC8Y1R12",
  "type": "AUTO"
});
console.log(`[${meta.ms} ms]`, data);

import requests

response = requests.post(
    "https://api.tinplate.dev/v1/eu-id-validator",
    headers={
        "Content-Type": "application/json",
        "X-RapidAPI-Key": "YOUR_RAPIDAPI_KEY",
    },
    json={
  "value": "5493001KJTIIGC8Y1R12",
  "type": "AUTO"
}
)
print(response.json())

const response = await fetch("https://api.tinplate.dev/v1/eu-id-validator", {
  method: "POST",
  headers: {
    "Content-Type": "application/json",
    "X-RapidAPI-Key": "YOUR_RAPIDAPI_KEY",
  },
  body: JSON.stringify({
  "value": "5493001KJTIIGC8Y1R12",
  "type": "AUTO"
}),
});
const result = await response.json();
console.log(result);

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "tinplate_eu_id_validator",
    "arguments": {
      "value": "5493001KJTIIGC8Y1R12",
      "type": "AUTO"
    }
  }
}

OpenAPI 3.0.3 Schema Contract

Request Parameters & Response Schema Reference

Request Body Parameters (`POST /v1/eu-id-validator`)

Parameter	Type & Constraints	Description
`value`required	`string` minLen: 2, maxLen: 64	Raw corporate or tax identifier string (LEI, EORI, FR SIREN/SIRET, DE Steuer-ID, IT Codice Fiscale, ES NIF/NIE/CIF, PL NIP/PESEL, NL BSN/RSIN, GB CRN, or US EIN).
`type`optional	`"AUTO" \| "LEI" \| "EORI" \| "FR_SIREN" \| "FR_SIRET" \| "DE_STEUER_ID" \| "IT_CODICE_FISCALE" \| "ES_NIF" \| "PL_NIP" \| "PL_PESEL" \| "NL_BSN" \| "GB_CRN" \| "US_EIN"` default: "AUTO"	Identifier type to validate, or 'AUTO' to classify automatically from structure and country hint.
`country_hint`optional	`string` minLen: 2, maxLen: 2	Optional 2-letter ISO country code ('FR', 'DE', 'IT', 'ES', 'PL', 'NL', 'GB', 'US', 'EU') to disambiguate numeric lengths in AUTO mode.

Response `data` Object Fields (`200 OK`)

Field	Type	Description
`input`	`string`	Field 'input'
`normalized`	`string`	Field 'normalized'
`formatted`	`string`	Field 'formatted'
`detected_type`	`"LEI" \| "EORI" \| "FR_SIREN" \| "FR_SIRET" \| "DE_STEUER_ID" \| "IT_CODICE_FISCALE" \| "ES_NIF" \| "PL_NIP" \| "PL_PESEL" \| "NL_BSN" \| "GB_CRN" \| "US_EIN" \| "UNKNOWN"`	Field 'detected_type'
`valid`	`boolean`	Field 'valid'
`checksum_valid`	`boolean`	Field 'checksum_valid'
`country_code`	`string \| null`	Field 'country_code'
`entity_scope`	`"corporate" \| "individual" \| "corporate_or_individual" \| "unknown"`	Field 'entity_scope'
`metadata`	`object`	Field 'metadata'
`errors`	`string[]`	Field 'errors'

3. What European Corporate Tax, LEI, EORI & National ID Validator API Detects & Validates

ISO 17442 Legal Entity Identifier (LEI) with LOU issuer lookup and ISO 7064 Mod 97-10 check-digit verification
EU27 & UK (GB/XI) EORI customs registration numbers with country-specific length and format rules
France SIREN (9-digit) & SIRET (14-digit) with Luhn mod-10 checksum and INSEE La Poste exception handling
Germany Steuer-ID (ISO 7064 Mod 11,10), Italy Codice Fiscale (mod-26 odd/even table), Spain NIF/DNI/NIE/CIF, Poland NIP/PESEL, Netherlands BSN/RSIN (Elfproef), UK CRN, and US EIN

Honest Engineering Boundaries

4. Known Limitations & Test Verification

Release Version: v1.0.7 · Last Verified / Benchmarked: 14 November 2026 · Latency Note: Sub-millisecond figures measure in-Worker V8 compute time (typical client HTTPS network RTT to the nearest Cloudflare PoP is 15–65 ms) · See Full Portfolio Benchmarks & Corpora →

Validates mathematical check digits, official structure rules, and issuer prefixes deterministically (typically under 5 ms); does not query live government tax registries.
Tested v1.0.4 (14 November 2026).

5. Marketplace Plans & Payload Quotas

Plan	Monthly Price	Included Requests	Rate Limit	Max Request Payload	Best For
BASIC	$0.00 / month	500 / month (hard limit)	10 req / min	64 KB	Evaluation, local development & CI smoke tests
PRO	$9.99 / month	15,000 / month	60 req / min	128 KB	Solo developers & production apps
ULTRA	$29.99 / month	100,000 / month	300 req / min	256 KB	Growing SaaS & multi-agent pipelines
MEGA	$79.99 / month	500,000 / month	1,000 req / min	256 KB	High-volume enterprise workloads

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6. Frequently Asked Questions

How does this complement 05-eu-vat-iban and 23-hu-business-validator?

05-eu-vat-iban covers EU VAT & IBAN/BIC, and 23-hu-business-validator covers Hungarian NAV/Giro IDs. 33-eu-id-validator adds global LEI, EU/UK EORI, and national TIN/company numbers for DE, FR, IT, ES, PL, NL, GB, and US.

Can it auto-detect the identifier type?

Yes, leave type as 'AUTO' (and optionally pass country_hint such as 'DE', 'FR', 'IT', 'ES', 'PL', 'NL', 'GB', or 'US') to classify and validate automatically.

Does it verify the official Italian Codice Fiscale and German Steuer-ID check algorithms?

Yes, it implements the full Agenzia delle Entrate odd/even mod-26 character table for Codice Fiscale and the BZSt ISO 7064 Mod 11,10 + digit-multiplicity rule for German Steuer-ID.

Zero Payload Logging

7. Data Handling, Privacy & Marketplace Proxy Disclosure

Tax and corporate identifiers are verified in memory and discarded immediately after the response.

Worker Zero-Logging Guarantee: Cloudflare Workers Observability and invocation logging are disabled in configuration (observability.enabled = false, head_sampling_rate = 0, invocation_logs = false). Payloads are processed strictly in volatile V8 memory and never logged or stored by Tinplate.

Marketplace Proxies vs. Direct Bearer Key: Requests sent via RapidAPI or Zyla API Hub pass through those marketplaces' proxy infrastructure (subject to their respective privacy policies). Security-sensitive workloads requiring end-to-end zero-intermediary processing can connect directly to https://api.tinplate.dev using a Direct Bearer Key (Authorization: Bearer <API_KEY>). Read our full Privacy Notice and OpenAPI 3.0.3 JSON Schema.