Validate Peru company tax IDs (RUC) against SUNAT's public registry: status, address, verdict.
Connect Remote server
claude mcp add --transport http latam-tax-api https://taxid.halpii.com/mcp --header "Authorization: Bearer <YOUR_API_KEY>"
{
"mcpServers": {
"latam-tax-api": {
"url": "https://taxid.halpii.com/mcp",
"headers": {
"Authorization": "Bearer <YOUR_API_KEY>"
}
}
}
}
{
"servers": {
"latam-tax-api": {
"type": "http",
"url": "https://taxid.halpii.com/mcp",
"headers": {
"Authorization": "Bearer <YOUR_API_KEY>"
}
}
}
}
Settings > Connectors > Add custom connector
URL: https://taxid.halpii.com/mcp
Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools 6 found in our last check
validate_peru_rucValidate a Peruvian RUC (11-digit tax ID) and look up the company in the public SUNAT registry file (Padrón Reducido del RUC). Returns check-digit validity, legal name, taxpayer status (active or not), fiscal-address condition (HABIDO / NO HABIDO), fiscal address with district,…
validate_mexico_rfcCheck a Mexican RFC (12 characters for companies, 13 for individuals): structure, encoded date and SAT check digit, plus whether it appears on SAT's public lists under article 69-B of the Código Fiscal de la Federación (taxpayers presumed or confirmed to invoice non-existent ope…
validate_colombia_nitValidate a Colombian NIT with the DIAN check-digit algorithm and look it up live in the RUES commercial registry kept by the chambers of commerce (Confecámaras open data on datos.gov.co, licensed CC BY-SA 4.0). Returns the computed check digit, legal name, registration status (a…
validate_costa_rica_cedulaCheck a Costa Rican tax ID (cédula física, cédula jurídica, DIMEX or NITE) live against the Ministerio de Hacienda's public taxpayer lookup. Returns the ID type, taxpayer status (registered or not), tax regime, delinquent (moroso) and non-filer (omiso) flags, tax administration…
validate_tax_id_formatCheck the format of a business tax or registry ID offline: structure and, where the issuing authority publishes one, the check digit. Covers EU VAT numbers for all 27 member states (plus Spain NIF, France SIREN/SIRET, Finland Y-tunnus, Sweden organisationsnummer), United Kingdom…
validate_tax_idValidate a business tax or registry ID for any supported country with the deepest check available for it. Norway (organisation number), Finland (Y-tunnus or VAT), France (SIREN, SIRET or VAT), Ireland (CRO company number) and Taiwan (unified business number) are checked live aga…
Headers
| Name | Description |
|---|---|
AuthorizationOptional, secret | Optional. 'Bearer <key>' from POST https://taxid.halpii.com/v1/keys: 100 lookups/day instead of 10. |
Details
| Endpoint | https://taxid.halpii.com/mcp (Streamable HTTP) |
| First published | 14 Nov 2026 |
| Last updated | 14 Nov 2026 |
| Registry name | com.halpii/latam-tax-api |
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