API Documentation

Use the API to query Chilean business information up to February 2026.

🔑API Key Required

Due to high demand, the API now requires authentication. To get your API Key, make a contribution at Buy Me a Coffee and you will receive your key by email.

Authentication

All API requests require a x-api-key header with your access key.

x-api-key: your-api-key

Query Endpoint

GET /api/company-info?rut=XXXXXXXX

This endpoint allows you to get detailed information about Chilean companies using their RUT.

Parameters

Parameter	Type	Description
`rut`	string	Company RUT without dots or hyphen

Response

{
  "code": 77073851,
  "verification_digit": "2",
  "business_name": "STARLINK CHILE SPA",
  "valid_from_date": "26-09-2019",
  "valid_until_date": null,
  "activities": [
    {
      "activity_code": "619090",
      "activity_description": "OTRAS ACTIVIDADES DE TELECOMUNICACIONES N.C.P.",
      "activity_date": "26-09-2019",
      "iva_affects": true,
      "tax_category": "1"
    }
  ],
  "addresses": [
    {
      "validity": true,
      "address_date": "2020-11-02",
      "address_type": "DOMICILIO",
      "street": "AV A VESPUCIO SUR",
      "street_number": "100",
      "block": null,
      "apartment": "1101",
      "neighborhood": null,
      "city": "SANTIAGO",
      "district": "LAS CONDES",
      "region": "XIII REGION METROPOLITANA"
    }
  ]
}

Status Codes

Code	Description
200	Success
400	Invalid or missing RUT
401	Invalid or missing API key
429	Daily request limit exceeded (100 per API key per UTC day)
404	Company not found
500	Internal server error

Usage Example

curl -X GET "https://ruts.info/api/company-info?rut=770738512" \
     -H "x-api-key: your-api-key" \
     -H "Accept: application/json"