# Brazilayer CNPJ Partners & Shareholders Lookup

> Brazilayer CNPJ Partners & Shareholders Lookup is a paid API for AI agents from api.brazilayer.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Returns the list of partners and shareholders (socios) of a Brazilian company from the official Receita Federal CNPJ registry, including names, types, roles, and entry dates.

## Facts

- Endpoint: GET https://api.brazilayer.com/v1/cnpj/empresa/:cnpj/socios
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/brazilayer-cnpj-partners-shareholders-lookup-2e96d343
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_LKgsADhGeImIax8ITlQeu

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 brazilayer-cnpj-partners-shareholders-lookup-2e96d343
```

Example prompt: Can you pull the partners and shareholders listed in the Receita Federal registry for the Brazilian company with CNPJ 00.000.000/0001-91? I need their names, roles, and entry dates for a KYB check.

## When to prefer this

Use this endpoint when you need to enumerate the specific partners, shareholders, or owners of a known Brazilian company identified by CNPJ. Prefer this over the full bundle endpoint when you only need ownership data (not full registration details) to minimize cost. Prefer over a reverse-lookup endpoint when you are starting from a company CNPJ rather than a person's identity.

## Known failure modes

- Invalid or malformed CNPJ returns a 400 or validation error
- CNPJ not found in Receita Federal registry returns 404 or empty result
- Company exists but has no registered partners (e.g. government entities) returns empty socios list
- Temporary upstream Receita Federal unavailability may cause 503 or timeout
- Rate limiting may apply if called in rapid succession

## How this service works

Partners and shareholders (socios) of a Brazilian company from the official Receita Federal CNPJ registry: partner name, type (individual/company/foreign), masked tax document (CPF comes pre-masked from the government source), role/qualification, entry date and age bracket. Useful for KYB and ownership checks. Free sample, no payment: https://api.brazilayer.com/v1/cnpj/amostra

## Output

A list of partners/shareholders (socios) of the specified Brazilian company, each with partner name, type (individual, company, or foreign entity), masked CPF or tax document, qualification/role code and description, entry date into the partnership, and age bracket. Data sourced directly from the official Receita Federal CNPJ registry.

## 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"
     ],
     "type": "string"
    },
    "pathParams": {
     "cnpj": {
      "type": "string",
      "description": "Brazilian company tax ID (CNPJ), 14 digits, with or without punctuation (e.g. 00000000000191 or 00.000.000/0001-91)"
     },
     "type": "object"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/brazilayer-cnpj-partners-shareholders-lookup-2e96d343/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.brazilayer.com](https://www.zero.xyz/host/api.brazilayer.com/llms.txt)