# carf — MCP server on mcp.ai
> Looks up proceedings of a person or company at the Administrative Board of Tax Appeals (CARF) from the CPF or CNPJ. Platform-hosted, no credentials, pay per query with prepaid credit.

By: mcp.ai · official
Page: https://mcp.ai/carf

## Connect (MCP protocol)
Remote MCP endpoint (HTTP, streamable): https://api.mcp.ai/p_carf?ms=1787191740000
Add it as a custom/remote MCP connector, then authenticate when prompted.

## REST API (no MCP client required)
Every tool is also a REST endpoint, authed with a workspace API key.
Discover: GET https://api.mcp.ai/api/carf/_endpoints   # public; lists every endpoint
Call:     POST https://api.mcp.ai/api/carf/<endpoint>
  Authorization: Bearer sk_live_…   # create one at https://mcp.ai/settings/api-keys
  Content-Type: application/json
  Body: { …args }   →   { "ok": true, "tool": "<id>", "result": { … } }

## Developer docs
How to use (MCP or REST), markdown: https://mcp.ai/carf/skill.md
Postman collection (v2.1): https://mcp.ai/carf/postman.json

## Tools
- carf_consultar(CPF: string, CNPJ: string, completo?: boolean) — Consulta processos de uma pessoa ou empresa no Conselho Administrativo de Recursos Fiscais (CARF) a partir do CPF ou CNPJ. Hospedado pela plataforma, sem credenciais, pague por consulta com crédito pr

## Example prompts
- "Does CNPJ 12345678000190 have a CARF proceeding?"
- "CARF proceedings for CPF 12345678909"

## Links
Docs: https://mcp.ai/docs/mcps/carf
Website: https://mcp.ai/mcps/carf