MCP BACEN
Provides tools to query Brazilian Central Bank public data, including SGS time series and PTAX exchange rates.
README
MCP BACEN
Servidor MCP remoto para dados publicos do Banco Central do Brasil, nos mesmos moldes do projeto mcp-sidra, preparado para virar um app do ChatGPT com Apps SDK.
Stack
- Node.js + TypeScript + ESM
@modelcontextprotocol/sdkcom transporte Streamable HTTP em/mcp@modelcontextprotocol/ext-appspara recurso UI opcional do Apps SDK- Zod para schemas de entrada e saida
- Vitest para testes dos builders de URL e normalizacao
Ferramentas MCP
searchefetch: compativeis com o padrao data-only/company knowledge do ChatGPT.list_sgs_series: busca no catalogo local de codigos SGS comuns.get_sgs_series: consulta series temporais do SGS por codigo, comlastoustartDate/endDate.list_ptax_currencies: lista moedas disponiveis no endpoint PTAXMoedas.get_ptax_dollar_quotes: consulta cotacoes PTAX do dolar por dia ou periodo.get_ptax_currency_quotes: consulta cotacoes PTAX de outras moedas por dia ou periodo.
Todas as ferramentas sao read-only.
Desenvolvimento
npm install
npm run dev
O MCP fica disponivel em:
http://localhost:8787/mcp
Teste com o MCP Inspector:
npm run inspect
Exemplos de prompts
Liste as series SGS relacionadas a Selic.
Busque os ultimos 5 valores da serie SGS 11.
Qual foi a PTAX de fechamento do dolar em 2026-06-16?
Liste as moedas disponiveis na PTAX e depois consulte EUR em junho de 2026.
ChatGPT App
Para conectar no ChatGPT durante desenvolvimento:
- Rode
npm run dev. - Exponha a porta com um tunel HTTPS, por exemplo
ngrok http 8787. - Em ChatGPT, ative developer mode e crie um app apontando para
https://<subdomain>.ngrok.app/mcp.
Para submissao, defina APP_DOMAIN com o dominio HTTPS final do app. O widget e opcional, mas este projeto ja inclui um recurso Apps SDK simples para renderizar resultados tabulares.
Fontes de dados
- SGS:
https://api.bcb.gov.br/dados/serie/bcdata.sgs.{codigo}/dados?formato=json - PTAX:
https://olinda.bcb.gov.br/olinda/servico/PTAX/versao/v1/odata - Dados abertos BCB:
https://dadosabertos.bcb.gov.br
Observacoes:
- O endpoint SGS
ultimos/{N}aceita no maximo 20 valores. - Consultas SGS com
dataInicialedataFinaldevem ser divididas em janelas de ate 10 anos. - PTAX usa sintaxe OData, por exemplo
CotacaoDolarDia(dataCotacao=@dataCotacao)?@dataCotacao='06-16-2026'&$format=json.
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