Track your B3 investment portfolio, positions, dividends and trading history across all brokers
Connects to B3 (Brazil's central securities depository) to show consolidated investment positions by asset class, net worth, detailed holdings, transaction history, dividends received and pending, and portfolio evolution over time.
Try asking Muse: "Show me my total portfolio value and how much I have in stocks versus real estate funds right now"
Source: Found in the official MCP Registry (io.github.mcp-dir/b3-mcp) · First listed September 25, 2026
Each bar is one check, every 15 minutes. Green means it answered. Last checked 1 h ago.
What Muse can see: It does not ask you to sign in, so it cannot see your accounts. It only sees what Muse sends it from your request.
Before it acts: Read what Muse plans to do before you approve it, and remove the app from Muse when you stop using it.
musedirectory.ai is not part of Meta. More about how Muse handles your information
Not in Muse's Connectors list yet, but Muse can still use it. Copy the request below and paste it into Muse. Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
https://api.mcp.ai/p_b3Not in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
Investidor B3 is a remote MCP server, so any assistant that can add a custom connector by link can use it. Same link, same tools.
In ChatGPT, open Settings, then Connectors (called Apps & Connectors on some accounts).
Under Advanced settings, switch on Developer mode. That is what lets you add a connector by link.
Choose Create, give it a name, paste the link as the MCP server URL, and save. If it needs a sign-in, ChatGPT asks for it here.
Start a chat, open the tools menu, pick the connector, and ask. ChatGPT asks before it runs a tool the first time.
Custom connectors need a paid ChatGPT plan, and on Team, Enterprise and Edu accounts only an admin can add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in ChatGPT
In Claude, open Settings, then Connectors.
Choose Add custom connector, give it a name, and paste the link.
If it needs a sign-in, Claude sends you to it. Then turn the connector on in a chat from the tools menu and ask.
Custom connectors are available on paid Claude plans; on Team and Enterprise accounts an admin may need to add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in Claude
https://api.mcp.ai/p_b3Response time at the last check: 128ms. Worked in 96.8% of checks over 30 days.
Screened, no issues found
Screening looks for known threats and hidden instructions at the time of the check, and runs again weekly and whenever the tool list changes. It cannot see the server's code, so only connect what you need and review what Muse asks to do. How screening works.
b3_list_accountsLista as contas da Área do Investidor B3 conectadas a este install — id, label.b3_get_patrimonioPatrimônio total consolidado na B3 (soma de todas as corretoras) numa data. Retorna { valor, data }.b3_get_carteiraResumo da carteira agrupado por classe de ativo (ações, FIIs, renda fixa, etc.) com valor e percentual de cada grupo.b3_get_posicaoPosição DETALHADA por ativo numa data: ticker (codigoNegociacao), quantidade, preço de fechamento, valor atualizado, ISIN, instituição. Agrupado por tipo de produto. Paginado.b3_list_ativosDrill-down nos ativos de UM tipo de produto (informe `codigoProduto`), com valor e percentual de cada ativo do grupo. Para a posição COMPLETA de todos os ativos, use b3_get_posicao.b3_get_evolucao_patrimonialSérie histórica de evolução do patrimônio na B3.b3_list_negociacoesNegociações (compras/vendas) num intervalo de datas. Paginado por `page`.b3_list_movimentacaoMovimentação de ativos (entradas/saídas: transferências, subscrições, bonificações, etc.) num intervalo. Paginado.b3_list_proventos_a_receberProventos provisionados a receber (dividendos/JCP futuros) numa data de referência.b3_list_proventos_recebidosProventos já recebidos (dividendos/JCP pagos) num intervalo de datas. Paginado.b3_list_ofertas_publicasOfertas públicas (IPOs/subscrições) do investidor num intervalo. Paginado por `page`.b3_get_perfilCadastro/perfil do investidor (identidade da conta B3 conectada).b3_list_instituicoesInstituições (corretoras) vinculadas ao investidor na B3.b3_get_ultima_atualizacaoData/hora da última carga de dados da B3 (a base é D-1). Use para saber quão fresca está a posição.show_versionShow the current MCP platform and adapter versions.report_bugReport a bug, missing feature, or send feedback. Include the conversation array with recent messages for reproduction.connectReturns connection status and URLs. When all providers are connected, returns authenticated:true and empty pending[]. When credentials are missing, returns connect_url for the toolkit and per-install URLs.toolkit_infoReturns the current toolkit state: installed MCPs, their connection status, the accounts connected to each one, and how many catalog tools each exposes.marketplaceThe official mcp.ai marketplace — the in-platform catalog of every MCP/tool, AND the way to run them. Covers capability requests like "find an MCP that does X", "consulta um CPF", "is there a tool for Y". Core flow: action=search discovers MCPs by intent → describe returns one MCauthenticateMCP.AI for IDE agents (Cursor, etc.): log in in the browser, copy the access token. Best: add it to this server's config as a header `Authorization: Bearer <token>` for a permanent, non-expiring connection. Or paste it here for a session-only login: call with { token: "<jwt>" } ahttps://api.mcp.ai/p_b3Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use Investidor B3 to help me. It is a free service with an MCP server at https://api.mcp.ai/p_b3. It does not need an API key. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
At the last check (November 13, 2026, 17:45 UTC) the endpoint was working, answering in 128ms. Over the last 7 days it answered 100% of health checks. It is checked every 15 minutes.
It was screened on September 25, 2026 with the result "screened, no issues found". Screening checks the domain against threat feeds and reads the tools for hidden instructions and requests for passwords or card numbers. It cannot see the server's code, so grant only the access you need.
It exposes 20 tools, including b3_list_accounts, b3_get_patrimonio, b3_get_carteira, b3_get_posicao. For example, you could ask Muse: "Show me my total portfolio value and how much I have in stocks versus real estate funds right now"
This listing was added from public sources (Found in the official MCP Registry (io.github.mcp-dir/b3-mcp)). If you build Investidor B3, claim it to correct the details and get your badge.
Paste this on your site or README. It always shows the latest check.
<a href="https://musedirectory.ai/connector/investidor-b3"><img src="https://musedirectory.ai/badge/investidor-b3.svg" alt="Investidor B3 on musedirectory.ai" width="236" height="40"></a>