Investidor B3

Your consolidated B3 investment portfolio (the central depository): position by asset, net worth, tr

Should I use this

Description quality

76%

Schema completeness

65%

Naming quality

81%

Poisoning risk

80%

Permission match

100%

Protocol compliance

100%

Findings (15)

HIGHTool poisoning patterns detected
MEDIUMTool 'b3_list_ativos' description contains placeholder textin b3_list_ativos
LOWTool 'b3_get_patrimonio' description lacks action verbin b3_get_patrimonio
LOWTool 'b3_get_posicao' description lacks action verbin b3_get_posicao
LOWTool 'b3_get_evolucao_patrimonial' description lacks action verbin b3_get_evolucao_patrimonial
LOWTool 'b3_list_negociacoes' description lacks action verbin b3_list_negociacoes
LOWTool 'b3_list_movimentacao' description lacks action verbin b3_list_movimentacao
LOWTool 'b3_list_proventos_a_receber' description lacks action verbin b3_list_proventos_a_receber
LOWTool 'b3_list_proventos_recebidos' description lacks action verbin b3_list_proventos_recebidos
LOWTool 'b3_list_ofertas_publicas' description lacks action verbin b3_list_ofertas_publicas

Based on automated analysis of tool definitions and protocol compliance.

Context Cost

~3,028Tokens (tool definitions)

~648 BTypical response size

Significant attention impact (2.37% of 128k context)

This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.

Install

One-Click Install

Add this to your `claude_desktop_config.json` file:

{
  "mcpServers": {
    "b3-mcp": {
      "url": "https://api.mcp.ai/p_b3"
    }
  }
}

Remote endpoints

https://api.mcp.ai/p_b3streamable-http

What it can do

Tool inventory

Lista as contas da Área do Investidor B3 conectadas a este install — id, label.

Input Schema

{
  "type": "object",
  "properties": {
    "account": {
      "type": "string"
    }
  },
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Patrimônio total consolidado na B3 (soma de todas as corretoras) numa data. Retorna { valor, data }.

Input Schema

{
  "type": "object",
  "properties": {
    "data": {
      "type": "string"
    },
    "account": {
      "type": "string"
    }
  },
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Resumo da carteira agrupado por classe de ativo (ações, FIIs, renda fixa, etc.) com valor e percentual de cada grupo.

Input Schema

{
  "type": "object",
  "properties": {
    "agrupamento": {
      "type": "number"
    },
    "quantidade": {
      "type": "number"
    },
    "account": {
      "type": "string"
    }
  },
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Posição DETALHADA por ativo numa data: ticker (codigoNegociacao), quantidade, preço de fechamento, valor atualizado, ISIN, instituição. Agrupado por tipo de produto. Paginado.

Input Schema

{
  "type": "object",
  "properties": {
    "data": {
      "type": "string"
    },
    "pagina": {
      "type": "number"
    },
    "account": {
      "type": "string"
    }
  },
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Drill-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.

Input Schema

{
  "type": "object",
  "properties": {
    "codigoProduto": {
      "type": "string"
    },
    "agrupamento": {
      "type": "number"
    },
    "account": {
      "type": "string"
    }
  },
  "required": [
    "codigoProduto"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Série histórica de evolução do patrimônio na B3.

Input Schema

{
  "type": "object",
  "properties": {
    "data": {
      "type": "string"
    },
    "ap": {
      "type": "number"
    },
    "account": {
      "type": "string"
    }
  },
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Negociações (compras/vendas) num intervalo de datas. Paginado por `page`.

Input Schema

{
  "type": "object",
  "properties": {
    "dataInicio": {
      "type": "string"
    },
    "dataFim": {
      "type": "string"
    },
    "page": {
      "type": "number"
    },
    "account": {
      "type": "string"
    }
  },
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Movimentação de ativos (entradas/saídas: transferências, subscrições, bonificações, etc.) num intervalo. Paginado.

Input Schema

{
  "type": "object",
  "properties": {
    "dataInicio": {
      "type": "string"
    },
    "dataFim": {
      "type": "string"
    },
    "pagina": {
      "type": "number"
    },
    "account": {
      "type": "string"
    }
  },
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Proventos provisionados a receber (dividendos/JCP futuros) numa data de referência.

Input Schema

{
  "type": "object",
  "properties": {
    "data": {
      "type": "string"
    },
    "pagina": {
      "type": "number"
    },
    "account": {
      "type": "string"
    }
  },
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Proventos já recebidos (dividendos/JCP pagos) num intervalo de datas. Paginado.

Input Schema

{
  "type": "object",
  "properties": {
    "dataInicio": {
      "type": "string"
    },
    "dataFim": {
      "type": "string"
    },
    "page": {
      "type": "number"
    },
    "account": {
      "type": "string"
    }
  },
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Ofertas públicas (IPOs/subscrições) do investidor num intervalo. Paginado por `page`.

Input Schema

{
  "type": "object",
  "properties": {
    "dataInicio": {
      "type": "string"
    },
    "dataFim": {
      "type": "string"
    },
    "page": {
      "type": "number"
    },
    "account": {
      "type": "string"
    }
  },
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Cadastro/perfil do investidor (identidade da conta B3 conectada).

Input Schema

{
  "type": "object",
  "properties": {
    "account": {
      "type": "string"
    }
  },
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Instituições (corretoras) vinculadas ao investidor na B3.

Input Schema

{
  "type": "object",
  "properties": {
    "account": {
      "type": "string"
    }
  },
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Data/hora da última carga de dados da B3 (a base é D-1). Use para saber quão fresca está a posição.

Input Schema

{
  "type": "object",
  "properties": {
    "account": {
      "type": "string"
    }
  },
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Show the current MCP platform and adapter versions.

Input Schema

{
  "type": "object",
  "properties": {},
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Report a bug, missing feature, or send feedback. Include the conversation array with recent messages for reproduction.

Input Schema

{
  "type": "object",
  "properties": {
    "message": {
      "type": "string"
    },
    "context": {
      "default": "",
      "type": "string"
    },
    "conversation": {
      "default": "[]",
      "type": "string"
    }
  },
  "required": [
    "message"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Returns 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.

Input Schema

{
  "type": "object",
  "properties": {},
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Returns the current toolkit state: installed MCPs, their connection status, the accounts connected to each one, and how many catalog tools each exposes.

Input Schema

{
  "type": "object",
  "properties": {},
  "$schema": "http://json-schema.org/draft-07/schema#"
}

The 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 MCP's full profile (every tool with its id + params, pricing, auth) so you pick the right tool_id → invoke RUNS that tool. KEY: invoke works even when the MCP is NOT installed — it runs the tool pontualmente (one-off), without adding the MCP to the toolkit and without bloating the tool list. If the MCP needs a credential/login, invoke returns a connect link; if it is paid and the wallet is empty, invoke returns a checkout/top-up link (the user opens it, then you retry). Use install only to make an MCP PERMANENT in the active toolkit (its tools then show up natively in future sessions); prefer invoke for a single/occasional use. list_tools lists what is callable right now. subscribe/cancel handle per-MCP billing; report_bug sends feedback; request_mcp asks us to build a NEW MCP when nothing fits. Search/describe flag installed_in_toolkit vs installed_in_workspace. Writes (install/uninstall/subscribe/cancel and the one-off install behind invoke) require workspace owner/admin. It also carries the mcp.ai PROMPT LIBRARY, which is about ready-made prompt TEXT rather than MCPs: search_prompts finds one, get_prompt returns its full text with {{variables}} filled, and publish_prompt saves a prompt and returns a shareable mcp.ai/p/<slug> link that opens without login.

Input Schema

{
  "type": "object",
  "properties": {
    "action": {
      "default": "search",
      "type": "string",
      "enum": [
        "search",
        "describe",
        "install",
        "uninstall",
        "subscribe",
        "cancel",
        "resume",
        "report_bug",
        "request_mcp",
        "list_tools",
        "invoke",
        "search_prompts",
        "get_prompt",
        "publish_prompt"
      ]
    },
    "query": {
      "default": "",
      "type": "string"
    },
    "mcp_id": {
      "default": "",
      "type": "string"
    },
    "limit": {
      "default": 10,
      "type": "number"
    },
    "tier_slug": {
      "default": "",
      "type": "string"
    },
    "immediate": {
      "default": false,
      "type": "boolean"
    },
    "cancel_reason": {
      "type": "string",
      "enum": [
        "too_expensive",
        "missing_features",
        "switched_service",
        "unused",
        "customer_service",
        "too_complex",
        "low_quality",
        "other"
      ]
    },
    "cancel_comment": {
      "default": "",
      "type": "string"
    },
    "message": {
      "default": "",
      "type": "string"
    },
    "report_context": {
      "default": "",
      "type": "string"
    },
    "conversation": {
      "default": "[]",
      "type": "string"
    },
    "request_name": {
      "default": "",
      "type": "string"
    },
    "request_details": {
      "default": "",
      "type": "string"
    },
    "tool_id": {
      "default": "",
      "type": "string"
    },
    "arguments": {
      "default": "{}",
      "type": "string"
    },
    "prompt_slug": {
      "default": "",
      "type": "string"
    },
    "prompt_vars": {
      "default": "{}",
      "type": "string"
    },
    "prompt_category": {
      "default": "",
      "type": "string"
    },
    "prompt_tool": {
      "default": "",
      "type": "string"
    },
    "prompt_title": {
      "default": "",
      "type": "string"
    },
    "prompt_description": {
      "default": "",
      "type": "string"
    },
    "prompt_body": {
      "default": "",
      "type": "string"
    },
    "prompt_targets": {
      "default": [],
      "type": "array",
      "items": {
        "type": "string",
        "enum": [
          "claude",
          "chatgpt",
          "cursor",
          "lovable"
        ]
      }
    }
  },
  "$schema": "http://json-schema.org/draft-07/schema#"
}

MCP.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>" } after the user pastes, or with no args to get the link.

Input Schema

{
  "type": "object",
  "properties": {
    "token": {
      "type": "string"
    }
  },
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Community

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Evidence

Recent observations

Sep 30, 2026, 8:34 AM UTCverifiedversion not recorded20 tools

Sep 24, 2026, 6:32 AM UTCverifiedversion not recorded20 tools

Investidor B3

Quality & Safety

Findings (15)

Context Cost

One-Click Install

Remote endpoints

Tool inventory

Tools (20)

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