Investidor B3

by mcp-dir · remote · no sign-in to list tools · v0.1.0 · published by GitHub user mcp-dir

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

Changes · 3

Compare Registry entry

20 tools: 3 change things and 17 only read.

Scanned Oct 21, 2026

Deletes or cancels0Claude Code: deny
Can't be undone0Claude Code: ask
Changes things3Claude Code: ask: see these tools
Only reads17Claude Code: allow: see these tools

2 checks matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http b3 https://api.mcp.ai/p_b3

Findings

Matches of fixed checks, with the text they matched.

2 info

Infoconnect
The description mentions "credentials".
Matched text
description: "...nticated:true and empty pending[]. When credentials are missing, returns connect_url for th..."
What this check looks for
Infomarketplace
The description mentions "credential".
Matched text
description: "...ating the tool list. If the MCP needs a credential/login, invoke returns a connect link; i..."
What this check looks for

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

20 tools

Changes things 3Creates or changes something that can be changed back.Claude Code: ask

authenticateMCP.AI for IDE agents (Cursor, etc.): log in in the browser, copy the access token.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it
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.
Annotations the server declares
- title: Authenticate
- readOnlyHint: false
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
marketplaceThe official mcp.ai marketplace — the in-platform catalog of every MCP/tool, AND the way to run them.1 finding
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Findings
- Info
  The description mentions "credential".
  Matched text
  description: "...ating the tool list. If the MCP needs a credential/login, invoke returns a connect link; i..."
  What this check looks for
Description, as the server wrote it
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.
Annotations the server declares
- title: Marketplace
- readOnlyHint: false
- destructiveHint: false
- idempotentHint: false
- openWorldHint: true
report_bugReport a bug, missing feature, or send feedback.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it
Report a bug, missing feature, or send feedback. Include the conversation array with recent messages for reproduction.
Annotations the server declares
- title: Report Bug
- readOnlyHint: false
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false

Only reads 17Looks things up and changes nothing.Claude Code: allow

b3_get_carteiraResumo da carteira agrupado por classe de ativo (ações, FIIs, renda fixa, etc.) com valor e percentual de cada grupo.No findings
Why it is in this group
- The name "b3_get_carteira" says "get": a word for reading.
Description, as the server wrote it
Resumo da carteira agrupado por classe de ativo (ações, FIIs, renda fixa, etc.) com valor e percentual de cada grupo.
Annotations the server declares
- title: b3_get_carteira
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
b3_get_evolucao_patrimonialSérie histórica de evolução do patrimônio na B3.No findings
Why it is in this group
- The name "b3_get_evolucao_patrimonial" says "get": a word for reading.
Description, as the server wrote it
Série histórica de evolução do patrimônio na B3.
Annotations the server declares
- title: b3_get_evolucao_patrimonial
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
b3_get_patrimonioPatrimônio total consolidado na B3 (soma de todas as corretoras) numa data.No findings
Why it is in this group
- The name "b3_get_patrimonio" says "get": a word for reading.
Description, as the server wrote it
Patrimônio total consolidado na B3 (soma de todas as corretoras) numa data. Retorna { valor, data }.
Annotations the server declares
- title: b3_get_patrimonio
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
b3_get_perfilCadastro/perfil do investidor (identidade da conta B3 conectada).No findings
Why it is in this group
- The name "b3_get_perfil" says "get": a word for reading.
Description, as the server wrote it
Cadastro/perfil do investidor (identidade da conta B3 conectada).
Annotations the server declares
- title: b3_get_perfil
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
b3_get_posicaoPosição DETALHADA por ativo numa data: ticker (codigoNegociacao), quantidade, preço de fechamento, valor atualizado, ISIN, instituição.No findings
Why it is in this group
- The name "b3_get_posicao" says "get": a word for reading.
Description, as the server wrote it
Posição DETALHADA por ativo numa data: ticker (codigoNegociacao), quantidade, preço de fechamento, valor atualizado, ISIN, instituição. Agrupado por tipo de produto. Paginado.
Annotations the server declares
- title: b3_get_posicao
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
b3_get_ultima_atualizacaoData/hora da última carga de dados da B3 (a base é D-1).No findings
Why it is in this group
- The name "b3_get_ultima_atualizacao" says "get": a word for reading.
Description, as the server wrote it
Data/hora da última carga de dados da B3 (a base é D-1). Use para saber quão fresca está a posição.
Annotations the server declares
- title: b3_get_ultima_atualizacao
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
b3_list_accountsLista as contas da Área do Investidor B3 conectadas a este install — id, label.No findings
Why it is in this group
- The name "b3_list_accounts" says "list": a word for reading.
Description, as the server wrote it
Lista as contas da Área do Investidor B3 conectadas a este install — id, label.
Annotations the server declares
- title: b3_list_accounts
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
b3_list_ativosDrill-down nos ativos de UM tipo de produto (informe `codigoProduto`), com valor e percentual de cada ativo do grupo.No findings
Why it is in this group
- The name "b3_list_ativos" says "list": a word for reading.
Description, as the server wrote it
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.
Annotations the server declares
- title: b3_list_ativos
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
b3_list_instituicoesInstituições (corretoras) vinculadas ao investidor na B3.No findings
Why it is in this group
- The name "b3_list_instituicoes" says "list": a word for reading.
Description, as the server wrote it
Instituições (corretoras) vinculadas ao investidor na B3.
Annotations the server declares
- title: b3_list_instituicoes
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
b3_list_movimentacaoMovimentação de ativos (entradas/saídas: transferências, subscrições, bonificações, etc.) num intervalo.No findings
Why it is in this group
- The name "b3_list_movimentacao" says "list": a word for reading.
Description, as the server wrote it
Movimentação de ativos (entradas/saídas: transferências, subscrições, bonificações, etc.) num intervalo. Paginado.
Annotations the server declares
- title: b3_list_movimentacao
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
b3_list_negociacoesNegociações (compras/vendas) num intervalo de datas.No findings
Why it is in this group
- The name "b3_list_negociacoes" says "list": a word for reading.
Description, as the server wrote it
Negociações (compras/vendas) num intervalo de datas. Paginado por `page`.
Annotations the server declares
- title: b3_list_negociacoes
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
b3_list_ofertas_publicasOfertas públicas (IPOs/subscrições) do investidor num intervalo.No findings
Why it is in this group
- The name "b3_list_ofertas_publicas" says "list": a word for reading.
Description, as the server wrote it
Ofertas públicas (IPOs/subscrições) do investidor num intervalo. Paginado por `page`.
Annotations the server declares
- title: b3_list_ofertas_publicas
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
b3_list_proventos_a_receberProventos provisionados a receber (dividendos/JCP futuros) numa data de referência.No findings
Why it is in this group
- The name "b3_list_proventos_a_receber" says "list": a word for reading.
Description, as the server wrote it
Proventos provisionados a receber (dividendos/JCP futuros) numa data de referência.
Annotations the server declares
- title: b3_list_proventos_a_receber
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
b3_list_proventos_recebidosProventos já recebidos (dividendos/JCP pagos) num intervalo de datas.No findings
Why it is in this group
- The name "b3_list_proventos_recebidos" says "list": a word for reading.
Description, as the server wrote it
Proventos já recebidos (dividendos/JCP pagos) num intervalo de datas. Paginado.
Annotations the server declares
- title: b3_list_proventos_recebidos
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
connectReturns connection status and URLs.1 finding
Why it is in this group
- The description's first verb is "return": a word for reading.
Findings
- Info
  The description mentions "credentials".
  Matched text
  description: "...nticated:true and empty pending[]. When credentials are missing, returns connect_url for th..."
  What this check looks for
Description, as the server wrote it
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.
Annotations the server declares
- title: Connection Status
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
show_versionShow the current MCP platform and adapter versions.No findings
Why it is in this group
- The name "show_version" says "show": a word for reading.
Description, as the server wrote it
Show the current MCP platform and adapter versions.
Annotations the server declares
- title: Show Version
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
toolkit_infoReturns the current toolkit state: installed MCPs, their connection status, the accounts connected to each one, and how many catalog tools each exposes.No findings
Why it is in this group
- The description's first verb is "return": a word for reading.
Description, as the server wrote it
Returns the current toolkit state: installed MCPs, their connection status, the accounts connected to each one, and how many catalog tools each exposes.
Annotations the server declares
- title: Toolkit Info
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 0.1.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http b3 https://api.mcp.ai/p_b3

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json

{
  "permissions": {
    "allow": [
      "mcp__b3__b3_list_accounts",
      "mcp__b3__b3_get_patrimonio",
      "mcp__b3__b3_get_carteira",
      "mcp__b3__b3_get_posicao",
      "mcp__b3__b3_list_ativos",
      "mcp__b3__b3_get_evolucao_patrimonial",
      "mcp__b3__b3_list_negociacoes",
      "mcp__b3__b3_list_movimentacao",
      "mcp__b3__b3_list_proventos_a_receber",
      "mcp__b3__b3_list_proventos_recebidos",
      "mcp__b3__b3_list_ofertas_publicas",
      "mcp__b3__b3_get_perfil",
      "mcp__b3__b3_list_instituicoes",
      "mcp__b3__b3_get_ultima_atualizacao",
      "mcp__b3__show_version",
      "mcp__b3__connect",
      "mcp__b3__toolkit_info"
    ],
    "ask": [
      "mcp__b3__report_bug",
      "mcp__b3__marketplace",
      "mcp__b3__authenticate"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as b3. Review it before you use it.

Keep track

Get told when this server's tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/io.github.mcp-dir/b3-mcp/changes.xml

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3 of these tools change something. Run those as governed actions.

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Source: MCP Registry · repository. Synced Oct 21, 2026, 18:39 UTC.

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