big-mcp-b3

Item: big-mcp-b3
Rating: 74
Author: M8ven

MCP server for B3 (Brazilian stock exchange) data, offering tools for real-time quotes, historical prices, dividends, FIIs, fundamental analysis, options, and indices via natural language.

→ danielvm-git/big-mcp-b3 · listed on glama

Is this your MCP?

Claim it to get a verified publisher badge, a free copy of our full audit findings, and direct contact for any high-priority issues we find.

Install from

Glama

M8ven verifies MCPs across every public registry — install directly from whichever one you prefer.

// key findings

🚨

Known vulnerabilities in dependencies: 2 critical, 1 high

Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.

🔐

You'll be asked for 1 credential: BRAPI_TOKEN

These are read from process.env at runtime. Make sure you trust where they’ll be sent.

// known CVEs in dependencies2 critical1 high

Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.

criticalvitest@2.0.0GHSA-5xrq-8626-4rwp

When Vitest UI server is listening, arbitrary file can be read and executed

criticalvitest@2.0.0GHSA-9crc-q9x8-hgqq

Vitest allows Remote Code Execution when accessing a malicious website while Vitest API server is listening

high@modelcontextprotocol/sdk@1.0.0GHSA-w48q-cv73-mx4w

Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default

Depend on this server? Get alerted when its CVEs change.Watch this server free →

// required environment variables

This server reads these from process.env. You'll be asked to provide them before it can run.

configBRAPI_BASE_URL

🔐 secretBRAPI_TOKEN— "": "seu-token-aqui"

configCVM_BASE_URL

configMAX_RETRIES— Não Número máximo de retentativas (padrão: 3)

configREQUEST_TIMEOUT— Não Timeout das requisições em ms (padrão: 30000)

// full audit trail

The full breakdown of what we checked, the deductions that landed, the network hosts, the dependency advisories, and concrete fix guidance is available to verified publishers.

// improvement guidance — verified publishers only

We have 5 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.

// embed badge in your README

[![M8ven Score](https://m8ven.ai/badge/mcp/danielvm-git-big-mcp-b3-ffogf7)](https://m8ven.ai/mcp/danielvm-git-big-mcp-b3-ffogf7)

commit: 65e7957b1ae6589742803ff5fea1756f398da705

code hash: 1fb2180a13ae75978aabea6f506da9ed6ad9be91815af36b599c6550ee60a3e7

verified: 7/25/2026, 8:41:37 AM

view raw JSON →