MCP server · Finance and crypto

Bolsai MCP server

Ask your AI about Brazilian stocks, dividends, FIIs and macro rates like Selic and IPCA.

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This is a small helper that connects your AI assistant to Brazilian market data from B3, CVM and BCB. You can ask about stock prices, dividends, company numbers and rates like Selic, IPCA and CDI, and get a clear answer in the chat. It is handy if you follow Brazilian stocks or funds and want quick facts without opening several websites.

What is an MCP server? The 30-second version

On its own, your AI can only chat with you using what it already knows. An MCP server is a small helper program that gives your AI a new skill or a connection to an outside service. This one connects your AI to Bolsai, which gathers Brazilian market data from B3, CVM and BCB. So when you ask about a stock or a rate, your AI can look it up there and bring the answer back to you.

What this MCP server does

You ask your AI a question in normal words, like the price of PETR4 or the current Selic rate. Your AI passes that question to this helper. The helper talks to the Bolsai service, which holds data on Brazilian stocks, FIIs, dividends and macro indicators. The service sends the numbers back, and your AI shows them to you in the chat, often as a small table or a short list.

Flow diagram: you ask your AI “What's PETR4 trading at?”, the Bolsai MCP server connects it to Bolsai, and you get back answers in your chat.

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What you can do with it

Check the current price and daily change of a Brazilian stock
Compare up to five stocks side by side on things like P/L, ROE and dividend yield
See the dividends a company paid and its dividend yield
Look up FII details and distributions
Read macro indicators like Selic, IPCA, CDI and USD/BRL
Search for companies by name or sector
Filter stocks by metrics such as dividend yield above 8%

Try asking your AI

“What's PETR4 trading at?”
“Compare PETR4 vs VALE3 vs ITUB4”
“What dividends did BBDC4 pay?”
“What's the current SELIC rate?”

What it gives back to you

You get answers in the chat: prices, percentage changes, 52-week ranges, comparison tables, dividend lists, FII details and macro rates. Some answers come as short tables, like a side-by-side comparison of two or three stocks. Others are simple lines, like the current Selic or the price of one share. It is read-only, so it does not buy, sell or change anything.

Before you start

What you need

A free API key from usebolsai.com (a kind of password for apps; the site gives you one)
Python installed on your computer, since the package is installed with pip
The Claude desktop app or Claude Code, where you add the server

Good to know

The free API key allows 200 requests per day, and some tools like history, dividends, financials and macro need a paid Pro plan.

Install it with your AI

Add Bolsai MCP server to your AI, no technical skills needed

You don't install anything by hand. You copy one prompt, paste it into an AI that can work on your computer, and it checks, installs and connects the server for you, asking you when it needs something.

Sign in to get the install prompt

Members get a ready-made prompt that lets the Claude desktop app check Bolsai MCP server, install it and connect it for them, step by step. You don't need any technical skills: you copy, paste and answer a few questions. Your connected AI can also find and install any of the 4,066 MCP servers here for you.