MCP servers for trading and investing: 6 compared

Written by the Tactfolio research teamPublished 6 min read

An MCP server lets an AI assistant like Claude, ChatGPT or Cursor use an outside service. MCP stands for Model Context Protocol, an open standard for connecting assistants to tools. For investing, MCP servers come in three kinds. Some connect the assistant to your broker account. Some let it build and backtest strategies. Some only feed it market data. We compared six official ones, made by the companies that run the service. We make Tactfolio, so read our notes with that in mind. Every fact about the others comes from their own pages, checked on October 25, 2026.

The short answer#

  • To build and backtest strategies without code, connect Tactfolio. Your assistant builds long-only rules for US stocks and ETFs, runs the backtest, and saves the strategy. It can’t trade.
  • To backtest coded algorithms, connect QuantConnect. It needs a paid agent node.
  • To let an assistant place orders, Alpaca’s server can trade in your Alpaca account. It runs on your own computer with your API keys, on paper by default.
  • To ask about an account you already hold, Interactive Brokers’ connector analyzes your portfolio and drafts trades. You place each order yourself.
  • For market data only, Massive and Alpha Vantage both run official servers.

The 6 servers at a glance#

ServerWhat the assistant can doPlaces trades?How you connect
TactfolioBuild, backtest and save long-only strategiesNoRemote, sign in with OAuth, no keys
QuantConnectWrite, backtest and optimize coded algorithms, and run live onesThrough QuantConnect’s live tradingNeeds a paid agent node
AlpacaQuotes, positions and orders for stocks, ETFs, options and cryptoYes, paper by defaultOn your computer, with API keys
Interactive BrokersAnalyze your portfolio, research, draft tradesNo, you place each orderRemote, sign in through IBKR
MassiveMarket data, fundamentals and newsNoHosted or local, with an API key
Alpha VantageMarket dataNoRemote, with an API key

Tactfolio#

Tactfolio’s MCP server lets your assistant work in your Tactfolio account. It can build a strategy from the same blocks as the visual builder and check it. It can run a backtest with trading costs counted, compare variations, and save the result. It can’t publish a strategy, change your settings, or trade. You start a saved strategy on paper or in your own Alpaca account yourself.

You connect at https://tactfolio.com/mcp and sign in with OAuth, so you never paste a key into the assistant. Use Tactfolio from your AI assistant has setup steps for Claude, ChatGPT, Claude Code, Codex, Cursor, VS Code, Gemini CLI and OpenCode. Strategies hold US-listed stocks and ETFs, long only, on daily prices. Crypto strategies run on Hyperliquid perps and are backtest and paper or testnet only. Every feature is free until billing opens.

QuantConnect#

QuantConnect is a platform for coded algorithms in Python or C#. Its MCP server is “a bridge that connects a Large Language Model (LLM) to the QuantConnect API.” Its tools cover projects, files, compiling, backtests, optimizations, live trading and research notebooks. QuantConnect says your organization “must have a paid agent node” to use the remote server. The free node can’t connect. Read Tactfolio vs QuantConnect for how the two compare.

Alpaca#

Alpaca’s official MCP server connects an assistant to Alpaca’s Trading API. You can ask in plain words for quotes, your positions, or an order for stocks, ETFs, options or crypto. It runs on your own computer, started with a tool called uvx, and reads your API keys from your assistant’s settings. Paper trading is the default, and you switch to live by changing a setting. The code is open source under the MIT license.

The README says this package does not set up remote sign-in. So assistants that need a remote server, like ChatGPT or Claude on a phone, need extra hosting work. Alpaca also says to watch any automated trading closely, in case a connection or system fails.

Interactive Brokers#

Interactive Brokers opened its AI connection to any MCP tool on July 28, 2026. Before that, it worked only through approved apps in ChatGPT, Claude and Grok. Clients can ask an assistant to “analyze portfolios, research investments, monitor risk, and draft trade instructions.” The assistant does not place orders. IBKR says “the client reviews each instruction and converts it to an order” on an IBKR platform. You sign in through IBKR’s own screen and give access to one account.

Massive#

Massive’s server gives an assistant access to its market data API. Its README lists stock, options, forex, crypto and futures prices, trades and quotes, plus fundamentals, analyst ratings, news, and treasury yields. It needs a Massive API key, and Massive also hosts a copy you can connect to. The README calls the project “experimental and could be subject to breaking changes.” The project still accepts the old name, Polygon, for its key setting.

Alpha Vantage#

Alpha Vantage links to its “official MCP server” from its API documentation, at https://mcp.alphavantage.co. It gives an assistant the same market data as Alpha Vantage’s API. You need an Alpha Vantage API key, and Alpha Vantage offers a free one with limits.

Should an AI assistant place trades for you?#

Be careful. An assistant can misread a request, pick the wrong ticker, or act on text it read somewhere else. The CFTC warns that AI “can’t predict the future or sudden market changes.” FINRA, the SEC and NASAA tell investors to be wary of anyone who says AI can guarantee returns.

Some safer habits:

  • Test on paper first. Alpaca’s server starts on paper. Tactfolio can’t trade at all, and runs saved strategies on paper until you choose Alpaca.
  • Read every order before it goes out. IBKR’s connector only drafts trades for this reason.
  • Prefer rules you can read. A saved strategy follows the same written rules every day. A chat can give a different answer each time you ask.

Our page on the AI trading bot covers what can go wrong in more detail.

How to choose#

  • If you want to test investing rules without code and run them later, connect Tactfolio.
  • If you write code and want the assistant to help, connect QuantConnect.
  • If you want an assistant to send orders to your broker, Alpaca does that, so start on paper.
  • If you already hold an IBKR account and want answers about it, use IBKR’s connector.
  • If you only need prices and company data, use Massive or Alpha Vantage.

Common questions#

Is there an MCP server for backtesting?#

Yes. Tactfolio backtests long-only stock and ETF strategies built from blocks, with no code, and also backtests Hyperliquid crypto perps. QuantConnect backtests coded algorithms, with a paid agent node. Our guide Can ChatGPT or Claude backtest a trading strategy? explains why a connected tool beats a plain chat for this.

Can Claude trade stocks for me?#

Claude can place orders only if you connect it to a broker that allows that, like Alpaca’s MCP server. Tactfolio’s server lets Claude build and test a strategy, but not trade. Our Claude trading bot page compares the ways to set this up.

Which trading MCP servers work with ChatGPT?#

ChatGPT needs a remote server. Tactfolio and Interactive Brokers both run remote ones. IBKR also has an approved app inside ChatGPT. Alpaca’s package runs on your own computer, so it needs extra hosting work for ChatGPT.

Are MCP servers for trading safe?#

They are as safe as what they allow. A server that can only read data or draft trades can’t lose money by itself. A server that can place orders can. Start on paper, keep live access off until you trust the setup, and read every trade.

What does an MCP server cost?#

The server is usually free, but the service behind it may not be. Tactfolio has a Free plan, and every feature is free until billing opens. QuantConnect needs a paid agent node. Alpaca’s server is free, and Alpaca’s own fees apply to trades. Massive and Alpha Vantage need an API key, and Alpha Vantage has a free one.

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