Mr. MarketDocs
Open Mr. MarketConnect
DocsConnect

Claude (web and desktop)

Add Mr. Market as a custom connector in claude.ai or the Claude desktop app.

Works in claude.ai and the Claude desktop app on Mac and Windows. Custom connectors depend on your Claude plan; on Team and Enterprise plans an owner may need to add the connector first.

Add the connector#

  1. Open Settings → Connectors and choose Add custom connector.

  2. Name it Mr. Market and paste this address:

    https://mrmarket.fyi/mcp

  3. Choose Add, then Connect. Mr. Market's sign-in opens in your browser. Sign in and choose Allow.

You're back in Claude with Mr. Market listed as connected.

Use it in a chat#

  • In a new chat, open the + menu (or the tools menu) and make sure Mr. Market is switched on.
  • Ask normally. The first time, say using mr-market so Claude picks the right tools.
  • Claude may ask before using a tool. Every Mr. Market tool only reads, so Always allow is safe.

Tip: make it automatic. Turn on Memory in Claude, then send: "Always use the Mr. Market connector when I ask about a US company's financials, filings, earnings calls, ownership or market data. Save this to memory."

Workflows from the + menu#

Mr. Market's skills appear as prompts. In a chat, open + → Add from Mr. Market and pick one, such as Company snapshot. Fill in the company and send.

In a Claude Project#

Add this to the project's instructions so every chat in it uses Mr. Market the same way:

Use the Mr. Market connector for US company data. Cite every number with its period and filing.
Use tables for multi-period numbers. Say "not reported" instead of estimating a missing value.

Disconnect#

Remove it in Settings → Connectors, and disconnect it in Account on Mr. Market.