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How to create Investment Thesis Writer using MCP

Structure an investment thesis for any asset or company. This guide creates the Investment Thesis Writer prompt from Arthur's template catalog, sets up a blank MCP server, and links the prompt so any connected AI client can use it.

Steps

  1. Go to Prompt Templates and search for Investment Thesis Writer.

    Open the Prompt Templates catalog

    Search the catalog for the Investment Thesis Writer template

  2. Click Use template on the Investment Thesis Writer card and review the prefilled name, description, and content preview.

    Open the Investment Thesis Writer template with its prefilled name and content preview

    Create the Investment Thesis Writer prompt in the shared library

  3. Click Create prompt — the prompt is added to your shared library.

    Start creating the MCP server that will expose the prompt

  4. Go to New server, choose Blank / Static as the source, and click Next.

    Choose the Blank / Static source — no external connection is needed for a prompt-only server

    Advance to the server details step

    Name the server after the prompt it will expose

    Create the blank MCP server

    Open the server's Prompts tab

  5. Name the server (for example, Investment Thesis Writer Server) and click Create server.

    Open the prompt-library picker

  6. On the server's Prompts tab, click Add prompt, search for Investment Thesis Writer, and click Add.

    Search the library for the Investment Thesis Writer prompt

    Link the Investment Thesis Writer prompt to the server

    Close the picker and show the linked prompt on the Prompts tab

  7. Open the server's Connect section and click Share the MCP swagger documentation — Arthur generates the public documentation link and QR code for this server.

    Open the server's Connect section, where the MCP endpoint and its documentation live

    Open the MCP swagger documentation share panel

    Show the generated swagger documentation link and QR code for this server

Confirm it worked

The Investment Thesis Writer prompt appears on the server's Prompts tab, and the Connect section offers the server's MCP swagger documentation — a shareable page with setup instructions for any AI client. A connected client can now fetch the prompt through this server.

Good to know

  • Creates a structured investment thesis with bull/bear cases, valuation, and risk factors.
  • Arguments detected from the template: {{asset}}, {{asset_class}}, {{horizon}}, {{price}} — callers fill these in when invoking the prompt.
  • Editing the prompt in the shared library updates it on every server where it's linked.

Related

Tutorial video