Fair Value Calculator

Fair Value Calculator MCP server

Hosted Model Context Protocol server of Fair Value Calculator. It lets an AI assistant look up what a listed stock is worth according to our valuation models, instead of estimating a number from memory.

This repository holds the documentation and the registry manifest (server.json). The server itself is a hosted service; there is nothing to install or run locally, and its source code is not part of this repository.

Endpoint	https://www.fairvalue-calculator.com/mcp
Transport	Streamable HTTP
Authentication	OAuth 2.1 with dynamic client registration. A free account is enough.
Registry name	com.fairvalue-calculator/fair-value
Setup guides	https://www.fairvalue-calculator.com/integrations
Overview	https://www.fairvalue-calculator.com/mcp

What it covers

Fair value per share, valuation status and a quality score for 40,000+ listed stocks worldwide. The fair value is blended from several valuation models on reported fundamentals and is recalculated daily. Method and limits: https://www.fairvalue-calculator.com/methodology.

The numbers are model estimates, not prices and not investment advice. Where the data does not support a figure, the server returns the verdict without a number instead of a weak estimate.

Tools

Tool	What it does
resolve_stock	Turns a name, ticker or ISIN into the matching listing, up to five matches.
get_stock_preview	Verdict, distance to fair value in bands and quality score for one stock, without the exact number.
get_stock_verdict	Fair value per share with currency, distance to the price, verdict, quality score and data level, with a link to the full analysis.
compare_stocks	Several stocks side by side with the same values.
screen_stocks	Stocks matching criteria: minimum distance to fair value, minimum quality, sector, region.
get_watchlist	Reads the watchlist of the signed-in account.
add_to_watchlist	Adds a stock to the watchlist.
remove_from_watchlist	Removes a stock from the watchlist.
set_watchlist_alerts	Switches the e-mail alerts of the account's watchlist on or off (Pro).
suggest_watchlist_stocks	Suggests up to eight stocks that fit the saved watchlist: priced below fair value, high quality score, not held yet, ranked with their correlation to the stocks already on it; can also suggest a replacement of similar size for one stock. Changes nothing (Pro, not offered in ChatGPT yet).

The three tools that change the watchlist or alerts ask for separate consent during sign-in.

Free accounts get the verdict tools with monthly limits; exact fair values for all stocks, comparisons of up to five stocks, alerts and watchlist suggestions are part of Pro. Current limits and prices: https://www.fairvalue-calculator.com/pro.

Connect

In any client that supports remote MCP servers, add the endpoint and sign in when prompted:

https://www.fairvalue-calculator.com/mcp

Claude Code:

claude mcp add --transport http fair-value-calculator https://www.fairvalue-calculator.com/mcp

Codex:

codex mcp add fair-value-calculator --url https://www.fairvalue-calculator.com/mcp

Cursor (.cursor/mcp.json):

{"mcpServers":{"fair-value-calculator":{"url":"https://www.fairvalue-calculator.com/mcp"}}}

VS Code: run "MCP: Add Server", choose HTTP and paste the endpoint.

This repository is also a Cursor plugin (plugins/fair-value-calculator), which registers the same endpoint.

Gemini CLI (this repository is also a Gemini CLI extension, gemini-extension.json):

gemini extensions install https://github.com/petz00711/fair-value-calculator-mcp

Step-by-step guides for Claude, ChatGPT, Claude Code, Cursor, VS Code and Codex: https://www.fairvalue-calculator.com/integrations.

Example questions

• "What is Apple worth according to Fair Value Calculator?"
• "Which European technology stocks are undervalued right now?"
• "Compare Microsoft, Alphabet and Meta."
• "Add Nestlé to my watchlist."

Open data

Monthly market valuation datasets (CC BY 4.0): https://github.com/petz00711/fvc-open-data, DOI 10.5281/zenodo.21639205.

Support

Questions and problem reports: [email protected], or open an issue here.

License

The documentation and manifest in this repository are licensed under CC BY 4.0. The hosted service is proprietary and is used under the terms at https://www.fairvalue-calculator.com/legal.php?doc=agb&lang=en.