Claude Code: QuanterLab MCP server

A backtesting tool you use by describing a rule in words: Claude Code tests it on QuanterLab and answers with its figures and its report's link. Its MCP server gives Claude Code the platform's backtests, walk-forwards, scans and published research. It runs on QuanterLab's servers at https://quanterlab.com/mcp, over HTTP, and you sign in with your QuanterLab account the first time.

Step one

Add the server

In a terminal:

claude mcp add --transport http quanterlab https://quanterlab.com/mcp

It is added for the project you are in. To have it in every project, put --scope user before the name.

Step two

Sign in, once

  1. Start Claude Code and type /mcp.
  2. Choose quanterlab and follow its steps: a QuanterLab page opens in your browser. If you are signed in on quanterlab.com there, it knows you; otherwise sign in with your email and password or with Google. Approve.
  3. Back in Claude Code, quanterlab shows as connected. Claude Code keeps the sign-in and renews it.

You need a QuanterLab account: every new account starts with 30 days of Practitioner, free and with no card. Sign up.

The other route

Or the plugin

The plugin carries the same server, and five skills that tell Claude how to use it: backtest-a-rule, walk-forward-check, scan-for-candidates, run-a-saved-strategy and read-the-research. Two commands in a terminal; take this route or the one above, not both.

claude plugin marketplace add quanterlab-ug/quanterlab-claude-plugin
claude plugin install quanterlab@quanterlab

The first sign-in is the same: /mcp, then your browser.

Then

Three things to ask

  1. Backtest buying SPY when its 2-day RSI falls below 10 and selling when it rises above 70, over the last ten years, against simply holding SPY.
  2. Run a walk-forward on that rule to see whether it holds on years it never saw.
  3. What did QuanterLab find about the Piotroski F-score?

A run answers in words, with a few rounded figures and the link to its full report on quanterlab.com. QuanterLab places no orders, connects to no broker and moves no money. Research and education only, not investment advice.

More

Where next

QuanterLab in Claude: the same research in claude.ai, with the result cards and five questions to try.

Connect Claude or ChatGPT: the connector by hand, what each plan runs, and the tool list.

Documentation

The chapters

Start here
An account, the modules, a first backtest, a first circuit, and where your work is kept.
Running studies
Time Travel, walk-forward and Autopsy; the cycle from a registered hypothesis to a published paper.
Assistants
Quantin, Claude, ChatGPT and the desktop's seat: what each one can do, where it runs, and what account it needs.
Connect Claude or ChatGPT
The connector URL, the setup steps for claude.ai and ChatGPT, the four skills and the tool list.
Claude Code
QuanterLab's MCP server in Claude Code: the command that adds it, the first sign-in, the plugin, and what to ask.
Data and limits
Where the market data comes from, what leaves the platform, and the daily allowances.
Account and plans
The three plans and what each adds, moving between them, firms and institutions, and the legal pages.