Ask it whether a company is worth owning and it does the work properly: pulls the filings, walks through a written valuation procedure, checks it against what you already hold, and tells you what it found. It remembers your goals between conversations, and nothing about your portfolio ever leaves your laptop.
> is ASML expensive at these levels?
Checking your profile, pulling the financials, and running the intrinsic value procedure.
You hold this for the long run and you prefer franchises, so the question is whether the moat justifies the price.
Net asset (reproduction) value ~€118 / share Earnings power value ~€196 / share Earnings power above asset value a franchise, not a commodity business
At €742 you are paying roughly 3.8× earnings power, so almost the whole price is growth you have not seen yet. That is defensible only if the moat holds for a decade. Shall I test the moat next?
Illustrative. The figures above are invented for this page and are not output from a real run.
Ways to use it
Mostly it plugs into the tools you already have, and you talk to it the way you already do. There is a web app too, if you would rather have one.
Recommended
Run Claude Code inside the InvestPal folder and it becomes the analyst. It picks up your profile at the start of every session, has the full research and brokerage toolset, and runs any reviews that have come due while you were away.
In your browser
A local browser app, started with one command alongside everything else. Chat with the full history of every past conversation, schedule the reviews that run without you and read their reports, and see what it is holding on to for you. It runs on your machine like the rest of it, and because it drives InvestPal's own agent rather than borrowing Claude Code's, this is the one surface that needs an Anthropic or OpenAI key.
No terminal needed
Add InvestPal to Claude Desktop and ask your questions in an ordinary chat. Best if you dip in occasionally rather than sitting down to a research session.
Bring your own
InvestPal speaks the Model Context Protocol over HTTP, so any assistant that supports MCP can use the same tools. Claude Code and Claude Desktop are the two documented setups, and other clients follow the same pattern.
Build on it
There is a REST API underneath if you want to put your own interface on top, or wire InvestPal into something you already run.
What it does
01
Stocks, ETFs, cryptocurrencies, commodities, currencies and economic indicators. It can look up a company's financial statements, see which sectors are moving, read who has been buying their own shares, check what well-known investors hold, and even pull the odds markets are putting on real-world events.
02
Tell it your risk tolerance, your horizon and what you are trying to achieve, once. It builds a picture of you and keeps notes as you talk, searchable by meaning rather than by exact words, so you can ask what you concluded about something months ago. A second agent maintains that memory quietly in the background so your conversation is never interrupted by bookkeeping.
03
Ask it to watch something and it will. It tracks the dates you care about and reminds you, and it can run reviews on a schedule, a portfolio check every Monday morning for instance, leaving the write-up waiting for you next time you open it.
04
Connect Alpaca, Coinbase or Interactive Brokers and the advice is about what you actually hold, not a hypothetical. This is entirely optional and off until you turn it on. You can keep it read-only so it can look but never act. When it can place orders, Alpaca points at a paper account until you deliberately change that, and Interactive Brokers keeps every order off the market until you confirm it.
You do not need a brokerage account to use InvestPal. It works as a research companion on market data alone. Connecting a broker is something you can do later, or never.
The method
Most AI gives you a fluent answer assembled on the spot. InvestPal works through a written procedure instead, the same one every time, so you can tell the difference between analysis and a confident paragraph. Fifteen of them are built in, drawn from Graham and Dodd on valuation and Howard Marks on cycles and risk.
“Risk is not volatility. A stock that drops 50% while its intrinsic value remains unchanged has become less risky.”
“Investment success comes from buying things well, not from buying good things.”
“The danger is not having a wrong opinion. It is having the same opinion as everyone else and mistaking it for insight.”
“Themes are usually right about the world and wrong about the investment.”
Every procedure is written out in full and versioned in the open, so you can read exactly what the analyst was asked to do before it answered you. See them on GitHub
Where the data comes from
The numbers come from the institutions that publish them and from official filings, so you can trace any figure back to where it came from. None of it sits behind a subscription.
Economic indicators and commodity prices, from the St. Louis Fed's FRED database.
Official daily reference rates for currency conversion.
Insider buying and selling, read straight from the Form 4 filings companies are required to make.
What well-known investors actually hold, compiled from their quarterly 13F disclosures.
Company and ETF fundamentals, financial statements, sector performance and market news.
Cryptocurrency prices, market data and search across thousands of coins.
Cryptocurrency news as it is published.
What prediction markets are pricing for real-world events.
No data subscription, no data-provider keys to manage, and no per-call bill for any of this. The only credentials InvestPal asks for are your own brokerage login details, and only if you decide to connect one.
Privacy
There is no InvestPal server. No account, no sign-up, and no company holding a database of what you own. You run it, and it runs on your hardware.
Your profile, your notes, your reminders and every report it has written for you live in a single file created the first time you start it. Back it up, move it, or delete it.
No account, no login, no subscription and no multi-user database with your name in it.
Finding an old note by meaning rather than keyword runs on your own processor. The text of your notes is never sent anywhere to make that work.
They live in a single protected file on your own disk, read only by the part of InvestPal that talks to that brokerage. They are never written to the database and never sent anywhere but the brokerage itself.
Optional sync to your own cloud database exists, and it runs only when you explicitly trigger it. Nothing syncs on a timer or behind your back.
InvestPal is built from five small services that all run on your machine. The full architecture and every line of source is on GitHub.
Get started
Setup is a single command that does everything: checks what you have, fetches what it needs, prepares your database and starts the whole thing running.
$ git clone https://github.com/OrestisStefanou/InvestPalEcosystem $ cd InvestPalEcosystem $ make setup $ make claude
It checks what you already have installed and tells you what is missing, then fetches everything, writes your configuration, prepares your database and starts running.
Whether to connect a brokerage, and whether to use your own AI provider key. All three default to no and every one can be skipped by pressing Enter.
One more command opens the analyst. It introduces itself, asks what you are trying to achieve, and gets to work.
InvestPal is a personal project, built in the open, and it runs entirely on your machine.
Not investment advice. InvestPal is software. Its output is generated by a large language model from public data and may be incomplete, out of date or simply wrong. It is not a regulated investment advisory service, no adviser-client relationship is created by using it, and nothing it produces is a personal recommendation. Brokerage integrations can place real orders when you configure them to; you are responsible for every order placed from your accounts. Do your own research, and take professional advice before making investment decisions.