Use DCA Scenario Explorer in your AI

Install one skill in Claude, ChatGPT or Grok, then ask your question in plain words. Your AI looks up what you did not say, lists every assumption with its source, and replies with one link that opens DCA Scenario Explorer on your scenario. The tool works out the answer, so the figures you see are the tool's, not the chatbot's.

 Download brotools-dcasimulator.zip Open the tool

A .zip skill: SKILL.md (how to answer), references/ (every input, its range and the Quick Starts) and scripts/build_link.py (builds and checks the link). Read SKILL.md

Install the skill

Pick your assistant. The demo plays the steps; press a step to jump to it.

    Menus move as these apps update; look for Skills in Settings. Skills need the app's code tool switched on (Claude: Code execution and file creation). No skill support on your plan? Attach brotools-dcasimulator.zip or SKILL.md to the chat and say "use this skill".

    How to use it

    Ask as you would ask a friend. With the skill on, the AI keeps your figures, researches the rest, and hands you the link. It does not give the answer itself: the tool does, once you open the link.

    I want to put $500 a month into VOO and QQQ from 2015 to now; how would it have gone?

    Using skill brotools-dcasimulator Ran scripts/build_link.py: link checked

    Your inputs

    • amount: 500

    Assumptions

    1. Tickers: VOO and QQQ, one scenario each, with the same plan, because the user named the two funds.
    2. Schedule: 500 invested on the 1st of every month, the tool's default day, since the user gave no day.
    3. Start date: 2015-01-01, the first day of 2015.
    4. End date: left out, so the tool uses today, which is what "to now" means.
    5. Currency: the default $, since both funds trade in US dollars.

    Your scenario

    Open DCA Scenario Explorer on this scenario

    https://tool.adjiebrotots.com/dcasimulator/#load&v=1&tickers=VOO,QQQ&why.tickers=The%20two%20funds%20the%20user%20named,%20each%20as%20its%20own%20scenario%20so%20they%20can%20be%20compared&amount=500&why.amount=The%20user%27s%20$500,%20invested%20once%20a%20month&startDate=2015-01-01&why.startDate=The%20user%20said%20from%202015,%20so%20the%20first%20day%20of%20that%20year&note=VOO%20and%20QQQ,%20monthly%20from%202015%20to%20now

    Open the link to see the result.

    Open this scenario
    • Your figures stay yours. Anything you state goes in as you said it; correct any assumption and the AI sends a new link.
    • Checked before you see it. The skill's script checks every input's name, range and choices before the AI sends the link, so it opens the scenario listed.
    • The tool shows what the AI chose. When the link opens, a banner lists each value the AI set and why, with an Undo back to your own inputs.

    Ready to try it?

    Download the skill Read the guide Open the tool