Can You Connect Gemini to Public?
Last updated November 2026
Short answer
We have not verified that Gemini can hold a custom connector, so as far as we can confirm it cannot read a Public account today. That is a fact about Gemini rather than about Public, which connects perfectly well, including for buys you approve. The route that works now is either an assistant that does support connectors, such as Claude or ChatGPT, or Walnut's own built-in assistant, which needs no third-party client at all. Walnut is informational and is not an investment adviser.
Gemini is strong at reasoning over what you give it, and not something we have verified can hold a live brokerage connection. Below is what works today for a Public account, and how to check whether Gemini has added connector support since this page was updated.
What actually works instead
The connection has to be supported by the assistant, and support for custom connectors is uneven and changes quickly. Claude and ChatGPT are verified. Gemini is not, so anything claiming otherwise is worth checking before you spend time on it.
Three routes are open today. Use an assistant that does support connectors. Use Walnut's own built-in assistant, which reads a connected Public account without needing Gemini or any other client. Or paste a snapshot of your holdings into Gemini by hand, which works for a one-off question and goes stale immediately.
Walnut reads Public and places buys you approve there. Public enforces a $5 minimum per fractional order, so each leg of a small basket has to clear that. Public also hosts its own connector at mcp.public.com/mcp for Public accounts only; Walnut adds analysis across your other brokers and baskets with target weights.
To check whether this has changed, look in Gemini's settings for a section named connectors, MCP servers, tools or extensions. See our running list of which assistants support this.
If you paste your Public holdings in instead
Pasting needs no setup, and it works for a single question. If Public has no positions download you can find, a screenshot of the positions screen works, because Gemini reads images. Keep the symbol, the number of shares and the current value of each position. Remove account numbers and your name first: the assistant needs none of them to answer.
Pasting has limits. The numbers are out of date as soon as prices change. Gemini cannot say how a holding has performed over time unless you also give it past prices. If it misreads a row, nothing catches the mistake. It also sees only the accounts you paste, so it cannot spot the same stock held at two brokers unless you paste both.
If you paste the same account every week, a live connection through Claude, ChatGPT or Walnut's built-in assistant saves that step.
Public's own AI connector
Public hosts its own official MCP server at mcp.public.com/mcp, part of the Agentic Brokerage it launched on March 31, 2026. Its setup docs list Claude, ChatGPT, Codex, Perplexity, Grok and Meta Muse, and it can read a Public account and place orders. It works with Public accounts only.
That makes it the direct route if Public is the only account you want an assistant to see. Walnut covers a different case: one connection across several brokers, including brokers with no connector of their own, read-only by default, with baskets of target weights on top, and buys placed only when you approve each one.
What it can and cannot see
| Data | Available? |
|---|---|
| Positions and quantities | Yes, once connected. This is the base of any analysis |
| Average cost per position | Not through Walnut, which receives no cost basis from brokers, so returns are measured as price change over a period |
| Account balances | Yes |
| Placing an order | Buys, yes, with your approval on each order, from Walnut's app and assistant |
| Your tax position and goals | No. Nothing knows this unless you say it |
| Accounts at other providers | Only if you connect those too |
Whether orders can be placed depends on the broker and on Walnut, not on the assistant. Walnut places buys you approve at Public, and at E*Trade, tastytrade, Webull and other brokers, and reads every other connected broker in full, so the analysis can cover all your accounts while each buy goes to a broker that takes them.
Get a recommendation for your situation
Walnut is the AI that knows your portfolio: ask anything in plain English, research any fund, and get an honest second opinion. On the broker you already use, read-only, and you approve every trade. Walnut is not a registered investment adviser.
What to ask about your Public account
First ask the assistant to list your positions, so you know what it can see. These questions are useful on a Public account in particular.
What trades would bring this basket back to its target weights?
Public takes buys you approve through Walnut. The assistant lists the trades, and nothing reaches Public until you approve the specific order.
Does every leg of this plan clear Public's $5 minimum?
Public requires at least $5 per fractional order, so the smallest target weight in a basket, not the number of holdings, decides the smallest amount that works.
How has each holding done against the S&P 500 over the past year?
Walnut measures each holding as price change over the period against the index, because brokers send no cost basis, so it shows how each holding performed, not your profit or loss on it.
You may not need Gemini for this
If the goal is to ask questions about your own portfolio and get answers based on what you hold, the assistant you use is a matter of preference.
Walnut connects Public and has its own built-in assistant, so the conversation works whether or not Gemini ever supports connectors. For people who would rather stay in the assistant they already use, Walnut also exposes an MCP connector that Claude and ChatGPT accept. Both routes read the same account.
Related: connecting Public to an AI assistant covers this broker in depth, and AI portfolio analysis covers what you can learn from reading the account alone.
FAQ
Can Gemini connect to Public?
We have not verified that Gemini can hold a custom connector, so as far as we can confirm it cannot read a Public account today. Public's own official connector works with assistants that accept MCP connectors, which we have not verified Gemini does. That may change, and the way to check is to look for a connectors or MCP section in its settings. In the meantime the working route is an assistant that does support it, or Walnut's own built-in assistant.
Does Gemini see my real Public holdings?
Not today, as far as we can verify. Anything Gemini says about your holdings comes from what you typed into it, not from your account.
Can Gemini place trades in my Public account?
Walnut's own app and built-in assistant place buys you approve at Public, and nothing reaches the broker until you approve the specific order. Approving and placing are separate steps, and each approval covers one specific order. Public's own connector is a second route for orders, limited to Public accounts.
Is it safe to connect Public to an AI assistant?
The safe shape is the same regardless of assistant: you sign in at Public's own screen so no tool handles your password, access is scoped and revocable, and you can end it from the broker's side as well as the app's. Check those before you connect.
What can it not do?
It does not know your tax position, your goals, or any account you have not connected, so advice depending on those is guessing unless you supply them. It also cannot see accounts at other providers unless you connect those too.
Do I need Gemini at all?
No. Walnut has its own built-in assistant that reads a connected Public account directly, so you can ask about your portfolio without Gemini or any other client supporting connectors. Using Gemini is optional.
Which brokers can an AI assistant actually trade?
Through Walnut, buys you approve are placed at Public first, and also at E*Trade, tastytrade, Webull (US and Canada), moomoo, Questrade, Wealthsimple, Trading 212 and Stake (Australia). Every other connected broker, including Robinhood, Fidelity, Schwab, Vanguard and Interactive Brokers, is read in full for tracking and analysis. Separately, several brokers now run their own official AI connectors for their own accounts, including Robinhood, Interactive Brokers (which drafts orders for you to submit), Webull and Public.
How do I disconnect Public?
From the app that holds the connection. In Walnut, the brokerage screen has a disconnect that removes the authorization, so nothing can read Public through it any more, including Gemini. You can also review and revoke connected apps from Public's own account settings.
Is connecting Public to Gemini free?
Walnut is free to start, including connecting Public and using Walnut's built-in assistant. Walnut Plus, $9.99 a month on the web, removes the session limit on the assistant. Pricing changes, so check the current plans before you rely on this.
What should I ask once it is connected?
Ask it to list your positions and their weights, sorted by value. That shows what it can see and how concentrated the account is. Then ask how each holding has done against the S&P 500.
More on Public
Connect your broker to an AI assistant
Step-by-step guides for each major broker, plus the general setup guides for ChatGPT and Claude, which brokers have an AI assistant built in, and Walnut's MCP connector.
Related articles
Walnut is informational and is not an investment adviser, and nothing here is investment advice. Assistant connector support and broker integrations both change; the positions described were checked again in October 2026 and may have changed since.