How to Connect Fidelity to an AI Assistant

Connecting Fidelity to an AI assistant means giving ChatGPT or Claude a secure, read-focused window into your Fidelity positions, so the assistant can analyze the holdings you actually own rather than guessing from a generic example. The link runs through a regulated aggregator, so your Fidelity login is entered at Fidelity's own authentication flow and is never handed to the AI tool.

The important distinction is between an assistant that can see your account and one that can act on it. By default these connections are read-focused: the assistant can read your positions, balances, and the performance of each fund or stock, and reason about them, without the ability to move money. Whether it can place a trade at all depends on what the aggregator enables for Fidelity, and even then any order is something you approve yourself. Fidelity holders most often want the read side, because the goal is analysis: understanding what FXAIX, FZROX, and your individual holdings add up to.

Fidelity already ships plenty of technology, so it is worth being clear about what it does and does not give you. Fidelity Go is Fidelity's robo-advisor: it builds and manages a separate, professionally allocated account for you, but it is not a conversational assistant you can ask open questions about the individual stocks, ETFs, and index funds you already hold. Fidelity's site also has research, screeners, and analytics, but none of that is a chat interface that reasons across your full portfolio in plain English. That gap is exactly what connecting Fidelity to ChatGPT or Claude fills: an assistant that reads your actual positions and talks about them, rather than managing a walled-off robo account.

The other Fidelity-specific reality: Fidelity tends to be conservative about third-party access. In practice that means most aggregator connections to Fidelity are read-only, which is well suited to tracking and analysis but often does not include placing trades. Trade support for any given broker can change, so verify Fidelity's current status on the tool's connection page or on the brokerage screen before assuming an assistant can act on the account. If you only want to understand what you hold, the read-only default is all you need.

There are three practical ways to do it, ordered here from most capable to most manual. The first two give the assistant a live view of your account; the third is a stopgap.

• 1. An MCP connector. A Model Context Protocol connector exposes your Fidelity account to an assistant like Claude or ChatGPT directly, so the assistant itself reads your positions through scoped, permissioned access. This suits people who already work inside Claude Desktop or ChatGPT. Walnut offers a portfolio-aware MCP connector that reads your connected Fidelity account securely. See the best MCP connectors for brokerages.
• 2. A hosted app that connects your brokerage. A purpose-built app such as Walnut links Fidelity securely in a few clicks, with no code, then lets you analyze the account through Claude, ChatGPT, or a built-in assistant. This is the route most Fidelity holders want, because there is no server to run.
• 3. Manual copy-paste. You paste a list of your Fidelity holdings into the chat. It works for a one-time snapshot, but the data goes stale immediately, you have to keep re-pasting, and long fund-and-stock lists invite arithmetic errors. It is a stopgap, not a connection.

The first two rely on the same plumbing: a regulated aggregator that connects to Fidelity for you. The difference is whether the assistant reaches your account directly (the MCP route) or you work inside a hosted app that does (the aggregator route).

The mechanism is what makes this safe, so it is worth understanding. You never hand your Fidelity password to the AI tool. Instead the connection runs through a regulated aggregator in a few steps:

1. You pick Fidelity in the app or connector.
2. The aggregator opens Fidelity's own login page. You authenticate directly with Fidelity, exactly as if you were logging in yourself, so your credentials are entered at Fidelity and never seen or stored by the app.
3. Fidelity issues a scoped access token back to the aggregator, not your password. For most Fidelity connections that token grants read access to positions, balances, and transactions, and nothing more.
4. The AI tool reads through that token. When you ask the assistant about your holdings, it calls the aggregator, which uses the token to pull your live positions and prices. The AI sees data, not your login.
5. Revoking access is one click, from the app or from Fidelity's third-party access settings, and the read access stops.

Because Fidelity access through these aggregators is usually read-only, there is often no trade permission layered on top at all. Where a broker does support trading, reputable tools still gate every order behind your explicit approval.

Walnut connects Fidelity securely, so your login stays at Fidelity. The flow takes a few clicks and no code:

1. Create a Walnut account and open the brokerage-connection screen.
2. Pick Fidelity from the list of supported brokers.
3. Log in at Fidelity. Walnut opens Fidelity's own authentication flow, so your password is entered at Fidelity and never seen or stored by Walnut.
4. Authorize access. The connection is read-focused by default, which is enough to read and analyze your positions.
5. Start analyzing. Ask about your Fidelity holdings, each one's return against the S&P 500, or the overlap between your funds, through Claude, ChatGPT, or the built-in assistant.
6. Disconnect anytime. The brokerage screen has a disconnect action that revokes the connection to your Fidelity account.

Because Fidelity reports positions but rarely passes cost basis through the aggregator, returns are framed as window returns (how a holding has moved over a period) rather than realized profit and loss. That framing is descriptive: it shows how things are doing, not what you should do next. Once your Fidelity account is connected in Walnut, you can also use Walnut from your AI assistant directly: add its MCP server URL, https://walnutinvest.com/api/connector/mcp, as a custom connector in Claude, ChatGPT, or Codex, then sign in with a free Walnut account and approve read-only access (it never places trades). The full per-client setup lives on the Walnut MCP connector page.

Once Fidelity is connected, the assistant is working from your real positions, so the questions get specific. Useful things to ask:

• How each holding is doing. Each stock, ETF, or fund framed against the S&P 500 over a chosen window.
• Fund overlap. Many Fidelity holders own index mutual funds like FXAIX (Fidelity 500 Index) or FZROX (Fidelity ZERO Total Market). Because those funds hold the same large-cap names as ETFs like VOO or VTI, analyzing the overlap with any ETFs you also own is one of the more useful reads, since stacked funds can leave you more concentrated in the same companies than you realize.
• Concentration. How much of your account sits in a single stock or sector once funds and individual holdings are combined.
• What changed. How your positions and their alignment with your targets have moved since you last looked.

The assistant describes what you hold and how it is doing. It does not tell you which fund to buy or sell.

This is the distinction that matters most for Fidelity. A read-focused connection lets the assistant see your holdings, balances, and performance and analyze them, without the ability to move money. That covers what most Fidelity holders want, which is analysis. Whether the connection can place a trade at all depends on what the aggregator enables for Fidelity, and trade support varies by broker. Where trading is supported, it is never automatic: you approve every order yourself before anything is placed, so the assistant cannot trade on its own. If you only want tracking and analysis, the read-focused default is enough, and you never have to enable trading.

It can be safe when the connection is built the right way, and the things to check are concrete. The connection should run through a regulated aggregator, so your Fidelity login is entered at Fidelity's own authentication flow using a token or OAuth-style grant, and is never stored by the AI tool. It should default to read-focused access, so the assistant can analyze but not move money unless you explicitly enable and approve trades. And you should be able to revoke the connection at any time, both from the app that holds it and from your Fidelity account's third-party access settings.

The risk to avoid is any tool that asks for your Fidelity password directly or can trade without your approval. Walnut connects your Fidelity account securely, keeps access read-focused by default, requires your explicit approval for any order where trading is supported, and lets you disconnect whenever you want. Walnut is not an investment adviser.

Several apps can link a Fidelity account and add an AI layer. They differ in what they emphasize, so match the tool to what you want:

• PortfolioPilot. Links your accounts read-only and returns a structured critique with a risk score and suggested changes. Best for a written second opinion on the whole portfolio.
• Walnut. Connects Fidelity securely and lets you analyze and manage it by talking through Claude, ChatGPT, or a built-in assistant, with each holding framed against the S&P 500. Read-only by default. Best for talking to your own Fidelity account through Claude or ChatGPT with no code.
• Magnifi. A conversational assistant you ask natural-language questions about funds and holdings. Best for research and fund discovery in plain English.
• Mezzi. Aggregates several accounts into one view with a tax-aware lens. Best for tax-aware tracking across multiple accounts.

To be upfront, since this is our site: Walnut is the AI investing assistant that talks to the broker you already have and places the trades you approve. It is one option here, not the only one and not crowned overall: if you mainly want a written critique, PortfolioPilot fits; if you want fund research, Magnifi does; if you want tax-aware tracking across accounts, Mezzi does. For the broader field across brokers, see the best MCP connectors for brokerages and the best AI investing app overview. Walnut is not an investment adviser.

If you hold your portfolio at Fidelity and want an AI assistant that can actually see it, the fastest path is a hosted app that links Fidelity securely. Create an account, pick Fidelity, log in at Fidelity's own flow, and authorize read access. From there you can ask Claude, ChatGPT, or a built-in assistant about your real holdings, including how your FXAIX or FZROX position overlaps with any ETFs you own. For the broader picture across brokers, see how to connect any brokerage to an AI assistant and which brokers have an AI assistant. If you are weighing which funds you hold, the best Fidelity ETFs overview is a useful companion.

Fidelity has no built-in AI assistant for your portfolio, and ChatGPT and Claude cannot see your account on their own. You connect them through a secure aggregator, which exposes your positions so the assistant can analyze your real Fidelity holdings, including index funds like FXAIX and FZROX and any ETFs you own. The connection is read-focused for tracking and analysis; where trading is supported, you approve every order, and you can disconnect at any time. Walnut connects Fidelity securely and lets you analyze your holdings through Claude, ChatGPT, or a built-in assistant. Walnut is not an investment adviser.