Yes, with caveats. According to Trezor Suite's settings at our last review (2026), the companion desktop app for Trezor hardware wallets offers an experimental, built-in MCP server you can turn on yourself. It runs locally on your machine (Settings > Experimental, port 21340, token-authenticated) and lets an MCP-capable AI agent operate your device directly. Experimental features can move or change between Suite releases, so confirm the menu path and port in your installed version before you rely on them. That's a provider-built connection, not a workaround. But it's scoped to the device and the Suite app on your computer, not to a hosted account your AI can reach from anywhere, and it doesn't cover your bank, brokerage or other exchange holdings. For the rest of your financial picture, Truthifi connects your bank, brokerage and aggregatable crypto accounts to the same AI assistant, read-only.

What Trezor does

Trezor, made by SatoshiLabs, is a hardware cryptocurrency wallet brand. The physical device stores your private keys offline, in self-custody, so your crypto assets never have to touch an internet-connected system to be signed and sent. It's built for people who hold their own crypto rather than leaving it on an exchange.

Trezor Suite is the companion application, desktop and web, that you use to view balances, build and sign transactions, manage accounts, and configure the device itself.

Because Trezor is a self-custody tool, there's no central Trezor account database the way there is with an exchange or a bank. What exists is the device, the keys it holds, and the Suite software that talks to it.

Does Trezor have an MCP server or API?

According to Trezor Suite's settings at our last review (2026), the desktop app includes an experimental MCP server. It's off by default and sits in Settings under the Experimental section. Once enabled, it listens on localhost port 21340 and requires token authentication, so an AI agent needs both access to your machine and the token to talk to it.

This is designed to let an AI agent operate the device directly: think account information and transaction-related actions mediated through Trezor Suite itself, not a cloud API that any assistant could reach from the internet. Because the feature is labeled experimental, check Trezor's release notes for your Suite version before relying on these details.

For developers who want to build integrations without going through the Suite UI, Trezor also offers the Trezor Connect SDK. According to Trezor, it handles account information, address derivation, and transaction signing, so third-party software can talk to a connected Trezor device. There's no market-data API here: Trezor isn't in the business of supplying price feeds or market data, only wallet and signing functionality.

Put together: Trezor's AI access is local and tied to a specific machine and a running Suite instance. It is not a hosted, always-on connection you can point a cloud-based assistant at from anywhere, and it doesn't aggregate holdings across other wallets or exchanges.

How to connect Trezor to an AI assistant today

Setup happens on one desktop computer, inside Trezor Suite, and takes a handful of settings changes. The steps below reflect the Suite menus at our last review (2026). If your version labels things differently, follow what your Suite shows. Bank, brokerage and exchange accounts connect separately through Truthifi.

1. Open Trezor Suite on the desktop computer where your Trezor device is set up.

2. Go to Settings and find the Experimental section.

3. Enable the built-in MCP server.

4. Note the port (21340) and the authentication token Suite generates for the connection.

5. Configure your MCP-capable AI agent to connect to the local server using that port and token.

6. Confirm the device is connected and unlocked so the agent can read account information or request signing actions through Suite.

7. For everything outside your Trezor device (bank accounts, brokerage holdings, and crypto held on exchanges you can connect to Truthifi), link those accounts to Truthifi separately so the same AI assistant can see them too.

When a session is over, switch the MCP server back off in Suite. On the Truthifi side, you can cut an assistant's access at any time via Connections → Agents → ⋯ → Revoke.

What You Can Ask

With Trezor Suite's MCP server enabled and your agent connected, you're working within what that local server exposes around your device and its accounts. Think in terms of "what's the balance in this account on my Trezor" or "help me review this transaction before I sign it."

Once you've also connected your other accounts to Truthifi, you can ask broader questions in the same conversation, such as "what's my total crypto exposure across my Trezor holdings. And my exchange accounts" or "how much of my net worth is in self-custodied crypto versus my brokerage account." The Trezor-side answer comes from Suite's MCP server, and the rest comes from what you've linked to Truthifi.

With & Without Truthifi

Without Truthifi: your AI assistant can operate your Trezor device through Suite's local MCP server once you enable it. It can see what's on that device and help with transaction-related actions. It has no visibility into your bank accounts, your brokerage holdings, or crypto sitting on exchanges. Each of those would need its own separate connection, where the provider offers one.

With Truthifi: the accounts Truthifi can aggregate (your bank, brokerage and supported crypto exchange accounts) are linked once, read-only, and visible to the same AI assistant. Your Trezor device itself stays connected the way SatoshiLabs built it, through Suite's own MCP server. Truthifi doesn't replace that connection or claim to read your hardware wallet directly. It fills in everything Trezor's local server was never meant to cover, so your assistant can reason about your full financial picture in one conversation.

How Truthifi Can Help

Truthifi is not a replacement for Trezor Suite's MCP server, and it can't read a hardware wallet directly. What it does is connect the accounts around your self-custody holdings: your bank, your brokerage, and the crypto exchange accounts you can aggregate, through Plaid, Yodlee or By All Accounts, 18,000+ institutions in total.

In practice, the exchange where you bought coins before moving them to your Trezor, and the brokerage holding the rest of your portfolio, show up read-only in the same assistant session where Suite answers for the device. Truthifi runs 130+ automated diagnostics on what you connect. According to Truthifi's own internal measurement, its data accuracy is 99.7%. That's a figure Truthifi measures itself, so weigh it accordingly. Truthifi is not an investment adviser and doesn't give investment, tax or legal advice.

Our recommendation: treat Suite's MCP server as a session tool. Turn it on when you have a specific task, such as reviewing a transaction before you sign, and switch it off afterward. Let Truthifi carry the standing, read-only view of the exchange and brokerage side.

A note on scope: whether a specific crypto exchange account can be bridged through Truthifi depends on whether that exchange supports aggregation. Many consumer exchanges do, but coverage varies, so check yours in Truthifi's connection flow before assuming it's included. A self-custody hardware wallet like Trezor itself isn't an aggregatable account in the Plaid/Yodlee/By All Accounts sense. Its AI access runs through Trezor's own MCP server, as described above, not through Truthifi.

FAQ

Does Trezor have an official MCP server? Yes, according to Trezor Suite's settings at our last review (2026). The desktop app includes an experimental MCP server you enable in Settings under Experimental. It runs on localhost port 21340 with token authentication. Confirm these details in your installed Suite version, since experimental features can change.

Can an AI assistant see my Trezor balance? Once you enable the MCP server in Trezor Suite and connect an MCP-capable agent to it, yes. The agent can read account information and work with transactions through Suite, on the machine where it's running.

Does Trezor have a market-data API? No. Trezor doesn't offer a market-data API. Developers integrate through the Trezor Connect SDK, which handles account information, address derivation and signing, not price or market data.

Can Truthifi connect directly to my Trezor device? No. Truthifi aggregates bank, brokerage and supported crypto exchange accounts through Plaid, Yodlee and By All Accounts. A hardware wallet like Trezor isn't aggregated that way. Its AI connection runs through Trezor Suite's own MCP server.

Is my Trezor device safe to connect to an AI agent? Trezor built the MCP server itself, with local-only access and token authentication, which limits it to agents running on the same machine with the right credentials. How you configure and secure that connection is controlled by Trezor Suite's own settings, not Truthifi.

Read Next

• Is Finicity safe? A standalone guide to the data aggregator (not a Truthifi partner).

• The lifetime fee calculator: see what fees across your accounts cost over time: /education/lifetime-fee-calculator

• The Household Financial Health Study: what linked household data shows about fees and account complexity: /education/household-financial-health-study/

• Other crypto provider MCP guides on Truthifi, for comparing how different exchanges and wallets handle AI access: /providermcps

Start Free on Truthifi

See exactly what's in your linked accounts: connect your bank, brokerage and supported exchange accounts free, read-only, and run 130+ automated diagnostics on what you link. You stay in control, and you can revoke any AI agent's access at any time via Connections → Agents → ⋯ → Revoke. Start free on Truthifi or browse the Provider MCP guides first.

One last thought: with Trezor, the split itself is the safety design. Your keys stay on the device behind Suite's local server, and Truthifi's side is read-only, so a mistake made by an AI assistant has far less within reach.