How to Use the Tessie Connector in Muse

1. The short answer

As of October 25, 2026, Tessie is a live connector in Muse. It was still listed in the October 15 in app check, which counted 54 connectors in the web app, in the home and lifestyle group. Tessie is the Tesla companion app used by more than 500,000 drivers to track trips, battery health, charging, and phantom drain, and to automate their cars with schedules and triggers. Connect it and Muse can list your vehicles, read their state, and send commands like honk, flash, lock, and precondition, all from plain word requests. It connects with a Tessie API token you create in Tessie settings, never with your Tesla password, and Muse never asks for that token in chat.

Here is the honest version. Tessie is the connector for people who already own a Tesla and already pay for Tessie, or who are about to. The value is not that Muse can honk your car. Your phone can do that. The value is that Muse can reason about your car: how much range you actually have for tomorrow, whether the charge you set last night finished, how much battery the car lost while parked, and whether the cabin will be warm when you leave. The rest of this guide covers how to connect it, the token setup to get right, the uses that are actually worth your time, and the limits to know before you lean on it. Our complete connectors list shows where Tessie sits among the 54 live connectors in the web app.

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2. What you need

• Muse access. You need an account with access first, in the United States, Canada, or Japan, where Muse has launched.
• A Tesla. Tessie works with Model S, Model 3, Model X, and Model Y. Without a Tesla, this connector has nothing to read.
• A Tessie account. Tessie is a paid service, with a free trial and then a subscription or a one time payment. The Muse connector does not replace Tessie itself.
• A Tessie API token. You create one in Tessie API settings. Muse never asks for the token in chat, and you should never paste it into a chat message.
• Approvals set to ask me. Some Tessie commands move a real car, so set approvals before you connect anything. A command you did not approve is a car doing something you did not ask for.

3. How to connect it, step by step

The connection itself takes a few minutes. The token setup matters more, so run the steps in order and test with a read only request before you send any command.

1. Open Muse and go to Settings, then Connections. The connectors list lives there. What is printed there is what your account has, because rollout is staged and two accounts can see different lists on the same day.
2. Find Tessie in the connectors list and open it. If Tessie is not listed, your account has not received it yet. There is nothing to install and nothing you broke. Check again in a few days.
3. Create your Tessie API token. Open your Tessie account settings and go to the API settings page. Create a token there. This is the only place the token is created, and it is the only place you should enter it.
4. Connect through the link Muse gives you. Muse shares a connect link where you enter the token. Never paste the token into a chat message, even to Muse. If you already sent one in chat by mistake, create a fresh token and use that instead.
5. Set approvals to ask me. In Muse settings, set approvals so that any command that moves the car waits for you. Read only questions like battery level and location do not need the same treatment, but commands do.
6. Test with a read only request. Ask Muse for your battery level and range. Read the answer against the Tessie app. If it matches, the connection is good. Do not send a command on the first day.
7. Name your vehicle if you have more than one. Muse lists your vehicles and asks which one you mean when you have several and have not said. Tell it once which car is yours for daily use and the requests get shorter.

Copy this prompt

You are my Tesla assistant. Use my Tessie connector only.
Rules: you read the car state and answer questions. You never send a command to the car without my explicit approval, and you never turn a question into a command. If I ask what the battery is, tell me the number. Do not lock, unlock, honk, or precondition unless I asked for that exact action.
My car: [model, year, and which vehicle if you have more than one]
My routine: [usual departure time, usual charge limit, home charging setup]
Every evening, do this in order.
1. Tell me the battery level and the range, and whether that is enough for tomorrow.
2. Tell me if charging finished, and how much energy the session added.
3. Flag anything odd: battery lost while parked, a Sentry event, or a software update waiting.
4. End with the one thing I should do tonight, if anything.

4. What it actually does

The connector earns its place with five uses. Everything else is a variation on one of them.

Range for tomorrow, in one question

Ask Muse for the battery level and the range, and whether that covers tomorrow. This is the single highest value use, and it is the one to build a habit around. A good answer names the number, the distance you need, and the gap between them, and it takes ten seconds to read. Ask it in the evening and you find out before bed whether to plug in, instead of finding out in the morning when you are already late. The evening prompt above builds this into a nightly check that also covers charging and anything odd.

Charging, checked and explained

Ask Muse whether last night's charge finished, how much energy the session added, and what the charge limit is set to. This beats opening the app and reading a graph, because Muse answers the question behind the graph: did the car get what it needed. If you charge on a cheap overnight rate, ask Muse to check that charging started in the cheap window and stopped at your limit. A charge that ran at the wrong time is money quietly lost, and a charge that stopped early is range quietly lost. Both are worth catching the next morning, not the next week.

Phantom drain, caught early

Ask Muse how much battery the car lost while parked, and over how many hours. Phantom drain is the slow leak every Tesla owner watches, and a single number makes it visible: a car that lost 3 percent overnight is fine, and a car that lost 12 percent has something waking it up. Tessie tracks this over time, so ask Muse to compare this week with last week. A sudden jump is the signal to check what changed: a new software update, Sentry Mode left on somewhere busy, or the car parked in extreme cold. Catch it in days and the fix is small. Catch it in months and you have been paying for it all along.

Trips and battery health, over time

Ask Muse for the trip history and the battery picture over weeks and months: total energy charged, how the range compares with other cars like yours, and whether the battery is holding up. This is the use that turns Tessie from a remote control into a record. A single trip means little. A month of trips tells you what your driving actually costs, which routes eat range, and whether your battery is aging normally or faster than it should. If you ever sell the car, that record is also the proof a buyer wants: a battery with a documented history is worth more than a battery with a shrug.

Commands, when you mean them

Ask Muse to honk, flash the lights, lock the doors, precondition the cabin, or schedule a software update, and it sends the command to the car you named. Some commands run without asking, so be exact about which action you want: say lock the doors, not sort the car out. Muse reads the car state before a command when the state decides whether the action makes sense, so a request to precondition a car that is already warm gets a question instead of a wasted command. Our connectors list covers the other home and lifestyle connectors if you want to pair Tessie with the rest of your home.

Alerts that find you

Tessie watches for driving, charging, and Sentry events and can tell you when one happens. Ask Muse to flag Sentry events and software updates waiting, and to tell you why each one matters. A Sentry event at 3 in the morning is worth a look in the morning. A software update waiting for a week is worth scheduling on a night you are home. The point is not more notifications. The point is one short list, once a day, of the things that actually need you.

5. What it cannot do

The limits are honest and worth knowing before you lean on the connector.

• It cannot work without a Tessie account. Tessie is a paid service with a free trial. The Muse connector does not replace Tessie, and without a Tessie token there is nothing to connect.
• It cannot use your Tesla password. The connection runs on a Tessie API token you create in Tessie settings. Never share your Tesla password with Muse or with anyone else.
• It cannot turn a question into a command. Asking what the battery is will never lock the car or honk the horn. A command needs a clear request for that exact action.
• It cannot fix a bad token by retrying. If the token is invalid, the connection fails and the fix is a fresh token from Tessie settings, not asking Muse to try again.
• It cannot see a car you never connected. Only the vehicles on your Tessie account are visible. A car on another account, or a car with no Tessie setup, is invisible to it.
• It cannot promise the car will answer. A car that is asleep, out of signal, or mid update may not respond. If a command result is uncertain, Muse reads the car state again before trying anything else, instead of sending the command twice.

6. What to watch for

As of October 25, 2026, Tessie is a settled connector: still listed in the October 15 in app check, and unchanged by the October 7 iPad app launch and the October 23 Japan launch. There is no October update to how it works, so the habits around it still matter. Guard the token like a key, because that is what it is. It lives in Tessie settings, it is entered through the connect link only, and it never belongs in a chat message. If a token ever leaks, create a fresh one and the old one stops working.

Be careful with commands that move a real car. A honk at midnight and a cabin preconditioned on a hot day are small mistakes, but they are mistakes a neighbor notices. Keep commands on ask me approval until you trust the loop, and say the exact action you want. The failure mode you want is a command waiting for you, not a car doing something you did not ask for.

Remember that location is sensitive data. Tessie knows where your car is, where it has been, and when. That is the point of a tracker, and it is also the reason to think about who can ask Muse about your car. If you share your Muse account with family, decide together what car questions are fine and what stays private. The car does not keep secrets, so the account around it has to.

Finally, check the numbers against the Tessie app for the first week, especially any range figure you are about to rely on. A wrong range acted on fast is worse than a slow read you verified. Once the numbers match for a week, the evening check becomes a habit you can trust, and the connector starts paying for itself in mornings that go right.

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Frequently asked questions

What is Tessie?

Tessie is a Tesla companion app used by more than 500,000 drivers. It tracks trips, battery health, charging, and phantom drain, and it automates the car with schedules and triggers. The Muse connector reads your Tessie account and sends commands to your car.

Do I need a Tesla to use the Tessie connector?

Yes. Tessie works with Model S, Model 3, Model X, and Model Y. Without a Tesla on your Tessie account, the connector has nothing to read.

Does the Tessie connector cost extra?

Tessie itself is a paid service, with a free trial and then a subscription or a one time payment. That cost is separate from Muse. Check the Tessie pricing page before you connect.

Is it safe to give Muse my Tessie token?

You create the token in Tessie API settings and enter it through the connect link Muse gives you. Never paste the token into a chat message. If a token leaks, create a fresh one and the old one stops working.

Can Muse lock my car or honk the horn without asking?

Only if you asked for that exact action and your approvals allow it. Keep commands on ask me approval, and Muse waits for your tap before it sends anything to the car. A question about the battery never becomes a command.

Can I use the Tessie connector outside the United States, Canada, and Japan?

Not yet. Muse itself has launched in the United States, Canada, and Japan only. Join the waitlist and we will send you a fresh code on launch day in your country.

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