Before the Lot
Calculate car prices, compare dealer quotes, and understand state tax rules for buying or leasing.
Calculates out-the-door car prices with state taxes and fees, checks dealer quotes for accuracy, compares multiple quotes, analyzes lease vs. buy decisions, and provides state-specific rules on doc fees, trade-in credits and rebate taxation.
Try asking Muse: "Check if a dealer's quote is fair by comparing it against my budget and other quotes I've received."
See the most upvoted connectors
Source: Found in the official MCP Registry (com.beforethelot/before-the-lot) · First listed October 30, 2026
Last 24 hours
Each bar is one check, every 15 minutes. Green means it answered. Last checked 1 h ago.
Is it safe to connect?
What Muse can see: It does not ask you to sign in, so it cannot see your accounts. It only sees what Muse sends it from your request.
Before it acts: Read what Muse plans to do before you approve it, and remove the app from Muse when you stop using it.
musedirectory.ai is not part of Meta. More about how Muse handles your information
How to add it to Muse
Not in Muse's Connectors list yet, but Muse can still use it. Copy the request below and paste it into Muse. Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
https://beforethelot.com/mcpNot in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
Also use it in ChatGPT or Claude
Before the Lot is a remote MCP server, so any assistant that can add a custom connector by link can use it. Same link, same tools.
Add it to ChatGPT
- 1
Open ChatGPT settings
In ChatGPT, open Settings, then Connectors (called Apps & Connectors on some accounts).
- 2
Turn on developer mode
Under Advanced settings, switch on Developer mode. That is what lets you add a connector by link.
- 3
Create the connector
Choose Create, give it a name, paste the link as the MCP server URL, and save. If it needs a sign-in, ChatGPT asks for it here.
- 4
Use it in a chat
Start a chat, open the tools menu, pick the connector, and ask. ChatGPT asks before it runs a tool the first time.
Custom connectors need a paid ChatGPT plan, and on Team, Enterprise and Edu accounts only an admin can add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in ChatGPT
Add it to Claude
- 1
Open Claude settings
In Claude, open Settings, then Connectors.
- 2
Add a custom connector
Choose Add custom connector, give it a name, and paste the link.
- 3
Connect and use it
If it needs a sign-in, Claude sends you to it. Then turn the connector on in a chat from the tools menu and ask.
Custom connectors are available on paid Claude plans; on Team and Enterprise accounts an admin may need to add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in Claude
https://beforethelot.com/mcpWhat people ask Muse to do
Technical details: safety screening, tools, response time and recent checks
Response time at the last check: 366ms. Worked in n/a of checks over 30 days.
Screening · October 30, 2026
Screened, no issues found
Screening looks for known threats and hidden instructions at the time of the check, and runs again weekly and whenever the tool list changes. It cannot see the server's code, so only connect what you need and review what Muse asks to do. How screening works.
Tools · 16
what_can_i_affordWorks out the budget ceiling from a monthly payment: the most that can be financed, the highest out-the-door price after the trade-in tax credit, that ceiling as dealers quote it (before the trade-in credit), and the vehicle price it leaves after the state's tax and typical fees.out_the_doorItemizes an out-the-door estimate for a vehicle price: rebates, doc fee, add-ons, the state's sales tax (with its rules on rebates and caps), title and registration. Optionally adds a trade-in (and the tax it saves where the state credits it), a down payment and a loan for the pacheck_quoteReads a dealer's out-the-door quote, pasted as text (up to 8 KB) or given as line items, and checks it line by line: the out-the-door total, the doc fee against the state's cap (and capped service fees such as Ohio's $50 convenience fee), the tax line against the state's rate, ficompare_quotesRanks two to ten itemized dealer quotes by out-the-door price, with each one's gap to the lowest and to the walk line, and (with a state) each doc fee against the state's cap.rebate_vs_aprCompares a maker's cash rebate taken with the person's own loan against the maker's special APR (with any cash that combines with it): each side's payment, interest and total, the difference, the own-loan rate where the two cost the same, and the sales tax a rebate saves in stateloan_paymentThe monthly payment, total interest and total paid on a car loan, with what a term over 60 months adds in interest compared with 60.lease_checkWorks a lease quote from MSRP, selling price, residual and money factor (or the lease's APR): the depreciation and rent charges, the payment with tax (and a state lease tax on top where there is one, such as Pennsylvania's 3%; Alabama's 1.5% and West Virginia's 5% lease-payment rrefinance_checkCompares a car loan as it stands with a new loan at a quoted rate, by default over the same months left so a lower payment cannot hide a longer loan, with any fees counted: the new payment, the monthly difference and the total interest saved or added.trade_in_positionFrom written trade-in offers and the payoff: the best offer still open (the floor a dealer's trade number is compared with), the equity or negative equity, and, with a state and vehicle price, the sales tax the trade saves where the state credits it.payoff_planA payoff plan for a car loan, for paying it off early with an extra payment each month: the months and total interest at the regular payment, and with an extra amount toward principal each month (optionally for only the first so many months, or skipping some), with the months andget_methodThe Before the Lot method: an overview and its seven stages (what to collect, what each produces, which guides, tools and email templates apply, and when the stage is done). Pass a stage id for one stage.state_rulesA state's rules on dealer doc fees, sales tax (state rate, local add-on range, cap), trade-in tax credit, how a maker's rebate is taxed, and cancellation rights where on file, each with its source, as-of date and confidence, plus the link to the state's page.dealer_emailFills one of the six Before the Lot email templates (request a quote, make an offer, a competing quote, confirm the deal, decline, tell a lender) with the details given and returns the subject and body. Details are numbers and short labels; contact details are refused.offers_pageWhere a maker lists its own current offers (and a model's own page where one can be built), with whether the maker lists national offers at all.desk_scriptThe Before the Lot line for a moment at the desk. Pass a script id (monthly-payment, trade-first, down-payment, credit-check, numbers-changed, preinstalled-add-ons, initial-worksheet, decide-today, beat-my-rate, fi-product, only-a-month, paint-or-markup, below-invoice, trade-beloplan_linkBuilds a Before the Lot planner link that opens with the numbers given already filled in. The plan travels in the link itself, so nothing is stored. Numbers and short labels only; names, phone numbers and emails are refused.Link
https://beforethelot.com/mcpQuestions about Before the Lot in Muse
How do I connect Before the Lot to Muse?
Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use Before the Lot to help me. It is a free service with an MCP server at https://beforethelot.com/mcp. It does not need an API key. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
Is Before the Lot working right now?
At the last check (October 30, 2026, 04:21 UTC) the endpoint was working, answering in 366ms. It is checked every 15 minutes.
Is Before the Lot safe to connect to Muse?
It was screened on October 30, 2026 with the result "screened, no issues found". Screening checks the domain against threat feeds and reads the tools for hidden instructions and requests for passwords or card numbers. It cannot see the server's code, so grant only the access you need.
What can Before the Lot do in Muse?
It exposes 16 tools, including what_can_i_afford, out_the_door, check_quote, compare_quotes. For example, you could ask Muse: "Check if a dealer's quote is fair by comparing it against my budget and other quotes I've received."
Follow Before the Lot
Made this app? Claim it or get a status badge
Is this yours?
This listing was added from public sources (Found in the official MCP Registry (com.beforethelot/before-the-lot)). If you build Before the Lot, claim it to correct the details and get your badge.
Paste this on your site or README. It always shows the latest check.
<a href="https://musedirectory.ai/connector/before-the-lot"><img src="https://musedirectory.ai/badge/before-the-lot.svg" alt="Before the Lot on musedirectory.ai" width="236" height="40"></a>