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OpenAPITotal Cost1 tools Break-Even1 tools
EVCompare
Brand-neutral EV-vs-gas total cost of ownership and break-even mileage calculators
Unify Dynamics LLC
Tools2read-only
Sign-inNoneno account, no key
Data keptNoneprocessed in memory
PriceFreeoptional Pro limits
StatusLiveMCP + REST
Works withMCP · RESTany agent
Try asking
Real questions, and the tools your agent calls to answer them.
Compare total cost of ownership for my EV and my gas car over 8 years at 12,000 miles a year
Tools called
ev_gas_tco_calculatorAt what mileage does a $10,000 pricier EV pay for itself?
Tools called
ev_gas_breakeven_mileageAbout
EVCompare is a fully local, brand-neutral EV-vs-gas cost calculator toolkit — estimates only, never a purchase recommendation, and it never names or looks up a specific vehicle make or model. ev_gas_tco_calculator takes an EV's price, efficiency (kWh/100mi), and electricity rate, plus a gas car's price, MPG, and gas price, an annual mileage, and a number of years, and computes each vehicle's total cost of ownership (purchase price + fuel/energy cost + maintenance cost, using a documented, overridable maintenance-cost-per-mile assumption reflecting that EVs commonly cost meaningfully less to maintain), reporting which is cheaper overall and by how much. ev_gas_breakeven_mileage takes the same purchase-price and per-mile cost inputs and computes the exact mileage at which a price difference between the two vehicles is offset by a running-cost difference, correctly handling every direction: one vehicle ahead immediately, a genuine crossover mileage in either direction, or never catching up. Every response carries a disclaimer field. Keyless; fully local; zero upstream calls; nothing stored.
Sources: Computed locally / hand-curated, using published general maintenance-cost-difference assumptions (e.g. Consumer Reports / U.S. Department of Energy EV ownership-cost analyses); fully local, zero upstream calls
Privacy
The publisher, Unify Dynamics LLC, states that tool inputs are processed in memory and not retained.
Data not collectedNo account, no profile, no stored prompts or results.
What it can do
2 tools, grouped by job. Every one is read-only or compute-only.
- Ev gas tco calculatorReal total-cost-of-ownership math for a user-specified EV vs.
- Ev gas breakeven mileageAt what mileage does a higher EV purchase price get offset by its lower running cost per mile — breakeven_miles = price premium / per-mile savings.
Information
PublisherUnify Dynamics LLC
CategoryHome & lifestyle
LanguagesEnglish
Built forGlobal
CompatibilityAny MCP client · any agent · REST
Version0.1.0
MCP endpoint
https://evcompare.connectorbay.com/mcpREST APIopenapi.json
CountryWorldwide
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Documentation
Back to topEstimates only — not a purchase recommendation
EVCompare is a brand-neutral EV-vs-gas cost calculator for learning and general planning. It is never a
purchase recommendation, a financing offer, or a guarantee of any specific vehicle's real-world cost. It
takes the vehicle specs and prices you supply — it never names, looks up, or recommends a specific vehicle
make or model. Every tool response carries a disclaimer field restating this.
What EVCompare is for
The math that comes up when comparing an EV you're considering against a gas car you're considering — which one actually costs less to own over time, and at what mileage a pricier EV's purchase price gets paid back by its lower running cost — answered with real, transparent computation from the numbers you give it, with no upstream calls and nothing about the user stored.
What it does
ev_gas_tco_calculator takes an EV's price, efficiency (kWh/100mi), and electricity rate, plus a gas car's
price, MPG, and gas price, an annual mileage, and a number of years, and computes each vehicle's total cost of
ownership — purchase price plus fuel/energy cost plus maintenance cost — using a documented, overridable
maintenance-cost-per-mile assumption (EVs commonly cost meaningfully less to maintain). It reports which
vehicle is cheaper overall and by how much. ev_gas_breakeven_mileage takes the same purchase prices and
per-mile cost inputs and computes the exact mileage at which a price difference between the two vehicles is
offset by a running-cost difference — handling every direction: the EV ahead immediately, the EV catching up
over distance, or never catching up.
What it is not
Not a vehicle recommendation engine and not a financing calculator. It does not know insurance costs, depreciation/resale value, registration fees, home-charger installation cost, or tax credits/rebates unless you fold them into the purchase price yourself. Both tools do genuine arithmetic from the numbers you give them, but the real-world numbers for any two specific vehicles vary — check manufacturer specs and current local fuel/electricity prices before making a purchase decision.
Privacy policy
Back to topEVCompare — Privacy Policy
Effective 28 September 2026. Unify Dynamics LLC ("we", "us"), Menlo Park, California.
What EVCompare is. EVCompare is a connector (an MCP server and REST API) that AI assistants and personal agents call on your behalf for a brand-neutral EV-vs-gas total-cost-of-ownership and break-even-mileage calculator. EVCompare is estimates only and is never a purchase recommendation. You interact with your assistant; the assistant sends us only the vehicle specs and prices needed for that one calculation — never a vehicle make, model, or identifying information.
What we receive. The arguments of each tool call — for example a purchase price, an efficiency (kWh/100mi or MPG), an electricity or gas price, an annual mileage, or a number of years — the technical headers needed to serve the request (an IP address or a client identifier supplied by the assistant, and a Pro API key if you have one), and standard server logs.
Everything is answered locally and nothing is stored. EVCompare makes zero upstream/network calls: every response is arithmetic computed directly from the arguments given plus a small set of documented, overridable general assumptions. No request is forwarded to any third party, and no query is logged in request bodies, recorded, or used to train anything.
What we do not receive or store. We do not receive your conversation with the assistant, your name, or any specific vehicle make/model/VIN — the tools work from generic specs only. We do not build a profile from your queries: each request is answered independently and nothing carries over between requests. Rate-limit counters (a client identifier and timestamps) are held in memory for at most 24 hours. Hosting-provider access logs, which contain IP addresses and request paths but not request bodies, are retained for up to 30 days for security and abuse prevention.
Sub-processors. None — every calculation runs locally on our server with no external dependency. Hosting: Vercel (United States regions).
Legal bases and your rights. Our processing is necessary to provide the service you request through your assistant. Because we store no personal data beyond short-lived logs, requests to access, correct or delete personal data are usually satisfied automatically; you can still contact agent@connectorbay.com and we will respond within 30 days. We do not sell or share personal information and do not use your data to train models.
Children. EVCompare is a general-audience service operated by the adult using the assistant.
Changes. We will post changes here with a new effective date.
Terms of service
Back to topEVCompare — Terms of Service
Effective 28 September 2026. These terms govern use of the EVCompare connector ("the Service") operated by Unify Dynamics LLC ("we", "us").
- The Service. EVCompare returns total-cost-of-ownership and break-even-mileage figures computed from user-supplied vehicle specs and prices, plus a documented, overridable maintenance-cost assumption. It is brand-neutral: it never names, looks up, or recommends a specific vehicle make or model. It is accessed through an AI assistant or directly over MCP or HTTP.
- Estimates only — not a purchase recommendation. EVCompare is not a car dealer, a financing provider, or a vehicle-recommendation service. Nothing the Service returns is a guarantee of any specific vehicle's real-world cost, resale value, or suitability. Actual insurance, depreciation, registration fees, tax credits, and maintenance costs vary by vehicle, location, and driver, and are not accounted for beyond the numbers you supply. Never rely on the Service in place of your own research and real quotes on the specific vehicles you are considering.
- No liability for financial decisions. To the fullest extent permitted by law, Unify Dynamics LLC is not liable for any financial loss arising from or related to any vehicle purchase decision made with or without reference to the Service. Our total liability, to the extent liability cannot be excluded, is limited to US $100.
- Figures change and vary. Maintenance-cost-per-mile defaults reflect a commonly-cited published assumption that you can override; actual fuel, electricity, and maintenance costs vary by location, time, and vehicle and are not tracked or updated by the Service in real time.
- Acceptable use. Automated use within the published rate limits is welcome.
- Availability. The Service is provided "as is" without warranty. We may change, limit or discontinue it at any time.
- Data. Our Privacy Policy describes what we process. In short: your query is answered by direct computation from generic vehicle specs, and nothing is stored.
- Pro keys. Optional Pro API keys are issued at our discretion, are personal to the holder and may be revoked for abuse.
- Governing law. California law; venue in San Mateo County, California.
- Contact. Unify Dynamics LLC · agent@connectorbay.com · https://connectorbay.com/evcompare
Support
Back to topEVCompare support
Email agent@connectorbay.com. We answer within two business days.
- MCP endpoint:
https://evcompare.connectorbay.com/mcp - REST API:
https://evcompare.connectorbay.com/openapi.json - Live status: https://evcompare.connectorbay.com/health
When you report a problem, include the question you asked your agent, roughly when, and which agent you used (for example Claude, ChatGPT or Gemini). Never send us passwords, account numbers or ID numbers. EVCompare never asks for them.