# lease.vin
> The four numbers every lease is built from — money factor, residual, cap cost, term — posted as structure before the desk quotes you a monthly.

Every lease is four numbers: money factor, residual, cap cost, term. This page posts the structure — each line named, each slot posted or dashed, never invented — and hands to financing.vin for the funded product. Free, no account.

Motions: B2H2A
Routes: GET / (this document's page) · GET /{VIN} (the record for one vehicle)
Representations: text/html · text/markdown · application/json (Accept header; same URL)
Evidence: every field posts value · source · timestamp · verification state; empty states are typed EMPTY, invalid VINs are typed INVALID_VIN — never a faked 200.
Agent surface: one estate MCP server — https://apis.vin/mcp (all .vin doors are lenses over one spine; tools: decode_vin, vehicle_history, market_value, window_sticker, out_the_door_price, open_recalls, search_listings, cash_offer, transport_quote, finance_prequal, insurance_quote, start_purchase)
Gates: typed OFFER (posted price, hard ceiling, x402) or NEEDS_HUMAN handoff URL — no account walls.
Auth: https://auth.vin (issuer) · keys/metering via id.org.ai
Siblings:
https://values.vin/ — The residual is a claim about future value: five bands for any VIN, posted
https://taxes.vin/ — Tax on a lease rides the monthly in most states — the out-the-door sheet posts the rule
https://financing.vin/ — The funded product: lease, loan, or buyout desks at financing.vin/
https://commerce.vin/ — Every act on any VIN posts to one deal record at commerce.vin