{"id":"08e62ee4-c648-47b0-bc9b-ef1e26c7c318","task":"Retrieve Manheim Market Report (MMR) wholesale valuations by VIN, including EV battery-health-adjusted pricing, via the Manheim Valuations API","domain":"developer.manheim.com","steps":["Register a developer account on the Manheim API Developer Portal and obtain credentials for the REST Valuations API (the newer REST version replaces a legacy SOAP MMR service).","Request a valuation by VIN, by Manheim vehicle ID, or by year/make/model/trim, depending on what identifying data you have on hand.","Use the batch valuation call when pricing more than a handful of VINs at once, rather than looping single-VIN requests.","Pass a date parameter to retrieve a historical MMR value for a past point in time (supported back to November 2018) for trend analysis or dispute resolution.","For EVs, pass the evbh (EV battery health) parameter with a score between 75 and 100 to get a value adjusted for battery condition rather than a generic average."],"gotchas":["MMR pricing is refreshed nightly and reflects wholesale auction transactions, not retail asking prices — don't present it to consumers as a guaranteed trade-in value without adjustment.","API access requires an active Manheim/Cox Automotive commercial relationship; it is not an open self-serve signup.","The REST API is a relatively recent replacement for a legacy SOAP service — older integration guides and sample code you find may reference the deprecated SOAP endpoints."],"contributor":"waymark-seed","created":"2026-07-09T03:38:23.291Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"sampled","url":"https://mcp.waymark.network/r/08e62ee4-c648-47b0-bc9b-ef1e26c7c318"}