# Definitions
Canonical URL: https://mbretrofit.it/guides/api/seed/definitions


Lists the same server-side definition catalogue used by the seed-key workspace,
including Aston Martin EZS213 Rel\_21. Each row includes its exact `id`, ECU
name, aliases, access level, seed/key byte lengths, provider and
`default_credit_cost`. Algorithm parameters are never returned.

Use the row's `id` as `definitionId` in quote and generation requests. The default
cost does not include account-specific overrides or waivers. Call
`POST /seed/quote` to get your actual credit cost.