Account identifier. Newly created V3 Accounts use a 22-character Wingspan ID; migrated Accounts may retain a 24-character lowercase Mongo ObjectId.

The regulated entity type backing the Account. Mutable: an Account can evolve in place (e.g., from SoleProp to LlcSCorp to SCorp). The Account.id survives, but a new entity record is provisioned at the bank partner under the stable Account ID. See POST /platform/accounts/{accountId}/change-entity-type.

Aligned with W-9 Box 3 selections. Single-member LLCs map to SoleProp per IRS disregarded-entity treatment; the Llc* variants are multi-member LLCs distinguished by elected tax classification.

Transfer keeps existing financial accounts when supported. Reissue opens new financial accounts and closes the old ones.

Select the Account for an Account-scoped operation. A direct ServiceAccount API key MUST supply this header, and the target must be within the ServiceAccount owner's or Authorization grant's Account boundary. A Person bearer may select an Account on which it has an active Stakeholder, and an Account session may select its bound Account (or a descendant only when the session explicitly includes descendants).

Optional idempotency token for authenticated POST and PATCH requests. Reusing the same key and body returns the cached response for 24 hours, except credential operations that explicitly document a 409 because one-time secret material is never cached; reusing it with a different body returns 409 IdempotencyKeyConflict. Use 1-255 printable ASCII characters.

Generated from available response content types