List selectable verification methods
Returns the methods accepted by a party’s signVerification and a document’s openVerification, with display labels. signVerification runs before the party signs; openVerification runs before the document opens. null on either means no verification, so it isn’t listed.
Same rule as /helpers/signature-methods: build pickers from this rather than hard-coding, since the eID-backed methods become available as those schemes go live per market.
Authorizations
Personal API key, e.g. Authorization: Bearer sajn_sk_.... Not scope-limited — acts as the issuing user.
Headers
API version for this request. Without it, the request uses the organization's default version; an organization without a default is pinned to the latest version by its first request.
2026-09, 2026-10 ID of the workspace this request acts in, from GET /api/v1/workspaces. Without it, an API key acts in its default workspace. The token's user must be a member of the workspace; an OAuth token only accepts the workspace it was granted for. A workspace that doesn't exist or can't be reached returns 403 WORKSPACE_ACCESS_DENIED.

