Creates a Stripe SetupIntent and returns client_secret for Stripe.js confirmation. After the client confirms with Stripe.js, call /attach to save the PM to Arcus. R4: raw card/bank credentials are NEVER accepted here; use Stripe.js for collection. Idempotent via Idempotency-Key header.
Documentation Index
Fetch the complete documentation index at: https://docs.arcuserp.com/llms.txt
Use this file to discover all available pages before exploring further.
API key issued per entity via Settings > Developers > API Keys.
Each key carries scopes (e.g. orders:read, products:write).
Bearer token format: Authorization: Bearer ark_live_ent_Test keys use ark_test_ent_. Both are issued per entity
via Settings > Developers > API Keys.
card, us_bank_account