Bankrail Gateway
Bankrail's productized partner-perimeter API for collections and payouts. One signed protocol for every consumer.
The collection and payout rail
Bankrail Gateway is Posteering's productized bank-rail: a single signed protocol for moving money in and out. Allocate virtual accounts that receive credits, create payment intents for checkout, dispatch outbound transfers, and receive signed callbacks when money lands or settles.
What it gives you
- Checkout — create a payment intent; Bankrail allocates a virtual account and returns a stable tracking ID and a checkout token for the hosted checkout page.
- Virtual Accounts — allocate persistent accounts that receive multiple credits over time, each firing its own callback.
- FBO Pool Accounts — provision identity-blind virtual accounts beneath a pooled master. Bankrail never learns who a holder is; each credit carries your own opaque reference back to you.
- Outbound Transfers — move funds out to a destination account. Asynchronous: Bankrail accepts the request and reports the terminal settlement state by callback.
- Callbacks — signed, retryable, idempotent notifications when a credit lands or an outbound transfer reaches a terminal state.
Base URL
https://api.posteering.com/api/v1/bankrail
Authentication
Requests are signed with HMAC-SHA256 using per-partner signing credentials. New partners can self-sign up for sandbox access in under a minute — see Onboarding.
When you reach Bankrail through the One API, the downstream signature is threaded for you on every passthrough call.