Increase
Increase is a bank-grade payments and financial infrastructure platform that exposes a single REST API for moving and holding money in the United States - ACH transfers, real-time payments (RTP and FedNow), domestic and international wires, physical and mailed checks, deposit accounts and account numbers, card issuing and card acquiring, ledgering and bookkeeping, KYC/KYB entities, and lockboxes. Increase connects directly to the Federal Reserve and card networks through partner banks, and every state change is delivered as an Event over HTTP webhooks. The API is documented with a public OpenAPI 3.1 spec (https://api.increase.com/openapi.json) and Stainless-generated SDKs for Python, TypeScript, Java, Kotlin, Go, Ruby, PHP, and C#. Base URL https://api.increase.com with a sandbox at https://sandbox.increase.com.
APIs
Increase Accounts API
Create, retrieve, update, list, and close deposit Accounts held at Increase's partner banks, and read real-time available and current balances. The root container for all money ...
Increase Account Numbers API
Generate and manage Account Numbers (routing + account number pairs) that can receive ACH, wire, and check deposits, configure inbound ACH/check controls, and register External ...
Increase Cards API
Issue and manage virtual and physical commercial Cards - create, update, list, retrieve sensitive card details via a secure iframe, set PINs, and order Physical Cards fulfilled ...
Increase Card Payments API
Follow the full lifecycle of a card authorization and settlement via Card Payments and Card Purchase Supplements, approve or decline authorizations in real time through Real-Tim...
Increase ACH Transfers API
Originate credit and debit ACH Transfers over the FedACH network, approve or cancel pending transfers, handle Inbound ACH Transfers with returns and notifications of change, and...
Increase Wire Transfers API
Send domestic Fedwire Wire Transfers, approve or cancel them, receive and reverse Inbound Wire Transfers, and request funds from counterparties with Wire Drawdown Requests.
Increase Real-Time Payments API
Send and receive instant, 24/7 payments over The Clearing House RTP network via Real-Time Payments Transfers and Inbound Real-Time Payments Transfers, with irrevocable, immediat...
Increase Checks API
Print and mail physical Check Transfers (or send them electronically), place stop payments, deposit images of received checks with Check Deposits, and process Inbound Check Depo...
Increase Transactions API
Read the immutable ledger of settled Transactions, in-flight Pending Transactions (holds), and Declined Transactions, each with a typed source object explaining exactly what mov...
Increase Entities API
Onboard the people and businesses that own Accounts - create, update, archive, and list Entities (natural persons, corporations, trusts), manage Beneficial Owners, and attach Su...
Increase Events and Webhooks API
Subscribe to state changes across every Increase resource. Every change emits an Event; Event Subscriptions deliver those Events to your HTTPS endpoint as signed (Standard Webho...
Increase Bookkeeping API
Build a double-entry sub-ledger on top of Increase money movement. Create Bookkeeping Accounts, post transactionally-applied Bookkeeping Entry Sets, read individual Bookkeeping ...
Increase Card Profiles and Digital Wallets API
Control the appearance and provisioning of issued cards - Digital Card Profiles (Apple Pay / Google Pay branding), Physical Card Profiles (print artwork), and Digital Wallet Tok...
Increase Lockboxes API
Receive paper checks and mail at a physical Lockbox address tied to an Account. Create and manage Lockboxes, and retrieve scanned Inbound Mail Items for automated receivables pr...
Increase Simulations API
Drive the sandbox deterministically. Simulation endpoints let you trigger inbound ACH/wire/RTP/check activity, settle or decline card authorizations, advance transfer states, an...