Zai
Zai (hellozai.com, formerly Assembly Payments / Assembly) is an Australian payments and Payments-as-a-Service provider headquartered in Melbourne. Zai gives platforms, marketplaces and vertical software companies a programmable way to onboard users, hold funds in managed wallet accounts, collect pay-ins (card, direct debit, BPAY, PayID), and disburse pay-outs across many parties in a single transaction flow. It is API-first: the Assembly API exposes wallet accounts, users, items, transactions, bank accounts, card accounts, fees, callbacks and batch disbursements, layered with Australia's New Payments Platform rails through dedicated Virtual Accounts / PayID and PayTo APIs, plus an Asynchronous API for long-running operations. Authentication is OAuth2 client-credentials (bearer tokens on PayTo), with a Live and Pre-live (sandbox) environment, webhooks with signature verification, and a developer dashboard. Positioned as the embedded-payments and marketplace-money-movement layer for the Australian market and platforms operating there.
Zai publishes 26 APIs on the APIs.io network, including Addresses API, Authentication API, Bank Accounts API, and 23 more. Tagged areas include Payments, Australia, Payment Gateway, Payment Processing, and Marketplace Payments.
The Zai catalog on APIs.io includes 1 event-driven AsyncAPI specification.
Zai’s developer surface includes authentication, documentation, API reference, getting-started guide, pricing, engineering blog, support, and 34 more developer resources.
Kin Score
APIs 26
Individual APIs this provider publishes, each with its own machine-readable definition.
Zai Addresses API
The Addresses API from Zai — 1 operation(s) for addresses.
Zai Authentication API
The Authentication API from Zai — 1 operation(s) for authentication.
Zai Bank Accounts API
The Bank Accounts API from Zai — 6 operation(s) for bank accounts.
Zai Batch Transactions API
The Batch Transactions API from Zai — 2 operation(s) for batch transactions.
Zai BPay Accounts API
The BPay Accounts API from Zai — 3 operation(s) for bpay accounts.
Zai Callbacks API
The Callbacks API from Zai — 4 operation(s) for callbacks.
Zai Card Accounts API
The Card Accounts API from Zai — 4 operation(s) for card accounts.
Zai Charges API
The Charges API from Zai — 4 operation(s) for charges.
Zai Companies API
The Companies API from Zai — 2 operation(s) for companies.
Zai Direct Debit Authorities API
The Direct Debit Authorities API from Zai — 2 operation(s) for direct debit authorities.
Zai Disbursements API
The Disbursements API from Zai — 7 operation(s) for disbursements.
Zai Fees API
The Fees API from Zai — 2 operation(s) for fees.
Zai Item Actions API
The Item Actions API from Zai — 8 operation(s) for item actions.
Zai Items API
The Items API from Zai — 9 operation(s) for items.
Zai Marketplaces API
The Marketplaces API from Zai — 1 operation(s) for marketplaces.
Zai Pay I Ds API
The PayIDs API from Zai — 3 operation(s) for payids.
Zai PayTo Agreements API
Agreement Management APIs
Zai PayTo Payments API
Payment Initiation APIs
Zai Requests API
The Requests API from Zai — 2 operation(s) for requests.
Zai Sub Wallets API
The Sub-wallets API from Zai — 9 operation(s) for sub-wallets.
Zai Token Auth API
The Token Auth API from Zai — 1 operation(s) for token auth.
Zai Tools API
The Tools API from Zai — 1 operation(s) for tools.
Zai Transactions API
The Transactions API from Zai — 7 operation(s) for transactions.
Zai Users API
The Users API from Zai — 9 operation(s) for users.
Zai Virtual Accounts API
The Virtual Accounts API from Zai — 5 operation(s) for virtual accounts.
Zai Wallet Accounts API
The Wallet Accounts API from Zai — 6 operation(s) for wallet accounts.
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Postman Collections 4
Ready-to-run Postman collections for exercising this provider's APIs.
Open Collections 4
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
Assembly API
OPEN COLLECTIONAsynchronous API
OPEN COLLECTIONPayTo
OPEN COLLECTIONVirtual Accounts and PayIDs
OPEN COLLECTIONEvent Specifications 1
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Zai Webhooks
ASYNCAPISecurity Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Scopes 1
OAuth scopes governing access to this provider's APIs.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Resources
Get Started 4
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 5
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 7
Pagination, idempotency, versioning, errors, and events
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Build 5
SDKs, sample code, and the tooling you integrate with
Access & Security 5
Authentication, authorization, and security posture
Operate 2
Status, limits, changes, and where to get help
Commercial 3
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
Other 5
Properties that don't map to a standard resource type
Source (apis.yml)
Work with this as data
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