Assembly Payments
Assembly Payments was an Australian payments platform founded to give marketplaces, platforms and businesses embedded payment processing, digital wallets, escrow-style payment workflows and real-time payouts through an API. According to the company's own About page, Assembly Payments became the first non-bank to launch real-time payments in Australia and later merged with CurrencyFair to become Zai; assemblypay.com now redirects to hellozai.com, and the developer portal at developer.hellozai.com (still introduced as 'The Assembly Payments Developer Portal') documents the Zai payments API for payment processing, wallets, PayTo, payouts and workflow automation.
Assembly Payments publishes 31 API contracts indexed on the APIs.io network, including Webhooks API, Addresses API, Authentication API, and 28 more. Tagged areas include Company, Payments, Fintech, Marketplace, and Digital Wallet.
The Assembly Payments catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.
Assembly Payments’ developer surface includes sandbox, getting-started guide, authentication, documentation, API reference, engineering blog, pricing, and 37 more developer resources.
What this lets a business do 1
Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →
Kin Score
Markets this provider is in provisional
The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.
| Market | Position | Depth | Registered MCP server | Declares compatibility |
|---|---|---|---|---|
| Australia AFS, Credit and ADI Registers (ASIC + APRA licensing) | core | 4.0 (thin) | - | - |
Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.
Standards implemented 2
Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.
APIs 31
Individual APIs this provider publishes, each with its own machine-readable definition.
Webhooks API
Configure and manage webhook subscriptions and delivery for Zai/Assembly platform events.
Assembly Payments Addresses API
The Addresses API from Assembly Payments — 1 operation(s) for addresses.
Assembly Payments Authentication API
The Authentication API from Assembly Payments — 1 operation(s) for authentication.
Assembly Payments Bank Accounts API
The Bank Accounts API from Assembly Payments — 6 operation(s) for bank accounts.
Assembly Payments Batch Transactions API
The Batch Transactions API from Assembly Payments — 2 operation(s) for batch transactions.
Assembly Payments BPay Accounts API
The BPay Accounts API from Assembly Payments — 3 operation(s) for bpay accounts.
Assembly Payments Callbacks API
The Callbacks API from Assembly Payments — 4 operation(s) for callbacks.
Assembly Payments Card Accounts API
The Card Accounts API from Assembly Payments — 4 operation(s) for card accounts.
Assembly Payments Charges API
The Charges API from Assembly Payments — 4 operation(s) for charges.
Assembly Payments Companies API
The Companies API from Assembly Payments — 2 operation(s) for companies.
Assembly Payments Direct Debit Authorities API
The Direct Debit Authorities API from Assembly Payments — 2 operation(s) for direct debit authorities.
Assembly Payments Disbursements API
The Disbursements API from Assembly Payments — 7 operation(s) for disbursements.
Assembly Payments Failed NPP Payment Details API
The Failed NPP Payment Details API from Assembly Payments — 1 operation(s) for failed npp payment details.
Assembly Payments Fees API
The Fees API from Assembly Payments — 2 operation(s) for fees.
Assembly Payments Item Actions API
The Item Actions API from Assembly Payments — 8 operation(s) for item actions.
Assembly Payments Items API
The Items API from Assembly Payments — 9 operation(s) for items.
Assembly Payments Jobs API
The Jobs API from Assembly Payments — 2 operation(s) for jobs.
Assembly Payments Marketplaces API
The Marketplaces API from Assembly Payments — 1 operation(s) for marketplaces.
Assembly Payments Pay IDs API
The PayIDs API from Assembly Payments — 3 operation(s) for payids.
Assembly Payments PayTo Agreements API
Agreement Management APIs
Assembly Payments PayTo Payments API
Payment Initiation APIs
Assembly Payments Requests API
The Requests API from Assembly Payments — 2 operation(s) for requests.
Assembly Payments Status API
The Status API from Assembly Payments — 1 operation(s) for status.
Assembly Payments Sub Wallets API
The Sub-wallets API from Assembly Payments — 9 operation(s) for sub-wallets.
Assembly Payments Token Auth API
The Token Auth API from Assembly Payments — 1 operation(s) for token auth.
Assembly Payments Tools API
The Tools API from Assembly Payments — 1 operation(s) for tools.
Assembly Payments Transaction supplementary data API
The Transaction supplementary data API from Assembly Payments — 1 operation(s) for transaction supplementary data.
Assembly Payments Transactions API
The Transactions API from Assembly Payments — 7 operation(s) for transactions.
Assembly Payments Users API
The Users API from Assembly Payments — 9 operation(s) for users.
Assembly Payments Virtual Accounts API
The Virtual Accounts API from Assembly Payments — 5 operation(s) for virtual accounts.
Assembly Payments Wallet Accounts API
The Wallet Accounts API from Assembly Payments — 7 operation(s) for wallet accounts.
Scroll for all 31
Agent Skills 5
Packaged agent skills for driving this provider's APIs from an AI assistant.
assembly-payments-marketplace-payment
AGENT SKILLassembly-payments-payto-agreement
AGENT SKILLassembly-payments-refund-or-cancel
AGENT SKILLassembly-payments-wallet-payout
AGENT SKILLassembly-payments-webhook-setup
AGENT SKILLAssembly Payments API pricing
Prices published by Assembly Payments.
| Plan | Price |
|---|---|
| Standard | 1.5% + A$0.30 |
| Customised | Contact Sales |
Plan details, limits and sources →
Rate limits
- Pre-live API call limit: For your testing purposes, we limit API calls in Pre-live to 60 minutes.
Pricing Plans 1
Published pricing tiers and plan structures.
Rate Limits 1
Documented rate limits and quota policies.
Assembly Payments Rate Limits
RATE LIMITSService Levels 1
Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.
Semantic Vocabularies 1
JSON-LD contexts and semantic vocabularies used across these APIs.
Assembly Payments Context
JSON-LDSpectral Rules 1
Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.
Assembly Payments API Rules
SPECTRALOpenAPI Overlays 7
Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.
Assembly Payments Api Overlay
GENERATEDAssembly Payments Payto Api Overlay
GENERATEDAssembly Payments Webhooks Api Overlay
GENERATEDScroll for all 7
JSON Schema 31
Standalone JSON Schema definitions for this provider's data models.
AgreementDetailsResponse
JSON SCHEMAAmendAgreementDetailsRequest
JSON SCHEMAbank_account_requestBody_au
JSON SCHEMAcallbacks
JSON SCHEMAcharge_requestBody
JSON SCHEMAderegister_pay_id
JSON SCHEMAInitiatePaymentRequest
JSON SCHEMAInitiatePaymentResponse
JSON SCHEMAInitiatePaymentStatusResponse
JSON SCHEMAitem_requestBody
JSON SCHEMAJob
JSON SCHEMAJobs
JSON SCHEMAmake_payment_requestBody
JSON SCHEMAnpp_last_domestic_leg_disbursement
JSON SCHEMAnpp_last_domestic_leg_requestBody
JSON SCHEMApay_id_request
JSON SCHEMApay_id
JSON SCHEMApaymentData
JSON SCHEMAsingle_item
JSON SCHEMAstatus
JSON SCHEMAsupplementaryData
JSON SCHEMAupdate_user_requestBody
JSON SCHEMAupdate_va_status_resp
JSON SCHEMAUpdateWebhookRequestBody
JSON SCHEMAuser_requestBody
JSON SCHEMAValidateAgreementRequest
JSON SCHEMAvirtual_account
JSON SCHEMAvirtual_accounts_list
JSON SCHEMAWebhookRequestBody
JSON SCHEMAWebhook
JSON SCHEMAWebhooks
JSON SCHEMAScroll for all 31
Security Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Scopes 1
OAuth scopes governing access to this provider's APIs.
Agentic Access (API Evangelist recommendations) 1
Recommended x-agentic-access execution contracts for AI agents.
Resources
Get Started 3
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 4
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 9
Pagination, idempotency, versioning, errors, and events
Scroll for all 9
Build 5
SDKs, sample code, and the tooling you integrate with
Access & Security 3
Authentication, authorization, and security posture
Operate 5
Status, limits, changes, and where to get help
Commercial 4
Pricing, plans, and the legal terms of use
Company 4
The organization behind the API
Other 5
Properties that don't map to a standard resource type
Source (apis.yml)
Assembly Payments API — frequently asked questions
Does Assembly Payments have an API?
Yes. APIs.io lists 31 APIs from Assembly Payments, including Webhooks API, Assembly Payments Addresses API and Assembly Payments Authentication API, and 28 more.
Is there an OpenAPI specification for the Assembly Payments API?
Yes. APIs.io indexes 31 OpenAPI specifications for Assembly Payments, each linked for download from this page.
How do I authenticate with the Assembly Payments API?
Assembly Payments documents its authentication (http/oauth2 · 3 schemes). The details are profiled on APIs.io as Assembly Payments Authentication.
How much does the Assembly Payments API cost?
Assembly Payments publishes its prices; its Standard plan is 1.5% + A$0.30 as of 2026-10-22. APIs.io lists 2 pricing plans for Assembly Payments, with each plan's price, limits and inclusions under Pricing on this page.
Is the Assembly Payments API ready for AI agents?
Assembly Payments has a Kin Score of 63.2 out of 100 (strong) and an Agent Readiness score of 44.7 (agent-ready), scored by API Evangelist on 2026-11-06.
Work with this as data
Every provider here is available over the APIs.io API and to AI agents over MCP.