MYOB API Integration Skill

Provides read-only access to MYOB accounting data through the MYOB API. Extracts historical transactions, chart of accounts, contacts, and financial reports for tax analysis.

When to Use

• Connecting a MYOB client for tax analysis (instead of Xero)
• Extracting historical transaction data from MYOB
• Fetching chart of accounts for GL mapping
• Pulling profit & loss and balance sheet reports
• Multi-year data sync for carry-forward analysis

Integration Architecture

MYOB API → myob-adapter.ts → canonical-schema.ts → analysis engines

All MYOB data is normalised to the canonical schema (lib/integrations/canonical-schema.ts) before being consumed by analysis engines. This ensures all 16 engines work identically regardless of whether data comes from Xero, MYOB, or QuickBooks.

Key Files

• Adapter: lib/integrations/adapters/myob-adapter.ts — MYOB API client
• Historical Fetcher: lib/integrations/myob-historical-fetcher.ts — Multi-year data sync
• Canonical Schema: lib/integrations/canonical-schema.ts — Normalised data model
• Config: lib/integrations/myob-config.ts — OAuth configuration
• Auth Route: app/api/auth/myob/route.ts — OAuth 2.0 callback

Access Scopes

All access is read-only:

• General Ledger transactions
• Chart of accounts
• Contacts
• Bank transactions
• Payroll data (if available)

Data Normalisation

MYOB Field	Canonical Field	Notes
UID	externalId	MYOB unique identifier
DisplayID	reference	Account/transaction code
Date	date	ISO 8601
Total/Amount	amount	Decimal precision preserved
Account.DisplayID	accountCode	GL account code
Contact.DisplayID	contactId	Contact reference

OAuth Flow

1. User clicks "Connect MYOB"
2. Redirect to MYOB OAuth consent screen
3. User grants read-only access
4. Callback stores encrypted tokens
5. Select company file (MYOB-specific)
6. Begin historical data sync