MYOB MCP Server: Connect MYOB to Claude

MYOB is the second-dominant accounting platform for Australian SMBs after Xero, with particularly strong penetration in established businesses, accounting firms with legacy client bases, and industries that adopted MYOB in the AccountRight desktop era. For the ~500,000 Australian businesses still on MYOB, the “can I connect this to AI?” question matters — and it’s currently underserved.

What is MYOB?

MYOB (Mind Your Own Business) is an Australian accounting and business management platform. It covers invoicing, payroll, bank reconciliation, GST, BAS, and financial reporting. MYOB’s product family includes AccountRight (cloud-enabled desktop), MYOB Business (formerly Essentials — pure cloud), Exo (legacy on-premise), and Advanced (enterprise ERP). The API and MCP integration covered here target AccountRight Live and MYOB Business via the unified MYOB Business Platform API.

What is MCP and why does it matter for MYOB users?

The Model Context Protocol (MCP) is an open standard by Anthropic that lets AI models connect to external tools and data sources. Unlike Zapier, which runs fixed automations between two apps, MCP is agent-native — Claude decides when to query MYOB, what data to pull, and how to combine it with other sources inside a single conversation.

For MYOB users, this unlocks questions that would otherwise require exports, spreadsheets, and manual work:

• “Summarise this quarter’s GST transactions by tax code and flag anything that looks unusual”
• “Which clients have invoices outstanding over 60 days, and what’s the total exposure?”
• “Show me expense variance month-over-month for the last 6 months and tell me what’s changed”

And the answers come from live MYOB data — not last Thursday’s export.

Current state of MYOB + Claude integration

As of April 2026, there is no official MYOB MCP server. MYOB is not in Anthropic’s Connectors Directory (unlike Xero, which also lacks one). Unlike Xero, MYOB also has no widely-adopted community MCP server — this is largely uncharted territory.

Lightning Ventures maintains a tested MYOB MCP implementation built against the MYOB Business Platform API, with:

• OAuth 2.0 authentication including the company file credential layer
• Automatic token refresh (MYOB tokens expire every 20 minutes)
• Response caching to respect MYOB’s 1,000-request daily rate limit
• Coverage for Sales, Purchases, General Ledger, Contacts, Items, Tax Codes, and Reports endpoints
• Australian tax-specific helpers for GST, BAS, and PAYG queries

How it works

The MYOB + Claude integration runs on your infrastructure via a locally-deployed MCP server. Lightning Ventures handles the entire setup: OAuth 2.0 configuration, the MYOB-specific company file credential layer that trips up most developers, token refresh handling (MYOB tokens expire every 20 minutes), response caching to respect the 1,000-requests-per-day limit, monitoring, and an Australian Privacy Act compliance review.

Typical deployment is 3–5 business days for a standard read-only configuration covering Sales, Purchases, General Ledger, Contacts, Items, Tax Codes, and Reports. Multi-entity, payroll, or write-back workflows are 3–4 weeks under the Custom Build tier.

Security and compliance considerations

Company file credentials: These are the most sensitive values in a MYOB integration — they grant full file-level access. Store them in environment variables or a secrets manager, never in source control. For team deployments, use per-user credentials where possible.

Data flow: MYOB data → your locally-run MCP server → Claude’s context window. The MCP server does not store MYOB data between sessions. Your data does not transit through Lightning Ventures systems.

Australian Privacy Act (APP 8): The locally-hosted architecture keeps MYOB data within your own infrastructure. Anthropic’s Claude API does process query content on overseas servers — if your MYOB data includes personal information about Australian residents (customer names, contact details), review Anthropic’s data processing agreement against your Privacy Policy obligations. Data minimisation is your friend: query only the fields needed for each question.

Rate limiting: MYOB’s 1,000-requests-per-day cap is strict. The Lightning Ventures config caches stable reference data (contacts, items, tax codes) for 6 hours by default. For high-volume use cases, this caching window is adjustable.