AI and MYOB.

MYOB keeps the books for many NZ businesses that are not on Xero. This guide covers MYOB’s own AI, what the Claude and ChatGPT connector can and cannot do, and how to review supplier bills with AI before anything is posted.

Integration guide5 min readUpdated 19 October 2026

Short answer

An AI MYOB integration connects a model to your MYOB Business or AccountRight file through Iris by MYOB, the read-only MYOB Connector for Claude and ChatGPT, or the MYOB Business API. For New Zealand businesses the strongest first workflow is supplier invoice review: AI reads each bill and checks it against history and GST, and a person approves before anything is posted.

  • Ask Iris works on MYOB Lite, Pro and AccountRight; AI Business Insights is in beta.
  • The MYOB Connector for Claude and ChatGPT is read-only and needs the file owner’s permission.
  • The connector does not cover payroll, inventory, job tracking or any changes to data.
  • Cloud API calls need an OAuth token, company file credentials and a developer key.
  • MYOB returns 403, not 429, when an API key exceeds its rate limits.

What MYOB’s own AI does (October 2026)

MYOB’s AI is branded Iris. On MYOB’s NZ AI page, as listed on 19 October 2026, Ask Iris answers questions on Lite, Pro and AccountRight; AI Business Insights is in beta for eligible Pro and AccountRight browser customers; Smart Reconciliation is rolling out progressively; and Smart Invoice Reminders suggest payment follow-ups while you stay in control. MYOB says its NZ product is built for Inland Revenue requirements.

The MYOB Connector lets Claude and ChatGPT query MYOB Business through MCP. It is read-only, the Owner user must allow each AI tool per business in My Account, and it covers revenue, profit, expenses, receivables and cash, but not payroll, inventory, job tracking or tax lodgement. A decision rule: if the owner wants answers, turn on the connector. If you want bills entered or checked, build with the API and an approval step.

Integration routes and when to use each

Route What it gives you Use it when
Iris by MYOB Ask Iris, insights, reconciliation help and invoice reminders Everyday questions and follow-ups inside MYOB
MYOB Connector Read-only financial Q&A in Claude or ChatGPT Owners and managers asking questions in their assistant
MYOB Business API Contacts, general ledger, sales, purchases (bills, orders, supplier payments), inventory and payroll endpoints Custom workflows that read and write
Your own MCP server Narrow tools over the API for an agent No public developer MCP endpoint exists
n8n, Make or Zapier HTTP steps against the API Light glue, such as notifying approvers

Automation 1: supplier invoice review before posting

Inputs
Supplier invoice PDFs from the accounts payable inbox, plus the supplier card, the last year of bills from that supplier, open purchase orders and tax codes, read from MYOB.
Model step
Extract supplier, GST number, invoice number, date, lines, GST and total into a fixed schema with page references.
Checks in code
Lines and GST reconcile to the total; the invoice number is new for that supplier; unit prices are compared with history; the bank account on the invoice matches the supplier card.
Human approval
The accounts payable officer sees the extraction beside the PDF with flags, then approves, edits or rejects. A changed bank account always goes to a second person and a call to a known supplier number.
Write-back
The approved bill is created through the Purchase/Bill endpoints, with the PDF attached through the matching bill attachment endpoint.
Failure and recovery
Any error leaves the item in the review queue and creates nothing. A wrong posted bill is reversed in MYOB like any manual error, and the review record links the bill to its source PDF.
Extracted value MYOB bill field Rule
Supplier and GST number Supplier card Must match an existing card; never create one
Invoice number Supplier invoice number Unique per supplier
Lines Account, amount and tax code Account from supplier default or the approver
GST Tax amount Recalculated at 15%; flagged if it differs by more than a few cents
PDF Bill attachment Always attached

The accounting-practice version is mapped in invoice coding and exception review; extraction design is covered by our AI document processing service.

Automation 2: a month-end coding check

  1. Read. Pull the month’s general ledger transactions and bills with their accounts and tax codes.
  2. Compare. Code flags suppliers coded to an unusual account for them, and taxable suppliers coded GST-exempt.
  3. Explain. The model writes one line per flag explaining why it looks wrong, citing the transaction.
  4. Review. The bookkeeper or accountant fixes genuine errors in MYOB; the model changes nothing.

Permissions and approval design

Apps are registered in the my.MYOB portal for a key and secret, and users authorise through OAuth. MYOB’s docs list scopes by area (general ledger, sales, purchases, supplier contacts, payroll and more), so an accounts payable tool should not request payroll. Cloud requests carry three credentials: the OAuth token, company file credentials in x-myobapi-cftoken, and the developer key in x-myobapi-key. Give the integration its own company file user with a restricted role. Reviews follow the patterns in human review queues.

With the connector, MYOB handles sign-in so Claude or ChatGPT never sees the password, but conversations follow the assistant’s own privacy, training and memory settings. Supplier records for sole traders are personal information under the Privacy Act 2020.

Costs and limits (as listed 19 October 2026)

  • Developer programme: $110, $220 or $630 including GST, billed monthly; currency not stated.
  • Rate limits: not published on the developer pages we fetched. Exceeding them returns 403 with “API key has exceeded the per-second rate limit” or the daily equivalent.
  • Model cost, worked example: 300 bills a month at 5,000 input and 800 output tokens on Claude Sonnet 5.5 is about 300 × US$0.018 = US$5.40.

Where it goes wrong

  • 403 means two things. Retry logic keyed to 429 never fires; read the error text before treating a 403 as a permissions fault.
  • Wrong source in ChatGPT. MYOB warns that if the MYOB plugin is not selected, ChatGPT may answer from the web with a plausible figure.
  • Stale memory. Assistants may recall numbers from earlier chats that are no longer current.
  • Duplicate bills. Suppliers resend invoices; the uniqueness check stops double payment.

Businesses comparing ledgers should read our Xero guide, and hospitality operators our supplier invoice processing workflow.

Sources

  1. AI accounting with Iris by MYOB, MYOB, accessed 19 October 2026
  2. Connecting Claude or ChatGPT to MYOB, MYOB, accessed 19 October 2026
  3. MYOB Business API: getting started, MYOB Developer, accessed 19 October 2026
  4. MYOB Business API: headers, MYOB Developer, accessed 19 October 2026
  5. API error messages and warnings, MYOB Developer, accessed 20 October 2026
  6. Developer program details, MYOB Developer, accessed 19 October 2026
  7. About MYOB, MYOB, accessed 19 October 2026
  8. Pricing, Anthropic, accessed 19 October 2026
  9. Privacy Act 2020, New Zealand Legislation, version as at 1 October 2026

Written by the Levy Street team in Wellington. Last updated 19 October 2026.

Questions people ask

Can ChatGPT or Claude read our MYOB data?

Yes, through MYOB’s official MYOB Connector, which uses MCP. It is read-only and needs an active MYOB Business Pro, Lite or AccountRight subscription, plus the business owner allowing AI access in My Account. It answers questions on revenue, profit, expenses, receivables and cash. It does not cover payroll, inventory, job tracking, year-end tax or making changes.

Can AI enter bills into MYOB automatically?

Not through the connector, which cannot change data. A custom integration using the MYOB Business API can create bills, with attachments, after a person approves them. Keep that approval step: AI misreads invoice numbers, picks the wrong account and misses changed bank details, and every posted error has to be reversed by hand.

What does MYOB API access cost?

MYOB’s developer programme page lists three levels: Developer Access $110, Developer Partner $220 and Premium Developer Partner $630, including GST and billed on a monthly schedule. The page does not say whether these are NZD or AUD, so confirm with MYOB. Your other costs are development, hosting and model usage, which for a few hundred bills a month is a few US dollars.

Does MYOB have an MCP server developers can use?

MYOB’s own MCP-based connector is for Claude and ChatGPT users, not developers, and we found no public developer MCP endpoint as at 19 October 2026. Third-party MYOB MCP servers exist but are not MYOB’s, so review their security before connecting a company file. For custom agents, wrap the Business API in your own narrow MCP server.

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