AI Zeny is an independent product and is not affiliated with, endorsed by, sponsored by or otherwise connected to the makers of BUSY Accounting Software. “BUSY” and related marks are trademarks of their respective owners and are used here only to describe compatibility.
BUSY API
Read your BUSY Accounting data through an API
BUSY keeps your books; AI Zeny gives your own software a documented way to read them — company by company and year by year — without copying files or re-typing reports.
Start Free TrialFree trial · no card or payment details · Pro-level features, without the AI Agent
Why businesses want an API for BUSY
- A website, dealer portal or mobile app needs current prices, stock or a customer’s outstanding.
- A reporting tool needs registers and ledgers in a machine-readable form.
- A developer needs a stable contract instead of reading database tables directly.
How a system reads BUSY through AI Zeny
- 1
Step 1: Create a token
In the AI Zeny portal, create an API token for the system and limit it to the companies it needs. - 2
Step 2: Call an operation
The system names the operation, the BUSY company code and the financial year. - 3
Step 3: Receive one envelope
Every answer is JSON with success, data and metadata, including a request id.
BUSY data it reads
Products · Price-category prices · Customers · Customer ledger (one or more years) · Sales register · Sale invoices · Receivables ageing analysis · Inventory daybooks · Execute one read-only SELECT
What you need to set up
- The AI Zeny Windows app connected to your BUSY company on the PC.
- An API token per calling system, created and scoped in the portal.
- A developer or tool that can make HTTPS requests with a bearer token.
Plus reads your BUSY data, with scripting and Google Sheets; Pro adds accounting writes; Max adds the AI Agent, which is not available yet. Go, below Plus, includes none of these. Every plan, the free trial included, has the end-to-end encrypted BUSY backup. Local mode and Cloud mode are not tied to a plan. The free trial gives Pro-level features, without the AI Agent.
What you control
- Tokens are shown once, can be limited to selected companies, can expire, and can be rotated with an overlap window.
- None of the 66 BUSY operations changes your books; a named script may also call other systems from your PC, so it is not repeated automatically.
Where the data goes
- A live request is answered by the Windows app on your PC in the same request.
- In Cloud mode the API answers from the synchronized snapshot.
Local mode: Requests are answered by the AI Zeny Windows app on your PC. In ordinary operation AI Zeny does not persistently store the accounting data in those answers.
Cloud mode: encrypted snapshots synchronized approximately every 10–15 minutes, readable around the clock. Cloud-mode answers reflect the last completed synchronization, not live data.
Exception, in either mode: with your explicit consent, a small sample can be sent to OpenAI to correct a wrong AI-built query. AI Zeny deletes its own temporary copy after the correction; what OpenAI keeps is governed by OpenAI’s terms.
Limits
- Answers up to 2 MiB; larger answers are refused, never cut short.
- A standard read request waits up to 140 seconds; 4 requests can be in flight per organization. Write and streaming operations have their own limits in the operation reference.
- Up to 5 financial years per request on operations that accept several years.
These are technical limits of each request and apply the same way on every plan and during the free trial. The free trial also has its own length and company, financial-year and device limits, shown on the free-trial page and when you register.
Free trial · no card or payment details · Pro-level features, without the AI Agent
AI Zeny is an independent product and is not affiliated with, endorsed by, sponsored by or otherwise connected to the makers of BUSY Accounting Software. “BUSY” and related marks are trademarks of their respective owners and are used here only to describe compatibility.