Finance & ERP · Integration
Zoho Books
Add Zoho Books to your product for your customers, and give your AI agents governed access to it.
Zoho Books is the accounting piece of a much larger suite, and the practical consequence is that a customer's contacts and items are often shared with the rest of their Zoho estate, so a write here is visible elsewhere. The organisation identifier is required on essentially every call and a customer can have several, which is the first thing an integration gets wrong. Data centres are regional, so an account created in the EU is not reachable on the US host, and picking the wrong one produces an authentication error that looks like a bad credential rather than a wrong region. fastn resolves the region and the organisation per customer so those two failure modes never reach your product.
In your product
Embedded for your customers. Per-tenant auth, no per-customer code, maintained by fastn.
Let a customer connect their own Zoho Books organisation so invoicing appears inside your product.
Create invoices and bills against the customer's own contacts, items and tax settings.
Read payments and credit notes to show a true position rather than a billed one.
React when an invoice or payment changes, rather than polling on a schedule.
For your AI agents
Governed, audited access for the agents you build, through the MCP server.
An agent reports outstanding invoices for a contact and what has been paid against them.
An agent records a payment within governed permissions, with the write audited per tenant.
An agent reconciles a bill against a purchase order and flags the difference.
Example prompt
What is outstanding for this contact, and which invoices have partial payments against them?
Set up Zoho Books in 4 steps
- 01Enable the Zoho Books connector from your fastn dashboard.
- 02Have each customer authorise their own Zoho Books account, so calls run under their credentials rather than a shared key.
- 03Decide which invoices, payments and vendors your product needs, map those fields, then enable the actions and triggers you want.
- 04Call it from your product and expose it to your agents through the same governed connection.
Why teams use the Zoho Books integration
What you get by embedding it with fastn instead of building it yourself.
- Ship a Zoho Books integration without building it. Your customers connect their own Zoho Books account inside your product and work their invoices, payments and vendors there, with no per-customer code on your side.
- Handle the part that actually costs time: financial writes must be idempotent and reconcilable, because a duplicate is an accounting problem rather than a bug. fastn owns the auth, token refresh, rate limits, pagination and breaking-change fixes, so a Zoho Books update is not your on-call problem.
- One integration serves your product and your agents. The same governed Zoho Books connection powers in-product features and gives AI agents scoped, audited access, so you move financial records without hand-keying them between systems without wiring it twice.
Used by these teams
Compare with
Xero
QuickBooksWorks well with
Zoho CRMOften used alongside
Tools the same teams tend to run next to Zoho Books, across other categories.
Shopify
Stripe
BigCommerce
AfterShipZoho Books integration FAQ
How do I add a Zoho Books integration to my product?
Enable the Zoho Books connector in your fastn dashboard, then let each customer authenticate their own Zoho Books account. fastn handles the OAuth flow, token storage and refresh per tenant, so there is no Zoho Books client code in your app and no per-customer branch in your codebase. Setup is 4 steps.
Do my customers each connect their own Zoho Books account?
Yes. Every connection is scoped to the individual customer, so each authorises their own Zoho Books account and only ever sees their own invoices, payments and vendors. That per-tenant isolation is the point of an embedded integration: you support the long tail of customer setups without maintaining an integration per customer.
Can AI agents use this Zoho Books integration?
Yes. The same connection is exposed to your agents through the fastn MCP gateway, with permissions scoped per tenant and every call audited. An agent reports outstanding invoices for a contact and what has been paid against them.
Who maintains the Zoho Books integration?
fastn does. When Zoho Books changes an endpoint, deprecates a field or alters its auth, the fix lands in the connector rather than in your backlog, and your customers' connections keep working.
Is the Zoho Books integration safe for financial writes?
Writes are idempotent, so a retry after a timeout does not post a document twice, and every call is logged per tenant so an entry can be traced back to the event that created it. That matters more in finance than anywhere else, because a duplicate is a number somebody has to explain.
Can it handle each customer's own chart of accounts?
Yes. ERP deployments are configured to the business, so account structures, required fields and fiscal calendars differ per customer. Those are mapped per tenant as configuration, not hard-coded.
What about Zoho Books rate limits during a first import?
Backfills are throttled deliberately. ERP limits are often account-wide rather than per-integration, so an unthrottled import can exhaust a customer's allowance and disrupt their other integrations.
What can I build with the Zoho Books integration?
A common starting point: let a customer connect their own Zoho Books organisation so invoicing appears inside your product. Teams also use it for the other use cases listed above, and expose it to agents for governed reads and writes.
How much does the Zoho Books integration cost?
It is included. Pricing is based on connected accounts, not on how many connectors you enable, so adding Zoho Books does not change your per-connector cost. You can start free with 3 connected accounts.
Add Zoho Books to your product
Start free with 3 connected accounts. No sales call required, and no per-customer integration code.