Integrations / Payments, invoicing and accounting

Use AssistCall with Zoho Books

AssistCall answers your business calls 24/7 and can send each call, message and booking to Zoho Books through Webhook, Zapier, Make, n8n.

Zoho Books: Zoho Books is Zoho's online accounting software for small businesses, with invoicing, expenses, bank feeds and a customer portal.

Connects

Example call

A caller asks for pricing on a monthly maintenance plan. AssistCall takes his details and a Zap adds him as a Zoho Books customer. The owner gets the summary by email and sends the estimate from Zoho Books.

• When AssistCall captures a new lead, a Zap uses Zoho Books' Create Customer action to add the caller.
• When a caller asks for a quote, a Zap uses Create Estimate to draft an estimate for that customer with your standard service item, ready for you to review and send.
• Forward your office line to AssistCall after hours, and get every call's summary, transcript and recording by email.

How it connects

• Webhook: Signed JSON for every call, message and booking, sent to any HTTPS URL you choose.
• Zapier: Send AssistCall events to a Zap (Webhooks by Zapier, Catch Hook), then use the app's Zapier actions. Needs a paid Zapier plan.
• Make: Start a Make scenario with a custom webhook and use the app's Make modules.
• n8n: Start an n8n workflow with a webhook node, then call the app with its node or an HTTP request.
• Call forwarding: Forward your business line to AssistCall when busy, after hours or always. Works with any carrier.

About Zoho Books's API

• Self-serve API: you can create a key in your account
• Style: REST (JSON)
• Authentication: OAuth 2.0 only. Access tokens expire after 1 hour. Refresh tokens last until they're revoked.
• On Zapier: yes. On Make: yes.

A Zoho Books user can register a Self Client in the Zoho API Console. API calls still need OAuth access tokens that expire after an hour, so AssistCall's live API lookup (which uses one fixed token) can't call Zoho Books directly. Outgoing webhooks are set up as workflow rule actions, which need the Professional plan or higher, with up to 1,000 webhook calls a day. Zapier's Zoho Books app has New Customer and New Sales Invoice triggers, plus Create Customer, Create Estimate and Create Sales Invoice actions. Make has a Zoho Books app, and n8n can use its HTTP Request node with an OAuth2 credential.

Not included: no one-click Zoho Books app, no listing in Zoho Books's marketplace, no two-way sync, and no partnership with Zoho Corporation.

Researched by the AssistCall team and checked against Zoho Corporation's public pages on October 24, 2026. Zoho Books is a trademark of Zoho Corporation. AssistCall is an independent product of Starling Global LLC and is not affiliated with, endorsed by, sponsored by or approved by Zoho Corporation.

More Payments, invoicing and accounting integrations

• PayPal: PayPal is an online payments service that small businesses use to accept payments and send invoices that customers can pay online.
• QuickBooks Online: QuickBooks Online is Intuit's cloud accounting software that small businesses use for invoicing, payments, expenses and bookkeeping.
• Square: Square is Block's payments and point-of-sale platform that small businesses use to take card payments, send invoices and keep a customer directory.
• Stripe: Stripe is an online payments platform that businesses use to take card payments, bill customers, run subscriptions and send invoices.
• Authorize.net: Authorize.net is Visa's payment gateway that small businesses use, through a merchant account, to accept card and eCheck payments online, in person and over the phone.
• BILL: BILL is accounts payable, accounts receivable and spend management software that small and midsize businesses use to pay bills, send invoices and get paid.

All product and company names in this directory are trademarks or registered trademarks of their respective owners, used only to identify systems AssistCall can send call information to or receive information from. Their use does not imply any affiliation with or endorsement by their owners. AssistCall connects using signed webhooks, the business's own API keys, automation platforms (Zapier, Make, n8n) the business sets up in its own account, and call forwarding. AssistCall does not provide one-click connectors, marketplace apps, certifications or two-way record or calendar sync, and does not sign HIPAA business associate agreements. Vendor features, plans and API access can change; information last checked October 24, 2026.