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Zendesk APIIntegration guide

Integrate the Zendesk API.Caddi writes and runs the integration for you.

Zendesk has a REST API. Self-serve for Zendesk customers on any plan, with rate limits set by plan; apps distributed to other Zendesk accounts need global OAuth.

  • 99%of agent runs complete successfully
  • ~45 minon average to build your first agent
  • 1M+back-office tasks completed
01Getting access

The connection is a project before it does anything.

Before the first record moves: an app registration, credentials, token refresh, and somewhere to host and monitor the code. Support API allows 200 req/min on Team, 400 on Professional, 700 on Enterprise, and 2,500 with the High Volume API add-on.

On your own

Register an app, store Zendesk credentials, refresh tokens and code around the rate limits.

With Caddi

Connect your Zendesk account once. Caddi holds the connection.

02The whole job

The job doesn't stop at Zendesk.

An intake, a filing or a client update also runs through email, documents and the other systems your team works in. The Zendesk API only reaches Zendesk.

On your own

Each extra system is another API, another set of credentials, another integration to own.

With Caddi

One automation runs across every tool the job touches, each through its API.

03After launch

Someone has to own the code.

API versions change, fields get added and your process moves.

On your own

A developer patches and redeploys the integration each time.

With Caddi

The person who does the work updates it by showing or describing the change. Every automation is reviewed before it runs in production, and every run is logged.

What the Zendesk API gives you

Type
REST (JSON)
Authentication
OAuth 2.0 access tokens (recommended); API tokens with basic auth are deprecated
Who can get access
Self-serve for Zendesk customers on any plan, with rate limits set by plan; apps distributed to other Zendesk accounts need global OAuth.
What it covers
Tickets, users, organizations, groups, Help Center articles, and other Support objects.
Limits
Support API allows 200 req/min on Team, 400 on Professional, 700 on Enterprise, and 2,500 with the High Volume API add-on.

Official docs: developer.zendesk.com. Checked September 2026. Vendors change access terms, so confirm with Zendesk before you build.

When to build the Zendesk integration in-house

When you have engineers and the integration is your product, or you need one narrow sync between two systems and someone to own it. When the goal is getting Zendesk work off someone's desk, the build is the slow part, and Caddi does it for you.

What teams usually want the Zendesk API for

  • Email-to-ticket triage

    Caddi reads inbound email, classifies and routes the right Zendesk ticket, and confirms back to the customer.

  • CRM-to-ticket link

    Caddi opens the matching Zendesk ticket from a CRM event and writes resolution back to the deal or contact when the ticket closes.

  • Escalation routing

    Caddi watches for high-priority tickets, escalates to the right team in Slack or Teams, and tracks resolution.

Everything Caddi does with Zendesk.

Zendesk API questions

Does Zendesk have an API?

Yes. Zendesk has a REST API, authenticated with OAuth 2.0 access tokens (recommended); API tokens with basic auth are deprecated. The official documentation is at https://developer.zendesk.com/api-reference/.

How do I get access to the Zendesk API?

Self-serve for Zendesk customers on any plan, with rate limits set by plan; apps distributed to other Zendesk accounts need global OAuth.

Does the Zendesk API have rate limits?

Support API allows 200 req/min on Team, 400 on Professional, 700 on Enterprise, and 2,500 with the High Volume API add-on.

Can I connect Zendesk to my other tools without writing code against its API?

Yes. With Caddi you show the Zendesk task once, the way you'd train a new hire, and Caddi builds it as verified code that runs across Zendesk and the other tools the job touches. Steps that need a person's judgment are handed to Copilot or Claude, and Caddi monitors those too.

Do I need a developer to automate Zendesk with Caddi?

No. There is no integration code for you to write or maintain. Every automation Caddi builds for Zendesk is reviewed before it runs in production, and every run is logged.