Integrate the FreshBooks API.Caddi writes and runs the integration for you.
FreshBooks has a REST API. Any developer can create a FreshBooks account (a free developer signup exists) and register apps in the developer dashboard, and public App Store apps must meet extra requirements.
- 99%of agent runs complete successfully
- ~45 minon average to build your first agent
- 1M+back-office tasks completed
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. No daily request cap, but bursts of calls in a short period are rate-limited with HTTP 429 (no numbers published).
Register an app, store FreshBooks credentials, refresh tokens and code around the rate limits.
Connect your FreshBooks account once. Caddi holds the connection.
The job doesn't stop at FreshBooks.
An intake, a filing or a client update also runs through email, documents and the other systems your team works in. The FreshBooks API only reaches FreshBooks.
Each extra system is another API, another set of credentials, another integration to own.
One automation runs across every tool the job touches, each through its API.
Someone has to own the code.
API versions change, fields get added and your process moves.
A developer patches and redeploys the integration each time.
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 FreshBooks API gives you
- Type
- REST (JSON)
- Authentication
- OAuth 2.0 (authorization code grant)
- Who can get access
- Any developer can create a FreshBooks account (a free developer signup exists) and register apps in the developer dashboard, and public App Store apps must meet extra requirements.
- What it covers
- Clients, invoices, payments, estimates, expenses, bills, time entries, projects, journal entries, reports and webhooks.
- Limits
- No daily request cap, but bursts of calls in a short period are rate-limited with HTTP 429 (no numbers published).
Official docs: freshbooks.com. Checked September 2026. Vendors change access terms, so confirm with FreshBooks before you build.
When to build the FreshBooks 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 FreshBooks work off someone's desk, the build is the slow part, and Caddi does it for you.
What teams usually want the FreshBooks API for
Time-and-project invoice prep
Caddi assembles the month's invoice from time entries and project data, populates FreshBooks, and routes it for partner review.
Receipt reconciliation
Caddi matches inbound payment receipts to FreshBooks invoices and updates the project record.
Collections loop
Caddi identifies aging FreshBooks invoices, drafts personalized reminders from the partner's account, and logs each touch.
Everything Caddi does with FreshBooks.
FreshBooks API questions
Does FreshBooks have an API?
Yes. FreshBooks has a REST API, authenticated with OAuth 2.0 (authorization code grant). The official documentation is at https://www.freshbooks.com/api/start.
How do I get access to the FreshBooks API?
Any developer can create a FreshBooks account (a free developer signup exists) and register apps in the developer dashboard, and public App Store apps must meet extra requirements.
Does the FreshBooks API have rate limits?
No daily request cap, but bursts of calls in a short period are rate-limited with HTTP 429 (no numbers published).
Can I connect FreshBooks to my other tools without writing code against its API?
Yes. With Caddi you show the FreshBooks task once, the way you'd train a new hire, and Caddi builds it as verified code that runs across FreshBooks 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 FreshBooks with Caddi?
No. There is no integration code for you to write or maintain. Every automation Caddi builds for FreshBooks is reviewed before it runs in production, and every run is logged.