FreshBooks LLM Tools— Integrate your Agent with FreshBooks in Minutes

Knit’s FreshBooks LLM tools give your AI agents instant, code-free access to every FreshBooks API endpoint—read, write, and automate without OAuth headaches or custom endpoints.

See

FreshBooks

LLM Tools In Action

Watch an agent automate workflows—all with Knit’s plug-and-play toolkit.

Why Builders Pick Knit for Production-Grade LLM Tools

Full-coverage APIs, friction-free auth, and a framework-agnostic SDK—everything you need to ship smarter FreshBooks automations fast.

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100% FreshBooks API Coverage

With Knit's toolkit, every API endpoint comes pre-wrapped, enabling your agents to perform any task a human user can.

150+ Cross-App Integrations

Need more than FreshBooks? The same SDK unlocks calendars, ticketing tools, and 150+ other SaaS apps for end-to-end workflows.

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Framework-Agnostic by Design

Works out-of-the-box with LangChain, LangGraph, and OpenAI—plus Claude and CrewAI support coming soon.

Higher-Precision Prompts

Knit ships with human-readable, LLM-tuned tool descriptions so your agent always picks the right action, reducing hallucinations and retries.

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Zero-Hassle Auth

OAuth handshakes, token refreshes, and secure credential storage are handled behind the scenes. You focus on features, not refresh tokens.

LLM-Native Toolkits

Each action is exposed as a ready-to-call function for OpenAI Functions, LangChain Tools, and more. Your model “thinks” the action, Knit executes it.

Actions available via

FreshBooks

LLM Tools

  • Unified Action

Update Payment Details

The Update Payment Details API allows updating payment information linked to invoices or bills. It requires parameters such as paymentId, accountId, contactId, amount, invoiceId, and paymentLinkedTo. Optional fields include date, description, currency, exchangeRate, linkedInvoices, and metaData. The response indicates success or failure with an optional error message.

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  • Unified Action

Create Accounting Invoice

The Create Accounting Invoice API allows users to create an invoice or bill in the accounting system. The request requires a JSON body with the type of document (INVOICE or BILL), a contact ID, and at least one line item. Additional optional fields include status, invoice number, issue date, due date, paid on date, currency, exchange rate, description, total amount, total tax, total discount, and metadata. The response returns a success status and the created invoice ID if successful, or an error message if the request fails.

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Accounting LLM Tools

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What our users say

Hear from some amazing companies who solve their integration challenges with Knit!

“Amazing Product With Exceptional Support from the team.”

By using Knit we manage to speed up our development speed by orders of magnitude. The team have been very responsive and answer all our inquiries very fast.

Huynh H.

Multiplier

“A brilliant tool to let you seamlessly integrate with many different systems”

Very intuitive and easy to use, I have experienced no downtime despite using it to load a lot of data. It is very easy to integrate with and customer support is next level.

Jayesh

Scrut.io

“Seamless Integration Experience"

The APIs are well documented and self explanatory. The proactive communication by the team has been helpful in resolving any issues quickly.

Precisely, we are highly satisfied with the level of service and support provided.

Poorvi

Onsurity

“Easy to Integrate”

Knit's dashboard is very intuitive to setup and test any integration. Their sandbox is super useful when it comes to test any integration during development.

Aditya

RazorpayX

“Adding Integrations has never been easier”

KNIT was truly been a game-changer for our team and enhanced the way we work. Thanks to its effortless integrations, we could create our custom setup for so many use cases, including message updates on Slack, CRM insights from HubSpot, accounting notes from Xero, and many more!

Shreelekha S.

Floik

#1 in Ease of Integrations

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4.9 out of 5 stars on G2

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4.9 out of 5 stars on G2

Put Integrations on Autopilot. Talk to Experts.

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Book a 1-on-1 demo today

FreshBooks

LLM Tools FAQ’s