Build your AI agent with Extend

Use our open source AI toolkit to integrate the Extend API into your agentic workflows.

With an AI agent, all you have to do is ask.

A little prompt goes a long way.

Ask your agent for things like reports, status updates, or tell it to match your receipts or update expense categories.

Make it work for you, automatically.

Tell your agent to monitor and alert you of specific activity, give it special categorization rules, or ask it to send your regular reports.

The blocks you can build with

Customization is key when it comes to building an agent that actually makes your job easier. Our AI Toolkit gives you the flexibility to create your own solutions with our API capabilities.

Fetch credit card, virtual card, and transaction data

Leverage filters for reporting or rule setting

Code transactions and manage expense categories

Upload and attach receipts, send reminders, and set status alerts

Multi-framework support

Open AI

Langchain

MCP

Crew AI

Getting started resources

Blog

Getting Started with the Extend API: A Complete Guide

Blog

How to build an AI Agent with Langchain

Blog

Empowering teams & staying on budget with Levin + Riegner

Build your AI agent with Extend

With an AI agent, all you have to do is ask.

A little prompt goes a long way.

Make it work for you, automatically.

The blocks you can build with

Fetch credit card, virtual card, and transaction data

Leverage filters for reporting or rule setting

Code transactions and manage expense categories

Upload and attach receipts, send reminders, and set status alerts

Multi-framework support

Open AI

Langchain

MCP

Crew AI

Getting started resources

Getting Started with the Extend API: A Complete Guide

How to build an AI Agent with Langchain

Manufacturing: Centralized purchasing with virtual card APIs