Karrio

• Website: https://karrio.io
• Documentation: https://karrio.io/docs
• Forums: Github Discussions
• Discord: Karrio Discord server
• Issues: Issue Tracker
• Blog: Blog

The open-source shipping platform for modern logistics

Karrio allows you to integrate with your shipping carriers to query, visualize and manage shipping API transactions. Integrate, connect and process shipping transactions with a modern tech stack:

• Headless Shipping: Access a network of shipping carriers API-first.
• Multi-carrier API: Build shipping functionalities with webhooks, APIs and metadata.
• Multi-carrier SDK: Use the karrio SDK to integrate with custom carrier APIs.
• Fulfil Orders: Connect carrier accounts, get live rates and purchase shipping labels.
• Tracking: Create package trackers and get real-time tracking status.
• Dashboard: Use the karrio dashboard to test and visualize shipping transactions.
• Cloud: Optimized for deployments using Docker.

Karrio is not designed as an out-of-the-box shipping software to be used for purposes that differ to the feature scope above.

In regard to development philosophy, Karrio has a relaxed, open & positive approach. At the end of the day this is free tool developed and maintained by people donating their own free time.

Get up and running in 1 minute with:

git clone --depth 1 https://github.com/karrioapi/karrio
cd karrio
git submodule update --init community
cd docker
docker compose up

• Karrio server accessible at http://localhost:5002
• Karrio dashboard accessible at http://localhost:3002

Default Login: admin@example.com | demo

Get started

Quick start demo

A short video (less than 4 minutes) that goes over creating your first label and tracking your first package.

Open-source hobby deploy (Advanced)

You can deploy a hobby instance in one line on Linux with Docker (recommended 4GB memory):

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/karrioapi/karrio/HEAD/bin/deploy-hobby)"

The problem: Shipping integration is still painful

• Lack of documentation.
• Multiple and inconsistent APIs.
• Difficult access to account and API credentials for development.
• Poor developer experience.

Philosophy

Karrio makes it easy to integrate with shipping carriers and improve your fulfilment processes without losing control.

We believe that the logistics industry can greatly benefit from a unified, open and standardized shipping API that gives you direct access to a network of carriers, control over customers' personal data and compliance.

Benefits

Karrio is the only platform-focused open-source developer tool that offers label generation, package tracking, carrier connections management and, document generation APIs that you can host on your own infrastructure.

We are an open-source alternative to expensive in-house carrier integration and multi-carrier Saas APIs. We're designed to be more developer-friendly, with the fullset of shipping functionalities without vendor-lockin.

Shipping for platforms

With Karrio, you can extend your platform with native shipping capabilities. Improve merchants and customers' experience on your Marketplace, eCommerce, ERP, WMS, OMS, 3PL and Logistics platform.

With Karrio, 3PLs and large-volume shippers regain control over their shipping tech stack and processes.

Shipping for retailers

Karrio makes modern shipping accessible to brands, retailers as well as businesses in regulated industries.

When onboarding new carriers, your IT team can meet their requirements in a week or less.

License

This repository contains both open-source and commercial components, distributed under a dual-license model.

Open Source (LGPL-3.0)

The following components are licensed under LGPL-3.0:

Component	Description
Karrio Server	Core shipping API server and SDK
Community Plugins	Carrier integrations in /community
Modules	Core modules (/modules/*)

You are free to:

• Use Karrio for any purpose (commercial or non-commercial)
• Self-host and modify the open-source components
• Build and distribute carrier plugins and integrations
• Contribute improvements back to the community

Enterprise Edition (Karrio EE)

The /ee directory contains enterprise-only features under the Karrio Enterprise License:

Feature	Description
Multi-tenancy	Platform-level tenant isolation
Advanced workflows	Shipping automation and rules engine
Audit logging	Compliance and security tracking
SSO/SAML	Enterprise authentication
Priority support	SLA-backed support and services

Enterprise features require a valid Karrio subscription.

Plugin Development

Carrier plugins and integrations can be developed under permissive licenses (Apache-2.0 or LGPL-3.0). This allows you to:

• Build proprietary carrier connectors
• Monetize your plugins independently
• Contribute plugins to the community repository

See our Plugin Development Guide for details.

MCP Server

Karrio ships with a built-in Model Context Protocol (MCP) server, letting AI assistants like Claude, Cursor, and Windsurf query rates, purchase labels, track shipments, and manage carriers directly from your IDE or chat interface.

Quick install

Claude Desktop / Cursor / Windsurf — add to your MCP config:

{
  "mcpServers": {
    "karrio": {
      "command": "npx",
      "args": ["karrio-mcp"],
      "env": {
        "KARRIO_API_KEY": "your_api_key",
        "KARRIO_API_URL": "https://api.karrio.io"
      }
    }
  }
}

Self-hosted instance:

{
  "mcpServers": {
    "karrio": {
      "command": "npx",
      "args": ["karrio-mcp"],
      "env": {
        "KARRIO_API_KEY": "your_api_key",
        "KARRIO_API_URL": "http://localhost:5002"
      }
    }
  }
}

What you can do

Once connected, ask your AI assistant things like:

• "Get me shipping rates from DHL and FedEx for a 2kg package to Germany"
• "Purchase a UPS label for order #1234"
• "Track shipment 1Z999AA10123456784"
• "List my connected carrier accounts"

→ Full MCP server docs and tool reference

Contributing

We <3 contributions big and small. In priority order (although everything is appreciated) with the most helpful first:

• Ask general question on Github Discussions
• Submit a feature request
• Review the Repository Guidelines for project-specific conventions
• Open a PR (see our instructions on developing Karrio locally)

Contributors