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Learn how to Build a Custom Connector with Weld

Bring data from any public API into Weld with a fully self-hosted connector!

This course walks you through building, testing, and deploying a custom connector step by step.

Custom Connector Tutorial
HomeCustom Connector Tutorial

Custom Connector Tutorial

Custom connectors let you sync data from tools that aren't available in Weld's standard connector library, giving you flexibility without sacrificing Weld's scheduling, lineage, and alerting features.

Follow along this comprehensive tutorial to build your own custom connector with Weld.

Module 1 • Introduction

What is a custom connector?

Bring data from any API into Weld — even if it’s not part of our native connector list.

Module 2 • Setup

Setting up your development environment

Get your tools ready to build your first custom connector.

Module 3 • Setup

Creating the /schema endpoint

Tell Weld what data your connector provides.

Module 4 • Setup

Creating the / (root) endpoint

Send your actual data to Weld - one page at a time.

Module 5 • Setup

Adding pagination to your custom connector

Break your data into pages so Weld can sync large datasets efficiently.

Module 6 • Setup

Adding authentication to your connector

Make sure only Weld can access your data.

Module 7 • Deploying

Deploying your connector to Google Cloud

Make your connector accessible to Weld - securely and reliably.

Module 8 • Syncing

Connecting your custom connector in Weld

Plug your self-hosted API into Weld and start syncing data.

Module 9 • Modeling

Modeling data from your custom connector

Turn raw API data into clean, usable tables for analysis.

Module 10 • Connecting to Weld

Connect to Weld

Make it production-ready with advanced features and best practices.

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