Weld Documentation

Programmable data infrastructure. Connect 300+ sources, build pipelines with code, and give AI agents full API control.

API Reference Quickstart

Connectors

300+ data sources

Databases & CDC Files Custom Connectors

Destinations

Data warehouses & lakes

REST API

Programmable data infrastructure

Manage your entire data stack via code. Create connections, trigger syncs, embed pipelines, and power AI agent workflows.

Create a connection

POST /api/v1/connections

{
  "connector_id": "shopify",
  "destination_id": "wh_abc123",
  "schedule": "every_15_min"
}

API Overview

Authentication, rate limits, and getting started.

Connection Management

Create, configure, and manage connector instances.

ELT Sync Control

Trigger syncs, monitor status, and handle scheduling.

Pagination

Navigate large result sets efficiently.

Automate

Orchestration & automation

Orchestration

Schedule syncs, dbt triggers, webhooks, Dagster & Airflow integration.

Read docs

Custom Connectors

Build your own connectors in Python for any REST API.

Read docs

Reverse ETL

Push warehouse data back to CRMs, ad platforms, and operational tools.

Read docs

Transform

Model & transform data

SQL Models

Reusable models with AI assistance, scheduling, lineage and version history.

Read docs

dbt Cloud & dbt Core

Orchestrate dbt jobs or use push-to-deploy with GitHub.

Read docs

Model Import & Export

Import/export as ZIP with automatic dbt project conversion.

Read docs

Resources

Release Notes

Need help?

Our support team is here to help.

Contact support