Weld Connect API
Preview
Fast and Seamless Integration
A developer-friendly API for connecting, automating, and managing data across all your business tools.
API Reference
You can find the complete API reference here. It covers all endpoints, request/response formats, authentication, and examples.
Why Choose Weld Connect?
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Rapid Integration: Clear API documentation and easy setup. Start building in minutes, not hours.
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Scalable Automation: Automate data flows across CRMs, finance tools, ad platforms, and more.
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Reliable Support: Responsive support from a team that knows the product inside out.
Available Endpoints
The API covers three core areas:
Connections & ELT Syncs
Create data sources, configure syncs, select streams, and control scheduling.
Transforms API New
Create, update, publish, and version data models directly through the API.
| Endpoint | What it does |
|---|---|
GET /transforms | List models with filters |
POST /transforms | Create a model with SQL and optional auto-publish |
PATCH /transforms/{id} | Update SQL, name, folder, or materialization |
POST /transforms/{id}/publish | Materialize to your warehouse |
GET /transforms/{id}/versions | Browse revision history |
POST /transforms/bulk | Create up to 50 models at once |
Read the Transforms API blog post →
Full API Reference
All endpoints, request/response formats, and authentication details are available in the API reference →.
Use Cases
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Integration orchestration: Automate connections between business systems, syncing data across platforms without manual data entry.
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CI/CD model deployments: Push SQL models from Git to Weld as part of your release pipeline using the Transforms API.
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AI agent workflows: Let coding assistants (Claude Code, Cursor, Copilot) or custom agents create connections, trigger syncs, and publish models via the API.
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Workflow automation: Trigger and control data processes through APIs, enabling dynamic scheduling and multi-step orchestrations.
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Access and permissions control: Manage user roles, permissions, and API keys programmatically.
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Data monitoring: Capture real-time metrics on data syncs, system health, and performance.
Limitations
Currently, it is not possible to create ELT syncs using Weld Connect for the following integrations:
- Business Central
- Microsoft OneDrive
- SFTP
We also don't support the creation of any custom reports such as the ones we have under Facebook Ads, Google Ads and Google analytics.
The Weld Connect API is only available to customers on the Business plan. You can read more about our plans and pricing here.