Weld

Weld provides fully autonomous ETL pipelines that deliver fresh, reliable data to AI agents, analytics, and operational tools. It solves the problem of scattered data across dozens of SaaS tools by replicating data from 300+ sources to warehouses like BigQuery, Snowflake, and Redshift. The platform targets data teams, developers, and operations in mid-market and enterprise companies. It is positioned as a simple, fast, reliable, and secure alternative to other ETL tools, with a focus on automation and AI integration.

Key features

• 300+ prebuilt connectors
• Custom connectors with Python
• Change Data Capture (CDC) replication
• Reverse ETL to operational tools
• AI agent workflows via API
• MCP server for AI agents
• Schema-aware and type-safe
• Auto schema handling
• Self-healing pipelines
• End-to-end observability and alerts