Analyze Lineage

Skill for understanding the upstream dependencies and downstream impact of semantic layer fields.

Purpose

Enables safe modification and deletion of fields by revealing their data lineage.

Tools

Wraps the following MCP tools from the lightdash server:

• •lightdash_tools__get_field_lineage
• •lightdash_tools__list_charts_as_code (Impact analysis)

Behavior

1. •Dependency Mapping: Use get_field_lineage to see what warehouse columns a field depends on.
2. •Impact Analysis: Use list_charts_as_code to see which charts reference a field before renaming or deleting it.

Rules

• •ALWAYS check impact before destructive YAML changes.