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tuning-incremental-sync-config

Skill

Change the sync configuration of an existing data warehouse schema — switch sync_type, pick a different incremental_field, set primary_key_columns, choose cdc_table_mode, or change sync_frequency. Use when the user asks "switch my orders table from full refresh to incremental", "this table is syncin

0Databases

Install

git clone https://github.com/PostHog/ai-plugin.git ~/.claude/skills/tuning-incremental-sync-config

What is tuning-incremental-sync-config?

Change the sync configuration of an existing data warehouse schema — switch sync_type, pick a different incremental_field, set primary_key_columns, choose cdc_table_mode, or change sync_frequency. Use when the user asks "switch my orders table from full refresh to incremental", "this table is syncing too slowly / too frequently", "I need to pick a different incremental column", "set up CDC for this Postgres table", or when diagnosis of a failing sync pointed to an incremental-field or PK misconfiguration.

What this can do

Capabilities declared in this component's own frontmatter — not inferred.

Inherit all session tools

Declares no tool restrictions — inherits every session tool

~128 tokens of context used while enabled, before you invoke anything

Documentation

README · ~8 min read

Tuning incremental sync config

A sync's configuration lives on the ExternalDataSchema and can be changed any time via external-data-schemas-partial-update. Most changes are non-destructive (take effect on the next sync), but a few (switching sync_type, changing primary keys) require careful handling to avoid corrupting the synced data.

When to use this skill

  • The user wants to change how an already-connected table is synced
  • A diagnosis flagged the incremental field or primary key as wrong
  • The table is syncing too often / not often enough
  • Switching an incremental table to CDC (or vice versa)
  • The source table was changed on the other side (new columns, dropped columns) and the sync config needs to catch up

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