Tableau → Sigma

Sigma migration skills

A plugin marketplace of skills for migrating BI tools to Sigma. Each plugin is a pair of skills — a converter (rebuild the content in Sigma) and an assessment (inventory + complexity

• a value/cost shortlist) — validated end-to-end with parity checked against the source warehouse, not just a best-effort port.

Works with any coding agent. Install it as a Claude Code plugin, or use it from Cursor, Cortex Code, and others via AGENTS.md — the skills themselves are agent-neutral (a SKILL.md + scripts/), and credentials load from a shared ~/.sigma-migration/env under any agent.

Install

Claude Code — add the marketplace and install the plugins you need:

/plugin marketplace add twells89/sigma-migration-skills
/plugin install tableau-to-sigma@sigma-migration-skills
/plugin install powerbi-to-sigma@sigma-migration-skills
/plugin install qlik-to-sigma@sigma-migration-skills
/plugin install thoughtspot-to-sigma@sigma-migration-skills

Other agents (Cursor, Cortex Code, …) — clone the repo and point your agent at the skill folders; AGENTS.md maps each task to its skill. For example, Cortex Code:

git clone https://github.com/twells89/sigma-migration-skills
cortex skill add sigma-migration-skills/plugins/tableau-to-sigma/skills/tableau-to-sigma

Then just describe what you want migrated — e.g. "migrate this Power BI report to Sigma" — and the skill drives discovery → translation → build → parity.

What's in the marketplace

Plugin	Source tool	Skills it installs
tableau-to-sigma	Tableau	tableau-to-sigma, tableau-assessment
powerbi-to-sigma	Power BI	powerbi-to-sigma, powerbi-assessment
qlik-to-sigma	Qlik Sense / Cloud	qlik-to-sigma, qlik-assessment
thoughtspot-to-sigma	ThoughtSpot	thoughtspot-to-sigma, thoughtspot-assessment

In Claude Code, installed skills are namespaced — e.g. /powerbi-to-sigma:powerbi-assessment.

The shared shape

Every converter follows the same phased flow:

Discover   →  pull the source model + report/sheets/dashboards
Translate  →  measures/calcs/expressions → Sigma formulas (a converter handles the bulk;
              a gap-scout sub-agent validates the hard cases against the live Sigma API)
Data model →  build the Sigma data model (tables + relationships + metrics), reconciled to the warehouse
Workbook   →  rebuild the pages/visuals as a Sigma workbook (layout applied last)
Parity     →  query Sigma vs the source warehouse — GREEN only on a match

Each plugin's skills/<name>/SKILL.md is the entry point; refs/ holds the spec gotchas and scripts/ the pipeline. Skills are self-contained — no external paths to wire up.

Requirements

• A coding agent that runs skills (Claude Code, Cursor, Cortex Code, …) with the Sigma data model converter MCP available (provides the convert_*_to_sigma tools).
• A Sigma API token and a Sigma connection pointing at the same warehouse as the source content (needed for the parity gate).
• Per-tool source access — see each plugin's refs/connection.md (e.g. qlik-cli for Qlik; device-code / Fabric getDefinition for Power BI).

Provenance

The reference migrations and example IDs throughout these skills come from the author's own Sigma + Snowflake test tenant (a retail/workforce star schema). They're included as worked examples — substitute your own connection, data model, and folder IDs.

License

MIT.

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Roadmap: a domo-to-sigma plugin is in development and will join the marketplace once it clears the same parity bar.