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