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Metabase

Open-source BI and analytics platform — ships 13 Claude skills and 6 slash commands for Clojure, TypeScript, e2e testing, docs, tracing, and analytics instrumentation.

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Metabase

Open-source business intelligence platform that lets anyone explore and understand their data. Metabase ships 13 Claude skills and 6 slash commands for contributors working inside the codebase — covering Clojure backend, TypeScript frontend, Cypress e2e testing, documentation, and observability.

One of the most comprehensive Claude skill suites in any open-source project. If you're contributing to Metabase, these skills give Claude deep knowledge of Metabase's conventions, style guides, and tooling.

Contributor Skills

Metabase ships 13 skills in .claude/skills/ covering the full contributor workflow:

Clojure Backend

  • clojure-write — Write Clojure code following Metabase conventions, MBQL query patterns, and DB/model structure
  • clojure-review — Review Clojure code for correctness, style, naming, docstrings, and module visibility
  • clojure-eval — Evaluate Clojure code in the live running Metabase REPL
  • add-malli-schemas — Add Malli schemas to API endpoints with proper validation timing and error handling
  • add-tracing — Add distributed tracing instrumentation to Clojure code

TypeScript Frontend

  • typescript-write — Write TypeScript code following Metabase frontend conventions
  • typescript-review — Review TypeScript for correctness and style

Testing

  • e2e-test-create — Create Cypress e2e tests for Metabase frontend features
  • e2e-test — Run and interpret e2e test results
  • mutation-testing — Run mutation testing to evaluate test suite quality

Documentation & Analytics

  • docs-write — Write documentation following the Metabase style guide (conversational tone, lead with important info)
  • docs-review — Review docs for clarity, accuracy, and style
  • analytics-events — Add analytics event tracking to Metabase features

Slash Commands

6 built-in slash commands for common contributor tasks:

CommandWhat it does
/ci-reportSummarize CI failures for a PR — categorizes as real failures, flaky tests, or infra issues
/fix-prFetch all unresolved PR review comments and fix them
/fix-issueFix a GitHub issue by number or URL
/repro-issueReproduce an issue as a failing test
/fix-flakey-testFix a flaky test
/mutation-testingRun mutation testing for a target file or function

Shared References

The skills draw from 5 shared reference files that Claude uses for context:

  • Clojure style guide — naming conventions, docstrings, visibility rules, REST API patterns, MBQL, DB/model conventions
  • TypeScript commands — ESLint, Prettier, type-check, unit test commands (bun run lint-eslint-pure)
  • Clojure commands — lint (./bin/mage kondo-updated), format, test (./bin/test-agent), REPL (./bin/mage -repl)
  • Development workflow — work in small increments, don't commit — leave changes for the human to review
  • Metabase style guide — tone, formatting rules, terminology preferences

About Metabase

Metabase is one of the most popular open-source BI tools — lets non-technical users build dashboards and run queries without SQL. The backend is Clojure, the frontend is TypeScript/React, and it uses Cypress for e2e testing.