Mostly Good Metrics Skills

Official portable agent skills for Mostly Good Metrics. They work with Codex, Claude Code, and other agents supported by the standard skills installer.

The skills are also published as @mostly-good-metrics/skills, so projects can keep them in node_modules and sync them with supporting skill tooling.

Install

# Choose skills and agent targets interactively.
npx skills add Mostly-Good-Metrics/skills

# Preview the available skills.
npx skills add Mostly-Good-Metrics/skills --list

# Install one skill for Codex without prompts.
npx skills add Mostly-Good-Metrics/skills --skill instrument-my-app --agent codex --global --yes

Included skills

• instrument-my-app — instrument an app with MGM safely.
• analyze-metrics — investigate product metrics with real MGM data.
• funnel-doctor — build and diagnose conversion funnels.
• weekly-review — produce a focused weekly product report.
• build-dashboard — create saved queries and dashboard widgets that answer decisions.
• run-experiment — plan, launch, monitor, and conclude A/B experiments.
• retention-cohorts — create and interpret cohort retention analyses.
• audit-instrumentation — validate event contracts and debug bad analytics data.

MCP and CLI coverage

Every skill states its MCP tools and CLI equivalents. Both surfaces support the complete product-analytics workflow: event catalog, queries, funnels, retention, experiments, and dashboard widgets. Skills use the connected MCP for interactive work and the CLI for local scripting or when it is the user's preferred path.

The Claude Code plugin lives separately at Mostly-Good-Metrics/claude-plugin. This repository contains only cross-agent portable skills.