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f227eeb90c
Local-path plugins (source is a string like "./plugins/foo" in
marketplace.json) without a manifest version cache at
~/.claude/plugins/cache/{marketplace}/{plugin}/unknown/ forever.
The cache check in claude-cli's copyPluginToVersionedCache sees
pathExists(.../unknown/) → true → skips re-extraction, even after
the marketplace content updates. Users are stuck with stale plugin
files until they manually delete the cache.
Adding "version": "1.0.0" fixes this because calculatePluginVersion
reads the manifest from the freshly-synced marketplace tree (not the
stale cache), and manifest.version is priority #1 in version
resolution. New version → new cache path → cache miss → re-extract.
This is preferable to the GCS-SHA fallback approach
(anthropics/claude-cli-internal#24773) because:
- Per-plugin granularity: only bumped plugins re-extract, not all
27 on every marketplace push
- No disk accumulation from unrelated marketplace churn
- Fixes both the runtime loader path AND the migration path
(manifest.version is priority #1 in both)
- No claude-cli code change needed
Remote-sourced plugins (github/git/url) already get a git SHA as
their version and are unaffected.
Playground Plugin
Creates interactive HTML playgrounds — self-contained single-file explorers that let users configure something visually through controls, see a live preview, and copy out a prompt.
What is a Playground?
A playground is a self-contained HTML file with:
- Interactive controls on one side
- A live preview on the other
- A prompt output at the bottom with a copy button
The user adjusts controls, explores visually, then copies the generated prompt back into Claude.
When to Use
Use this plugin when the user asks for an interactive playground, explorer, or visual tool for a topic — especially when the input space is large, visual, or structural and hard to express as plain text.
Templates
The skill includes templates for common playground types:
- design-playground — Visual design decisions (components, layouts, spacing, color, typography)
- data-explorer — Data and query building (SQL, APIs, pipelines, regex)
- concept-map — Learning and exploration (concept maps, knowledge gaps, scope mapping)
- document-critique — Document review (suggestions with approve/reject/comment workflow)
Installation
Add this plugin to your Claude Code configuration to enable the playground skill.