Claude Code Plugin¶

The claude-code-plugin/ subdirectory ships prompt-decorators as an installable Claude Code plugin. Users prepend a ::Name(params) or +++Name(params) line to any prompt and the plugin's UserPromptSubmit hook expands it into precise instructions using the prompt-decorators engine before the model sees the prompt.

This page is a pointer. The canonical reference for the plugin — full subcommand list, config schema, security posture, vendoring, sync policy — lives next to the plugin source at claude-code-plugin/README.md. This page summarises and links; that README is the source of truth. The authoring guide (how to write a new decorator) and the usage guide (when to suggest one) live as installable skills under claude-code-plugin/skills/.

What the plugin does (short version)¶

• Inline syntax: ::Name or +++Name at the start of a prompt line. Mid-line occurrences are ignored (so Rust/C++ paths like std::collections::HashMap; don't false-trigger).
• /decorate slash command: browse, preview, search, toggle always-on list, control auto-decorate mode.
• Auto-decorate (opt-in): a two-pass selector picks 0-3 decorators per prompt. Can be one-shot, stateful, or off.
• User registry override: personal decorators under $HOME/.config/prompt-decorators/extensions/ survive vendor re-syncs.
• Self-contained: the engine and decorator registry are vendored into the plugin directory, so no pip install is required by end users.

Install¶

From Claude Code:

/plugin marketplace add synaptiai/synapti-marketplace
/plugin install prompt-decorators

Further reading¶

• Plugin reference: claude-code-plugin/README.md — inline syntax, /decorate subcommands, auto-decorate internals, configuration, security, full how-it-works.
• Usage guidance skill: skills/prompt-decorators-usage/SKILL.md — when and how to suggest decorators for a given prompt.
• Authoring skill: skills/authoring-decorators/SKILL.md — how to write a new decorator (naming, schema, testing).
• Vendoring and sync policy: claude-code-plugin/VENDORING.md.
• Marketplace entry: the companion synapti-marketplace repo points at this directory via a git-subdir source, so plugin updates flow through automatically.