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By cssmith615
Smart context injection for Claude Code. Injects only relevant rules per prompt, remembers architectural decisions, and catches contradictions in real-time. No bloated CLAUDE.md — just the right context at the right time.
Give Claude the right rules at the right time. Nothing more.
Chuck is a Claude Code plugin that automatically injects relevant rules into each prompt, remembers your architectural decisions, and catches contradictions in real-time — without a bloated CLAUDE.md.
Context injection — Reads your prompt, scores it against your domain rules using semantic matching (TF-IDF), and injects only what's relevant. React rules when building components. Git rules when committing. Nothing for unrelated prompts.
Decision Ledger — Stores architectural decisions with reasoning (use Zustand, not Redux — boilerplate) and automatically injects them when the topic surfaces. Claude never re-suggests what you already rejected.
Quality Monitor — Watches every Write/Edit and warns immediately if Claude starts writing code that contradicts an active decision. Zero tokens when clean, ~30–50t only on contradiction.
Install this plugin through the Claude Code plugin manager. Chuck requires Python 3.
After installing, initialize Chuck in your project:
npm install -g chuck-core
chuck init
After chuck init, your project will have a .chuck/ directory:
.chuck/
├── manifest.json # Domain config and token budget
├── domains/ # Rule files per domain
├── decisions/ # Architectural decision records
└── sessions/ # Local usage data (gitignored)
Use the built-in Chuck Setup Wizard to generate your manifest.json visually — select your stack, adjust the token budget, and copy the result.
chuck decide "Use Zustand for state management" --tags state,react
# Prompts for rejected alternatives and reason
chuck init # Auto-detect stack and generate starter rules
chuck list # Show active domains and token costs
chuck stats # See which rules are firing
chuck suggest # Get suggestions based on unmatched prompts
chuck sync # Push/pull rules via git
chuck decide # Log and manage architectural decisions
chuck decide:audit # Find stale decisions that never fired
chuck compact # Generate session handoff brief
This plugin includes two interactive HTML tools:
Chuck Setup Wizard (/chuck:setup-wizard) — visually configure your manifest.json. Pick your stack, set token budget, copy the result.
Chuck Decision Logger (/chuck:decision-logger) — log decisions through a form. Fill in decision, rejected alternatives, and reason. Copies the pre-filled chuck decide command.
npm install -g chuck-coreApache 2.0
Modifies files
Hook triggers on file write and edit operations
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Sign in to claimBased on adoption, maintenance, documentation, and repository signals. Not a security audit or endorsement.
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