From reference
Guide on when and how to use Claude Code's thinking modes and effort levels. Use when tackling complex problems that need deep reasoning.
npx claudepluginhub artmin96/forge-studio --plugin referenceThis skill uses the workspace's default tool permissions.
Guides Next.js Cache Components and Partial Prerendering (PPR) with cacheComponents enabled. Implements 'use cache', cacheLife(), cacheTag(), revalidateTag(), static/dynamic optimization, and cache debugging.
Migrates code, prompts, and API calls from Claude Sonnet 4.0/4.5 or Opus 4.1 to Opus 4.5, updating model strings on Anthropic, AWS, GCP, Azure platforms.
Analyzes BMad project state from catalog CSV, configs, artifacts, and query to recommend next skills or answer questions. Useful for help requests, 'what next', or starting BMad.
Control how hard Claude thinks with /effort or the CLAUDE_CODE_EFFORT_LEVEL env var:
| Level | When to use | Token cost |
|---|---|---|
| low | Simple lookups, quick questions, high-volume tasks | Minimal |
| medium | Standard development, balanced speed/quality | Moderate |
| high | Complex reasoning, nuanced analysis, difficult bugs (DEFAULT) | Higher |
| max | Absolute hardest problems, multi-step deduction | Highest |
Include "ultrathink" anywhere in your prompt for a one-off max-effort response. No need to change global settings.
Example: "ultrathink: design the auth system for this app considering OAuth, JWT, and session-based approaches"
Claude dynamically decides how much to think based on query complexity. Higher effort + harder query = more thinking. Easy queries get direct responses even at high effort — no token waste.
/effort to change level