Files
everything-claude-code/rules/performance.md
Affaan Mustafa 45959c326e Initial release: Complete Claude Code configuration collection
Battle-tested configs from 10+ months of daily Claude Code usage.
Won Anthropic x Forum Ventures hackathon building zenith.chat.

Includes:
- 9 specialized agents (planner, architect, tdd-guide, code-reviewer, etc.)
- 9 slash commands (tdd, plan, e2e, code-review, etc.)
- 8 rule files (security, coding-style, testing, git-workflow, etc.)
- 7 skills (coding-standards, backend-patterns, frontend-patterns, etc.)
- Hooks configuration (PreToolUse, PostToolUse, Stop)
- MCP server configurations (15 servers)
- Plugin/marketplace documentation
- Example configs (project CLAUDE.md, user CLAUDE.md, statusline)

Read the full guide: https://x.com/affaanmustafa/status/2012378465664745795
2026-01-17 17:49:33 -08:00

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# Performance Optimization
## Model Selection Strategy
**Haiku 4.5** (90% of Sonnet capability, 3x cost savings):
- Lightweight agents with frequent invocation
- Pair programming and code generation
- Worker agents in multi-agent systems
**Sonnet 4.5** (Best coding model):
- Main development work
- Orchestrating multi-agent workflows
- Complex coding tasks
**Opus 4.5** (Deepest reasoning):
- Complex architectural decisions
- Maximum reasoning requirements
- Research and analysis tasks
## Context Window Management
Avoid last 20% of context window for:
- Large-scale refactoring
- Feature implementation spanning multiple files
- Debugging complex interactions
Lower context sensitivity tasks:
- Single-file edits
- Independent utility creation
- Documentation updates
- Simple bug fixes
## Ultrathink + Plan Mode
For complex tasks requiring deep reasoning:
1. Use `ultrathink` for enhanced thinking
2. Enable **Plan Mode** for structured approach
3. "Rev the engine" with multiple critique rounds
4. Use split role sub-agents for diverse analysis
## Build Troubleshooting
If build fails:
1. Use **build-error-resolver** agent
2. Analyze error messages
3. Fix incrementally
4. Verify after each fix