hot-paths

What problem does it solve?

Large developer-agent codebases and tools can suffer noticeable delays when modules initialize at process start, when per-turn context is assembled, or when tool inputs are validated on every call. This Skill captures the patterns used to keep Claude Code's startup under a second and to minimize latency during each API turn and tool invocation.

Core Features & Use Cases

• Deferred schema initialization via lazySchema to avoid Zod construction at module load.
• Build-time dead-code elimination using feature flags to keep bundles small.
• Memoization and targeted cache invalidation for expensive per-conversation computations like git status.
• Parallel asynchronous initialization with Promise.all and simple profiling checkpoints to measure load stages.
• Use case: Apply when adding a new tool whose input schema or top-level initialization threatens to regress startup time, or when per-turn prompt assembly becomes a performance bottleneck.

Quick Start

Wrap top-level Zod schemas in lazySchema, memoize expensive per-conversation functions, and replace sequential init steps with Promise.all to reduce startup and per-turn latency.