# Reduce session-start context load via rules path-scoping and disable-model-invocation

> Session context is at 50% before any work begins. Root causes identified: (1) All custom agent descriptions load at session start (~5k tokens for 50+ agents) with no lazy loading mechanism. (2) CLAUDE.md files load unconditionally and in full (~18k tokens for memory files). (3) All plugin skills load descriptions at startup. Research confirmed these optimization primitives exist but are unused: 'paths' frontmatter in .claude/rules/*.md loads rule only when working with matching file patterns; 'd

- Skill: `tools-only/reduce-session-start-context-load-via-rules-path-scoping-and` (Agent Skill, multi-file: 3 files)
- Install (CLI): `npx skillmds@latest add tools-only/reduce-session-start-context-load-via-rules-path-scoping-and`
- Raw SKILL.md: https://api.skillmd.com/api/skills/tools-only/reduce-session-start-context-load-via-rules-path-scoping-and/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- Author: tools-only (https://skillmd.com/u/tools-only)
- Updated: 2026-09-22
- Page: https://skillmd.com/skills/tools-only/reduce-session-start-context-load-via-rules-path-scoping-and

---


**Research first**: Which .claude/rules/*.md files lack paths scoping? Which skills are candidates for disable-model-invocation? Can domain-router subagents with skills field replace always-on orchestrator skill loading? See .planning/research/context-optimization-research.md