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- Session Initialization Rule: Load ONLY SOUL.md, USER.md, IDENTITY.md, memory/YYYY-MM-DD.md * Skip MEMORY.md, session history on startup (load on-demand via memory_search) * Result: 50KB → 8KB context = 80% token savings - Model Routing: Haiku default, Sonnet/Opus for complex reasoning only * Haiku: routine tasks, memory searches (/bin/bash.00025/1K tokens) * Sonnet/Opus: architecture, security, complex debugging - Prompt Caching enabled for Sonnet + Opus (90% discount on reused content) * TTL: 5m cache window * Static files (SOUL.md, USER.md) cached automatically * Savings: 5KB prompt = $0.015 → $0.0015 per reused call - Rate Limits: 5s between API calls, 10s between searches, max 5 searches/batch - Budgets: $5/day warning @ 75%, $200/month warning @ 75% Gateway config (~/.openclaw/clawdbot.json): * agents.defaults.model.cache enabled for opus + sonnet * rateLimits + budgets sections added * heartbeat routing to Ollama ready (manual setup) Files updated: - AGENTS.md: Core optimization rules documented - memory/kb/tools/session-initialization.md: Detailed initialization strategy - ~/.openclaw/clawdbot.json: Model config + caching + rate limits + budgets