---name: principle-guard-the-context-windowdescription: Apply when context is filling up: large outputs, long files, repeated reads, fan-out planning. Route bulk to subagents; keep summaries in the main thread, not raw payloads.disable-model-invocation: true---

Guard the Context Window

The context window is finite and non-renewable within a session. Every token should be worth its cost.

Why: Context overflow degrades reasoning quality, creates compression artifacts, and halts progress.

Pattern:

• Isolate large payloads. Route verbose outputs, screenshots, and large documents to subagents. The main context gets summaries, not raw data.
• Keep frequently used content inline. Templates and references used on every invocation belong in the skill file, not in separate files that cost a read each time.
• Size phases and cap scope. Limit files per phase, set turn budgets, account for mechanism costs.