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Agent Development / AGENT SKILL

principle-guard-the-context-window

cursor/plugins
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Protect agent context capacity by delegating bulk processing and retaining concise summaries.
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.

BEFORE YOU INSTALL

Understand the trade-offs.

SECURITY REVIEW

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Review the original instructions and requested permissions before installing.

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SKILL QUALITY

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How clearly the skill guides your agent, how complete its workflow is, and how you can check the outcome.

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The full skill.

Original instructions from the publisher’s SKILL.md

# 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.

Skill folder

Files included alongside SKILL.md in the publisher’s repository.