Principle Guard The Context Window Skill for Claude
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.
264 tokens
context cost
the whole folder, loaded on every use
1
files
instructions only
0
copies elsewhere
how many repositories repackaged it
255
stars on the repo
on the repository, not the skill itself
Install
one command, takes just this skill from the repositorynpx skills add https://github.com/michael-denyer/pstack-claude --skill principle-guard-the-context-windowWhat it tells the agent to use
found in the instruction text
Task
spawns other agents
The instruction itself
1 sections, as written by the authorGuard 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.
- Don't read what you won't use. Read selectively based on relevance. If a file isn't needed for the current task, skip it.
- 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.
How to use it
Copy the folder
Take michael-denyer/principle-guard-the-context-window from the repository into ~/.claude/skills for personal
use, or into .claude/skills inside a project.
Check the name does not clash
The agent identifies a skill by the name field in its header. Two skills with the
same name cannot sit side by side — one of them will be ignored.