Principle Guard The Context Window Agent Skill
by backnotprop
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.
129 tokens
context cost
SKILL.md, read when the skill is used
1
files
instructions only
0
copies elsewhere
how many repositories repackaged it
2 793
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/backnotprop/pstack --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
Why: Context overflow degrades reasoning quality, creates compression artifacts, and halts progress.
Pattern:
- Size phases and cap scope. Limit files per phase, set turn budgets, account for mechanism costs.
How to use it
Copy the folder
Take backnotprop/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.