What is context compaction in Claude Code?

Context compaction is the practice of summarizing previous conversational turns and tool outputs when approaching token limits, allowing the agent to continue working with a high-fidelity summary instead of a full, bloated history.

How does observation masking reduce token usage?

Observation masking replaces lengthy, verbose tool outputs that have already served their purpose with compact references, preserving the agent's reasoning while freeing up significant space in the context window.

When should I use context partitioning?

Partitioning is best used for large projects where sub-tasks can be handled by isolated agents with their own clean contexts, preventing a single context window from becoming overwhelmed by unrelated details.

Can this skill help reduce AI API costs?

Yes. By optimizing the way context is structured and using techniques like KV-cache optimization and summarization, it significantly reduces the number of tokens processed and generated.

Context Optimization for AI Agents

Name: Context Optimization for AI Agents
Author: mshraditya

bymshraditya

0•

Data Science & ML

Optimizes LLM context windows through compaction, masking, and caching strategies to maximize performance and minimize token costs.

The Context Optimization skill empowers Claude to handle complex, long-running tasks by strategically managing its context window through advanced engineering techniques. By implementing compaction (summarizing older messages), observation masking (eliding verbose tool outputs), and KV-cache optimization, this skill allows Claude to effectively double or triple its useful capacity. It is essential for production-grade agent systems where maintaining high reasoning quality, reducing latency, and controlling API costs are critical requirements.

Key Features

01Context partitioning via sub-agent task isolation

02KV-cache optimization for prefix stability and faster inference

030 GitHub stars

04Observation masking for verbose tool and API outputs

05Trigger-based budget management for token utilization

06Intelligent context compaction and summarization

Use Cases

01Reducing operational costs by eliding redundant data in large prompts

02Improving response latency in complex multi-step reasoning trajectories

03Scaling long-running agent sessions without losing critical history

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add mshraditya/skillsforagentregistry context-optimization

For use in Claude.ai and ChatGPT

Download Skill