agentmods.dev

context-optimization

A collection of methods for helping coding agents handle more working context within the same model limits.

In plain words
What is it for?
Context compaction, hiding less useful observations, improving reuse of cached context, and splitting context into separate parts.
Why use it?
It aims to reduce lost context during long tasks by managing, compressing, and partitioning information.

Plugin for Claude Code

11 2mo ago A scan tokens not measured original MIT
View the source file viktorbezdek/skillstack
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Claude Code
/plugin marketplace add viktorbezdek/skillstack
agentmods
npx agentmods add plugins/viktorbezdek/skillstack/context-optimization
Clone the repo
git clone --depth 1 https://github.com/viktorbezdek/skillstack

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

context-optimization scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

context-optimization/.claude-plugin/plugin.json · 20 lines

What it actually says

{
  "name": "context-optimization",
  "version": "1.0.11",
  "description": "Techniques for extending effective context capacity through compaction, observation masking, KV-cache optimization, and context partitioning. Double or triple effective context without larger models.",
  "author": {
    "name": "Viktor Bezdek",
    "url": "https://github.com/viktorbezdek"
  },
  "license": "MIT",
  "repository": "https://github.com/viktorbezdek/skillstack/tree/main/context-optimization",
  "keywords": [
    "claude-code",
    "skill",
    "context-optimization",
    "kv-cache",
    "observation-masking",
    "compaction"
  ]
}
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 20 lines scan A 0b4253492203

Subscribe to this mod's changes

context-optimization is a plugin published in the GitHub repository viktorbezdek/skillstack (11 stars, last pushed 2mo ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Data and AIagenticanthropicclaudeclaude-codeclaude-skillsskills
Related

Other plugins, from other repositories

google-plugins

Plugin marketplace listing 17 plugins: alloydb, alloydb-omni, bigtable, cloud-sql-mysql, cloud-sql-postgresql.

google/skills · not measured

discover

Discover which AI agent to build — map automation outcomes to solvable opportunities, validate assumptions, and decide build vs buy. Use when exploring agent ideas, analyzing automation opportunities, running build-or-buy analysis, or estimating agent development costs.

kimsanguine/hplan · not measured

vibe-plugins

Plugin marketplace listing 1 plugin: vibe-engineering.

ash1794/vibe-engineering · not measured

supabase

Supabase MCP integration for database operations, authentication, storage, and real-time subscriptions. Manage your Supabase projects, run SQL queries, and interact with your backend directly.

fazxes/Claude-code · not measured

fmh66

Plugin marketplace listing 1 plugin: kernel-opt-agent.

fmh66/kernel-opt-agent · not measured

nextjs

Official Next.js skills: adopt and optimize Cache Components, adopt Partial Prefetching, and verify runtime behavior against a running dev server.

vercel/next.js · not measured