context-compression

context-compression is a skill for Claude Code, Codex from sheng3233836/vibe-coding-standards. It costs 58 tokens per session (2,379 once invoked), scanned A, original, no licence file.

A skill for shortening the information an automated coding assistant keeps from a conversation. Context is the working information available to the assistant at a given time.

In plain words
What is it for?
It is for summarising conversation history, reducing token use, and handling sessions that approach context limits.
Why use it?
It helps reduce the amount of conversation history and other information kept in view during long sessions.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit It is for summarising conversation history, reducing token use, and handling sessions that approach context limits.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/sheng3233836/vibe-coding-standards/context-compression
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.

Any agent
npx skills add sheng3233836/vibe-coding-standards --skill context-compression
Clone the repo
git clone --depth 1 https://github.com/sheng3233836/vibe-coding-standards

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for context-compression

README.md
[![agentmods](https://agentmods.dev/badge/skills/sheng3233836/vibe-coding-standards/context-compression/github.svg)](https://agentmods.dev/skills/sheng3233836/vibe-coding-standards/context-compression)
Your own site
<a href="https://agentmods.dev/skills/sheng3233836/vibe-coding-standards/context-compression"><img src="https://agentmods.dev/badge/skills/sheng3233836/vibe-coding-standards/context-compression/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for context-compression

Your own site · 80×15
<a href="https://agentmods.dev/skills/sheng3233836/vibe-coding-standards/context-compression"><img src="https://agentmods.dev/badge/skills/sheng3233836/vibe-coding-standards/context-compression.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 58 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,379 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00058 $0.02379
Opus 5.5 $0.00023 $0.00952
Sonnet 5.5 $0.00012 $0.00476
Haiku 4.5 $0.00006 $0.00238

Measured 2mo ago against content hash 1699984e7631, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

context-compression 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 2mo ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/compression_evaluator.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/context-compression/SKILL.md · 266 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 2mo ago First seen · 266 lines · 58 tokens per session scan A 1699984e7631

Subscribe to this mod's changes

context-compression is a skill published in the GitHub repository sheng3233836/vibe-coding-standards (1 stars, last pushed 7mo ago), with no licence file. It adds 58 tokens to every session and 2,379 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-08-31.

Related

context-compression compared with skills from other repositories

context-compression next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
context-compressionsheng3233836/vibe-coding-standardsSkill17mo agononeA58Claude Code, Codex
knowledge-ingestopenclaw/openclawSkill394ktodayMITA80Claude Code, Codex
mem0-oss-to-platformmem0ai/mem0Skill69kyesterdayApache-2.0A217Claude Code, Codex
forgetasgeirtj/system_prompts_leaksSkill71ktodayCC0-1.0A0Claude Code, Codex
Cortexdanielmiessler/LifeOSSkill20k2d agoMITA184Claude Code
memoryopensquilla/opensquillaSkill7.1k2d agoApache-2.0A44Claude Code, Codex
ha-data-storesshiwenwen/hope-agentSkill1.9ktodayMITA115Claude Code, Codex