Semantic Compression

Apply semantic logic compression (Ovchinnikov method) when crafting prompts for LLMs or describing complex conditional logic. Use this skill whenever the user asks to: write or optimise a prompt for an LLM, compress or rewrite a task description, describe multi-condition business logic (if/and/or/not chains), or asks why an LLM misunderstood their instructions. Also trigger when the user says ‘compress the logic’, ‘write a prompt for’, ‘the LLM doesn't understand’, ‘simplify the conditions’, or similar intents. Also trigger when the user wants to use output modifiers such as →code or →no-meta,

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Install

skills CLI (Claude Code, Cursor, Codex and more)

npx skills add therealmoronto/claude-semantic-compression --skill semantic-compression

Manual install

git clone --depth 1 https://github.com/therealmoronto/claude-semantic-compression.git /tmp/claude-semantic-compression
mkdir -p ~/.claude/skills
cp -r /tmp/claude-semantic-compression/. ~/.claude/skills/semantic-compression

Personal skills live in ~/.claude/skills. Use .claude/skills in a project folder to share a skill with your team.

From the SKILL.md

# Semantic Logic Compression (Information Compression Protocol)

Convert natural language logic into structured symbolic form that LLMs parse more reliably.
This is NOT summarization — it preserves all conditions while making structure explicit.

## When to apply

- Multi-condition logic: "if A and B and not C, then D"
- Business rules with temporal constraints ("within 5 minutes", "last 30 days")
- Any prompt where missed conditions would break the expected output
- Code generation tasks where logic ambiguity causes junior-style output
- When the user needs to radically save context tokens (up to 70-80% reduction).

## Core symbol set

### 1. Logical Operators
| Natural language     | Symbol | Example                          |
|----------------------|--------|----------------------------------|
| and              | `∧`    | `платёж OK ∧ товар есть`         |
| or             | `∨`    | `admin ∨ moderator`              |
| if...then| `→`    | `T > 30 → включить кондиционер`  |
| not             | `¬`    | `¬отмена за 5 мин`               |
| then and only then | `↔`    | `доступ ↔ верифицирован`         |
| for all             | `∀`    | `∀ item → validate(item)`        |
| exists           | `∃`    | `∃ active_session`               |

### 2. Structural Markers & Modifiers
Use these markers to categorize constraints and instructions.

| Type                 | Marker / Symbol | Description / Example                          |

Read the full skill on GitHub

Details

Skill name: semantic-compression
Repository: therealmoronto/claude-semantic-compression
License: MIT
Repo updated: 14 May 2026

FAQ

What does the Semantic Compression skill do?

How do I install the Semantic Compression skill?

skills CLI (Claude Code, Cursor, Codex and more): npx skills add therealmoronto/claude-semantic-compression --skill semantic-compression. Skills go in ~/.claude/skills (personal) or .claude/skills (project), and Claude loads them automatically when a task matches the description.

Is Semantic Compression popular?

It lives in therealmoronto/claude-semantic-compression, which has 5 GitHub stars and 0 forks.

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