Synthelion
Description
Synthelion compresses prompts before they reach any AI model — cutting token usage by up to 70%, reducing API costs, and speeding up responses. It works with any agent or framework: Claude Code, OpenAI, LangChain, OpenCode, Cursor, and more.
Installation
This entry records only its repository, not the path inside it, so there is no
exact command to give. Open the source below and copy the folder into
~/.claude/skills/, or the file into ~/.claude/agents/.
README
Synthelion — Universal Token Compressor and Prompt Manager for AI Agents

[](https://pypi.org/project/synthelion/) [](https://pypi.org/project/synthelion/) [](https://opensource.org/licenses/MIT) [](https://github.com/francescopaolopassaro/synthelion/stargazers) [](https://modelcontextprotocol.io)
Synthelion compresses prompts before they reach any AI model — cutting token usage by up to 70%, reducing API costs, and speeding up responses. It works with **any agent or framework**: Claude Code, OpenAI, LangChain, OpenCode, Cursor, and more.
Supports 50+ languages out of the box. No AI model required. No configuration.
"Why use many tokens when few tokens do trick?" — A caveman (and your wallet).
Table of contents
- Why Synthelion?
- Privacy & Security — PrivacyGuard
- EnterpriseGuard — outbound data-loss-prevention firewall
- Synthelion vs other prompt/context-compression tools
- Quick install — one command
- Install (manual)
- Update
- Set up on Claude Code
- [Automatic prompt compression — Claude Code hook](#automatic-prompt-compress
Related Skills
Agency Agents
A complete AI agency at your fingertips - From frontend wizards to Reddit community ninjas, from whimsy inject
AI Awesome Llm Apps
100+ AI Agents, Agent Skills and RAG Apps - Free and Open Source.
AI Firecrawl
🔥 The API to search, scrape, and interact with the web for AI
AI Artifacts Builder
Suite of tools for creating elaborate, multi-component claude.ai HTML artifacts using modern frontend web tech
AI Headroom
Compress tool outputs, logs, files, and RAG chunks before they reach the LLM. 20% fewer tokens for coding agen
AI CrewAI
Framework for orchestrating role-playing, autonomous AI agents. By fostering collaborative intelligence, CrewA
AI