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compacter

v2.2.1

Published

Policy-based context control for CLI coding agents (Claude Code, Codex, opencode): choose what gets compacted, carry context between chats.

Vulnerabilities

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Links

Git

Maintainers

souravrajvisouravrajvi

Keywords

claude-codecodexopencodecontextcompactionllmcoding-agents

Readme

compacter

You decide what your coding agent remembers. When a long chat gets compacted, compacter lets you choose which messages are kept word for word, which are summarized, and which are dropped, and lets you carry context into a new chat. Works with Claude Code, Codex and opencode. Your original chat is never changed.

npx compacter doctor              # check your installed agents against the tested versions
npm install -g compacter

Quick start

cd your-project
compacter start --agent claude-code     # import the current chat
compacter status                        # list messages with their tags
compacter compact --preview             # read the summary before anything is written
compacter compact --apply               # write a new, compacted chat next to the original
compacter carry --agent claude-code --only 3-9 --new    # carry just some messages into a new chat

In real Claude Code testing, a 418-message chat (about 59,000 tokens) compacted to about 2,200 tokens and was resumed with the key facts intact.

About this package

This npm package is a small launcher. compacter itself is a Python tool and needs Python 3.10+ on your machine. On first run the launcher installs it into a private virtualenv at ~/.compacter/npm-venv (from PyPI, falling back to the GitHub source), then runs it. Your global Python is untouched. Delete that folder to reset.

Full docs: https://github.com/Souravrajvi0/compacter