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Lineman runs a secondary LLM that compresses the data-heavy parts of your Claude Code session (large file reads, build output, logs), so your model spends its context on reasoning, not raw bytes. Everything below is what you need to install it, keep it up to date, and run it.

Start here

Lineman runs a second, cheaper model over the data-heavy parts of your Claude Code session, so your model spends its context on reasoning rather than raw bytes. Install it in one command, then keep working exactly as you do now.

npx -y @lineman-io/cli@latest setup

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Last updated: July 2026