Claude-thermos keeps your Claude session warm for you

In plain words

Claude-thermos is a tool that maintains active Claude sessions by preventing them from timing out. Designed for users who work with Claude over extended periods, it automatically keeps conversations alive without requiring manual intervention. The tool is available on GitHub for developers and regular users who need uninterrupted access to their Claude sessions during long working sessions.

written from the facts on this page · September 2026

From the sources

Stop paying to rebuild your Claude Code cache. When your main agent waits on a subagent for more than 5 minutes, its prompt cache silently expires, and the next turn re-encodes your entire conversation at the write rate instead of reading it back cheap. On long sessions with many subagents that's roughly 20% of your bill. claude-thermos keeps the cache warm so you never pay that tax. uvx claude-thermos # instead of: claude uvx claude-thermos -p " fix the bug " # any claude args pass straight through Requires Python 3.11+ and the claude CLI on your PATH . That's it. Warming runs automatically in the background. To disable it for a run without changing the command, set…from github.com

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