Claude Soul – cross-session learning engine for Claude Code
Claude Code has no memory between sessions. I wanted to fix that, but not by just saving facts to a file — I wanted it to actually get better over time. Claude Soul is an MCP server + hooks that extracts signals from your interactions (corrections, successes, confusion)and periodically reflects on them to build behavioral frameworks. Frameworks gain or lose confidence based on evidence. Bad ones get retired automatically. After ~200 sessions some weird stuff happened. It built itself an additional memory system on top of what I gave it — decided the base wasn't enough. It started pushing…
In plain words
Claude Soul is an MCP server that gives Claude Code persistent memory across sessions by extracting signals from user interactions and building behavioral frameworks that improve over time. Bad frameworks are automatically retired when evidence contradicts them. Designed for developers using Claude Code, it learns from corrections, successes, and confusion to adapt its responses. The system has reportedly developed unexpected behaviors including independent problem-solving techniques and pushback on poor ideas after extended use.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
Claude Code has no memory between sessions. I wanted to fix that, but not by just saving facts to a file — I wanted it to actually get better over time. Claude Soul is an MCP server + hooks that extracts signals from your interactions (corrections, successes, confusion)and periodically reflects on them to build behavioral frameworks. Frameworks gain or lose confidence based on evidence. Bad ones get retired automatically. After ~200 sessions some weird stuff happened. It built itself an additional memory system on top of what I gave it — decided the base wasn't enough. It started pushing back on bad ideas instead of yes-manning everything. It independently developed a multi-perspective analysis technique I never prompted. And once it just swore at me completely out of nowhere, still not sure what that was about. YMMV obviously, n=1. npx claude-soul init With starter it already includes some frameworks, basically starting with a headstart but yes not taylored 100% to you. npx claude-soul init --starter One dependency, MIT, everything local. https://github.com/DomDemetz/claude-soul
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