symbiosis-brain 0.1.0

MCP memory server with semantic search, graph, and bi-temporal tracking

🧠 Symbiosis Brain

Stop re-explaining your project to Claude. Make it remember. Build your symbiosis.

Persistent memory for Claude Code — a markdown brain that lives next to your code, with skills and hooks that make Claude actually use it. Local, file-based, Obsidian-compatible.

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What changes

You stop saying "Hi Claude, my stack is X, last week we decided Y…" every session. Claude remembers your stack, your projects, your past decisions. Painful lessons resurface before you trip on them. Knowledge flows between repos. A smart hook saves the session before /compact swallows it.

368 notes, 431 entities, all wiki-linked — and this is just a few weeks of real work. This is what your head looks like when you're juggling five projects at once. Don't panic — Claude knows exactly where to look.

Install (30 seconds)

uv tool install symbiosis-brain
symbiosis-brain setup claude-code

That's it. Restart Claude Code — brain-welcome introduces itself, asks two friendly questions, and you're done.

🤝 Augments Claude Code — never overrides it. Symbiosis Brain adds a memory layer. Every built-in Claude Code feature keeps working. Your existing hooks, skills, slash commands, and settings stay intact — we deep-merge our config with a .bak backup, and symbiosis-brain uninstall restores everything.

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Why a markdown brain?

• 📂 Your knowledge, your files. Plain .md in a folder you pick. Human-readable, git-trackable, opens in Obsidian as a graph.
• 🔍 Hybrid search out of the box. SQLite + FTS5 + sqlite-vec. Local, fast, no cloud, no API key, no per-token pricing.
• 🔗 Wiki-links connect your projects. brain_context walks the graph N hops — decisions in one repo surface as context in another.
• ⏰ Bi-temporal. Every fact has a valid_from / valid_to date. Stale knowledge gets a warning, not silent rot.
• 🪶 Quiet by design. No Clippy, no nag. Hooks fire only when they earn the interruption (e.g., context at 70% → "save before /compact swallows this").
• 🧩 Skills shipped, not just storage. brain-init, brain-recall, brain-save, brain-project-init make Claude use the memory — not pray that it does.
• 🤝 Layered, never invasive. Adds capability without disabling any of Claude Code's defaults. Uninstall is one command.

What it feels like

You:    Continue from where we left off yesterday.

Claude: [brain-recall fires silently]
        I see we paused on the auth migration after deciding to
        skip JWT rotation — the blocker was the legacy refresh
        token format. Pick up there?

Same vault, days apart, different process. No prompt engineering, no copy-pasting context. The skill brain-recall fired on its own because the request triggered it.

How it works (60 seconds)

A tiny MCP server backed by a folder of markdown notes. SQLite indexes them with FTS5 + vector search; wiki-links form a graph; companion skills wire the recall/save loop into Claude Code's own session lifecycle (SessionStart, Stop, PreCompact hooks).

You write nothing manually. The vault grows as you work.

Why this, not…

• Plain CLAUDE.md / MEMORY.md — they grow into a 10K-line blob with no search and no decay. Symbiosis Brain decomposes into searchable, scoped, time-stamped notes.
• basic-memory — closest in spirit (markdown + Obsidian). We add hybrid search (FTS5 + vector), skills/hooks that drive use, bi-temporal valid_to, per-project + global scope.
• mem0 / Letta — different category (cloud SaaS / agent SDK). We're local-first storage your existing Claude Code uses.
• mcp-memory-service — they ship REST/dashboard. We ship human-readable markdown + skills.

Maintenance

symbiosis-brain doctor                       # health check
symbiosis-brain setup claude-code --repair   # fix only what's broken
symbiosis-brain uninstall                    # restore settings, vault preserved
uv tool upgrade symbiosis-brain              # update

FAQ

Is my knowledge private? 100%. Everything is local files + a local SQLite index. No cloud, no telemetry, no API calls.

Will this break my Claude Code setup? No. Symbiosis Brain layers on top of Claude Code — it never disables built-in features, overrides your hooks, or removes your existing skills. Config is deep-merged with a .bak backup. uninstall restores everything.

Can I open the vault in Obsidian? Yes — that's a first-class use case. The welcome flow can install Obsidian for you and open your first note as a graph.

Does it work with other AI agents? Today: tuned for Claude Code. The MCP layer is portable; skill-driven UX is Claude-Code-specific but the storage works anywhere MCP works.

What about the name? Symbiosis — a mutually beneficial partnership. The tool lives next to Claude; Claude becomes more useful; your knowledge survives the next /compact. Build your symbiosis.

How do I delete everything? symbiosis-brain uninstall restores your settings.json from backup. The vault folder is preserved — delete it manually if you want a clean slate.