Open-Brain
JSON →MCP memory server that builds a knowledge graph as you capture thoughts. 16 tools. Self-hostable.
Install
npm install -g supabase Tools · 16
- search_thoughts Semantic search with optional graph expansion (1-hop traversal)
- list_thoughts Browse thoughts filtered by type, topic, person, theme, quality, time
- thought_stats Aggregate statistics: counts, type/theme breakdown, top topics/people
- capture_thought Save a new thought from any AI client (with auto-embedding)
- get_connections Graph traversal from a thought (typed links: extends, contradicts, etc.)
- list_entities Browse extracted entities (people, tools, projects, orgs) by frequency
- weekly_review AI-generated summary of themes, open loops, and next steps
- analyze Graph analysis: hubs, density, sources, co-occurrence, themes
- dedup_review Duplicate candidates with similarity zone histogram
- refresh_salience Recompute all salience scores
- update_thought Rewrite content (re-embeds, re-extracts metadata)
- delete_thought Permanent delete (cascades connections)
- serendipity_digest Resurface forgotten high-quality thoughts
- pipeline Pipeline monitoring: health status, run history, merge audit
- review_stale Review and act on stale thought candidates
- migration_guide Instructions for importing memories from other platforms
Environment variables
YOUR_BOT_TOKENYOUR_MCP_KEYMCP_ACCESS_KEY
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