Open Brain MCP Server
Graph-structured MCP memory. 37.2% on LongMemEval baseline - a benchmark most memory systems don't publish. Its 16 documented tools cover thought, review, thoughts. It is available as a remote MCP endpoint.
Teams that want a hosted memory endpoint instead of running a local process. The project is written in TypeScript.
VERIFIED ACTIVE
LAST COMMIT 2026-04-17 · ★ 8 · #252 OF 259 MAINTAINED MEMORY · VERIFIED 2026-08-25
MIT · TypeScript servers · how we verify → /methodology
01 · Install Open Brain
Claude Code
claude mcp add bobby-cell-commits-open-brain-server --transport http https://{supabase_project_ref}.supabase.co/functions/v1/open-brain-mcp/mcpClaude Desktop / Cursor / VS Code - add to config
{
"mcpServers": {
"bobby-cell-commits-open-brain-server": {
"url": "https://{supabase_project_ref}.supabase.co/functions/v1/open-brain-mcp/mcp"
}
}
}Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.
Using another client? Same JSON, different key
Claude Desktop · mcpServers
Cursor · mcpServers
VS Code · servers
Windsurf · mcpServers
Zed · context_servers
Cline · mcpServers
Roo Code · mcpServers
Continue · mcpServers
LibreChat · mcpServers
Gemini CLI · mcpServers
Codex CLI · mcp_servers
Full setup guides: every client.
02 · Evidence
https://{supabase_project_ref}.supabase.co/functions/v1/open-brain-mcp/mcp
transport: streamable-http
endpoint NOT responding · probed 2026-08-25
Security posture
What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.
runs as remote - your agent's requests go to {supabase_project_ref}.supabase.co
license MIT - declared in the repository
registry namespace io.github.Bobby-cell-commits is GitHub-verified and matches the repo owner
03 · What Open Brain can do
Prose above is summarized from the project's README and registry record - no invented capabilities.
What you can build
With this server connected, an agent can browse thoughts filtered by type, topic, person, theme, quality, time, save a new thought from any AI client (with auto-embedding), and browse extracted entities (people, tools, projects, orgs) by frequency.
Capability map
Tools grouped from the project's README - what Open Brain lets an agent do.
Thought
4 tools - e.g. Aggregate statistics: counts, type/theme breakdown, top topics/people; Save a new thought from any AI client (with auto-embedding); Rewrite content (re-embeds, re-extracts metadata)
thought_stats · capture_thought · update_thought · delete_thought
Thoughts
2 tools - e.g. Semantic search with optional graph expansion (1-hop traversal); Browse thoughts filtered by type, topic, person, theme, quality, time
search_thoughts · list_thoughts
read & search
2 tools - e.g. Graph traversal from a thought (typed links: extends, contradicts, etc.); Browse extracted entities (people, tools, projects, orgs) by frequency
get_connections · list_entities
Weekly
1 tool - e.g. AI-generated summary of themes, open loops, and next steps
weekly_review
Analyze
1 tool - e.g. Graph analysis: hubs, density, sources, co-occurrence, themes
analyze
Dedup
1 tool - e.g. Duplicate candidates with similarity zone histogram
dedup_review
Refresh
1 tool - e.g. Recompute all salience scores
refresh_salience
Serendipity
1 tool - e.g. Resurface forgotten high-quality thoughts
serendipity_digest
04 · Who maintains Open Brain
Open Brain is maintained by bobby-cell-commits. It's the only MCP server we track from this author; the repo dates to Apr 2026.
05 · Facts
- category
- memory - ranked #252 of 259 actively-maintained memory servers as of 2026-08-25.
- registry
- io.github.Bobby-cell-commits/open-brain (active, first published 2026-04-07 · 2 versions)
06 · Open Brain FAQ
Is Open Brain still maintained?
Yes - as of 2026-08-25, its last commit was 2026-04-17. We re-verify nightly.
What can Open Brain do?
With this server connected, an agent can browse thoughts filtered by type, topic, person, theme, quality, time, save a new thought from any AI client (with auto-embedding), and browse extracted entities (people, tools, projects, orgs) by frequency.
How do I install Open Brain?
Run `claude mcp add bobby-cell-commits-open-brain- --transport http https://{supabase_project_ref}.supabase.co/functions/v1/open-brain-mcp/mcp`. You can also paste the ready-made client config above.
07 · Alternatives to Open Brain
Alternatives to Open Brain
Maintained memory servers if Open Brain isn't the fit.
- Codebase Memory Codebase knowledge graph for AI agents - 159 languages, sub-ms queries, 99% fewer tokens. ★ 40,198 · 2026-08-23
- Tradememory Protocol MCP memory for AI trading agents. Store trades, recall similar setups, track strategy performance. ★ 1,412 · 2026-08-11
- Superlog Open-source agent that observes and fixes your application. Query logs, traces, metrics, incidents. ★ 1,394 · 2026-08-23
- Persome Local-first personal memory and model server for trusted MCP agents on macOS. ★ 1,314 · 2026-08-21
- Neo4j Memory MCP Neo4j Knowledge Graph Memory Server ★ 979 · 2026-04-10
- Projectmem Local-first memory + judgment layer for AI coding agents - warns before repeating failed fixes. ★ 750 · 2026-08-06
Pairs well with
Servers that cover what Open Brain doesn't - only shown when the pairing reason fits the companion.
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