LBrain

Local-first agent memory. Source, date, bind/abstain. Identity: lbrain.ai

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to Cursor Add to VS Code

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Manual Client & Custom JSON ConfigExpand JSON ▾

Client Config & Setup

Choose your client or environment

Target File:~/Library/Application Support/Claude/claude_desktop_config.json

claude_desktop_config.json

{
  "mcpServers": {
    "lbrain": {
      "command": "uvx",
      "args": [
        "lbrain-coding-agents"
      ]
    }
  }
}

💡 Paste the JSON block into your client's configuration file under mcpServers, then restart the application.

Documentation Overview

LBrain coding-agents

Install LBrain where the agent already lives.

The free name is generic. Make it permanent: https://lbrain.ai/claim.html

Native MCP + companion skill + fail-closed session-start for Claude Code, Codex, Cursor, Copilot, Grok Build, Gemini CLI, Antigravity, and OpenClaw.

This package does not modify the LBrain engine. It wires hosts to lbrain mcp. The Official MCP Registry / VS Code @mcp gallery entry also execs that same stdio server.

VS Code: search LBrain in Extensions, or @mcp lbrain. Marketplace: https://marketplace.visualstudio.com/items?itemName=metavolve-labs.lbrain

Install the engine first

Terminal

pip install "lbrain[local]"
lbrain init --source ~/notes
lbrain import && lbrain embed --stale

Wire your coding agents

Terminal

pip install lbrain-coding-agents
python3 -m lbrain_agents status
python3 -m lbrain_agents install            # lists detections, changes nothing
python3 -m lbrain_agents install all        # every detected harness
python3 -m lbrain_agents install claude-code grok-build
python3 -m lbrain_agents install all --dry-run

A bare install is a no-op. That is deliberate: wiring every agent on the machine never happens by accident.

Paste to a desktop AI (no terminal)

Some people never open a shell. They paste this into Claude, Cursor, Codex, Copilot, or Grok and the agent does the work:

Code

Install LBrain as my local memory.

pip install "lbrain[local]" lbrain-coding-agents
If python3 -m lbrain_agents works here, run: python3 -m lbrain_agents install all
Otherwise add an MCP server named lbrain: command lbrain, args ["mcp"], stdio.

Then call whoami. Prefer binds. Near-miss is not an answer. Abstain if nothing binds. SUPERSEDED must not govern. Leave LBRAIN_HOME alone if it is already set.

https://lbrain.ai/integrations.html

Existing lbrain MCP entries are left untouched unless you pass --force. Skills are copied to each host's skills directory. Session-start injects lbrain whoami (Claude Code).

Two-line wrap

server.ts

from openai import OpenAI
from lbrain_agents.wrap import wrap_openai

client = wrap_openai(OpenAI(), home="~/.lbrain")

Recall first. If nothing binds, the model is told to abstain. Writes are opt-in (remember=True).

Agent Plugin

lbrain_agents/share/agent-plugin/ is a portable bundle (plugin.json + mcp.json + skill) for hosts that speak the Agent Plugins spec.

Cookbooks

Abstain when the record does not bind
SUPERSEDED does not govern
Model swap, same mind

See lbrain_agents/share/cookbooks/.

Safety

Merges only the lbrain key. Other MCP servers stay.
Backs up a config once as *.lbrain-backup before the first write.
Does not set LBRAIN_HOME unless you pass --home. A working seat mount is not overwritten.
HTTP MCP is not enabled by this installer. stdio only. The engine's HTTP transport has no auth; do not bind it to the world.

What this package is not

This is the free installer and the serve-boundary skill. It is not LBrain Connect, Managed LBrain, or LBrain Govern. It does not issue gcx:// names, inscribe permanence, or ship study gold sets. The engine's resolver client is open; registrar issuance is not in this tree.

License

BSD-3-Clause. Metavolve Labs, Inc.

Patents pending. The licence covers the code; it does not grant patent rights.

Read the full README →View source on GitHub →

Related MCP Servers

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Frequently Asked Questions about LBrain

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "lbrain": { "command": "npx", "args": ["-y", "LBrain"] } }

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Technical Specs & Signals

CategoryKnowledge & Memory

39Quality signal: Fair · 39/100How this signal is calculated ▾

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Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership10/20

Documentation & tools15/30

Adoption & activity4/15

Community engagement0/10

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Scanned 2h ago via OSV.dev · lbrain-coding-agents (PyPI)

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More in 🧠 Knowledge & Memory →Best MCP servers for Memory & Knowledge →Alternatives to LBrain →Install in Claude Desktop Install in Cursor Install in VS Code

Documentation Overview

LBrain coding-agents

Install LBrain where the agent already lives.

The free name is generic. Make it permanent: https://lbrain.ai/claim.html

Native MCP + companion skill + fail-closed session-start for Claude Code, Codex, Cursor, Copilot, Grok Build, Gemini CLI, Antigravity, and OpenClaw.

This package does not modify the LBrain engine. It wires hosts to lbrain mcp. The Official MCP Registry / VS Code @mcp gallery entry also execs that same stdio server.

VS Code: search LBrain in Extensions, or @mcp lbrain. Marketplace: https://marketplace.visualstudio.com/items?itemName=metavolve-labs.lbrain

Install the engine first

Terminal

pip install "lbrain[local]"
lbrain init --source ~/notes
lbrain import && lbrain embed --stale

Wire your coding agents

Terminal

pip install lbrain-coding-agents
python3 -m lbrain_agents status
python3 -m lbrain_agents install            # lists detections, changes nothing
python3 -m lbrain_agents install all        # every detected harness
python3 -m lbrain_agents install claude-code grok-build
python3 -m lbrain_agents install all --dry-run

A bare install is a no-op. That is deliberate: wiring every agent on the machine never happens by accident.

Paste to a desktop AI (no terminal)

Some people never open a shell. They paste this into Claude, Cursor, Codex, Copilot, or Grok and the agent does the work:

Code

Install LBrain as my local memory.

pip install "lbrain[local]" lbrain-coding-agents
If python3 -m lbrain_agents works here, run: python3 -m lbrain_agents install all
Otherwise add an MCP server named lbrain: command lbrain, args ["mcp"], stdio.

Then call whoami. Prefer binds. Near-miss is not an answer. Abstain if nothing binds. SUPERSEDED must not govern. Leave LBRAIN_HOME alone if it is already set.

https://lbrain.ai/integrations.html

Existing lbrain MCP entries are left untouched unless you pass --force. Skills are copied to each host's skills directory. Session-start injects lbrain whoami (Claude Code).

Two-line wrap

server.ts

from openai import OpenAI
from lbrain_agents.wrap import wrap_openai

client = wrap_openai(OpenAI(), home="~/.lbrain")

Recall first. If nothing binds, the model is told to abstain. Writes are opt-in (remember=True).

Agent Plugin

lbrain_agents/share/agent-plugin/ is a portable bundle (plugin.json + mcp.json + skill) for hosts that speak the Agent Plugins spec.

Cookbooks

Abstain when the record does not bind
SUPERSEDED does not govern
Model swap, same mind

See lbrain_agents/share/cookbooks/.

Safety

Merges only the lbrain key. Other MCP servers stay.
Backs up a config once as *.lbrain-backup before the first write.
Does not set LBRAIN_HOME unless you pass --home. A working seat mount is not overwritten.
HTTP MCP is not enabled by this installer. stdio only. The engine's HTTP transport has no auth; do not bind it to the world.

What this package is not

License

BSD-3-Clause. Metavolve Labs, Inc.

Patents pending. The licence covers the code; it does not grant patent rights.