{
  "id": "gbrain",
  "name": "GBrain",
  "category": "tools",
  "summary": "Garry Tan's open-source agent brain: shared memory with sources, corrections and a knowledge graph, served to Claude, Codex, OpenClaw, Hermes and others over MCP.",
  "description": "GBrain stores explicit facts with provenance, supports corrections and withdrawal, and makes the same memory available across agents. Start keyless with keyword retrieval, then add semantic search, a cited synthesis layer (answers with an explicit note on what the brain doesn't know), a typed knowledge graph and background enrichment/consolidation jobs. Connects to coding agents and personal agents over MCP; `gbrain mcp expose` publishes a local brain on a Tailscale tailnet (with `--funnel` for cloud agents). Install requires Bun ≥1.4 via `bun install -g github:garrytan/gbrain`; the README warns that the npm package named `gbrain` is unrelated. A hosted team version is offered at gbrain.io. Ships llms.txt, llms-full.txt and AGENTS.md for agents.",
  "url": "https://github.com/garrytan/gbrain",
  "repo": "https://github.com/garrytan/gbrain",
  "tags": [
    "memory",
    "knowledge-graph",
    "mcp",
    "personal-agent",
    "self-hosted",
    "typescript"
  ],
  "license": "MIT",
  "pricing": "open-source",
  "status": "active",
  "agent_access": {
    "llms_txt": "https://raw.githubusercontent.com/garrytan/gbrain/master/llms.txt",
    "auth": "other",
    "notes": "Local brains need no key; remote/hosted brains use OAuth or a private machine connection (see docs/guides/hosted-harness-access.md). Hosted option: https://gbrain.io"
  },
  "related": [
    "memu",
    "mem0",
    "basic-memory",
    "honcho",
    "openclaw",
    "hermes-agent"
  ],
  "sources": [
    "https://github.com/garrytan/gbrain",
    "https://gbrain.io"
  ],
  "added": "2026-10-23",
  "updated": "2026-10-23",
  "last_verified": "2026-10-23",
  "submitted_by": "agentica-curator",
  "maintainer": "Garry Tan",
  "longform": [],
  "links": {
    "html": "https://indexagentica.com/entries/gbrain/",
    "markdown": "https://indexagentica.com/entries/gbrain.md",
    "json": "https://indexagentica.com/api/entries/gbrain.json",
    "source": "https://github.com/Drudley/indexagentica/blob/main/content/tools/gbrain.json"
  }
}