io.github.yBookoff/thebrain

io.github.yBookoff/thebrainv0.1.2Search

MCP server for TheBrain 15: search by meaning, graph traversal and batch writes over the local API

In-path gate · all MCP tools

Using io.github.yBookoff/thebrain in Claude, Cursor, Gemini CLI, Cline, or Zed?

MCP tool contracts can change remotely with no version bump. The mcpindex gate pins each contract and HOLDs the call when it drifts-before your agent acts. Zero credentials. This is not the package install for this server itself (use Install this server for that).

Install the mcpindex gate (one command)

Rewrites your MCP host config so each server launches behind the gate. Inspect first: curl -fsSL https://mcpindex.ai/install.sh | less

uv tool install mcpindex-gate && mcpindex-config-wire

Auditable install path →Watch it hold a drift →

Trust verdict · v1 advisory · method

NOT YET SCREENEDno verdict on file

Verdict not yet evaluated for this tool. The semantic screen takes adversarial cases first; coverage rolls out as the corpus expands (15/150 labels to graduation). The deterministic conformance probe is built but has not yet run on the public corpus, so a recorded verdict here is REVIEW or UNVERIFIED, never a clearing ALLOW. Until a verdict is recorded, an agent should treat this tool as not-yet-cleared and fall back to its own checks. Method: the eval, four-state verdict, honest limits.

Own this server? Screen its description →

That verdict was true at screening time (snapshot 2026-08-12).

Contracts can change after screening, with no version bump. The gate pins io.github.yBookoff/thebrain’s tool contracts on first sight and holds any silent change before your agent acts - the check that keeps being true on Tuesday.

See your first HOLD in 2 minutes →

Environment variables

THEBRAIN_API_KEY

requiredsecret

Local API key from TheBrain: Settings > User > Local API Key

THEBRAIN_BASE_URL

Address of the local API. Default http://localhost:8001

THEBRAIN_DATA_DIR

Where semantic indexes are stored. Default ~/.thebrain-mcp

THEBRAIN_ALLOW_DESTRUCTIVE

Set to 1 to allow deleting thoughts. Deletion still requires human confirmation. Default 0

THEBRAIN_EMBEDDING_MODEL

Embedding model for semantic search. Default Xenova/multilingual-e5-small

THEBRAIN_EMBEDDING_DTYPE

Weight precision: fp32, fp16, q8 or q4. Default q8

THEBRAIN_TIMEOUT_MS

API request timeout in milliseconds. Default 30000

MCP quality score · maturity, not trust · methodology

freshness

completeness

installability

documentation

stability

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Install this server

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "thebrain": {
      "command": "npx",
      "args": [
        "-y",
        "--",
        "thebrain-mcp-server"
      ],
      "env": {
        "THEBRAIN_API_KEY": "<your-thebrain_api_key>",
        "THEBRAIN_BASE_URL": "<thebrain_base_url>",
        "THEBRAIN_DATA_DIR": "<thebrain_data_dir>",
        "THEBRAIN_ALLOW_DESTRUCTIVE": "<thebrain_allow_destructive>",
        "THEBRAIN_EMBEDDING_MODEL": "<thebrain_embedding_model>",
        "THEBRAIN_EMBEDDING_DTYPE": "<thebrain_embedding_dtype>",
        "THEBRAIN_TIMEOUT_MS": "<thebrain_timeout_ms>"
      }
    }
  }
}

Cursor (.cursor/mcp.json)

{
  "mcpServers": {
    "thebrain": {
      "command": "npx",
      "args": [
        "-y",
        "--",
        "thebrain-mcp-server"
      ],
      "env": {
        "THEBRAIN_API_KEY": "<your-thebrain_api_key>",
        "THEBRAIN_BASE_URL": "<thebrain_base_url>",
        "THEBRAIN_DATA_DIR": "<thebrain_data_dir>",
        "THEBRAIN_ALLOW_DESTRUCTIVE": "<thebrain_allow_destructive>",
        "THEBRAIN_EMBEDDING_MODEL": "<thebrain_embedding_model>",
        "THEBRAIN_EMBEDDING_DTYPE": "<thebrain_embedding_dtype>",
        "THEBRAIN_TIMEOUT_MS": "<thebrain_timeout_ms>"
      }
    }
  }
}

Cline (cline_mcp_settings.json)

npx -y -- thebrain-mcp-server

Claude Code (claude mcp add)

claude mcp add --scope user thebrain -- npx -y -- thebrain-mcp-server

Gemini CLI (gemini mcp add)

gemini mcp add -s user thebrain npx -y -- thebrain-mcp-server

Verdict API

curl -s mcpindex.ai/api/v1/trust/server/io-github-ybookoff-thebrain

Free-tier verdict as JSON: decision + dimensions + severity. Call it from your agent before it invokes a tool it just discovered.

Details

version: v0.1.2
category: Search
quality: 80 / 100
operator: yBookoff

Listing

Listed from the official MCP registry. Unclaimed by its maintainer. Maintainer? Email us →

Provenance

Each verdict is bound to a hash of the exact description it judged, so a re-crawl that changes the text produces a new record rather than silently inheriting this one. Verdict history is hash-chained and anchored to Bitcoin via OpenTimestamps (latest confirmed at block 962,093). Verify it yourself.

Links

Repository →