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MCP server for TheBrain 15: search by meaning, graph traversal and batch writes over the local API
55FairInstall
~/Library/Application Support/Claude/claude_desktop_config.json
{
"mcpServers": {
"ybookoff-thebrain-mcp": {
"command": "npx",
"args": [
"-y",
"thebrain-mcp-server@0.3.0"
],
"env": {
"THEBRAIN_API_KEY": "YOUR_THEBRAIN_API_KEY",
"THEBRAIN_BASE_URL": "",
"THEBRAIN_DATA_DIR": "",
"THEBRAIN_ALLOW_DESTRUCTIVE": "",
"THEBRAIN_EMBEDDING_MODEL": "",
"THEBRAIN_EMBEDDING_DTYPE": "",
"THEBRAIN_TIMEOUT_MS": ""
}
}
}
}
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Environment
| Name | Required | Notes |
|---|
| THEBRAIN_API_KEY | Yes | Local API key from TheBrain: Settings > User > Local API Key Secret. |
| THEBRAIN_BASE_URL | No | Address of the local API. Default http://localhost:11522, then http://localhost:8001 for older TheBrain builds |
| THEBRAIN_DATA_DIR | No | Where semantic indexes are stored. Default ~/.thebrain-mcp |
| THEBRAIN_ALLOW_DESTRUCTIVE | No | Set to 1 to allow deleting thoughts. Deletion still requires human confirmation. Default 0 |
| THEBRAIN_EMBEDDING_MODEL | No | Embedding model for semantic search. Default Xenova/multilingual-e5-small |
| THEBRAIN_EMBEDDING_DTYPE | No | Weight precision: fp32, fp16, q8 or q4. Default q8 |
| THEBRAIN_TIMEOUT_MS | No | API request timeout in milliseconds. Default 30000 |
Tools show up when the registry metadata or the repository README lists them. GitHub enrichment fills this in when a token is configured.
About
MCP server for TheBrain 15: search by meaning, graph traversal and batch writes over the local API
FAQ
- What is thebrain?
- MCP server for TheBrain 15: search by meaning, graph traversal and batch writes over the local API
- How do I install thebrain?
- Pick a client above and copy the generated config. Cursor and VS Code also have a deep link when the server can run locally or remotely.
- Is thebrain official?
- No. Registry-listed is not the same as vendor-official. Read the methodology for the difference.
- How is the trust score calculated?
- This listing scores 55 (Fair). The formula is published on the methodology page.
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