MCP server for TheBrain 15: search by meaning, graph traversal and batch writes over the local API
Thebrain is an MCP integration. MCP server for TheBrain 15: search by meaning, graph traversal and batch writes over the local API.
The published npm package is thebrain-mcp-server, version 0.2.0. Its declared MCP transport is stdio.
The package declares THEBRAIN_API_KEY (required): Local API key from TheBrain: Settings > User > Local API Key; THEBRAIN_BASE_URL: Address of the local API. Default http://localhost:11522, then http://localhost:8001 for older TheBrain builds; 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.
Check the maintainer’s instructions for account access, authentication and the supported client configuration. Once connected, inspect the tools your client receives and try a small task that matches the server’s stated purpose. The registry description does not include a verified, complete tool list.
View the publisher’s registry entry · Project repository. This profile uses version 0.2.0 from the registry. Registration identifies the publisher namespace; it does not establish that this is a first-party integration for every service it connects.
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| Variable | Description | Required |
|---|---|---|
| THEBRAIN_API_KEY | Local API key from TheBrain: Settings > User > Local API Key | Yes |
| THEBRAIN_BASE_URL | Address of the local API. Default http://localhost:11522, then http://localhost:8001 for older TheBrain builds | Check documentation |
| THEBRAIN_DATA_DIR | Where semantic indexes are stored. Default ~/.thebrain-mcp | Check documentation |
| THEBRAIN_ALLOW_DESTRUCTIVE | Set to 1 to allow deleting thoughts. Deletion still requires human confirmation. Default 0 | Check documentation |
| THEBRAIN_EMBEDDING_MODEL | Embedding model for semantic search. Default Xenova/multilingual-e5-small | Check documentation |
| THEBRAIN_EMBEDDING_DTYPE | Weight precision: fp32, fp16, q8 or q4. Default q8 | Check documentation |
| THEBRAIN_TIMEOUT_MS | API request timeout in milliseconds. Default 30000 | Check documentation |
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