How do I install Spiderbrain?

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 Spiderbrain 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 50 (Fair). The formula is published on the methodology page.

MCPpedia

Spiderbrain MCP Server | MCPpedia

Spiderbrain MCP Server

Name: Spiderbrain MCP Server
Author: aabhisrv

Deterministic context layer for your codebase: change impact, blast radius, answers with receipts.

Tools Versions Alternatives

RegistryRemoteaabhisrv

50Fair

Install

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "aabhisrv-spiderbrain": {
      "command": "npx",
      "args": [
        "-y",
        "spiderbrain@0.2.3"
      ],
      "env": {
        "SPIDERBRAIN_ROOT": "",
        "SPIDERBRAIN_API_KEY": "YOUR_SPIDERBRAIN_API_KEY",
        "SPIDERBRAIN_REGISTRY": ""
      }
    }
  }
}

Install guide

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Environment

Name	Required	Notes
SPIDERBRAIN_ROOT	Yes	Absolute path to the repository to serve, which must already contain a committed .spiderbrain/ folder. Set this: an MCP client's working directory is usually not your repository, and without it the server serves the working directory and reports that no understanding layer was found. Equivalent to passing --root.
SPIDERBRAIN_API_KEY	No	Optional. Enables the cloud why-layer used by the sb_ask tool. The structural tools work offline without it. Secret.
SPIDERBRAIN_REGISTRY	No	Optional. Base URL of the public brain registry this server consults on the first tool call when the repository has no committed .spiderbrain/ folder. Defaults to https://spiderbrain.ai/registry.

Spiderbrain MCP Server

Install

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