Expert Server

MCP server for expert-service knowledge bases. Lets any MCP-compatible agent query beliefs, search documents, and explore reasoning chains.

Install

uv tool install git+https://github.com/benthomasson/expert-mcp-server

Configure

Create a .expert.toml in your project root:

url = "https://expert.ftl2.com"
project = "your-project-name"
api_key = "your-api-key"

Or set environment variables: EXPERT_URL, EXPERT_API_KEY, EXPERT_PROJECT.

Global config can also go in ~/.config/expert/config.toml under [default].

Usage

Claude Code

claude mcp add expert-service -- expert-mcp-server

Claude Desktop / other MCP clients

Add to your MCP config:

{
  "mcpServers": {
    "expert-service": {
      "command": "expert-mcp-server"
    }
  }
}

Or run from source:

{
  "mcpServers": {
    "expert-service": {
      "command": "uvx",
      "args": ["--from", "git+https://github.com/benthomasson/expert-mcp-server", "expert-mcp-server"]
    }
  }
}

Tools

Tool	Description
deep_search	Dual-path retrieval across beliefs and source documents with IDF ranking. Sub-second, no LLM call. Start here.
ask	LLM-synthesized answer grounded in the knowledge base.
search	Full-text search across beliefs, entries, and source documents.
explain_belief	Trace why a belief is IN or OUT through its justification chain.
what_if	Simulate retracting or asserting a belief to see the cascade.
get_belief	Full details for a specific belief including justifications.
list_beliefs	List beliefs filtered by status (IN/OUT).
list_projects	List available expert knowledge bases.
list_entries	List analysis entries (reports, findings).
get_entry	Read the full content of an entry.

All tools accept an optional project parameter. If omitted, the default project from config is used.

License

MIT