Overview

The CL-SDK MCP server exposes SDK functions and documentation search as Model Context Protocol tools. This lets AI coding assistants like Claude Code, Cursor, and Windsurf call CL-SDK functions and search these docs without leaving your editor.

What it provides

Documentation search — full-text search across all doc pages, read individual pages, list the doc tree
Prompt builders — generate system prompts, extraction prompts, and application field prompts
Extraction pipeline — classify documents, extract policies and quotes from PDFs
PDF operations — list form fields, fill AcroForms, overlay text on flat PDFs

Quick start

Install the MCP server package:

npm install -g @claritylabs-inc/cl-sdk-mcp

Then add it to your MCP client. See Client setup below.

Published to GitHub Packages. You need a .npmrc pointing @claritylabs-inc to https://npm.pkg.github.com with a valid token.

Architecture

The server is a standalone package (@claritylabs-inc/cl-sdk-mcp) that bundles the documentation content and depends on @claritylabs-inc/cl-sdk for SDK functionality.

┌──────────────────┐          ┌──────────────────────────────────────┐
│                  │  stdio   │  @claritylabs-inc/cl-sdk-mcp         │
│   AI Assistant   │◄────────►│                                      │
│                  │          │  ┌───────────────┐ ┌───────────────┐ │
│  Claude Code     │          │  │ Doc tools     │ │ SDK tools     │ │
│  Cursor          │          │  │               │ │               │ │
│  Windsurf        │          │  │ search_docs   │ │ Prompt        │ │
│  ...             │          │  │ read_doc_page │ │ builders      │ │
│                  │          │  │ list_sections │ │ Extraction    │ │
└──────────────────┘          │  │               │ │ PDF ops       │ │
                              │  └───────┬───────┘ └───────┬───────┘ │
                              │          │                 │         │
                              │          ▼                 ▼         │
                              │  ┌───────────────┐ ┌───────────────┐ │
                              │  │ docs-bundle   │ │ @claritylabs  │ │
                              │  │ .json         │ │ -inc/cl-sdk   │ │
                              │  └───────────────┘ └───────────────┘ │
                              └──────────────────────────────────────┘

Documentation is bundled as docs-bundle.json at publish time — no filesystem access needed
SDK functions are imported from @claritylabs-inc/cl-sdk (installed as a dependency)
Model config is read from mcp-config.json or environment variables
Communicates via StdioServerTransport

Client setup

Claude Code

Add to your project's .claude/mcp.json or global ~/.claude/mcp.json:

{
  "mcpServers": {
    "cl-sdk": {
      "command": "npx",
      "args": ["@claritylabs-inc/cl-sdk-mcp"]
    }
  }
}

If you're working in the cl-sdk-docs repo directly, the .claude/mcp.json in the repo auto-registers it.

Cursor / Windsurf

Add to your MCP settings (usually ~/.cursor/mcp.json or equivalent):

{
  "mcpServers": {
    "cl-sdk": {
      "command": "npx",
      "args": ["@claritylabs-inc/cl-sdk-mcp"]
    }
  }
}

Other MCP clients

Any client that supports stdio servers:

npx @claritylabs-inc/cl-sdk-mcp

Configuration

Set up model providers and API keys.

Tools reference

Full list of all 15 MCP tools.