kamai-mcp

Kamai's MCP server: tools and MCP Apps widgets for Kamai construction-blueprint projects, blueprints and takeoffs. It runs against Kamai's MCP API and validates access tokens issued by Kamai's OAuth authorization server. It holds no Kamai secrets.

Tools

list_projects, get_project, get_blueprint, request_blueprint_upload and finalize_blueprint_upload are app-only: callable by the widgets, not advertised to the model.

Related MCP server: Estimaite MCP Server

Run locally with your API key

The quickest way to run this server against your own Kamai data is local mode: the host spawns the server, talks to it over stdio, and the credential is a personal API key from Kamai (API Keys in the Kamai app) instead of OAuth.

bun install
bun run build:widgets
KAMAI_API_KEY=... MCP_API_BASE_URL=https://mcp-api.kamai.io bun run local

Claude Code:

claude mcp add --env KAMAI_API_KEY=... --env MCP_API_BASE_URL=https://mcp-api.kamai.io \
  --transport stdio kamai -- bun /path/to/kamai-mcp/src/local.ts

Claude Desktop (claude_desktop_config.json):

{ "mcpServers": { "kamai": {
    "command": "bun", "args": ["/path/to/kamai-mcp/src/local.ts"],
    "env": { "KAMAI_API_KEY": "...", "MCP_API_BASE_URL": "https://mcp-api.kamai.io" } } } }

The key is used as the bearer for every API call; the tools run as the key's owner.

Run the HTTP server

bun install
cp .env.example .env
bun run dev

The values in .env.example are placeholders: set MCP_PUBLIC_URL and MCP_AUTH_ISSUER to your tunnel and to a reachable authorization server before starting, or every request will be refused with invalid_token.

The MCP API and the authorization server are operated by Kamai, so running the HTTP server end to end needs access to both. An MCP server is only really testable against a real host, and a host can only reach a public HTTPS URL, so HTTP-mode development means running behind a tunnel and pointing MCP_PUBLIC_URL at it.

bun run dev builds the widgets first: the server serves the built HTML from dist/widgets/, not the React source, so rebuild after touching anything under src/widgets/app/.

The widgets use React, TypeScript, Vite, Tailwind CSS, DaisyUI and Lucide. Vite produces one self-contained HTML resource per widget, so nothing needs hosting.

Local builds require Bun 1.3.3 and Node.js 22.12 or newer.

Layout

src/index.ts       HTTP server, OAuth protected-resource metadata, MCP transport
src/local.ts       stdio entrypoint for local mode (personal API key)
src/auth.ts        Bearer-token verification (RFC 9728 challenges)
src/server.ts      Tool and resource registration
src/api.ts         Client for the Kamai MCP API
src/elements.ts    list_elements paging, filtering and result budgeting
src/widgets/       Widget resources, CSP metadata and the React widget sources

Contributing

See CONTRIBUTING.md. Security issues go to the address in SECURITY.md, not to the issue tracker.

License

Apache-2.0. Copyright 2026 Kamai Enterprises LTD.

The Kamai name and logo are trademarks of Kamai Enterprises LTD and are not covered by the license.