MCP Construction

CMCP — Construction AI MCP Server

A production MCP server with 50 tools for construction project management. Built for the AEC industry (Architecture, Engineering & Construction). Estimates, RFIs, change orders, daily logs, budgets, schedules, safety, subcontractors, and more — all accessible to AI agents via the Model Context Protocol.

Live at cmcp.us

Categories: construction project-management AEC MCP AI

Features

• 50 construction management tools across 11 categories
• AI-enhanced tools — draft RFI responses, generate weekly reports, safety toolbox talks, subcontractor scorecards
• OAuth 2.1 with PKCE (S256) — standards-compliant authentication
• Multi-tenant — complete org-level data isolation
• Scope-based access control — 28 granular scopes
• Stripe billing — metered usage with overage pricing
• MCP Streamable HTTP — JSON-RPC 2.0 over SSE

Tools

Quick Start

1. Create an Account

curl -X POST https://cmcp.us/signup \
  -H "Content-Type: application/json" \
  -d '{"org_name":"Your Company","email":"[email protected]","password":"securepass"}'

Returns client_id, client_secret, and a 7-day free trial with 2,000 tool calls.

2. Authenticate (OAuth 2.1 + PKCE)

# Generate PKCE challenge
VERIFIER=$(python3 -c "import secrets; print(secrets.token_urlsafe(64))")
CHALLENGE=$(python3 -c "import hashlib,base64; print(base64.urlsafe_b64encode(hashlib.sha256('$VERIFIER'.encode()).digest()).rstrip(b'=').decode())")

# Authorize
curl -X POST https://cmcp.us/oauth/authorize \
  -d "client_id=YOUR_CLIENT_ID&redirect_uri=http://localhost:8080/callback&response_type=code&scope=projects:read+projects:write&code_challenge=$CHALLENGE&code_challenge_method=S256&[email protected]&password=securepass"

# Exchange code for token
curl -X POST https://cmcp.us/oauth/token \
  -d "grant_type=authorization_code&code=AUTH_CODE&redirect_uri=http://localhost:8080/callback&code_verifier=$VERIFIER&client_id=YOUR_CLIENT_ID&client_secret=YOUR_CLIENT_SECRET"

3. Connect via MCP

# Initialize session
curl -X POST https://cmcp.us/mcp \
  -H "Authorization: Bearer ACCESS_TOKEN" \
  -H "Content-Type: application/json" \
  -H "Accept: application/json, text/event-stream" \
  -d '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{"protocolVersion":"2025-03-26","capabilities":{},"clientInfo":{"name":"your-agent","version":"1.0"}}}'

# Call a tool (include mcp-session-id from init response)
curl -X POST https://cmcp.us/mcp \
  -H "Authorization: Bearer ACCESS_TOKEN" \
  -H "Content-Type: application/json" \
  -H "Accept: application/json, text/event-stream" \
  -H "mcp-session-id: SESSION_ID" \
  -d '{"jsonrpc":"2.0","id":2,"method":"tools/call","params":{"name":"create_project","arguments":{"name":"Office Tower","project_type":"commercial","contract_type":"gmp"}}}'

Pricing

Scopes

Request only the scopes your agent needs:

projects:read projects:write estimates:read estimates:write rfis:read rfis:write change_orders:read change_orders:write daily_logs:read daily_logs:write budget:read budget:write schedule:read schedule:write subcontractors:read subcontractors:write documents:read documents:write safety:read safety:write users:read users:write org:read org:write admin

API Endpoints

Full API documentation: docs/API.md

Tech Stack

• Runtime: Node.js + TypeScript
• Framework: Hono
• Protocol: MCP SDK (Streamable HTTP)
• Database: PostgreSQL (Neon) + Drizzle ORM
• Cache: Redis (Upstash)
• Auth: OAuth 2.1 + PKCE, JWT (RS256)
• Billing: Stripe (subscriptions + metered usage)
• Queue: BullMQ (usage reporting)

License

Proprietary. See cmcp.us for terms.