Crewhu MCP Server

A Model Context Protocol (MCP) server for Crewhu — customer feedback, employee engagement, and gamification platform. Enables AI assistants to manage surveys, badges, prizes, and user engagement data.

This is a Model Context Protocol (MCP) server that connects Claude (or any MCP-compatible AI) to your Crewhu environment.

Part of the MSP Claude Plugins ecosystem — a growing suite of AI integrations for the MSP stack. Built by MSPs, for MSPs.

Installation

bash

npm install @wyre-ai/crewhu-mcp

Configuration

Copy .env.example and set the variables below. Leave CONDUIT_S2S_SECRET empty in that file.

Variable	Required	Description
`CREWHU_API_TOKEN`	For stdio and `AUTH_MODE=env`	Crewhu API token. Not read in gateway mode.
`MCP_TRANSPORT`	No	`stdio` (default) or `http`
`AUTH_MODE`	No	`gateway` (Docker image and Compose default) or `env`. Gateway mode requires `X-Crewhu-Api-Token` on each `/mcp` request and never falls back to `CREWHU_API_TOKEN`. `env` uses that variable only after S2S auth succeeds.
`CONDUIT_S2S_SECRET`	Yes for HTTP	Service-to-service HMAC secret. The HTTP server logs an error and exits non-zero when this is empty or a known placeholder (`changeme`, `replace-with-a-real-secret`, and similar). Compose will not start without it. Generate with `openssl rand -hex 32`. Never commit a real value. The value is never logged.
`MCP_ALLOW_INSECURE_DEV`	No	Set to exactly `1` only for local development to start HTTP without `CONDUIT_S2S_SECRET`. The process logs a warning and does not enforce `X-Gateway-S2S`. The listener is forced to `127.0.0.1` even if `MCP_HTTP_HOST` is a wider address. A placeholder secret is still refused.
`MCP_HTTP_HOST`	No	Bind address when `MCP_TRANSPORT=http`. Defaults to `127.0.0.1`. Honored when `CONDUIT_S2S_SECRET` is set. The container image sets `0.0.0.0`.
`MCP_HTTP_PORT`	No	HTTP port. Defaults to `8080`.

/health stays unauthenticated and does not require X-Gateway-S2S. The stdio transport does not use CONDUIT_S2S_SECRET.

HTTP authentication

With MCP_TRANSPORT=http and a real CONDUIT_S2S_SECRET, every /mcp request must include X-Gateway-S2S. A missing or invalid header returns 401 before any vendor credential is read.

The header is an HMAC proof:

text

X-Gateway-S2S: t=<unix seconds>,v1=<hex hmac-sha256>

v1 is the hex-encoded HMAC-SHA256 of the ASCII string t=<unix seconds> (the same t= prefix and value), keyed with CONDUIT_S2S_SECRET. The timestamp must be within 300 seconds of the server clock.

bash

t=$(date +%s)
sig=$(printf 't=%s' "$t" | openssl dgst -sha256 -hmac "$CONDUIT_S2S_SECRET" -hex | awk '{print $NF}')
curl -sS "http://127.0.0.1:8080/mcp" \
  -H "X-Gateway-S2S: t=${t},v1=${sig}" \
  -H "X-Crewhu-Api-Token: $CREWHU_API_TOKEN" \
  -H "Content-Type: application/json" \
  -H "Accept: application/json, text/event-stream" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'

In AUTH_MODE=gateway, /mcp also requires X-Crewhu-Api-Token. A missing or blank header returns 401 and does not fall back to CREWHU_API_TOKEN.

Usage

Running with Claude Desktop

Add to your Claude Desktop claude_desktop_config.json:

json

{
  "mcpServers": {
    "crewhu-mcp": {
      "command": "npx",
      "args": ["@wyre-ai/crewhu-mcp"],
      "env": {
        "CREWHU_API_TOKEN": "your-crewhu-api-token"
      }
    }
  }
}

Running with Claude Code (CLI)

bash

claude mcp add crewhu-mcp \
  -e CREWHU_API_TOKEN=your-value \
  -- npx -y @wyre-ai/crewhu-mcp

Docker

The image listens on 0.0.0.0 inside the container (MCP_HTTP_HOST) and defaults to AUTH_MODE=gateway. Publish the port on loopback and pass a real S2S secret. In gateway mode, the Crewhu token arrives on each request as X-Crewhu-Api-Token; it is not read from the environment. Startup exits if CONDUIT_S2S_SECRET is empty or a known placeholder.

bash

docker build -t crewhu-mcp .
docker run \
  -e CONDUIT_S2S_SECRET="$CONDUIT_S2S_SECRET" \
  -p 127.0.0.1:8080:8080 \
  crewhu-mcp

Compose refuses to start when CONDUIT_S2S_SECRET is unset, defaults AUTH_MODE to gateway, publishes 127.0.0.1:8080:8080, and does not set CREWHU_API_TOKEN:

bash

CONDUIT_S2S_SECRET="$CONDUIT_S2S_SECRET" docker compose up

Single-tenant HTTP (AUTH_MODE=env) still requires the S2S secret, then uses CREWHU_API_TOKEN:

bash

docker run \
  -e CONDUIT_S2S_SECRET="$CONDUIT_S2S_SECRET" \
  -e AUTH_MODE=env \
  -e CREWHU_API_TOKEN=your-value \
  -p 127.0.0.1:8080:8080 \
  crewhu-mcp

Local HTTP without a secret is development-only. It binds 127.0.0.1 only and logs a warning. A non-loopback MCP_HTTP_HOST is ignored:

bash

MCP_TRANSPORT=http MCP_ALLOW_INSECURE_DEV=1 npm start

Available Domains

Badges

Manage and award employee badges

Prizes

Manage prize catalog and redemptions

Surveys

Create and manage customer satisfaction surveys

Users

User management and engagement data

Development

bash

# Clone the repository
git clone https://github.com/WYRE-AI/crewhu-mcp.git
cd crewhu-mcp

# Install dependencies
npm install

# Build
npm run build

# Run tests
npm test