Unitrends Backup MCP Server

A Model Context Protocol server exposing the Unitrends Backup API to Claude and other MCP clients.

What it does

Surface backup posture from your Unitrends appliances (or MSP Console) directly to AI assistants — list appliances and protected assets, monitor running and historical backup jobs, browse recovery points, queue restores and replication, and review open alarms and RPO compliance.

• Interactive Appliance Card (MCP Apps): unitrends_get_appliance renders as an interactive card in MCP Apps hosts (Claude Desktop/web); neutral by default, brandable via window.__BRAND__ injection or MCP_BRAND_* env vars; plain-JSON behavior is unchanged in other hosts

Related MCP server: datto-bcdr-mcp

Tools

Credentials

Copy .env.example. Leave CONDUIT_S2S_SECRET empty in that file.

Local (env mode and stdio)

The stdio transport reads these variables and does not use CONDUIT_S2S_SECRET.

export UNITRENDS_BASE_URL="https://unitrends.example.com"
export UNITRENDS_USERNAME="..."
export UNITRENDS_PASSWORD="..."
export UNITRENDS_VERIFY_TLS="true"   # 'false' for self-signed appliances

HTTP service-to-service auth

CONDUIT_S2S_SECRET is required when MCP_TRANSPORT=http. If it is empty, or a known placeholder (changeme, change-me, placeholder, secret, example, your-s2s-secret, your-secret, replace-me, replace-with-a-real-secret, s2s-secret), the process logs an error and exits non-zero. It never prints the secret. Generate one with openssl rand -hex 32.

MCP_ALLOW_INSECURE_DEV=1 is the only way to start HTTP without that secret. The flag must be exactly 1. The process logs a warning, does not check X-Gateway-S2S, and listens on 127.0.0.1 only. A non-loopback MCP_HTTP_HOST (including 0.0.0.0) is ignored in that mode and the override is logged. A known placeholder still refuses to start; unset the secret to use the bypass.

MCP_HTTP_HOST is honored when a real secret is set, including 0.0.0.0. When MCP_HTTP_HOST is unset and a secret is set, the server binds 0.0.0.0. When there is no secret, the bind address is 127.0.0.1. The container image sets MCP_HTTP_HOST=0.0.0.0.

With a real secret, every /mcp request must include X-Gateway-S2S. The value is t=<unix seconds>,v1=<hex hmac-sha256>. The MAC is HMAC-SHA256 over the ASCII string t=<unix seconds> (the same prefix that appears in the header), keyed with CONDUIT_S2S_SECRET. The timestamp must be within 300 seconds of the server clock. A missing or invalid header is 401 and is rejected before any vendor credential is read.

/health stays unauthenticated, does not read credentials, and is the container health check.

Hosted (gateway mode)

AUTH_MODE=gateway (the Compose default) requires these headers on every /mcp request. A request missing any of the required headers is 401 and does not fall back to UNITRENDS_* in the process environment.

• X-Unitrends-Base-URL (required)

• X-Unitrends-Username (required)

• X-Unitrends-Password (required, secret)

• X-Unitrends-Verify-TLS (optional, default true)

• X-Gateway-S2S (required when CONDUIT_S2S_SECRET is set)

// Gateway injects vendor credentials and the X-Gateway-S2S proof
const response = await fetch("http://gateway:8080/mcp", {
  method: "POST",
  headers: {
    "content-type": "application/json",
    accept: "application/json, text/event-stream",
    "x-gateway-s2s": "<t=unix,v1=hmac-sha256 of t=unix, keyed with CONDUIT_S2S_SECRET>",
    "x-unitrends-base-url": "https://unitrends.example.com",
    "x-unitrends-username": "your_username",
    "x-unitrends-password": "your_password",
  },
  body: JSON.stringify({ jsonrpc: "2.0", id: 1, method: "tools/list" }),
});

Single-tenant HTTP (AUTH_MODE=env, the image default) still requires a valid X-Gateway-S2S header, then reads UNITRENDS_* from the environment when the request does not carry credential headers.

Run

npm install
npm run build
npm start                       # stdio

# HTTP refuses to start until CONDUIT_S2S_SECRET is a real secret
CONDUIT_S2S_SECRET="$CONDUIT_S2S_SECRET" MCP_TRANSPORT=http npm start

# Local HTTP only, without a service-to-service secret (always binds 127.0.0.1)
MCP_TRANSPORT=http MCP_ALLOW_INSECURE_DEV=1 npm start

Docker

The image listens on 0.0.0.0 inside the container and defaults to AUTH_MODE=env. Publish the port on loopback and pass the S2S secret. HTTP will not start when CONDUIT_S2S_SECRET is empty or a known placeholder.

docker build -t unitrends-mcp .
docker run \
  -e CONDUIT_S2S_SECRET="$CONDUIT_S2S_SECRET" \
  -e UNITRENDS_BASE_URL="https://unitrends.example.com" \
  -e UNITRENDS_USERNAME="..." \
  -e UNITRENDS_PASSWORD="..." \
  -p 127.0.0.1:8080:8080 \
  unitrends-mcp

Gateway mode does not read those vendor variables. Credentials arrive on each request, and the request must also carry X-Gateway-S2S signed with CONDUIT_S2S_SECRET:

docker run \
  -e CONDUIT_S2S_SECRET="$CONDUIT_S2S_SECRET" \
  -e AUTH_MODE=gateway \
  -p 127.0.0.1:8080:8080 \
  unitrends-mcp

Compose refuses to start when CONDUIT_S2S_SECRET is unset or empty, sets AUTH_MODE=gateway, does not inject UNITRENDS_BASE_URL, UNITRENDS_USERNAME, or UNITRENDS_PASSWORD, and publishes 127.0.0.1:8080:8080:

CONDUIT_S2S_SECRET="$CONDUIT_S2S_SECRET" docker compose up

License

Apache 2.0 — see LICENSE.