Proofpoint MCP Server

A Model Context Protocol (MCP) server for Proofpoint TAP and Essentials APIs. Enables AI assistants to investigate threats, trace emails, manage quarantine, access threat intelligence, and perform URL defense operations.

This is a Model Context Protocol (MCP) server that connects Claude (or any MCP-compatible AI) to your Proofpoint 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/proofpoint-mcp

Configuration

Copy .env.example and set the variables below. The stdio transport reads PROOFPOINT_* and does not use HTTP service-to-service auth.

Variable	Required	Description
`PROOFPOINT_SERVICE_PRINCIPAL`	For stdio and `AUTH_MODE=env`	Proofpoint TAP service principal
`PROOFPOINT_SERVICE_SECRET`	For stdio and `AUTH_MODE=env`	Proofpoint TAP service secret
`PROOFPOINT_BASE_URL`	No	API host. Defaults to `https://tap-api-v2.proofpoint.com`. Not a credential.
`MCP_TRANSPORT`	No	`stdio` (default) or `http`
`AUTH_MODE`	No	`gateway` (Docker image and Compose) or `env`. Gateway mode requires `X-Proofpoint-Service-Principal` and `X-Proofpoint-Service-Secret` on each `/mcp` request and never falls back to `PROOFPOINT_*`. `env` uses those variables only after S2S auth succeeds. Unset means `env` (stdio and single-tenant HTTP).
`CONDUIT_S2S_SECRET`	Yes for HTTP	Service-to-service secret. The HTTP server logs an error and exits non-zero when this is empty or a known placeholder (`changeme`, `secret`, `replace-me`, `your-s2s-secret`, and the other example values). Generate one with `openssl rand -hex 32`. Compose will not start without it. 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, does not enforce `X-Gateway-S2S`, and binds `127.0.0.1` only. A wider `MCP_HTTP_HOST` (including `0.0.0.0`) is ignored and the override is logged. A known placeholder secret still refuses to start.
`MCP_HTTP_HOST`	No	Bind address when a real `CONDUIT_S2S_SECRET` is set. Unset defaults to `127.0.0.1`. The container image and Compose set `0.0.0.0` inside the container.
`MCP_HTTP_PORT`	No	HTTP port. Defaults to `8080`.

/health and /healthz stay unauthenticated and do not read credentials.

HTTP authentication

With MCP_TRANSPORT=http and CONDUIT_S2S_SECRET set, every /mcp request must include X-Gateway-S2S. The check is verifyS2sHeader in src/s2s-verify.ts: the header value is t=<unix seconds>,v1=<hex>, where the hex is HMAC-SHA256 of the literal string t=<unix seconds> keyed with CONDUIT_S2S_SECRET (64 lowercase hex characters). The timestamp must be within 300 seconds of the server clock. A missing or invalid header is HTTP 401, before vendor credentials are read.

In AUTH_MODE=gateway, /mcp also requires X-Proofpoint-Service-Principal and X-Proofpoint-Service-Secret (X-Proofpoint-Cluster-Url is optional). Those headers are the only credential source for that request. A request missing either required header returns 401 and does not fall back to PROOFPOINT_SERVICE_PRINCIPAL / PROOFPOINT_SERVICE_SECRET.

Usage

Running with Claude Desktop

Add to your Claude Desktop claude_desktop_config.json:

json

{
  "mcpServers": {
    "proofpoint-mcp": {
      "command": "npx",
      "args": ["@wyre-ai/proofpoint-mcp"],
      "env": {
        "PROOFPOINT_SERVICE_PRINCIPAL": "your-proofpoint-service-principal"
        "PROOFPOINT_SERVICE_SECRET": "your-proofpoint-service-secret"
      }
    }
  }
}

Running with Claude Code (CLI)

bash

claude mcp add proofpoint-mcp \
  -e PROOFPOINT_SERVICE_PRINCIPAL=your-value \
  -e PROOFPOINT_SERVICE_SECRET=your-value \
  -- npx -y @wyre-ai/proofpoint-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, Proofpoint credentials arrive on each request as headers; they are not read from the environment.

bash

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

Compose refuses to start when CONDUIT_S2S_SECRET is unset. The gateway service does not set PROOFPOINT_SERVICE_PRINCIPAL or PROOFPOINT_SERVICE_SECRET and does not use env_file, so a project .env cannot inject static vendor credentials. Compose still interpolates CONDUIT_S2S_SECRET from that file. It publishes 127.0.0.1:8080:8080:

bash

CONDUIT_S2S_SECRET="$(openssl rand -hex 32)" docker compose up

Single-tenant HTTP (AUTH_MODE=env) still requires the S2S secret, then uses PROOFPOINT_SERVICE_PRINCIPAL and PROOFPOINT_SERVICE_SECRET. It is separate from the gateway Compose service above.

bash

docker run \
  -e CONDUIT_S2S_SECRET="$CONDUIT_S2S_SECRET" \
  -e AUTH_MODE=env \
  -e PROOFPOINT_SERVICE_PRINCIPAL=your-value \
  -e PROOFPOINT_SERVICE_SECRET=your-value \
  -p 127.0.0.1:8080:8080 \
  proofpoint-mcp

Local HTTP without a secret is development-only. It binds 127.0.0.1 and logs a warning, even if MCP_HTTP_HOST is 0.0.0.0:

bash

MCP_TRANSPORT=http MCP_ALLOW_INSECURE_DEV=1 npm start

Features

Interactive Threat Card (MCP Apps)

proofpoint_threat_get_by_id renders as an interactive, read-only card in MCP Apps hosts (Claude Desktop/web) showing the threat name, status, category, severity, and resolved actor / malware-family / campaign names; plain-JSON behavior is unchanged in other hosts. The card is neutral by default and brandable via window.__BRAND__ injection or MCP_BRAND_* env vars (MCP_BRAND_NAME, MCP_BRAND_LOGO_URL, MCP_BRAND_PRIMARY_COLOR, MCP_BRAND_ACCENT_COLOR, MCP_BRAND_BG, MCP_BRAND_TEXT) — no rebuild needed.

Available Domains

Dlp

Data loss prevention policies

Events

Security event stream and SIEM export

Forensics

Forensic analysis of threats

People

Very Attacked People (VAP) reporting

Policy

Email policy management

Quarantine

Email quarantine management

Reports

Security reports and summaries

Smart Search

Advanced email search

Tap

Targeted Attack Protection events and campaigns

Threat Intel

Threat intelligence and indicators of compromise

Url Defense

URL rewriting and click defense

Development

bash

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

# Install dependencies
npm install

# Build
npm run build

# Run tests
npm test

# HTTP refuses to start until CONDUIT_S2S_SECRET is a real secret
CONDUIT_S2S_SECRET="$(openssl rand -hex 32)" 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