MCP Perplexity Server

Overview

This repository contains the code for the Model Context Protocol (MCP) Perplexity Server, which is a server that provides an API to ask a question to a model behind the Perplexity API.

Quickstart via Portainer or Docker Compose

Use the following docker-compose.yml to quickly set up the server via Portainer (as a stack) or Docker Compose:

services:
  mcp-sse-server:
    image: ghcr.io/sibbl/mcp-perplexity-api:main
    ports:
      - "8080:8080"
    restart: unless-stopped
    environment:
      - MCP_TRANSPORT=sse
      - MCP_PERPLEXITY_API_KEY=ENTER_YOUR_PERPLEXITY_API_KEY
      # - MCP_SSE_AUTH_HEADER_VALUE=Bearer some_token_which_is_required # enables optional bearer authentication against the MCP server with hard coded value

Save it for Docker compose in a new directory and run docker compose up in it. http://localhost:8080/sse is your endpoint.

Prerequisites

• Nodejs
• pnpm
• Docker

Important: Copy the .env.sample to .env and set your Perplexity API key.

Installation via Docker

To quickly set up the server, run:

docker compose up

Installation via Node.js

To install the required dependencies, run the following command:

pnpm install

To start the server, run:

# with stdio transport
export MCP_TRANSPORT=stdio # optional, stdio is default
pnpm start

# or

# with SSE transport
export MCP_TRANSPORT=sse
pnpm start

Configuration

All configuration options:

• MCP_PERPLEXITY_API_KEY: Perplexity API key to use. Required.
• MCP_TRANSPORT: Either stdio or sse. Default is stdio.
• MCP_PERPLEXITY_DEFAULT_MODEL: The perplexity default model to use. Default is sonar-pro.
• MCP_PERPLEXITY_MODELS: Comma separated list of models to use. Default is sonar,sonar-pro.
• MCP_PERPLEXITY_TOOL_DESCRIPTION_SUFFIX: The suffix to use for the tool description. Empty by default.
• MCP_SSE_ENDPOINT: The endpoint to use for SSE. Default is /sse.
• MCP_SSE_PORT: The port to use for SSE. Default is 8080.
• MCP_SSE_AUTH_HEADER_KEY: The auth header key to use for SSE. Default is Authorization.
• MCP_SSE_AUTH_HEADER_VALUE: The auth header value to use for SSE. By default no value is set, which means that no authorization is required.