MCP Remote Server — HTTP-Streamable / Resumable (FastMCP)

A production-style remote MCP (Model Context Protocol) server built with FastMCP, exposing tools over a multi-user, HTTP-streamable (resumable) transport and deployed to the cloud via CI/CD. It integrates Gmail, OpenAI, and Salesforce behind a clean service layer, with JWT-based Salesforce auth.

Part of the SunnyLab build series — the step that took a local MCP server to a resumable, multi-user remote server on cloud. Sanitized public showcase: all secrets, keys, and infra identifiers were removed; configure your own .env / CI secrets.

What it demonstrates

• Remote MCP over HTTP-streamable, resumable transport (multi-user, not just local stdio)

• FastMCP server exposing tools/services

• Enterprise integrations — Gmail, OpenAI, Salesforce (JWT bearer flow; keys loaded from env/secret-mounted files at runtime, never committed)

• Cloud-native delivery — Docker, Cloud Build, GitHub Actions (all secrets via ${{ secrets.* }}; project/VM are placeholders)

• Log retention cron + a lightweight dashboard

Related MCP server: gmail-mcp

Architecture

MCP clients (multi-user)
        │  HTTP-streamable / resumable MCP
        ▼
FastMCP remote server
   ├─ tools (gmail / openai / salesforce)
   └─ service layer  ──►  Gmail · OpenAI · Salesforce (JWT)
        │
        ▼
  deployed on cloud VM (Docker), CI/CD via GitHub Actions

See mcp_server/ for tools and services.

Tech stack

Python · MCP / FastMCP · HTTP-streamable resumable transport · Gmail/OpenAI/Salesforce integrations · JWT · Docker · Google Cloud Build · GitHub Actions

Project structure

mcp_server/      # FastMCP server, tools, services, config
generate_token.py# OAuth token helper (no secrets committed)
retention_cron.py# log retention job
dashboard.py     # lightweight dashboard
.github/         # CI/CD (secrets via ${{ secrets.* }}, placeholders for project/VM)
Dockerfile · docker-compose.yml · cloudbuild.yaml
.env.example     # required env vars (no real keys)

Setup

cp .env.example .env      # your own keys; SF JWT key path, OPENAI, Google …
pip install -r requirements.txt
# run the FastMCP server (see mcp_server/)

Note

Public portfolio showcase. Credential files (github-deploy-key.json, SF private key, tokens), .env, and infrastructure identifiers were removed before publishing. The code loads all secrets from environment / mounted files at runtime — none are committed.

SunnyLab — building agentic AI in public · Medium @sunnylabtv · YouTube @sunnylabtv