cargo pmcp

Build, Test & Deploy MCP Servers

🦀 + 🤖 = ❤️

Press Space to navigate | S for speaker notes

Today's Journey

1 Myth Busting: MCP Beyond Local Dev

2 DEMO Chess MCP Server

3 Why Rust? Security · Performance · Cost

4 Myth Busting: Resources & Prompts

5 DEMO re:Invent Agenda Helper

6 DEMO Build Your First MCP Server

7 DEMO Deploy to AWS Lambda

8 Security: OAuth is the Standard

9 DEMO Interactive Fiction with OAuth

Myth #1

🤔

"MCP servers are for local development
and software developers only"

BUSTED!

☁️

Cloud-Native

🏢

Enterprise Ready

👨‍⚕️

Any Domain

🔒

OAuth Security

📱

Any Client

🌍

Global Scale

Chess MCP Server DEMO

What Just Happened?

🎮 A game - not a developer tool

☁️ Running on AWS Lambda - not locally

🌐 Accessible via HTTP - any client can connect

🦀 Built with cargo-pmcp in minutes

Why Rust?

🦀

🔒 Security

SQL Injection

Buffer Overflow

Use After Free

Null Pointer

Compile-time guarantees

If it compiles, it's safe

🖥️ Remote MCP: No code downloaded or executed on your machine

⚡ Performance

~2ms cold start

vs 200-500ms for Python/Node.js

💰 Cost

📦

~3MB binary

No runtime needed

🧠

Minimal RAM

128MB is plenty

⏱️

Fast execution

Lower Lambda bills

🤖 Best Compiler for AI

✓ Detailed error messages

✓ Suggests exact fixes

✓ Catches bugs at compile time

✓ Strict type checking

AI + Rust Compiler

= Fewer iterations to working code

💡 The compiler tells the AI exactly what's wrong and how to fix it

Myth #2

🔧

"MCP is just about Tools"

BUSTED!

The MCP Trinity

🔧

Tools

Actions the AI can take

📚

Resources

Data the AI can read

💬

Prompts

Templates for complex tasks

💡 Prompts = Help your AI client use your server correctly!

📖 Learn More: pmcp-book

📡

Protocol

🔔

Notifications

🚫

Cancellations

🔗

Middleware

📱

MCP App

🎓

Advanced

re:Invent Agenda DEMO

📅

Using Prompts to build a full day agenda

The Prompt

Plan my re:Invent day on {topic}

Include:
- Sessions matching my interests
- Travel time between venues
- Lunch and break suggestions
- Networking opportunities

One prompt. Complete day planned. ✨

Let's Build! DEMO

🛠️

Advanced Calculator with Quadratic Equation Solver

Step 1: Create Workspace

$ cargo pmcp new my-mcp-servers

$ cd my-mcp-servers

Workspace created with shared components 📁

Step 2: Add Calculator Server

$ cargo pmcp add server calculator --template complete

Full calculator with tools + prompts! 🧮

Templates: minimal | calculator | complete

What You Get: SequentialWorkflow

SequentialWorkflow::new("solve_quadratic", "Solve ax² + bx + c = 0")
  .argument("a", "Coefficient of x²", true)
  .argument("b", "Coefficient of x", true)
  .argument("c", "Constant term", true)
  // Guide the AI with instructions
  .instruction(InternalPromptMessage::system(
      "Use calculator tools: power, multiply, subtract, sqrt...
       Show your work step by step. Coefficients: a={a}, b={b}, c={c}"
  ))
  // Fetch educational resource
  .step(WorkflowStep::fetch_resources("fetch_guide")
      .with_resource("calculator://help/quadratic-formula")?)

Resources + Instructions = Guided AI

Two Prompts, Same Goal

solve_quadratic

SequentialWorkflow

✅ Fetches resources

✅ Guides AI with instructions

✅ Declarative

quadratic_simple

SimplePrompt

✅ Self-contained

✅ Pre-computed answer

✅ Custom logic

Same user experience. Different implementation. 🎯

Test Locally DEMO

$ cargo pmcp dev

Server running. Claude Code connected. 🔌

Try it!

Solve x² - 5x + 6 = 0

Answer: x = 2 or x = 3 ✓

Deploy to AWS DEMO

$ cargo pmcp deploy --target aws-lambda

☁️

One command. Production ready.

What Just Happened?

✅ Cross-compiled for AWS Lambda

✅ Created CloudFormation stack

✅ Deployed Lambda function

✅ Set up API Gateway

✅ Got public HTTPS endpoint

All in ~30 seconds

Test Remotely DEMO

Same Claude Code. Same experience.

Now running on AWS Lambda 🌍

💡 Your users don't install anything.
They just connect to your endpoint.

What About Security?

🔐

OAuth 2.0 is the Standard

User → MCP Client → OAuth Provider → MCP Server

✅ Industry standard authentication

✅ No passwords in your server

✅ Works with any OAuth provider

✅ Built into cargo-pmcp

Interactive Fiction DEMO

🎮

OAuth-protected text adventures

The Flow

1️⃣ Connect to IF Games server

2️⃣ OAuth redirect → Login

3️⃣ Token received → Authenticated

4️⃣ Play your adventure! 🗡️

What We Learned

🚀 MCP servers are production-ready

🦀 Rust = Security + Performance + Low Cost

💬 Prompts & Resources are powerful, not just tools

☁️ One command from code to cloud

🔐 OAuth built in for enterprise security

Get Started Today

$ cargo install cargo-pmcp

$ cargo pmcp new my-server

$ cargo pmcp dev

github.com/paiml/rust-mcp-sdk

Questions?

🦀 🤖 ❤️

Thank you!