hyper-mcp

A fast, secure MCP server that extends its capabilities through WebAssembly plugins.

What is it?

hyper-mcp makes it easy to add AI capabilities to your applications. It works with Claude Desktop, Cursor IDE, and other MCP-compatible apps. Write plugins in your favorite language, distribute them through container registries, and run them anywhere - from cloud to edge.

Features

• Write plugins in any language that compiles to WebAssembly
• Distribute plugins via standard OCI registries (like Docker Hub)
• Built on Extism for rock-solid plugin support
• Lightweight enough for resource-constrained environments
• Deploy anywhere: serverless, edge, mobile, IoT devices
• Cross-platform compatibility out of the box

Security

Built with security-first mindset:

• Sandboxed plugins that can't access your system without permission
• Memory-safe execution with resource limits
• Secure plugin distribution through container registries
• Fine-grained access control for host functions

Getting Started

1. Create your config file:
   • Linux: $HOME/.config/hyper-mcp/config.json
   • Windows: {FOLDERID_RoamingAppData}. Eg: C:\Users\Alice\AppData\Roaming
   • macOS: $HOME/Library/Application Support/hyper-mcp/config.json

{
  "plugins": [
    {
      "name": "time",
      "path": "oci://ghcr.io/tuananh/time-plugin:latest"
    },
    {
      "name": "qr-code",
      "path": "oci://ghcr.io/tuananh/qrcode-plugin:latest"
    },
    {
      "name": "hash",
      "path": "oci://ghcr.io/tuananh/hash-plugin:latest"
    },
    {
      "name": "myip",
      "path": "oci://ghcr.io/tuananh/myip-plugin:latest",
      "runtime_config": {
        "allowed_host": "1.1.1.1"
      }
    },
    {
      "name": "fetch",
      "path": "oci://ghcr.io/tuananh/fetch-plugin:latest",
      "runtime_config": {
        "allowed_host": "*"
      }
    }
  ]
}

2. Start the server:

$ hyper-mcp

Using with Cursor IDE

1. Set up hyper-mcp in Cursor's settings:

2. Start using tools through chat:

Available Plugins

We maintain several example plugins to get you started:

• time: Get current time and do time calculations
• qr-code: Generate QR codes
• hash: Generate various types of hashes
• myip: Get your current IP (example of HTTP requests)
• fetch: Basic webpage fetching
• crypto-price: Get cryptocurrency prices (Go example)
• fs: File system operations

Creating Plugins

Check out our example plugins to learn how to build your own.

To publish a plugin:

# example how to build with rust
FROM rust:1.85-slim AS builder

RUN rustup target add wasm32-wasip1 && \
    rustup component add rust-std --target wasm32-wasip1

WORKDIR /workspace
COPY . .
RUN cargo fetch
RUN cargo build --release --target wasm32-wasip1

# copy wasm to final image
FROM scratch
WORKDIR /
COPY --from=builder /workspace/target/wasm32-wasip1/release/your-plugin.wasm /plugin.wasm

Then build and push:

docker build -t your-registry/plugin-name .
docker push your-registry/plugin-name

License

Apache 2.0