GitHub Release

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
Sanboxing with WASM: ability to limit network, filesystem, memory access
Lightweight enough for resource-constrained environments
Support all 3 protocols in the spec: stdio, sse and streamble-http.
Deploy anywhere: serverless, edge, mobile, IoT devices
Cross-platform compatibility out of the box
Support tool name prefix to prevent tool names collision

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
OCI plugin images are signed at publish time and verified at load time with sigstore.

Getting Started

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": {
    "time": {
      "url": "oci://ghcr.io/tuananh/time-plugin:latest"
    },
    "qr_code": {
      "url": "oci://ghcr.io/tuananh/qrcode-plugin:latest"
    },
    "hash": {
      "url": "oci://ghcr.io/tuananh/hash-plugin:latest"
    },
    "myip": {
      "url": "oci://ghcr.io/tuananh/myip-plugin:latest",
      "runtime_config": {
        "allowed_hosts": ["1.1.1.1"]
      }
    },
    "fetch": {
      "url": "oci://ghcr.io/tuananh/fetch-plugin:latest",
      "runtime_config": {
        "allowed_hosts": ["*"],
        "memory_limit": "100 MB",
      }
    }
  }
}

📖 For detailed configuration options including authentication setup, runtime configuration, and advanced features, see RUNTIME_CONFIG.md

Supported URL schemes:

oci:// - for OCI-compliant registries (like Docker Hub, GitHub Container Registry, etc.)
file:// - for local files
http:// or https:// - for remote files
s3:// - for Amazon S3 objects (requires that you have your AWS credentials set up in the environment)

Start the server:

$ hyper-mcp

By default, it will use stdio transport. If you want to use SSE, use flag --transport sse or streamable HTTP with --transport streamable-http.
If you want to debug, use RUST_LOG=info.
If you're loading unsigned OCI plugin, you need to set insecure_skip_signature flag or env var HYPER_MCP_INSECURE_SKIP_SIGNATURE to true

Using with Cursor IDE

You can configure hyper-mcp either globally for all projects or specifically for individual projects.

For project-scope configuration, create .cursor/mcp.json in your project root:

{
  "mcpServers": {
    "hyper-mcp": {
      "command": "/path/to/hyper-mcp"
    }
  }
}

Set up hyper-mcp in Cursor's settings:
Start using tools through chat:

Available Plugins

We maintain several example plugins to get you started:

V1 Plugins

These plugins use the v1 plugin interface. While still supported, new plugins should use the v2 interface.

time: Get current time and do time calculations (Rust)
qr_code: Generate QR codes (Rust)
hash: Generate various types of hashes (Rust)
myip: Get your current IP (Rust)
fetch: Basic webpage fetching (Rust)
crypto_price: Get cryptocurrency prices (Go)
fs: File system operations (Rust)
github: GitHub plugin (Go)
eval_py: Evaluate Python code with RustPython (Rust)
arxiv: Search & download arXiv papers (Rust)
memory: Let you store & retrieve memory, powered by SQLite (Rust)
sqlite: Interact with SQLite (Rust)
crates-io: Get crate general information, check crate latest version (Rust)
gomodule: Get Go modules info, version (Rust)
qdrant: keeping & retrieving memories to Qdrant vector search engine (Rust)
gitlab: GitLab plugin (Rust)
meme_generator: Meme generator (Rust)
context7: Lookup library documentation (Rust)
think: Think tool(Rust)
maven: Maven plugin (Rust)
serper: Serper web search plugin (Rust)

V2 Plugins

These plugins use the v2 plugin interface. New plugins should use this interface.

rstime: Get current time and do time calculations (Rust)

Community-built plugins

hackernews: This plugin connects to the Hacker News API to fetch the current top stories and display them with their titles, scores, authors, and URLs.
release-monitor-id: This plugin retrieves project ID from release-monitoring.org, which helps track versions of released software.
yahoo-finance: This plugin connects to the Yahoo Finance API to provide stock prices (OHLCV) based on a company name or ticker symbol.
rand16: This plugen generates random 16 bytes buffer and provides it in base64uri format - very usable for symmetric cryptography online.

Documentation

Runtime Configuration Guide - Comprehensive guide to configuration options including:
- Authentication setup (Basic, Token, and Keyring)
- Plugin runtime configuration
- Security considerations and best practices
- Platform-specific keyring setup for macOS, Linux, and Windows
- Troubleshooting authentication issues
Skip Tools Pattern Guide - Comprehensive guide to filtering tools using regex patterns:
- Pattern syntax and examples
- Common use cases and best practices
- Environment-specific filtering strategies
- Advanced regex techniques
- Migration and troubleshooting

Hyper