MCP Servers

A Rust workspace containing lightweight MCP (Model Context Protocol) servers built with rmcp. All servers use STDIO transport and are optimized for low memory usage.

Servers

Server	Description
mcp-online-search	Web search and research via any OpenAI-compatible LLM (e.g. Perplexity sonar-pro)
mcp-sequential-thinking	Chain-of-thought reasoning with branching and revision support

Build

# Format all code
cargo fmt --all

# Build all servers
cargo build --release

# Build a specific server
cargo build -p mcp-online-search --release
cargo build -p mcp-sequential-thinking --release

# Install a specific server
cargo install --path mcp-online-search
cargo install --path mcp-sequential-thinking

Binaries are output to target/release/.

Quick Start

Each server runs over STDIO — point your MCP client at the binary:

{
  "mcpServers": {
    "online-search": {
      "command": "/path/to/mcp-online-search",
      "env": {
        "LLM_BASE_URL": "https://api.perplexity.ai",
        "LLM_API_KEY": "your-api-key",
        "LLM_MODEL": "sonar-pro"
      }
    },
    "sequential-thinking": {
      "command": "/path/to/mcp-sequential-thinking"
    }
  }
}

See each server's README for full configuration details.

License

MIT