HTTP Backend Overview
rust-mcp-sdk provides native integrations for two popular Rust HTTP frameworks:
| Backend | Crate | Function |
|---|---|---|
| Axum | rust-mcp-axum | create_axum_server() |
| Actix-web | rust-mcp-actix | create_actix_server() |
Both backends support:
- Streamable HTTP transport
- SSE (backward-compatible)
- Multi-client concurrency
- Built-in DNS rebinding protection
- Session management
- Health check endpoints
- Event stores (resumability)
- Task stores
- OAuth authentication
BYO-Server
Both backends offer a "Bring Your Own Server" mode - mount MCP routes onto your existing app router:
| Backend | Function |
|---|---|
| Axum | mcp_routes(state, &mount_opts, http_handler) |
| Actix | mcp_scope(state, http_handler, &mount_opts) |