v0.3.1-alpha.4 · World

middleware

A WIT framework for composing Model Context Protocol servers as WebAssembly components.

https://modelcontextprotocol.io/specification/2025-06-18/schema Middleware world for request interception.

Both imports and exports the handler interface, enabling components to intercept requests before forwarding to the next handler.

Exports

I
incoming-handler
Handler interface for incoming MCP requests.

Imports

I
wasi:io/error 0.2.3
I
wasi:io/poll 0.2.3
A poll API intended to let users wait for I/O events on multiple handles at once.
I
wasi:io/streams 0.2.3
WASI I/O is an I/O abstraction API which is currently focused on providing stream types.
I
protocol
I
request
MCP request context
I
incoming-handler
Handler interface for incoming MCP requests.
Theme