Module middleware 

Middleware types for the tool execution pipeline.

Middleware wraps tool execution with cross-cutting concerns like validation, permissions, logging, and output formatting.

The pattern is identical to axum’s from_fn — each middleware receives a Next that it can call to continue the chain, or skip to short-circuit.

Structs

Next

The remaining middleware chain plus the underlying tool.

ToolCall

A tool call in flight through the middleware pipeline.

Traits

ToolMiddleware

Middleware that wraps tool execution.

Functions

tool_middleware_fn

Create middleware from a closure (like axum’s from_fn).