Module typed 

Available on crate features async and schemars-tools only.

Schemars-driven typed tool registration.

Layers on top of ToolRegistry and the Tool trait: instead of a raw Fn(Value) -> Future handler, you supply a typed Fn(Args) -> Future where Args: JsonSchema + DeserializeOwned. The schema is derived automatically; the registry deserializes the model’s input into Args before invoking, returning ToolError::InvalidInput when the shape doesn’t match.

Gated on the schemars-tools feature.

use claude_api::tool_dispatch::ToolRegistry;
use schemars::JsonSchema;
use serde::Deserialize;
use serde_json::json;

#[derive(JsonSchema, Deserialize)]
struct WeatherArgs {
    city: String,
    #[serde(default)]
    units: Option<String>,
}

let mut registry = ToolRegistry::new();
registry.register_typed::<WeatherArgs, _, _>(
    "get_weather",
    |args| async move {
        Ok(json!({"city": args.city, "units": args.units.unwrap_or_default()}))
    },
);

Structs

TypedTool

Typed-input adapter that implements Tool for a handler taking a JsonSchema-deriving struct.