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DynTool

locode_tools

Trait DynTool 

Source 
pub trait DynTool: Send + Sync {
    // Required methods
    fn kind(&self) -> ToolKind;
    fn description(&self) -> &str;
    fn parameters_schema(&self) -> Value;
    fn call<'life0, 'life1, 'async_trait>(
        &'life0 self,
        ctx: &'life1 ToolCtx,
        raw_args: Value,
    ) -> Pin<Box<dyn Future<Output = Result<ToolRunResult, ToolError>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait;

    // Provided method
    fn input_format(&self) -> ToolInputFormat { ... }
}
Expand description

The object-safe, type-erased tool the registry stores.

Every typed Tool becomes one of these via the internal TypedTool adapter. It is also the seam for dynamically described tools with no compile-time Args type — MCP tools implement DynTool directly (schema fetched from the server, kind = ToolKind::Other) and register via Registry::register_dyn.

Required Methods§

Source

fn kind(&self) -> ToolKind

The cross-pack classification tag.

Source

fn description(&self) -> &str

The description offered to the model.

Source

fn parameters_schema(&self) -> Value

The JSON Schema for this tool’s arguments.

Source

fn call<'life0, 'life1, 'async_trait>( &'life0 self, ctx: &'life1 ToolCtx, raw_args: Value, ) -> Pin<Box<dyn Future<Output = Result<ToolRunResult, ToolError>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Decode raw JSON args, run, and re-serialize into both result faces.

§Errors

ToolError::Respond for bad args or any recoverable failure; ToolError::Fatal when the transcript is unrecoverable.

Provided Methods§

Source

fn input_format(&self) -> ToolInputFormat

How the tool’s input is specified to the model (ADR-0003 amendment 2026-07-19). Defaults to the derived JSON schema; a freeform tool (raw-text args constrained by a grammar, e.g. codex apply_patch) overrides this — and still rides the one dispatch door with Value::String args.

Dyn Compatibility§

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors§