Function dispatch

packages/llm/src/tool-runtime.ts:23–35

(tools: Tools, call: ToolCallPart)

/** Execute one canonical tool call without owning provider IO or continuation. */
export const dispatch = (tools: Tools, call: ToolCallPart): Effect.Effect<DispatchResult> => {
  const tool = tools[call.name]
  if (!tool) return Effect.succeed(result(call, { type: "error", value: `Unknown tool: ${call.name}` }))
  if (!tool.execute)
    return Effect.succeed(result(call, { type: "error", value: `Tool has no execute handler: ${call.name}` }))

  return decodeAndExecute(tool, call).pipe(
    Effect.map((value) => result(call, value)),
    Effect.catchTag("LLM.ToolFailure", (failure) =>
      Effect.succeed(result(call, { type: "error", value: failure.message }, failure.error)),
    ),
  )
}

const decodeAndExecute = (tool: AnyTool, call: ToolCallPart): Effect.Effect<ToolSettlement, ToolFailure> =>
  tool._decode(call.input).pipe(