Method addToolResultForClientTool

packages/ai-client/src/chat-client.ts:1197–1244

(
    result: ClientToolResult,
    clientTool: AnyClientTool | undefined,
    context?: ChatClientRunEventContext,
  )

  }

  private async addToolResultForClientTool(
    result: ClientToolResult,
    clientTool: AnyClientTool | undefined,
    context?: ChatClientRunEventContext,
  ): Promise<void> {
    if (clientTool && result.state !== 'output-error') {
      try {
        result = {
          ...result,
          output: this.validateClientToolOutput(clientTool, result.output),
        }
      } catch (error: any) {
        result = {
          ...result,
          output: null,
          state: 'output-error',
          errorText: error.message,
        }
      }
    }

    this.events.toolResultAdded(
      result.toolCallId,
      result.tool,
      result.output,
      result.state || 'output-available',
      context,
    )

    // Forward an error message only for output-error results (with a fallback so
    // a message-less `throw new Error()` still reaches the terminal 'error'
    // state); a stray errorText on a successful result must not signal an error.
    this.processor.addToolResult(
      result.toolCallId,
      result.output,
      result.state === 'output-error'
        ? result.errorText || 'Tool execution failed'
        : undefined,
    )

    // If stream is in progress, queue continuation check for after it ends
    if (this.isLoading) {
      this.queuePostStreamAction(() => this.checkForContinuation())
      return
    }

    await this.checkForContinuation()
  }

  private validateClientToolOutput(
    clientTool: AnyClientTool,