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internal/einomcp/mcp_tools.go

@@ -4,10 +4,13 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+	"strings"
 
 	"cyberstrike-ai/internal/agent"
+	"cyberstrike-ai/internal/security"
 
 	"github.com/cloudwego/eino/components/tool"
+	"github.com/cloudwego/eino/compose"
 	"github.com/cloudwego/eino/schema"
 	"github.com/eino-contrib/jsonschema"
 )
@@ -15,8 +18,18 @@ import (
 // ExecutionRecorder 可选，在 MCP 工具成功返回且带有 execution id 时回调（用于汇总 mcpExecutionIds）。
 type ExecutionRecorder func(executionID string)
 
+// ToolErrorPrefix 用于把内部 MCP 执行结果中的 IsError 标记传递到多代理上层。
+// Eino 工具通道目前只支持返回字符串，因此通过前缀标识，随后在多代理 runner 中解析为 success/isError。
+const ToolErrorPrefix = "__CYBERSTRIKE_AI_TOOL_ERROR__\n"
+
 // ToolsFromDefinitions 将单 Agent 使用的 OpenAI 风格工具定义转为 Eino InvokableTool，执行时走 Agent 的 MCP 路径。
-func ToolsFromDefinitions(ag *agent.Agent, holder *ConversationHolder, defs []agent.Tool, rec ExecutionRecorder) ([]tool.BaseTool, error) {
+func ToolsFromDefinitions(
+	ag *agent.Agent,
+	holder *ConversationHolder,
+	defs []agent.Tool,
+	rec ExecutionRecorder,
+	toolOutputChunk func(toolName, toolCallID, chunk string),
+) ([]tool.BaseTool, error) {
 	out := make([]tool.BaseTool, 0, len(defs))
 	for _, d := range defs {
 		if d.Type != "function" || d.Function.Name == "" {
@@ -32,6 +45,7 @@ func ToolsFromDefinitions(ag *agent.Agent, holder *ConversationHolder, defs []ag
 			agent:  ag,
 			holder: holder,
 			record: rec,
+			chunk:  toolOutputChunk,
 		})
 	}
 	return out, nil
@@ -68,6 +82,7 @@ type mcpBridgeTool struct {
 	agent  *agent.Agent
 	holder *ConversationHolder
 	record ExecutionRecorder
+	chunk  func(toolName, toolCallID, chunk string)
 }
 
 func (m *mcpBridgeTool) Info(ctx context.Context) (*schema.ToolInfo, error) {
@@ -86,6 +101,32 @@ func (m *mcpBridgeTool) InvokableRun(ctx context.Context, argumentsInJSON string
 	if args == nil {
 		args = map[string]interface{}{}
 	}
+
+	// Stream tool output (stdout/stderr) to upper layer via security.Executor's callback.
+	// This enables multi-agent mode to show execution progress on the frontend.
+	if m.chunk != nil {
+		toolCallID := compose.GetToolCallID(ctx)
+		if toolCallID != "" {
+			if existing, ok := ctx.Value(security.ToolOutputCallbackCtxKey).(security.ToolOutputCallback); ok && existing != nil {
+				// Chain existing callback (if any) + our progress forwarder.
+				ctx = context.WithValue(ctx, security.ToolOutputCallbackCtxKey, security.ToolOutputCallback(func(c string) {
+					existing(c)
+					if strings.TrimSpace(c) == "" {
+						return
+					}
+					m.chunk(m.name, toolCallID, c)
+				}))
+			} else {
+				ctx = context.WithValue(ctx, security.ToolOutputCallbackCtxKey, security.ToolOutputCallback(func(c string) {
+					if strings.TrimSpace(c) == "" {
+						return
+					}
+					m.chunk(m.name, toolCallID, c)
+				}))
+			}
+		}
+	}
+
 	conv := m.holder.Get()
 	res, err := m.agent.ExecuteMCPToolForConversation(ctx, conv, m.name, args)
 	if err != nil {
@@ -97,5 +138,8 @@ func (m *mcpBridgeTool) InvokableRun(ctx context.Context, argumentsInJSON string
 	if res.ExecutionID != "" && m.record != nil {
 		m.record(res.ExecutionID)
 	}
+	if res.IsError {
+		return ToolErrorPrefix + res.Result, nil
+	}
 	return res.Result, nil
 }

internal/multiagent/runner.go

@@ -95,7 +95,23 @@ func RunDeepAgent(
 	}
 
 	mainDefs := ag.ToolsForRole(roleTools)
-	mainTools, err := einomcp.ToolsFromDefinitions(ag, holder, mainDefs, recorder)
+	toolOutputChunk := func(toolName, toolCallID, chunk string) {
+		// When toolCallId is missing, frontend ignores tool_result_delta.
+		if progress == nil || toolCallID == "" {
+			return
+		}
+		progress("tool_result_delta", chunk, map[string]interface{}{
+			"toolName":    toolName,
+			"toolCallId":  toolCallID,
+			// index/total/iteration are optional for UI; we don't know them in this bridge.
+			"index":     0,
+			"total":     0,
+			"iteration": 0,
+			"source":    "eino",
+		})
+	}
+
+	mainTools, err := einomcp.ToolsFromDefinitions(ag, holder, mainDefs, recorder, toolOutputChunk)
 	if err != nil {
 		return nil, err
 	}
@@ -183,7 +199,7 @@ func RunDeepAgent(
 		}
 
 		subDefs := ag.ToolsForRole(roleTools)
-		subTools, err := einomcp.ToolsFromDefinitions(ag, holder, subDefs, recorder)
+		subTools, err := einomcp.ToolsFromDefinitions(ag, holder, subDefs, recorder, toolOutputChunk)
 		if err != nil {
 			return nil, fmt.Errorf("子代理 %q 工具: %w", id, err)
 		}
@@ -455,14 +471,24 @@ func RunDeepAgent(
 			if toolName == "" {
 				toolName = mv.ToolName
 			}
-			preview := msg.Content
+
+			// bridge 工具在 res.IsError=true 时会返回带前缀的内容；这里解析为 success/isError，避免前端误判为成功。
+			content := msg.Content
+			isErr := false
+			if strings.HasPrefix(content, einomcp.ToolErrorPrefix) {
+				isErr = true
+				content = strings.TrimPrefix(content, einomcp.ToolErrorPrefix)
+			}
+
+			preview := content
 			if len(preview) > 200 {
 				preview = preview[:200] + "..."
 			}
 			data := map[string]interface{}{
 				"toolName":       toolName,
-				"success":        true,
+				"success":        !isErr,
-				"result":         msg.Content,
+				"isError":        isErr,
+				"result":         content,
 				"resultPreview":  preview,
 				"conversationId": conversationID,
 				"einoAgent":      ev.AgentName,