diff --git a/agent/a2aagent/a2a_agent.go b/agent/a2aagent/a2a_agent.go
index 28e1af70e..df133db00 100644
--- a/agent/a2aagent/a2a_agent.go
+++ b/agent/a2aagent/a2a_agent.go
@@ -12,10 +12,7 @@ package a2aagent
 
 import (
 	"context"
-	"encoding/json"
 	"fmt"
-	"io"
-	"net/http"
 	"strings"
 	"time"
 
@@ -24,20 +21,16 @@ import (
 	"trpc.group/trpc-go/trpc-a2a-go/server"
 	"trpc.group/trpc-go/trpc-agent-go/agent"
 	"trpc.group/trpc-go/trpc-agent-go/event"
+	ia2a "trpc.group/trpc-go/trpc-agent-go/internal/a2a"
+	"trpc.group/trpc-go/trpc-agent-go/log"
 	"trpc.group/trpc-go/trpc-agent-go/model"
 	"trpc.group/trpc-go/trpc-agent-go/tool"
 )
 
-var defaultStreamingChannelSize = 1024
-var defaultNonStreamingChannelSize = 10
-
 const (
-	// AgentCardWellKnownPath is the standard path for agent card discovery
-	AgentCardWellKnownPath = "/.well-known/agent.json"
-	// defaultFetchTimeout is the default timeout for fetching agent card
-	defaultFetchTimeout = 30 * time.Second
-	// defaultUserIDHeader is the default HTTP header name to send UserID to A2A server
-	defaultUserIDHeader = "X-User-ID"
+	defaultStreamingChannelSize    = 1024
+	defaultNonStreamingChannelSize = 10
+	defaultUserIDHeader            = "X-User-ID"
 )
 
 // A2AAgent is an agent that communicates with a remote A2A agent via A2A protocol.
@@ -54,9 +47,9 @@ type A2AAgent struct {
 	streamingRespHandler StreamingRespHandler   // Handler for streaming responses
 	transferStateKey     []string               // Keys in session state to transfer to the A2A agent message by metadata
 	userIDHeader         string                 // HTTP header name to send UserID to A2A server
+	enableStreaming      *bool                  // Explicitly set streaming mode; nil means use agent card capability
 
-	httpClient *http.Client
-	a2aClient  *client.A2AClient
+	a2aClient *client.A2AClient
 }
 
 // New creates a new A2AAgent.
@@ -71,74 +64,60 @@ func New(opts ...Option) (*A2AAgent, error) {
 		opt(agent)
 	}
 
-	if agent.agentURL != "" && agent.agentCard == nil {
-		agentCard, err := agent.resolveAgentCardFromURL()
-		if err != nil {
-			return nil, fmt.Errorf("failed to resolve agent card: %w", err)
-		}
-		agent.agentCard = agentCard
+	var agentURL string
+	if agent.agentCard != nil {
+		agentURL = agent.agentCard.URL
+	} else if agent.agentURL != "" {
+		agentURL = agent.agentURL
+	} else {
+		log.Info("agent card or agent card url not set")
 	}
 
-	if agent.agentCard == nil {
-		return nil, fmt.Errorf("agent card not set")
-	}
+	// Normalize the URL to ensure it has a proper scheme
+	agentURL = ia2a.NormalizeURL(agentURL)
 
-	a2aClient, err := client.NewA2AClient(agent.agentCard.URL, agent.extraA2AOptions...)
+	// Create A2A client first
+	a2aClient, err := client.NewA2AClient(agentURL, agent.extraA2AOptions...)
 	if err != nil {
-		return nil, fmt.Errorf("failed to create A2A client for %s: %w", agent.agentCard.URL, err)
+		return nil, fmt.Errorf("failed to create A2A client for %s: %w", agentURL, err)
 	}
 	agent.a2aClient = a2aClient
-	return agent, nil
-}
-
-// resolveAgentCardFromURL fetches agent card from the well-known path
-func (r *A2AAgent) resolveAgentCardFromURL() (*server.AgentCard, error) {
-	agentURL := r.agentURL
 
-	// Construct the agent card discovery URL
-	agentCardURL := strings.TrimSuffix(agentURL, "/") + AgentCardWellKnownPath
-
-	// Create HTTP client if not set
-	httpClient := r.httpClient
-	if httpClient == nil {
-		httpClient = &http.Client{Timeout: defaultFetchTimeout}
-	}
-
-	// Fetch agent card from well-known path
-	resp, err := httpClient.Get(agentCardURL)
-	if err != nil {
-		return nil, fmt.Errorf("failed to fetch agent card from %s: %w", agentCardURL, err)
-	}
-	defer resp.Body.Close()
+	// If agent card is not set, fetch it using A2A client's GetAgentCard method
+	if agent.agentCard == nil {
+		agentCard, err := a2aClient.GetAgentCard(context.Background(), "")
+		if err != nil {
+			return nil, fmt.Errorf("failed to fetch agent card from %s: %w", agentURL, err)
+		}
 
-	if resp.StatusCode != http.StatusOK {
-		return nil, fmt.Errorf("failed to fetch agent card from %s: HTTP %d", agentCardURL, resp.StatusCode)
-	}
+		// Set name and description from agent card if not already set
+		if agent.name == "" {
+			agent.name = agentCard.Name
+		}
+		if agent.description == "" {
+			agent.description = agentCard.Description
+		}
 
-	// Read response body
-	body, err := io.ReadAll(resp.Body)
-	if err != nil {
-		return nil, fmt.Errorf("failed to read agent card response: %w", err)
-	}
+		if agentCard.URL == "" {
+			agentCard.URL = agentURL
+		} else {
+			// Normalize the agent card URL to ensure it has a proper scheme
+			agentCard.URL = ia2a.NormalizeURL(agentCard.URL)
+		}
 
-	// Parse agent card JSON
-	var agentCard server.AgentCard
-	if err := json.Unmarshal(body, &agentCard); err != nil {
-		return nil, fmt.Errorf("failed to parse agent card JSON: %w", err)
-	}
+		// Rebuild a2a client if URL changed
+		if agentCard.URL != agentURL {
+			a2aClient, err := client.NewA2AClient(agentCard.URL, agent.extraA2AOptions...)
+			if err != nil {
+				return nil, fmt.Errorf("failed to create A2A client for %s: %w", agentCard.URL, err)
+			}
+			agent.a2aClient = a2aClient
+		}
 
-	if r.name == "" {
-		r.name = agentCard.Name
+		agent.agentCard = agentCard
 	}
 
-	if r.description == "" {
-		r.description = agentCard.Description
-	}
-	// If URL is not set in the agent card, use the provided agent URL.
-	if agentCard.URL == "" {
-		agentCard.URL = agentURL
-	}
-	return &agentCard, nil
+	return agent, nil
 }
 
 // sendErrorEvent sends an error event to the event channel
@@ -189,7 +168,12 @@ func (r *A2AAgent) Run(ctx context.Context, invocation *agent.Invocation) (<-cha
 
 // shouldUseStreaming determines whether to use streaming protocol
 func (r *A2AAgent) shouldUseStreaming() bool {
-	// Check if agent card supports streaming
+	// If explicitly set via option, use that value
+	if r.enableStreaming != nil {
+		return *r.enableStreaming
+	}
+
+	// Otherwise check if agent card supports streaming
 	if r.agentCard != nil && r.agentCard.Capabilities.Streaming != nil {
 		return *r.agentCard.Capabilities.Streaming
 	}
diff --git a/agent/a2aagent/a2a_agent_option.go b/agent/a2aagent/a2a_agent_option.go
index 3f3e6943f..5ea4a52d8 100644
--- a/agent/a2aagent/a2a_agent_option.go
+++ b/agent/a2aagent/a2a_agent_option.go
@@ -105,3 +105,12 @@ func WithUserIDHeader(header string) Option {
 		}
 	}
 }
+
+// WithEnableStreaming explicitly controls whether to use streaming protocol.
+// If not set (nil), the agent will use the streaming capability from the agent card.
+// This option overrides the agent card's capability setting.
+func WithEnableStreaming(enable bool) Option {
+	return func(a *A2AAgent) {
+		a.enableStreaming = &enable
+	}
+}
diff --git a/agent/a2aagent/a2a_agent_test.go b/agent/a2aagent/a2a_agent_test.go
index 39932b306..d5503e2cb 100644
--- a/agent/a2aagent/a2a_agent_test.go
+++ b/agent/a2aagent/a2a_agent_test.go
@@ -43,7 +43,7 @@ func TestNew(t *testing.T) {
 			opts: []Option{},
 			setupFunc: func(tc *testCase) *httptest.Server {
 				server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-					if r.URL.Path == AgentCardWellKnownPath {
+					if r.URL.Path == "/.well-known/agent-card.json" {
 						agentCard := server.AgentCard{
 							Name:        "test-agent",
 							Description: "A test agent",
@@ -154,7 +154,7 @@ func TestNew(t *testing.T) {
 			},
 			setupFunc: func(tc *testCase) *httptest.Server {
 				server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-					if r.URL.Path == AgentCardWellKnownPath {
+					if r.URL.Path == "/.well-known/agent-card.json" {
 						agentCard := server.AgentCard{
 							Name:        "test-agent",
 							Description: "Test agent",
@@ -531,142 +531,6 @@ func TestA2AAgent_buildA2AMessage(t *testing.T) {
 	}
 }
 
-func TestA2AAgent_resolveAgentCardFromURL(t *testing.T) {
-	type testCase struct {
-		name         string
-		agent        *A2AAgent
-		setupFunc    func(tc *testCase) *httptest.Server
-		validateFunc func(t *testing.T, agentCard *server.AgentCard, err error)
-	}
-
-	tests := []testCase{
-		{
-			name:  "success with valid agent card",
-			agent: &A2AAgent{},
-			setupFunc: func(tc *testCase) *httptest.Server {
-				server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-					if r.URL.Path == AgentCardWellKnownPath {
-						agentCard := server.AgentCard{
-							Name:        "resolved-agent",
-							Description: "Resolved from URL",
-							URL:         "http://resolved.com",
-						}
-						json.NewEncoder(w).Encode(agentCard)
-						return
-					}
-					w.WriteHeader(http.StatusNotFound)
-				}))
-				tc.agent.agentURL = server.URL
-				return server
-			},
-			validateFunc: func(t *testing.T, agentCard *server.AgentCard, err error) {
-				if err != nil {
-					t.Errorf("expected no error, got %v", err)
-				}
-				if agentCard == nil {
-					t.Fatal("expected agent card, got nil")
-				}
-				if agentCard.Name != "resolved-agent" {
-					t.Errorf("expected name 'resolved-agent', got %s", agentCard.Name)
-				}
-				if agentCard.Description != "Resolved from URL" {
-					t.Errorf("expected description 'Resolved from URL', got %s", agentCard.Description)
-				}
-			},
-		},
-		{
-			name: "fills agent name and description when empty",
-			agent: &A2AAgent{
-				name:        "",
-				description: "",
-			},
-			setupFunc: func(tc *testCase) *httptest.Server {
-				server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-					agentCard := server.AgentCard{
-						Name:        "auto-filled",
-						Description: "Auto-filled description",
-					}
-					json.NewEncoder(w).Encode(agentCard)
-				}))
-				tc.agent.agentURL = server.URL
-				return server
-			},
-			validateFunc: func(t *testing.T, agentCard *server.AgentCard, err error) {
-				if err != nil {
-					t.Errorf("expected no error, got %v", err)
-				}
-				if agentCard.Name != "auto-filled" {
-					t.Errorf("expected name 'auto-filled', got %s", agentCard.Name)
-				}
-			},
-		},
-		{
-			name:  "error when HTTP request fails",
-			agent: &A2AAgent{agentURL: "http://nonexistent.local"},
-			setupFunc: func(tc *testCase) *httptest.Server {
-				return nil
-			},
-			validateFunc: func(t *testing.T, agentCard *server.AgentCard, err error) {
-				if err == nil {
-					t.Error("expected error when HTTP request fails")
-				}
-				if agentCard != nil {
-					t.Error("expected agent card to be nil on error")
-				}
-			},
-		},
-		{
-			name:  "error when HTTP status not OK",
-			agent: &A2AAgent{},
-			setupFunc: func(tc *testCase) *httptest.Server {
-				server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-					w.WriteHeader(http.StatusNotFound)
-				}))
-				tc.agent.agentURL = server.URL
-				return server
-			},
-			validateFunc: func(t *testing.T, agentCard *server.AgentCard, err error) {
-				if err == nil {
-					t.Error("expected error when HTTP status not OK")
-				}
-				if agentCard != nil {
-					t.Error("expected agent card to be nil on error")
-				}
-			},
-		},
-		{
-			name:  "error when invalid JSON",
-			agent: &A2AAgent{},
-			setupFunc: func(tc *testCase) *httptest.Server {
-				server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-					w.Write([]byte("invalid json"))
-				}))
-				tc.agent.agentURL = server.URL
-				return server
-			},
-			validateFunc: func(t *testing.T, agentCard *server.AgentCard, err error) {
-				if err == nil {
-					t.Error("expected error when JSON is invalid")
-				}
-				if agentCard != nil {
-					t.Error("expected agent card to be nil on error")
-				}
-			},
-		},
-	}
-
-	for _, tc := range tests {
-		t.Run(tc.name, func(t *testing.T) {
-			server := tc.setupFunc(&tc)
-			if server != nil {
-				defer server.Close()
-			}
-			agentCard, err := tc.agent.resolveAgentCardFromURL()
-			tc.validateFunc(t, agentCard, err)
-		})
-	}
-}
-
 func TestA2AAgent_Run_ErrorCases(t *testing.T) {
 	type testCase struct {
 		name         string
@@ -880,7 +744,7 @@ func TestA2ARequestOptions(t *testing.T) {
 	t.Run("validates option types and returns error for invalid types", func(t *testing.T) {
 		// Create test server
 		testServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-			if r.URL.Path == AgentCardWellKnownPath {
+			if r.URL.Path == "/.well-known/agent-card.json" {
 				agentCard := server.AgentCard{
 					Name:        "test-agent",
 					Description: "A test agent",
@@ -1023,7 +887,7 @@ func TestUserIDHeaderInRequest(t *testing.T) {
 
 			// Create mock A2A server
 			mockServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-				if r.URL.Path == AgentCardWellKnownPath {
+				if r.URL.Path == "/.well-known/agent-card.json" {
 					// Return agent card with the mock server's URL
 					agentCard := server.AgentCard{
 						Name:        "test-agent",
diff --git a/codeexecutor/container/go.mod b/codeexecutor/container/go.mod
index 58b4b5c45..1ae694ecd 100644
--- a/codeexecutor/container/go.mod
+++ b/codeexecutor/container/go.mod
@@ -48,5 +48,5 @@ require (
 	golang.org/x/sys v0.35.0 // indirect
 	golang.org/x/time v0.12.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
-	trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251020094851-6ab922c9dab1 // indirect
+	trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a // indirect
 )
diff --git a/codeexecutor/container/go.sum b/codeexecutor/container/go.sum
index a199da001..c060b100a 100644
--- a/codeexecutor/container/go.sum
+++ b/codeexecutor/container/go.sum
@@ -134,5 +134,5 @@ gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gotest.tools/v3 v3.5.2 h1:7koQfIKdy+I8UTetycgUqXWSDwpgv193Ka+qRsmBY8Q=
 gotest.tools/v3 v3.5.2/go.mod h1:LtdLGcnqToBH83WByAAi/wiwSFCArdFIUV/xxN4pcjA=
-trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251020094851-6ab922c9dab1 h1:P+OyPh+QCNuO8u+M2UPTYZCGKnH9YAcijC8ULokAdTw=
-trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251020094851-6ab922c9dab1/go.mod h1:Gtytau9Uoc3oPo/dpHvKit+tQn9Qlk5XFG1RiZTGqfk=
+trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a h1:dOon6HF2sPRFnhCLEiAeKPc21JHL2eX7UBWjIR8PLaY=
+trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a/go.mod h1:Gtytau9Uoc3oPo/dpHvKit+tQn9Qlk5XFG1RiZTGqfk=
diff --git a/event/tags_test.go b/event/tags_test.go
index 4db0de847..873fef14d 100644
--- a/event/tags_test.go
+++ b/event/tags_test.go
@@ -13,7 +13,6 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/require"
-	"trpc.group/trpc-go/trpc-agent-go/model"
 )
 
 // TestWithTag_Single verifies that a single tag is applied without a leading delimiter.
@@ -31,16 +30,3 @@ func TestWithTag_Multiple(t *testing.T) {
 
 	require.Equal(t, "alpha"+TagDelimiter+"beta"+TagDelimiter+"gamma", e.Tag)
 }
-
-// TestIsRunnerCompletion verifies the helper correctly identifies runner completion events.
-func TestIsRunnerCompletion(t *testing.T) {
-	// Negative cases
-	require.False(t, (*Event)(nil).IsRunnerCompletion())
-
-	e := &Event{Response: &model.Response{Object: model.ObjectTypeChatCompletion, Done: false}}
-	require.False(t, e.IsRunnerCompletion())
-
-	// Positive case
-	done := &Event{Response: &model.Response{Object: model.ObjectTypeRunnerCompletion, Done: true}}
-	require.True(t, done.IsRunnerCompletion())
-}
diff --git a/examples/agui/go.mod b/examples/agui/go.mod
index 7ca1cf478..703dc9419 100644
--- a/examples/agui/go.mod
+++ b/examples/agui/go.mod
@@ -45,5 +45,5 @@ require (
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20240822170219-fc7c04adadcd // indirect
 	google.golang.org/grpc v1.65.0 // indirect
 	google.golang.org/protobuf v1.34.2 // indirect
-	trpc.group/trpc-go/trpc-a2a-go v0.2.4-0.20250904070130-981d83483333 // indirect
+	trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a // indirect
 )
diff --git a/examples/agui/go.sum b/examples/agui/go.sum
index 4652adde4..6dcb5510a 100644
--- a/examples/agui/go.sum
+++ b/examples/agui/go.sum
@@ -16,6 +16,8 @@ github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/grpc-ecosystem/grpc-gateway/v2 v2.22.0 h1:asbCHRVmodnJTuQ3qamDwqVOIjwqUPTYmYuemVOx+Ys=
 github.com/grpc-ecosystem/grpc-gateway/v2 v2.22.0/go.mod h1:ggCgvZ2r7uOoQjOyu2Y1NhHmEPPzzuhWgcza5M1Ji1I=
+github.com/mattn/go-sqlite3 v1.14.32 h1:JD12Ag3oLy1zQA+BNn74xRgaBbdhbNIDYvQUEuuErjs=
+github.com/mattn/go-sqlite3 v1.14.32/go.mod h1:Uh1q+B4BYcTPb+yiD3kU8Ct7aC0hY9fxUwlHK0RXw+Y=
 github.com/openai/openai-go v1.12.0 h1:NBQCnXzqOTv5wsgNC36PrFEiskGfO5wccfCWDo9S1U0=
 github.com/openai/openai-go v1.12.0/go.mod h1:g461MYGXEXBVdV5SaR/5tNzNbSfwTBBefwc+LlDCK0Y=
 github.com/panjf2000/ants/v2 v2.9.0 h1:SztCLkVxBRigbg+vt0S5QvF5vxAbxbKt09/YfAJ0tEo=
@@ -89,5 +91,5 @@ gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-trpc.group/trpc-go/trpc-a2a-go v0.2.4-0.20250904070130-981d83483333 h1:Als3R0+WZSm+bkDVkt5ATElgRixuGRY7iBSEJXBq2XM=
-trpc.group/trpc-go/trpc-a2a-go v0.2.4-0.20250904070130-981d83483333/go.mod h1:Gtytau9Uoc3oPo/dpHvKit+tQn9Qlk5XFG1RiZTGqfk=
+trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a h1:dOon6HF2sPRFnhCLEiAeKPc21JHL2eX7UBWjIR8PLaY=
+trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a/go.mod h1:Gtytau9Uoc3oPo/dpHvKit+tQn9Qlk5XFG1RiZTGqfk=
diff --git a/examples/go.mod b/examples/go.mod
index 5195707d4..a87b1ab15 100644
--- a/examples/go.mod
+++ b/examples/go.mod
@@ -20,7 +20,7 @@ require (
 	go.opentelemetry.io/otel/metric v1.29.0
 	go.opentelemetry.io/otel/trace v1.29.0
 	go.uber.org/zap v1.27.0
-	trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251020094851-6ab922c9dab1
+	trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a
 	trpc.group/trpc-go/trpc-agent-go v0.2.0
 	trpc.group/trpc-go/trpc-agent-go/memory/redis v0.2.0
 	trpc.group/trpc-go/trpc-agent-go/session/redis v0.2.0
diff --git a/examples/go.sum b/examples/go.sum
index 532f92355..77d0cbd17 100644
--- a/examples/go.sum
+++ b/examples/go.sum
@@ -174,7 +174,7 @@ gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C
 gopkg.in/yaml.v3 v3.0.0/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251020094851-6ab922c9dab1 h1:P+OyPh+QCNuO8u+M2UPTYZCGKnH9YAcijC8ULokAdTw=
-trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251020094851-6ab922c9dab1/go.mod h1:Gtytau9Uoc3oPo/dpHvKit+tQn9Qlk5XFG1RiZTGqfk=
+trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a h1:dOon6HF2sPRFnhCLEiAeKPc21JHL2eX7UBWjIR8PLaY=
+trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a/go.mod h1:Gtytau9Uoc3oPo/dpHvKit+tQn9Qlk5XFG1RiZTGqfk=
 trpc.group/trpc-go/trpc-mcp-go v0.0.5 h1:sokuTLv73DYVrsylmCVrUCigLg2WVPvSxz4BUpzESRU=
 trpc.group/trpc-go/trpc-mcp-go v0.0.5/go.mod h1:q9nAeg9aALr8S38fAPSd+wQVkFpmPW/1r2JGtZAM2ts=
diff --git a/examples/knowledge/go.mod b/examples/knowledge/go.mod
index 5f8330b12..978bcab39 100644
--- a/examples/knowledge/go.mod
+++ b/examples/knowledge/go.mod
@@ -85,7 +85,7 @@ require (
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20250707201910-8d1bb00bc6a7 // indirect
 	google.golang.org/grpc v1.73.0 // indirect
 	google.golang.org/protobuf v1.36.6 // indirect
-	trpc.group/trpc-go/trpc-a2a-go v0.2.4-0.20250904070130-981d83483333 // indirect
+	trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a // indirect
 	trpc.group/trpc-go/trpc-agent-go/storage/elasticsearch v0.2.0 // indirect
 	trpc.group/trpc-go/trpc-agent-go/storage/tcvector v0.0.4 // indirect
 )
diff --git a/examples/knowledge/go.sum b/examples/knowledge/go.sum
index c9233b5fa..59f0a6e13 100644
--- a/examples/knowledge/go.sum
+++ b/examples/knowledge/go.sum
@@ -109,6 +109,8 @@ github.com/ledongthuc/pdf v0.0.0-20250511090121-5959a4027728 h1:QwWKgMY28TAXaDl+
 github.com/ledongthuc/pdf v0.0.0-20250511090121-5959a4027728/go.mod h1:1fEHWurg7pvf5SG6XNE5Q8UZmOwex51Mkx3SLhrW5B4=
 github.com/lib/pq v1.10.9 h1:YXG7RB+JIjhP29X+OtkiDnYaXQwpS4JEWq7dtCCRUEw=
 github.com/lib/pq v1.10.9/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
+github.com/mattn/go-sqlite3 v1.14.32 h1:JD12Ag3oLy1zQA+BNn74xRgaBbdhbNIDYvQUEuuErjs=
+github.com/mattn/go-sqlite3 v1.14.32/go.mod h1:Uh1q+B4BYcTPb+yiD3kU8Ct7aC0hY9fxUwlHK0RXw+Y=
 github.com/mitchellh/mapstructure v1.4.3/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
 github.com/mitchellh/mapstructure v1.5.0 h1:jeMsZIYE/09sWLaz43PL7Gy6RuMjD2eJVyuac5Z2hdY=
 github.com/mitchellh/mapstructure v1.5.0/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
@@ -289,8 +291,8 @@ honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWh
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 mellium.im/sasl v0.3.1 h1:wE0LW6g7U83vhvxjC1IY8DnXM+EU095yeo8XClvCdfo=
 mellium.im/sasl v0.3.1/go.mod h1:xm59PUYpZHhgQ9ZqoJ5QaCqzWMi8IeS49dhp6plPCzw=
-trpc.group/trpc-go/trpc-a2a-go v0.2.4-0.20250904070130-981d83483333 h1:Als3R0+WZSm+bkDVkt5ATElgRixuGRY7iBSEJXBq2XM=
-trpc.group/trpc-go/trpc-a2a-go v0.2.4-0.20250904070130-981d83483333/go.mod h1:Gtytau9Uoc3oPo/dpHvKit+tQn9Qlk5XFG1RiZTGqfk=
+trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a h1:dOon6HF2sPRFnhCLEiAeKPc21JHL2eX7UBWjIR8PLaY=
+trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a/go.mod h1:Gtytau9Uoc3oPo/dpHvKit+tQn9Qlk5XFG1RiZTGqfk=
 trpc.group/trpc-go/trpc-agent-go/storage/elasticsearch v0.2.0 h1:TJkM9rYp3GFcyvGWY1lW+g+ABuWzHlvpBbXd0U6iKK0=
 trpc.group/trpc-go/trpc-agent-go/storage/elasticsearch v0.2.0/go.mod h1:efPOimKMIx1BmLZ9qkpwoZyiSQ62yM/6eMzWocLD7Y0=
 trpc.group/trpc-go/trpc-agent-go/storage/tcvector v0.0.4 h1:yV87tUOnsmUS7zFy9rEgzdxUfSgcUr6QO5ICyIIoPDY=
diff --git a/examples/tailor/go.mod b/examples/tailor/go.mod
index 245e602ad..7cc9136fd 100644
--- a/examples/tailor/go.mod
+++ b/examples/tailor/go.mod
@@ -22,5 +22,5 @@ require (
 	github.com/tiktoken-go/tokenizer v0.7.0 // indirect
 	go.uber.org/multierr v1.10.0 // indirect
 	go.uber.org/zap v1.27.0 // indirect
-	trpc.group/trpc-go/trpc-a2a-go v0.2.4-0.20250904070130-981d83483333 // indirect
+	trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a // indirect
 )
diff --git a/examples/tailor/go.sum b/examples/tailor/go.sum
index 8e0bc064a..c332ea4aa 100644
--- a/examples/tailor/go.sum
+++ b/examples/tailor/go.sum
@@ -28,5 +28,5 @@ go.uber.org/zap v1.27.0 h1:aJMhYGrd5QSmlpLMr2MftRKl7t8J8PTZPA732ud/XR8=
 go.uber.org/zap v1.27.0/go.mod h1:GB2qFLM7cTU87MWRP2mPIjqfIDnGu+VIO4V/SdhGo2E=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-trpc.group/trpc-go/trpc-a2a-go v0.2.4-0.20250904070130-981d83483333 h1:Als3R0+WZSm+bkDVkt5ATElgRixuGRY7iBSEJXBq2XM=
-trpc.group/trpc-go/trpc-a2a-go v0.2.4-0.20250904070130-981d83483333/go.mod h1:Gtytau9Uoc3oPo/dpHvKit+tQn9Qlk5XFG1RiZTGqfk=
+trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a h1:dOon6HF2sPRFnhCLEiAeKPc21JHL2eX7UBWjIR8PLaY=
+trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a/go.mod h1:Gtytau9Uoc3oPo/dpHvKit+tQn9Qlk5XFG1RiZTGqfk=
diff --git a/go.mod b/go.mod
index f5bb4c5d8..28787888f 100644
--- a/go.mod
+++ b/go.mod
@@ -12,7 +12,7 @@ require (
 	github.com/hashicorp/go-multierror v1.1.1
 	github.com/mattn/go-sqlite3 v1.14.32
 	github.com/openai/openai-go v1.12.0
-	github.com/panjf2000/ants/v2 v2.10.0
+	github.com/panjf2000/ants/v2 v2.9.0
 	github.com/rs/cors v1.11.1
 	github.com/spaolacci/murmur3 v1.1.0
 	github.com/stretchr/testify v1.10.0
@@ -34,7 +34,7 @@ require (
 	golang.org/x/text v0.21.0
 	google.golang.org/grpc v1.65.0
 	google.golang.org/protobuf v1.34.2
-	trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251020094851-6ab922c9dab1
+	trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a
 	trpc.group/trpc-go/trpc-mcp-go v0.0.5
 )
 
diff --git a/go.sum b/go.sum
index ded38b6e7..b80888939 100644
--- a/go.sum
+++ b/go.sum
@@ -82,8 +82,8 @@ github.com/mozillazg/go-httpheader v0.2.1 h1:geV7TrjbL8KXSyvghnFm+NyTux/hxwueTSr
 github.com/mozillazg/go-httpheader v0.2.1/go.mod h1:jJ8xECTlalr6ValeXYdOF8fFUISeBAdw6E61aqQma60=
 github.com/openai/openai-go v1.12.0 h1:NBQCnXzqOTv5wsgNC36PrFEiskGfO5wccfCWDo9S1U0=
 github.com/openai/openai-go v1.12.0/go.mod h1:g461MYGXEXBVdV5SaR/5tNzNbSfwTBBefwc+LlDCK0Y=
-github.com/panjf2000/ants/v2 v2.10.0 h1:zhRg1pQUtkyRiOFo2Sbqwjp0GfBNo9cUY2/Grpx1p+8=
-github.com/panjf2000/ants/v2 v2.10.0/go.mod h1:7ZxyxsqE4vvW0M7LSD8aI3cKwgFhBHbxnlN8mDqHa1I=
+github.com/panjf2000/ants/v2 v2.9.0 h1:SztCLkVxBRigbg+vt0S5QvF5vxAbxbKt09/YfAJ0tEo=
+github.com/panjf2000/ants/v2 v2.9.0/go.mod h1:7ZxyxsqE4vvW0M7LSD8aI3cKwgFhBHbxnlN8mDqHa1I=
 github.com/perimeterx/marshmallow v1.1.5 h1:a2LALqQ1BlHM8PZblsDdidgv1mWi1DgC2UmX50IvK2s=
 github.com/perimeterx/marshmallow v1.1.5/go.mod h1:dsXbUu8CRzfYP5a87xpp0xq9S3u0Vchtcl8we9tYaXw=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
@@ -187,7 +187,7 @@ gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C
 gopkg.in/yaml.v3 v3.0.0/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251020094851-6ab922c9dab1 h1:P+OyPh+QCNuO8u+M2UPTYZCGKnH9YAcijC8ULokAdTw=
-trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251020094851-6ab922c9dab1/go.mod h1:Gtytau9Uoc3oPo/dpHvKit+tQn9Qlk5XFG1RiZTGqfk=
+trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a h1:dOon6HF2sPRFnhCLEiAeKPc21JHL2eX7UBWjIR8PLaY=
+trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a/go.mod h1:Gtytau9Uoc3oPo/dpHvKit+tQn9Qlk5XFG1RiZTGqfk=
 trpc.group/trpc-go/trpc-mcp-go v0.0.5 h1:sokuTLv73DYVrsylmCVrUCigLg2WVPvSxz4BUpzESRU=
 trpc.group/trpc-go/trpc-mcp-go v0.0.5/go.mod h1:q9nAeg9aALr8S38fAPSd+wQVkFpmPW/1r2JGtZAM2ts=
diff --git a/internal/a2a/url.go b/internal/a2a/url.go
new file mode 100644
index 000000000..c1cb99c87
--- /dev/null
+++ b/internal/a2a/url.go
@@ -0,0 +1,37 @@
+//
+// Tencent is pleased to support the open source community by making trpc-agent-go available.
+//
+// Copyright (C) 2025 Tencent.  All rights reserved.
+//
+// trpc-agent-go is licensed under the Apache License Version 2.0.
+//
+//
+
+// Package a2a provides internal utilities for A2A (Agent-to-Agent) protocol.
+package a2a
+
+import "net/url"
+
+// NormalizeURL ensures the URL has a scheme.
+// If the input already has a scheme (e.g., http://, https://, custom://), it returns it as-is.
+// Otherwise, it prepends "http://"
+//
+// This function is used by both A2A client and server to provide a uniform user experience.
+//
+// Examples:
+//   - "localhost:8080" → "http://localhost:8080"
+//   - "http://example.com" → "http://example.com" (no change)
+//   - "grpc://service:9090" → "grpc://service:9090" (no change)
+func NormalizeURL(urlOrHost string) string {
+	if urlOrHost == "" {
+		return ""
+	}
+	// Parse the URL to check if it has a valid scheme
+	u, err := url.Parse(urlOrHost)
+	if err == nil && u.Scheme != "" && u.Host != "" {
+		// Has both scheme and host (e.g., http://example.com, custom://service)
+		return urlOrHost
+	}
+	// No valid scheme, add http:// prefix
+	return "http://" + urlOrHost
+}
diff --git a/internal/a2a/url_test.go b/internal/a2a/url_test.go
new file mode 100644
index 000000000..de0252b9a
--- /dev/null
+++ b/internal/a2a/url_test.go
@@ -0,0 +1,80 @@
+//
+// Tencent is pleased to support the open source community by making trpc-agent-go available.
+//
+// Copyright (C) 2025 Tencent.  All rights reserved.
+//
+// trpc-agent-go is licensed under the Apache License Version 2.0.
+//
+//
+
+package a2a
+
+import "testing"
+
+func TestNormalizeURL(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    string
+		expected string
+	}{
+		{
+			name:     "empty string",
+			input:    "",
+			expected: "",
+		},
+		{
+			name:     "http URL - no change",
+			input:    "http://example.com",
+			expected: "http://example.com",
+		},
+		{
+			name:     "https URL - no change",
+			input:    "https://example.com",
+			expected: "https://example.com",
+		},
+		{
+			name:     "custom scheme - no change",
+			input:    "grpc://service:9090",
+			expected: "grpc://service:9090",
+		},
+		{
+			name:     "host only - add http",
+			input:    "localhost:8080",
+			expected: "http://localhost:8080",
+		},
+		{
+			name:     "domain only - add http",
+			input:    "example.com",
+			expected: "http://example.com",
+		},
+		{
+			name:     "IP with port - add http",
+			input:    "192.168.1.1:8080",
+			expected: "http://192.168.1.1:8080",
+		},
+		{
+			name:     "http URL with path",
+			input:    "http://example.com/api/v1",
+			expected: "http://example.com/api/v1",
+		},
+		{
+			name:     "host with path - add http",
+			input:    "localhost:8080/api",
+			expected: "http://localhost:8080/api",
+		},
+		{
+			name:     "custom scheme with path",
+			input:    "custom://service.namespace/path",
+			expected: "custom://service.namespace/path",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := NormalizeURL(tt.input)
+			if result != tt.expected {
+				t.Errorf("NormalizeURL(%q) = %q, want %q", tt.input, result, tt.expected)
+			}
+		})
+	}
+}
diff --git a/knowledge/document/reader/pdf/go.mod b/knowledge/document/reader/pdf/go.mod
index 626fd6ad5..f5802afed 100644
--- a/knowledge/document/reader/pdf/go.mod
+++ b/knowledge/document/reader/pdf/go.mod
@@ -15,5 +15,5 @@ require (
 	go.uber.org/multierr v1.10.0 // indirect
 	go.uber.org/zap v1.27.0 // indirect
 	golang.org/x/text v0.21.0 // indirect
-	trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251020094851-6ab922c9dab1 // indirect
+	trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a // indirect
 )
diff --git a/knowledge/document/reader/pdf/go.sum b/knowledge/document/reader/pdf/go.sum
index 881666181..cb268c50e 100644
--- a/knowledge/document/reader/pdf/go.sum
+++ b/knowledge/document/reader/pdf/go.sum
@@ -20,5 +20,5 @@ golang.org/x/text v0.21.0 h1:zyQAAkrwaneQ066sspRyJaG9VNi/YJ1NfzcGB3hZ/qo=
 golang.org/x/text v0.21.0/go.mod h1:4IBbMaMmOPCJ8SecivzSH54+73PCFmPWxNTLm+vZkEQ=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251020094851-6ab922c9dab1 h1:P+OyPh+QCNuO8u+M2UPTYZCGKnH9YAcijC8ULokAdTw=
-trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251020094851-6ab922c9dab1/go.mod h1:Gtytau9Uoc3oPo/dpHvKit+tQn9Qlk5XFG1RiZTGqfk=
+trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a h1:dOon6HF2sPRFnhCLEiAeKPc21JHL2eX7UBWjIR8PLaY=
+trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a/go.mod h1:Gtytau9Uoc3oPo/dpHvKit+tQn9Qlk5XFG1RiZTGqfk=
diff --git a/knowledge/embedder/gemini/go.mod b/knowledge/embedder/gemini/go.mod
index ad81023a7..690d6796c 100644
--- a/knowledge/embedder/gemini/go.mod
+++ b/knowledge/embedder/gemini/go.mod
@@ -42,5 +42,5 @@ require (
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20240903143218-8af14fe29dc1 // indirect
 	google.golang.org/grpc v1.66.2 // indirect
 	google.golang.org/protobuf v1.34.2 // indirect
-	trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251020094851-6ab922c9dab1 // indirect
+	trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a // indirect
 )
diff --git a/knowledge/embedder/gemini/go.sum b/knowledge/embedder/gemini/go.sum
index e88ccbb99..681b1d014 100644
--- a/knowledge/embedder/gemini/go.sum
+++ b/knowledge/embedder/gemini/go.sum
@@ -164,5 +164,5 @@ gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
-trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251020094851-6ab922c9dab1 h1:P+OyPh+QCNuO8u+M2UPTYZCGKnH9YAcijC8ULokAdTw=
-trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251020094851-6ab922c9dab1/go.mod h1:Gtytau9Uoc3oPo/dpHvKit+tQn9Qlk5XFG1RiZTGqfk=
+trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a h1:dOon6HF2sPRFnhCLEiAeKPc21JHL2eX7UBWjIR8PLaY=
+trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a/go.mod h1:Gtytau9Uoc3oPo/dpHvKit+tQn9Qlk5XFG1RiZTGqfk=
diff --git a/knowledge/vectorstore/elasticsearch/go.mod b/knowledge/vectorstore/elasticsearch/go.mod
index 40af683d0..3017d50d8 100644
--- a/knowledge/vectorstore/elasticsearch/go.mod
+++ b/knowledge/vectorstore/elasticsearch/go.mod
@@ -29,5 +29,5 @@ require (
 	go.uber.org/multierr v1.10.0 // indirect
 	go.uber.org/zap v1.27.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
-	trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251020094851-6ab922c9dab1 // indirect
+	trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a // indirect
 )
diff --git a/knowledge/vectorstore/elasticsearch/go.sum b/knowledge/vectorstore/elasticsearch/go.sum
index 72eed3dc0..a57b72820 100644
--- a/knowledge/vectorstore/elasticsearch/go.sum
+++ b/knowledge/vectorstore/elasticsearch/go.sum
@@ -50,5 +50,5 @@ gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntN
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251020094851-6ab922c9dab1 h1:P+OyPh+QCNuO8u+M2UPTYZCGKnH9YAcijC8ULokAdTw=
-trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251020094851-6ab922c9dab1/go.mod h1:Gtytau9Uoc3oPo/dpHvKit+tQn9Qlk5XFG1RiZTGqfk=
+trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a h1:dOon6HF2sPRFnhCLEiAeKPc21JHL2eX7UBWjIR8PLaY=
+trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a/go.mod h1:Gtytau9Uoc3oPo/dpHvKit+tQn9Qlk5XFG1RiZTGqfk=
diff --git a/knowledge/vectorstore/pgvector/go.mod b/knowledge/vectorstore/pgvector/go.mod
index 822de4797..90e4ce0b4 100644
--- a/knowledge/vectorstore/pgvector/go.mod
+++ b/knowledge/vectorstore/pgvector/go.mod
@@ -23,5 +23,5 @@ require (
 	golang.org/x/sync v0.12.0 // indirect
 	golang.org/x/text v0.23.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
-	trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251020094851-6ab922c9dab1 // indirect
+	trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a // indirect
 )
diff --git a/knowledge/vectorstore/pgvector/go.sum b/knowledge/vectorstore/pgvector/go.sum
index fb67d751f..5d4a4ba62 100644
--- a/knowledge/vectorstore/pgvector/go.sum
+++ b/knowledge/vectorstore/pgvector/go.sum
@@ -84,5 +84,5 @@ gorm.io/gorm v1.25.5 h1:zR9lOiiYf09VNh5Q1gphfyia1JpiClIWG9hQaxB/mls=
 gorm.io/gorm v1.25.5/go.mod h1:hbnx/Oo0ChWMn1BIhpy1oYozzpM15i4YPuHDmfYtwg8=
 mellium.im/sasl v0.3.1 h1:wE0LW6g7U83vhvxjC1IY8DnXM+EU095yeo8XClvCdfo=
 mellium.im/sasl v0.3.1/go.mod h1:xm59PUYpZHhgQ9ZqoJ5QaCqzWMi8IeS49dhp6plPCzw=
-trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251020094851-6ab922c9dab1 h1:P+OyPh+QCNuO8u+M2UPTYZCGKnH9YAcijC8ULokAdTw=
-trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251020094851-6ab922c9dab1/go.mod h1:Gtytau9Uoc3oPo/dpHvKit+tQn9Qlk5XFG1RiZTGqfk=
+trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a h1:dOon6HF2sPRFnhCLEiAeKPc21JHL2eX7UBWjIR8PLaY=
+trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a/go.mod h1:Gtytau9Uoc3oPo/dpHvKit+tQn9Qlk5XFG1RiZTGqfk=
diff --git a/knowledge/vectorstore/tcvector/go.mod b/knowledge/vectorstore/tcvector/go.mod
index c7b15862c..65b77c35c 100644
--- a/knowledge/vectorstore/tcvector/go.mod
+++ b/knowledge/vectorstore/tcvector/go.mod
@@ -35,5 +35,5 @@ require (
 	google.golang.org/grpc v1.65.0 // indirect
 	google.golang.org/protobuf v1.34.2 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
-	trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251020094851-6ab922c9dab1 // indirect
+	trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a // indirect
 )
diff --git a/knowledge/vectorstore/tcvector/go.sum b/knowledge/vectorstore/tcvector/go.sum
index b55032cb7..e030ebcf8 100644
--- a/knowledge/vectorstore/tcvector/go.sum
+++ b/knowledge/vectorstore/tcvector/go.sum
@@ -63,5 +63,5 @@ gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251020094851-6ab922c9dab1 h1:P+OyPh+QCNuO8u+M2UPTYZCGKnH9YAcijC8ULokAdTw=
-trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251020094851-6ab922c9dab1/go.mod h1:Gtytau9Uoc3oPo/dpHvKit+tQn9Qlk5XFG1RiZTGqfk=
+trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a h1:dOon6HF2sPRFnhCLEiAeKPc21JHL2eX7UBWjIR8PLaY=
+trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a/go.mod h1:Gtytau9Uoc3oPo/dpHvKit+tQn9Qlk5XFG1RiZTGqfk=
diff --git a/memory/redis/go.mod b/memory/redis/go.mod
index 26593cac5..517691cc5 100644
--- a/memory/redis/go.mod
+++ b/memory/redis/go.mod
@@ -25,5 +25,5 @@ require (
 	go.uber.org/multierr v1.10.0 // indirect
 	go.uber.org/zap v1.27.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
-	trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251020094851-6ab922c9dab1 // indirect
+	trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a // indirect
 )
diff --git a/memory/redis/go.sum b/memory/redis/go.sum
index 692fb18d9..2a8fa6c70 100644
--- a/memory/redis/go.sum
+++ b/memory/redis/go.sum
@@ -30,5 +30,5 @@ gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251020094851-6ab922c9dab1 h1:P+OyPh+QCNuO8u+M2UPTYZCGKnH9YAcijC8ULokAdTw=
-trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251020094851-6ab922c9dab1/go.mod h1:Gtytau9Uoc3oPo/dpHvKit+tQn9Qlk5XFG1RiZTGqfk=
+trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a h1:dOon6HF2sPRFnhCLEiAeKPc21JHL2eX7UBWjIR8PLaY=
+trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a/go.mod h1:Gtytau9Uoc3oPo/dpHvKit+tQn9Qlk5XFG1RiZTGqfk=
diff --git a/server/a2a/server.go b/server/a2a/server.go
index 26bea7ceb..ab595f033 100644
--- a/server/a2a/server.go
+++ b/server/a2a/server.go
@@ -15,6 +15,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"net/url"
 	"time"
 
 	"trpc.group/trpc-go/trpc-a2a-go/auth"
@@ -23,6 +24,7 @@ import (
 	"trpc.group/trpc-go/trpc-a2a-go/taskmanager"
 	"trpc.group/trpc-go/trpc-agent-go/agent"
 	"trpc.group/trpc-go/trpc-agent-go/event"
+	ia2a "trpc.group/trpc-go/trpc-agent-go/internal/a2a"
 	"trpc.group/trpc-go/trpc-agent-go/log"
 	"trpc.group/trpc-go/trpc-agent-go/model"
 	"trpc.group/trpc-go/trpc-agent-go/runner"
@@ -47,8 +49,10 @@ func New(opts ...Option) (*a2a.A2AServer, error) {
 		return nil, errors.New("agent is required")
 	}
 
-	if options.host == "" {
-		return nil, errors.New("host is required")
+	// Host is only required if we need to build an agent card
+	// If user provides a custom agent card, host is optional
+	if options.agentCard == nil && options.host == "" {
+		return nil, errors.New("host is required when agent card is not provided")
 	}
 
 	return buildA2AServer(options)
@@ -61,7 +65,9 @@ func buildAgentCard(options *options) a2a.AgentCard {
 	agent := options.agent
 	desc := agent.Info().Description
 	name := agent.Info().Name
-	url := fmt.Sprintf("http://%s", options.host)
+
+	// Normalize the host to ensure it has a proper URL scheme
+	url := ia2a.NormalizeURL(options.host)
 
 	// Build skills from agent tools
 	skills := buildSkillsFromTools(agent, name, desc)
@@ -137,11 +143,15 @@ func buildA2AServer(options *options) (*a2a.A2AServer, error) {
 		userIDHeader = serverUserIDHeader
 	}
 
+	// Extract base path from agent card URL for request routing.
+	// If the URL contains a path component (e.g., "http://example.com/api/v1"),
+	// it will be extracted and used as the base path for routing incoming requests.
+	basePath := extractBasePath(ia2a.NormalizeURL(agentCard.URL))
+
 	opts := []a2a.Option{
 		a2a.WithAuthProvider(&defaultAuthProvider{userIDHeader: userIDHeader}),
+		a2a.WithBasePath(basePath),
 	}
-
-	// if other AuthProvider is set, user info should be covered
 	opts = append(opts, options.extraOptions...)
 	a2aServer, err := a2a.NewA2AServer(agentCard, taskManager, opts...)
 	if err != nil {
@@ -150,6 +160,36 @@ func buildA2AServer(options *options) (*a2a.A2AServer, error) {
 	return a2aServer, nil
 }
 
+// extractBasePath extracts the path component from a URL for request routing.
+// It parses the URL and returns the path if the URL has a valid scheme.
+//
+// Examples:
+//   - "http://example.com/api/v1" → "/api/v1"
+//   - "https://example.com/docs" → "/docs"
+//   - "grpc://service:9090/rpc" → "/rpc"
+//   - "http://example.com" → "" (no path)
+//   - "invalid-url" → "" (no scheme)
+//
+// The extracted path is used as the base path for routing incoming A2A requests.
+func extractBasePath(urlStr string) string {
+	if urlStr == "" {
+		return ""
+	}
+
+	u, err := url.Parse(urlStr)
+	if err != nil {
+		return ""
+	}
+
+	// Extract path if URL has a valid scheme
+	if u.Scheme != "" {
+		return u.Path
+	}
+
+	// No valid scheme, return empty string
+	return ""
+}
+
 // messageProcessor is the message processor for the a2a server.
 type messageProcessor struct {
 	runner              runner.Runner
diff --git a/server/a2a/server_option.go b/server/a2a/server_option.go
index 5058d1651..ae554ff32 100644
--- a/server/a2a/server_option.go
+++ b/server/a2a/server_option.go
@@ -133,7 +133,27 @@ func WithProcessMessageHook(hook ProcessMessageHook) Option {
 	}
 }
 
-// WithHost sets the host to use.
+// WithHost sets the host address for the A2A server's agent card URL.
+// The host will be normalized to a complete URL and used by other agents to discover and communicate with this agent.
+//
+// Supported formats:
+//   - "localhost:8080" → "http://localhost:8080"
+//   - "example.com" → "http://example.com"
+//   - "http://example.com/api/v1" → "http://example.com/api/v1" (used as-is)
+//   - "https://example.com" → "https://example.com" (used as-is)
+//   - "grpc://service:9090" → "grpc://service:9090" (custom schemes supported)
+//
+// If the URL contains a path (e.g., "http://example.com/api/v1"), the path will be
+// automatically extracted and set as the base path for routing requests.
+//
+// Example:
+//
+//	server, _ := a2a.New(
+//	    a2a.WithAgent(myAgent),
+//	    a2a.WithHost("localhost:8080"),  // URL: "http://localhost:8080", basePath: ""
+//	    // or
+//	    a2a.WithHost("http://example.com/api/v1"),  // URL: "http://example.com/api/v1", basePath: "/api/v1"
+//	)
 func WithHost(host string) Option {
 	return func(opts *options) {
 		opts.host = host
diff --git a/server/a2a/server_test.go b/server/a2a/server_test.go
index 24ba77651..d7a3213d6 100644
--- a/server/a2a/server_test.go
+++ b/server/a2a/server_test.go
@@ -23,6 +23,7 @@ import (
 	"trpc.group/trpc-go/trpc-a2a-go/taskmanager"
 	"trpc.group/trpc-go/trpc-agent-go/agent"
 	"trpc.group/trpc-go/trpc-agent-go/event"
+	ia2a "trpc.group/trpc-go/trpc-agent-go/internal/a2a"
 	"trpc.group/trpc-go/trpc-agent-go/model"
 	"trpc.group/trpc-go/trpc-agent-go/session"
 	"trpc.group/trpc-go/trpc-agent-go/session/inmemory"
@@ -1387,13 +1388,25 @@ func TestNew(t *testing.T) {
 			errMsg:  "agent is required",
 		},
 		{
-			name: "missing host with empty host",
+			name: "missing host without agent card",
 			opts: []Option{
 				WithAgent(&mockAgent{name: "test-agent", description: "test description"}, true),
 				WithHost(""),
 			},
 			wantErr: true,
-			errMsg:  "host is required",
+			errMsg:  "host is required when agent card is not provided",
+		},
+		{
+			name: "with agent card but no host - should succeed",
+			opts: []Option{
+				WithAgent(&mockAgent{name: "test-agent", description: "test description"}, true),
+				WithAgentCard(a2a.AgentCard{
+					Name:        "custom-agent",
+					Description: "custom description",
+					URL:         "http://custom.example.com",
+				}),
+			},
+			wantErr: false,
 		},
 		{
 			name:    "no options",
@@ -1434,7 +1447,7 @@ func TestBuildAgentCard(t *testing.T) {
 		expected a2a.AgentCard
 	}{
 		{
-			name: "agent with no tools",
+			name: "agent with no tools - host only",
 			options: &options{
 				agent: &mockAgent{
 					name:        "test-agent",
@@ -1464,6 +1477,99 @@ func TestBuildAgentCard(t *testing.T) {
 				DefaultOutputModes: []string{"text"},
 			},
 		},
+		{
+			name: "agent with http URL",
+			options: &options{
+				agent: &mockAgent{
+					name:        "test-agent",
+					description: "test description",
+					tools:       []tool.Tool{},
+				},
+				host:            "http://example.com:8080",
+				enableStreaming: true,
+			},
+			expected: a2a.AgentCard{
+				Name:        "test-agent",
+				Description: "test description",
+				URL:         "http://example.com:8080",
+				Capabilities: a2a.AgentCapabilities{
+					Streaming: boolPtr(true),
+				},
+				Skills: []a2a.AgentSkill{
+					{
+						Name:        "test-agent",
+						Description: stringPtr("test description"),
+						InputModes:  []string{"text"},
+						OutputModes: []string{"text"},
+						Tags:        []string{"default"},
+					},
+				},
+				DefaultInputModes:  []string{"text"},
+				DefaultOutputModes: []string{"text"},
+			},
+		},
+		{
+			name: "agent with https URL",
+			options: &options{
+				agent: &mockAgent{
+					name:        "test-agent",
+					description: "test description",
+					tools:       []tool.Tool{},
+				},
+				host:            "https://secure.example.com",
+				enableStreaming: true,
+			},
+			expected: a2a.AgentCard{
+				Name:        "test-agent",
+				Description: "test description",
+				URL:         "https://secure.example.com",
+				Capabilities: a2a.AgentCapabilities{
+					Streaming: boolPtr(true),
+				},
+				Skills: []a2a.AgentSkill{
+					{
+						Name:        "test-agent",
+						Description: stringPtr("test description"),
+						InputModes:  []string{"text"},
+						OutputModes: []string{"text"},
+						Tags:        []string{"default"},
+					},
+				},
+				DefaultInputModes:  []string{"text"},
+				DefaultOutputModes: []string{"text"},
+			},
+		},
+		{
+			name: "agent with custom URL",
+			options: &options{
+				agent: &mockAgent{
+					name:        "custom-agent",
+					description: "agent with custom scheme",
+					tools:       []tool.Tool{},
+				},
+				host:            "custom://service.namespace",
+				enableStreaming: true,
+			},
+			expected: a2a.AgentCard{
+				Name:        "custom-agent",
+				Description: "agent with custom scheme",
+				URL:         "custom://service.namespace",
+				Capabilities: a2a.AgentCapabilities{
+					Streaming: boolPtr(true),
+				},
+				Skills: []a2a.AgentSkill{
+					{
+						Name:        "custom-agent",
+						Description: stringPtr("agent with custom scheme"),
+						InputModes:  []string{"text"},
+						OutputModes: []string{"text"},
+						Tags:        []string{"default"},
+					},
+				},
+				DefaultInputModes:  []string{"text"},
+				DefaultOutputModes: []string{"text"},
+			},
+		},
 		{
 			name: "agent with tools",
 			options: &options{
@@ -1835,3 +1941,154 @@ func compareStringSlices(a, b []string) bool {
 	}
 	return true
 }
+
+func TestNormalizeURL(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    string
+		expected string
+	}{
+		{
+			name:     "empty string",
+			input:    "",
+			expected: "",
+		},
+		{
+			name:     "already has http scheme",
+			input:    "http://example.com",
+			expected: "http://example.com",
+		},
+		{
+			name:     "already has https scheme",
+			input:    "https://example.com",
+			expected: "https://example.com",
+		},
+		{
+			name:     "custom scheme",
+			input:    "custom://service.namespace",
+			expected: "custom://service.namespace",
+		},
+		{
+			name:     "custom scheme",
+			input:    "grpc://example.com:9090",
+			expected: "grpc://example.com:9090",
+		},
+		{
+			name:     "host only - simple domain",
+			input:    "example.com",
+			expected: "http://example.com",
+		},
+		{
+			name:     "host only - with port",
+			input:    "localhost:8080",
+			expected: "http://localhost:8080",
+		},
+		{
+			name:     "host only - IP address",
+			input:    "192.168.1.1",
+			expected: "http://192.168.1.1",
+		},
+		{
+			name:     "host only - IP with port",
+			input:    "127.0.0.1:9999",
+			expected: "http://127.0.0.1:9999",
+		},
+		{
+			name:     "complete URL with path",
+			input:    "http://example.com/api/v1",
+			expected: "http://example.com/api/v1",
+		},
+		{
+			name:     "https URL with path and query",
+			input:    "https://example.com/api?key=value",
+			expected: "https://example.com/api?key=value",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := ia2a.NormalizeURL(tt.input)
+			if result != tt.expected {
+				t.Errorf("NormalizeURL(%q) = %q, want %q", tt.input, result, tt.expected)
+			}
+		})
+	}
+}
+
+func TestExtractBasePath(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    string
+		expected string
+	}{
+		{
+			name:     "empty string",
+			input:    "",
+			expected: "",
+		},
+		{
+			name:     "http with path",
+			input:    "http://example.com/api/v1",
+			expected: "/api/v1",
+		},
+		{
+			name:     "https with path",
+			input:    "https://example.com/api/v1/agents",
+			expected: "/api/v1/agents",
+		},
+		{
+			name:     "http without path",
+			input:    "http://example.com",
+			expected: "",
+		},
+		{
+			name:     "https without path",
+			input:    "https://example.com:8080",
+			expected: "",
+		},
+		{
+			name:     "http with root path",
+			input:    "http://example.com/",
+			expected: "/",
+		},
+		{
+			name:     "custom scheme with path - should return path",
+			input:    "grpc://example.com:9090/service",
+			expected: "/service",
+		},
+		{
+			name:     "custom scheme without path - should return empty",
+			input:    "custom://service.namespace",
+			expected: "",
+		},
+		{
+			name:     "http with path and query",
+			input:    "http://example.com/api?key=value",
+			expected: "/api",
+		},
+		{
+			name:     "https with path and fragment",
+			input:    "https://example.com/docs#section",
+			expected: "/docs",
+		},
+		{
+			name:     "invalid URL - no scheme",
+			input:    "://invalid",
+			expected: "",
+		},
+		{
+			name:     "grpc with complex path",
+			input:    "grpc://service:9090/api/v1/rpc",
+			expected: "/api/v1/rpc",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := extractBasePath(tt.input)
+			if result != tt.expected {
+				t.Errorf("extractBasePath(%q) = %q, want %q", tt.input, result, tt.expected)
+			}
+		})
+	}
+}
diff --git a/session/redis/go.mod b/session/redis/go.mod
index 9d40f218d..c5bb4dc99 100644
--- a/session/redis/go.mod
+++ b/session/redis/go.mod
@@ -26,5 +26,5 @@ require (
 	go.uber.org/multierr v1.10.0 // indirect
 	go.uber.org/zap v1.27.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
-	trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251020094851-6ab922c9dab1 // indirect
+	trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a // indirect
 )
diff --git a/session/redis/go.sum b/session/redis/go.sum
index face1c654..fda57b276 100644
--- a/session/redis/go.sum
+++ b/session/redis/go.sum
@@ -32,5 +32,5 @@ gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251020094851-6ab922c9dab1 h1:P+OyPh+QCNuO8u+M2UPTYZCGKnH9YAcijC8ULokAdTw=
-trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251020094851-6ab922c9dab1/go.mod h1:Gtytau9Uoc3oPo/dpHvKit+tQn9Qlk5XFG1RiZTGqfk=
+trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a h1:dOon6HF2sPRFnhCLEiAeKPc21JHL2eX7UBWjIR8PLaY=
+trpc.group/trpc-go/trpc-a2a-go v0.2.5-0.20251023030722-7f02b57fd14a/go.mod h1:Gtytau9Uoc3oPo/dpHvKit+tQn9Qlk5XFG1RiZTGqfk=