diff --git a/venus-devtool/api-gen/common/common.go b/venus-devtool/api-gen/common/common.go
index b4e1102c9e..fa081a6722 100644
--- a/venus-devtool/api-gen/common/common.go
+++ b/venus-devtool/api-gen/common/common.go
@@ -34,6 +34,7 @@ func init() {
 			RPCMeta: util.RPCMeta{
 				Version:         0,
 				MethodNamespace: "Message",
+				ApiNamespace:    "messager.IMessager",
 			},
 		},
 		util.APIMeta{
@@ -43,7 +44,8 @@ func init() {
 				IncludeAll: true,
 			},
 			RPCMeta: util.RPCMeta{
-				Version: 0,
+				Version:      0,
+				ApiNamespace: "wallet.IFullAPI",
 			},
 		},
 		util.APIMeta{
@@ -55,6 +57,7 @@ func init() {
 			RPCMeta: util.RPCMeta{
 				Version:         2,
 				MethodNamespace: "Gateway",
+				ApiNamespace:    "gateway.IGateway",
 			},
 		},
 		util.APIMeta{
@@ -66,6 +69,7 @@ func init() {
 			RPCMeta: util.RPCMeta{
 				Version:         1,
 				MethodNamespace: "Gateway",
+				ApiNamespace:    "gateway.IGateway",
 			},
 		},
 		util.APIMeta{
@@ -77,6 +81,7 @@ func init() {
 			RPCMeta: util.RPCMeta{
 				Version:         0,
 				MethodNamespace: "Gateway",
+				ApiNamespace:    "gateway.IGateway",
 			},
 		},
 		util.APIMeta{
@@ -88,6 +93,7 @@ func init() {
 			RPCMeta: util.RPCMeta{
 				Version:         0,
 				MethodNamespace: "VENUS_MARKET",
+				ApiNamespace:    "v1.IMarket",
 			},
 		},
 		util.APIMeta{
@@ -99,6 +105,7 @@ func init() {
 			RPCMeta: util.RPCMeta{
 				Version:         1,
 				MethodNamespace: "VENUS_MARKET",
+				ApiNamespace:    "v1.IMarket",
 			},
 		},
 		util.APIMeta{
@@ -110,6 +117,7 @@ func init() {
 			RPCMeta: util.RPCMeta{
 				Version:         0,
 				MethodNamespace: "VENUS_MARKET_CLIENT",
+				ApiNamespace:    "client.IMarketClient",
 			},
 		},
 	)
diff --git a/venus-devtool/api-gen/doc_gen.go b/venus-devtool/api-gen/doc_gen.go
index 18f1a75f47..bd0999c033 100644
--- a/venus-devtool/api-gen/doc_gen.go
+++ b/venus-devtool/api-gen/doc_gen.go
@@ -156,21 +156,25 @@ func writeAPIInfo(astMeta *util.ASTMeta, rpcMeta util.RPCMeta, groups []MethodGr
 	if methNs == "" {
 		methNs = "Filecoin"
 	}
+
+	apiNs := rpcMeta.ApiNamespace
+
 	tmpl, err := template.New("curl").Parse(`# Sample code of curl
 
 {{ .StartBash }}
 # <Inputs> corresponding to the value of Inputs Tag of each API
-curl http://<ip>:<port>/rpc/v{{ .APIVersion }} -X POST -H "Content-Type: application/json"  -H "Authorization: Bearer <token>"  -d '{"method": "{{ .Namespace }}.<method>", "params": <Inputs>, "id": 0}'
+curl http://<ip>:<port>/rpc/v{{ .APIVersion }} -X POST -H "Content-Type: application/json" -H "X-VENUS-API-NAMESPACE: {{ .APINamespace }}" -H "Authorization: Bearer <token>"  -d '{"method": "{{ .Namespace }}.<method>", "params": <Inputs>, "id": 0}'
 {{ .EndBash }}
 `)
 	if err != nil {
 		return fmt.Errorf("parse template: %w", err)
 	}
 	err = tmpl.Execute(buf, map[string]interface{}{
-		"APIVersion": rpcMeta.Version,
-		"Namespace":  methNs,
-		"StartBash":  "```bash",
-		"EndBash":    "```",
+		"APIVersion":   rpcMeta.Version,
+		"Namespace":    methNs,
+		"APINamespace": apiNs,
+		"StartBash":    "```bash",
+		"EndBash":      "```",
 	})
 	if err != nil {
 		return fmt.Errorf("exec curl template: %w", err)
diff --git a/venus-devtool/util/api_meta.go b/venus-devtool/util/api_meta.go
index 28bdeb223d..ef1399a381 100644
--- a/venus-devtool/util/api_meta.go
+++ b/venus-devtool/util/api_meta.go
@@ -35,7 +35,8 @@ var ChainAPIPairs = []struct {
 				IncludeAll: true,
 			},
 			RPCMeta: RPCMeta{
-				Version: 0,
+				Version:      0,
+				ApiNamespace: "v1.FullNode",
 			},
 		},
 	},
@@ -55,7 +56,8 @@ var ChainAPIPairs = []struct {
 				IncludeAll: true,
 			},
 			RPCMeta: RPCMeta{
-				Version: 1,
+				Version:      1,
+				ApiNamespace: "v1.FullNode",
 			},
 		},
 	},
@@ -67,6 +69,7 @@ type RPCMeta struct {
 	Version         uint32
 	Namespace       string
 	MethodNamespace string
+	ApiNamespace    string
 }
 
 type APIMeta struct {
diff --git a/venus-shared/api/chain/v0/method.md b/venus-shared/api/chain/v0/method.md
index 844a36ae2b..256c7df767 100644
--- a/venus-shared/api/chain/v0/method.md
+++ b/venus-shared/api/chain/v0/method.md
@@ -2,7 +2,7 @@
 
 ```bash
 # <Inputs> corresponding to the value of Inputs Tag of each API
-curl http://<ip>:<port>/rpc/v0 -X POST -H "Content-Type: application/json"  -H "Authorization: Bearer <token>"  -d '{"method": "Filecoin.<method>", "params": <Inputs>, "id": 0}'
+curl http://<ip>:<port>/rpc/v0 -X POST -H "Content-Type: application/json" -H "X-VENUS-API-NAMESPACE: v1.FullNode" -H "Authorization: Bearer <token>"  -d '{"method": "Filecoin.<method>", "params": <Inputs>, "id": 0}'
 ```
 # Groups
 
diff --git a/venus-shared/api/chain/v1/method.md b/venus-shared/api/chain/v1/method.md
index 143f53a90e..99428414e4 100644
--- a/venus-shared/api/chain/v1/method.md
+++ b/venus-shared/api/chain/v1/method.md
@@ -2,7 +2,7 @@
 
 ```bash
 # <Inputs> corresponding to the value of Inputs Tag of each API
-curl http://<ip>:<port>/rpc/v1 -X POST -H "Content-Type: application/json"  -H "Authorization: Bearer <token>"  -d '{"method": "Filecoin.<method>", "params": <Inputs>, "id": 0}'
+curl http://<ip>:<port>/rpc/v1 -X POST -H "Content-Type: application/json" -H "X-VENUS-API-NAMESPACE: v1.FullNode" -H "Authorization: Bearer <token>"  -d '{"method": "Filecoin.<method>", "params": <Inputs>, "id": 0}'
 ```
 # Groups
 
diff --git a/venus-shared/api/gateway/v0/method.md b/venus-shared/api/gateway/v0/method.md
index fa2ffa9fe9..09dcade456 100644
--- a/venus-shared/api/gateway/v0/method.md
+++ b/venus-shared/api/gateway/v0/method.md
@@ -2,7 +2,7 @@
 
 ```bash
 # <Inputs> corresponding to the value of Inputs Tag of each API
-curl http://<ip>:<port>/rpc/v0 -X POST -H "Content-Type: application/json"  -H "Authorization: Bearer <token>"  -d '{"method": "Gateway.<method>", "params": <Inputs>, "id": 0}'
+curl http://<ip>:<port>/rpc/v0 -X POST -H "Content-Type: application/json" -H "X-VENUS-API-NAMESPACE: gateway.IGateway" -H "Authorization: Bearer <token>"  -d '{"method": "Gateway.<method>", "params": <Inputs>, "id": 0}'
 ```
 # Groups
 
diff --git a/venus-shared/api/gateway/v1/method.md b/venus-shared/api/gateway/v1/method.md
index 32acd22260..a8211bdba4 100644
--- a/venus-shared/api/gateway/v1/method.md
+++ b/venus-shared/api/gateway/v1/method.md
@@ -2,7 +2,7 @@
 
 ```bash
 # <Inputs> corresponding to the value of Inputs Tag of each API
-curl http://<ip>:<port>/rpc/v1 -X POST -H "Content-Type: application/json"  -H "Authorization: Bearer <token>"  -d '{"method": "Gateway.<method>", "params": <Inputs>, "id": 0}'
+curl http://<ip>:<port>/rpc/v1 -X POST -H "Content-Type: application/json" -H "X-VENUS-API-NAMESPACE: gateway.IGateway" -H "Authorization: Bearer <token>"  -d '{"method": "Gateway.<method>", "params": <Inputs>, "id": 0}'
 ```
 # Groups
 
diff --git a/venus-shared/api/gateway/v2/method.md b/venus-shared/api/gateway/v2/method.md
index fc7ae223a7..40ec1e852e 100644
--- a/venus-shared/api/gateway/v2/method.md
+++ b/venus-shared/api/gateway/v2/method.md
@@ -2,7 +2,7 @@
 
 ```bash
 # <Inputs> corresponding to the value of Inputs Tag of each API
-curl http://<ip>:<port>/rpc/v2 -X POST -H "Content-Type: application/json"  -H "Authorization: Bearer <token>"  -d '{"method": "Gateway.<method>", "params": <Inputs>, "id": 0}'
+curl http://<ip>:<port>/rpc/v2 -X POST -H "Content-Type: application/json" -H "X-VENUS-API-NAMESPACE: gateway.IGateway" -H "Authorization: Bearer <token>"  -d '{"method": "Gateway.<method>", "params": <Inputs>, "id": 0}'
 ```
 # Groups
 
diff --git a/venus-shared/api/market/client/method.md b/venus-shared/api/market/client/method.md
index c59105831d..4a44e5047b 100644
--- a/venus-shared/api/market/client/method.md
+++ b/venus-shared/api/market/client/method.md
@@ -2,7 +2,7 @@
 
 ```bash
 # <Inputs> corresponding to the value of Inputs Tag of each API
-curl http://<ip>:<port>/rpc/v0 -X POST -H "Content-Type: application/json"  -H "Authorization: Bearer <token>"  -d '{"method": "VENUS_MARKET_CLIENT.<method>", "params": <Inputs>, "id": 0}'
+curl http://<ip>:<port>/rpc/v0 -X POST -H "Content-Type: application/json" -H "X-VENUS-API-NAMESPACE: client.IMarketClient" -H "Authorization: Bearer <token>"  -d '{"method": "VENUS_MARKET_CLIENT.<method>", "params": <Inputs>, "id": 0}'
 ```
 # Groups
 
diff --git a/venus-shared/api/market/v0/method.md b/venus-shared/api/market/v0/method.md
index 76cd317e58..1e93505f2d 100644
--- a/venus-shared/api/market/v0/method.md
+++ b/venus-shared/api/market/v0/method.md
@@ -2,7 +2,7 @@
 
 ```bash
 # <Inputs> corresponding to the value of Inputs Tag of each API
-curl http://<ip>:<port>/rpc/v0 -X POST -H "Content-Type: application/json"  -H "Authorization: Bearer <token>"  -d '{"method": "VENUS_MARKET.<method>", "params": <Inputs>, "id": 0}'
+curl http://<ip>:<port>/rpc/v0 -X POST -H "Content-Type: application/json" -H "X-VENUS-API-NAMESPACE: v1.IMarket" -H "Authorization: Bearer <token>"  -d '{"method": "VENUS_MARKET.<method>", "params": <Inputs>, "id": 0}'
 ```
 # Groups
 
diff --git a/venus-shared/api/market/v1/method.md b/venus-shared/api/market/v1/method.md
index 4f6e9aef24..9b1d8929af 100644
--- a/venus-shared/api/market/v1/method.md
+++ b/venus-shared/api/market/v1/method.md
@@ -2,7 +2,7 @@
 
 ```bash
 # <Inputs> corresponding to the value of Inputs Tag of each API
-curl http://<ip>:<port>/rpc/v1 -X POST -H "Content-Type: application/json"  -H "Authorization: Bearer <token>"  -d '{"method": "VENUS_MARKET.<method>", "params": <Inputs>, "id": 0}'
+curl http://<ip>:<port>/rpc/v1 -X POST -H "Content-Type: application/json" -H "X-VENUS-API-NAMESPACE: v1.IMarket" -H "Authorization: Bearer <token>"  -d '{"method": "VENUS_MARKET.<method>", "params": <Inputs>, "id": 0}'
 ```
 # Groups
 
diff --git a/venus-shared/api/messager/method.md b/venus-shared/api/messager/method.md
index 34acbbfb35..61b44ce211 100644
--- a/venus-shared/api/messager/method.md
+++ b/venus-shared/api/messager/method.md
@@ -2,7 +2,7 @@
 
 ```bash
 # <Inputs> corresponding to the value of Inputs Tag of each API
-curl http://<ip>:<port>/rpc/v0 -X POST -H "Content-Type: application/json"  -H "Authorization: Bearer <token>"  -d '{"method": "Message.<method>", "params": <Inputs>, "id": 0}'
+curl http://<ip>:<port>/rpc/v0 -X POST -H "Content-Type: application/json" -H "X-VENUS-API-NAMESPACE: messager.IMessager" -H "Authorization: Bearer <token>"  -d '{"method": "Message.<method>", "params": <Inputs>, "id": 0}'
 ```
 # Groups
 
diff --git a/venus-shared/api/wallet/method.md b/venus-shared/api/wallet/method.md
index 99982e56cc..835125951d 100644
--- a/venus-shared/api/wallet/method.md
+++ b/venus-shared/api/wallet/method.md
@@ -2,7 +2,7 @@
 
 ```bash
 # <Inputs> corresponding to the value of Inputs Tag of each API
-curl http://<ip>:<port>/rpc/v0 -X POST -H "Content-Type: application/json"  -H "Authorization: Bearer <token>"  -d '{"method": "Filecoin.<method>", "params": <Inputs>, "id": 0}'
+curl http://<ip>:<port>/rpc/v0 -X POST -H "Content-Type: application/json" -H "X-VENUS-API-NAMESPACE: wallet.IFullAPI" -H "Authorization: Bearer <token>"  -d '{"method": "Filecoin.<method>", "params": <Inputs>, "id": 0}'
 ```
 # Groups