diff --git a/crates/ns-indexer/Cargo.toml b/crates/ns-indexer/Cargo.toml
index 75d8356..6b659ce 100644
--- a/crates/ns-indexer/Cargo.toml
+++ b/crates/ns-indexer/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ns-indexer"
-version = "0.3.1"
+version = "0.4.0"
 edition = "2021"
 rust-version = "1.64"
 description = "Name & Service Protocol indexer service in Rust"
diff --git a/crates/ns-indexer/doc/ns-indexer-api-insomnia-v1.yaml b/crates/ns-indexer/doc/ns-indexer-api-insomnia-v1.yaml
index c7b3c14..b7612a8 100644
--- a/crates/ns-indexer/doc/ns-indexer-api-insomnia-v1.yaml
+++ b/crates/ns-indexer/doc/ns-indexer-api-insomnia-v1.yaml
@@ -1,6 +1,6 @@
 _type: export
 __export_format: 4
-__export_date: 2024-01-01T08:44:27.315Z
+__export_date: 2024-01-03T04:26:57.860Z
 __export_source: insomnia.desktop.app:v8.5.1
 resources:
   - _id: req_b1a618c6a5b7424f82a71b4d04a382db
@@ -30,9 +30,9 @@ resources:
     _type: request
   - _id: wrk_6740d036556540e7972210367d3cbc69
     parentId: null
-    modified: 1702698428340
+    modified: 1704255390271
     created: 1702698428340
-    name: Indexer API
+    name: NS-Indexer API
     description: ""
     scope: collection
     _type: workspace
@@ -63,10 +63,10 @@ resources:
     _type: request
   - _id: req_c4a8deb0e59343708f6540522b0772f6
     parentId: wrk_6740d036556540e7972210367d3cbc69
-    modified: 1702901552482
+    modified: 1704255617700
     created: 1702871420490
-    url: "{{ _.api_host }}/best/inscription"
-    name: best_inscription/get
+    url: "{{ _.api_host }}/best/inscription/get_last"
+    name: best_inscription/get_last
     description: ""
     method: GET
     body: {}
@@ -86,6 +86,68 @@ resources:
     settingRebuildPath: true
     settingFollowRedirects: global
     _type: request
+  - _id: req_363bdc0bd5fc427a92083954b4b75286
+    parentId: wrk_6740d036556540e7972210367d3cbc69
+    modified: 1704255791206
+    created: 1704255639766
+    url: "{{ _.api_host }}/best/inscription"
+    name: best_inscription/get
+    description: ""
+    method: GET
+    body: {}
+    parameters:
+      - id: pair_6c07f58e12cd4368bf9ac052134f175e
+        name: name
+        value: 𝚡
+        description: ""
+      - id: pair_c69e64df93ba4498b209cf77e39cd013
+        name: sequence
+        value: "0"
+        description: ""
+    headers:
+      - name: User-Agent
+        value: insomnia/8.4.5
+      - name: Accept
+        value: application/json
+    authentication: {}
+    metaSortKey: -1701649934666.5781
+    isPrivate: false
+    settingStoreCookies: true
+    settingSendCookies: true
+    settingDisableRenderRequestBody: false
+    settingEncodeUrl: true
+    settingRebuildPath: true
+    settingFollowRedirects: global
+    _type: request
+  - _id: req_e7b6cf526bb648cfab8f05c5d49bfeb8
+    parentId: wrk_6740d036556540e7972210367d3cbc69
+    modified: 1704255740036
+    created: 1704255718590
+    url: "{{ _.api_host }}/best/inscription/get_by_height"
+    name: best_inscription/get_by_height
+    description: ""
+    method: GET
+    body: {}
+    parameters:
+      - id: pair_6c07f58e12cd4368bf9ac052134f175e
+        name: height
+        value: "1997"
+        description: ""
+    headers:
+      - name: User-Agent
+        value: insomnia/8.4.5
+      - name: Accept
+        value: application/json
+    authentication: {}
+    metaSortKey: -1701609605064.5234
+    isPrivate: false
+    settingStoreCookies: true
+    settingSendCookies: true
+    settingDisableRenderRequestBody: false
+    settingEncodeUrl: true
+    settingRebuildPath: true
+    settingFollowRedirects: global
+    _type: request
   - _id: req_56d3cfbe6d7943098e89d202c0edd557
     parentId: wrk_6740d036556540e7972210367d3cbc69
     modified: 1702901563095
@@ -111,6 +173,97 @@ resources:
     settingRebuildPath: true
     settingFollowRedirects: global
     _type: request
+  - _id: req_93b0153eebef4b37b1e55d3d92a65356
+    parentId: wrk_6740d036556540e7972210367d3cbc69
+    modified: 1704255803344
+    created: 1704255784178
+    url: "{{ _.api_host }}/best/name"
+    name: best_name/get
+    description: ""
+    method: GET
+    body: {}
+    parameters:
+      - id: pair_6c07f58e12cd4368bf9ac052134f175e
+        name: name
+        value: 𝚡
+        description: ""
+    headers:
+      - name: User-Agent
+        value: insomnia/8.4.5
+      - name: Accept
+        value: application/json
+    authentication: {}
+    metaSortKey: -1701488616258.3594
+    isPrivate: false
+    settingStoreCookies: true
+    settingSendCookies: true
+    settingDisableRenderRequestBody: false
+    settingEncodeUrl: true
+    settingRebuildPath: true
+    settingFollowRedirects: global
+    _type: request
+  - _id: req_1a7760f6eb3c4a36ad1c194412e42775
+    parentId: wrk_6740d036556540e7972210367d3cbc69
+    modified: 1704255862830
+    created: 1704255851797
+    url: "{{ _.api_host }}/best/service"
+    name: best_service/get
+    description: ""
+    method: GET
+    body: {}
+    parameters:
+      - id: pair_6c07f58e12cd4368bf9ac052134f175e
+        name: name
+        value: 𝚡
+        description: ""
+      - id: pair_4706db882d41468397746d4ede78a07b
+        name: code
+        value: "0"
+        description: ""
+    headers:
+      - name: User-Agent
+        value: insomnia/8.4.5
+      - name: Accept
+        value: application/json
+    authentication: {}
+    metaSortKey: -1701448286656.3047
+    isPrivate: false
+    settingStoreCookies: true
+    settingSendCookies: true
+    settingDisableRenderRequestBody: false
+    settingEncodeUrl: true
+    settingRebuildPath: true
+    settingFollowRedirects: global
+    _type: request
+  - _id: req_1b571fe4b2c349eeb27f02211c72cfc3
+    parentId: wrk_6740d036556540e7972210367d3cbc69
+    modified: 1704255928462
+    created: 1703043892732
+    url: "{{ _.api_host }}/best/utxo/list"
+    name: best_utxo/list_by_address
+    description: ""
+    method: GET
+    body: {}
+    parameters:
+      - id: pair_8352d8e48b92475fb3c8f48593275b6e
+        name: address
+        value: bc1q6dukpvmcxae0pdh95zgh793l5ept8fluhqqnyc
+        description: ""
+    headers:
+      - name: User-Agent
+        value: insomnia/8.4.5
+      - name: Accept
+        value: application/json
+    authentication: {}
+    metaSortKey: -1701428121855.2773
+    isPrivate: false
+    settingStoreCookies: true
+    settingSendCookies: true
+    settingDisableRenderRequestBody: false
+    settingEncodeUrl: true
+    settingRebuildPath: true
+    settingFollowRedirects: global
+    _type: request
   - _id: req_f7592cdb232f44468a3031caedeaf11f
     parentId: wrk_6740d036556540e7972210367d3cbc69
     modified: 1702866762535
@@ -287,7 +440,7 @@ resources:
     _type: request
   - _id: req_c1217c2f6388434a88c0d2f0cf2d7d49
     parentId: wrk_6740d036556540e7972210367d3cbc69
-    modified: 1703302708284
+    modified: 1704255831362
     created: 1702889481164
     url: "{{ _.api_host }}/v1/name"
     name: name/get
@@ -297,7 +450,7 @@ resources:
     parameters:
       - id: pair_8352d8e48b92475fb3c8f48593275b6e
         name: name
-        value: ab
+        value: 𝚡
         description: ""
     headers:
       - name: User-Agent
@@ -434,35 +587,6 @@ resources:
     settingRebuildPath: true
     settingFollowRedirects: global
     _type: request
-  - _id: req_1b571fe4b2c349eeb27f02211c72cfc3
-    parentId: wrk_6740d036556540e7972210367d3cbc69
-    modified: 1703481569875
-    created: 1703043892732
-    url: "{{ _.api_host }}/best/utxo/list"
-    name: utxo/list_by_address
-    description: ""
-    method: GET
-    body: {}
-    parameters:
-      - id: pair_8352d8e48b92475fb3c8f48593275b6e
-        name: address
-        value: bc1q6dukpvmcxae0pdh95zgh793l5ept8fluhqqnyc
-        description: ""
-    headers:
-      - name: User-Agent
-        value: insomnia/8.4.5
-      - name: Accept
-        value: application/json
-    authentication: {}
-    metaSortKey: -1700119930355.816
-    isPrivate: false
-    settingStoreCookies: true
-    settingSendCookies: true
-    settingDisableRenderRequestBody: false
-    settingEncodeUrl: true
-    settingRebuildPath: true
-    settingFollowRedirects: global
-    _type: request
   - _id: env_521c603fd2195d973072305ede8865ff09f1a5e4
     parentId: wrk_6740d036556540e7972210367d3cbc69
     modified: 1702698491521
diff --git a/crates/ns-indexer/src/api/inscription.rs b/crates/ns-indexer/src/api/inscription.rs
index dd7ae5b..d398aaf 100644
--- a/crates/ns-indexer/src/api/inscription.rs
+++ b/crates/ns-indexer/src/api/inscription.rs
@@ -21,12 +21,12 @@ impl InscriptionAPI {
     pub async fn get_last_accepted(
         Extension(ctx): Extension<Arc<ReqContext>>,
         to: PackObject<()>,
-        State(api): State<Arc<IndexerAPI>>,
+        State(app): State<Arc<IndexerAPI>>,
     ) -> Result<PackObject<SuccessResponse<Inscription>>, HTTPError> {
         ctx.set("action", "get_last_accepted_inscription".into())
             .await;
 
-        let last_accepted_state = api.state.last_accepted.read().await;
+        let last_accepted_state = app.state.last_accepted.read().await;
 
         match last_accepted_state.clone() {
             Some(inscription) => Ok(to.with(SuccessResponse::new(inscription))),
@@ -34,17 +34,17 @@ impl InscriptionAPI {
         }
     }
 
-    pub async fn get_best(
+    pub async fn get_last_best(
         Extension(ctx): Extension<Arc<ReqContext>>,
         to: PackObject<()>,
-        State(api): State<Arc<IndexerAPI>>,
+        State(app): State<Arc<IndexerAPI>>,
     ) -> Result<PackObject<SuccessResponse<Inscription>>, HTTPError> {
-        ctx.set("action", "get_best_inscription".into()).await;
+        ctx.set("action", "get_last_best_inscription".into()).await;
 
-        let best_inscriptions_state = api.state.best_inscriptions.read().await;
+        let best_inscriptions_state = app.state.best_inscriptions.read().await;
         let mut inscription = best_inscriptions_state.back().cloned();
         if inscription.is_none() {
-            let last_accepted_state = api.state.last_accepted.read().await;
+            let last_accepted_state = app.state.last_accepted.read().await;
             inscription = last_accepted_state.clone();
         }
 
@@ -54,6 +54,83 @@ impl InscriptionAPI {
         }
     }
 
+    pub async fn get_best(
+        State(app): State<Arc<IndexerAPI>>,
+        Extension(ctx): Extension<Arc<ReqContext>>,
+        to: PackObject<()>,
+        input: Query<QueryName>,
+    ) -> Result<PackObject<SuccessResponse<Inscription>>, HTTPError> {
+        input.validate()?;
+        if input.sequence.is_none() {
+            return Err(HTTPError::new(400, "sequence is required".to_string()));
+        }
+
+        let name = input.name.clone();
+        let sequence = input.sequence.unwrap() as u64;
+        ctx.set_kvs(vec![
+            ("action", "get_best_inscription".into()),
+            ("name", name.clone().into()),
+            ("sequence", sequence.into()),
+        ])
+        .await;
+
+        {
+            let best_inscriptions_state = app.state.best_inscriptions.read().await;
+            for i in best_inscriptions_state.iter() {
+                if i.name == name && i.sequence == sequence {
+                    return Ok(to.with(SuccessResponse::new(i.clone())));
+                }
+            }
+        }
+
+        {
+            let last_accepted_state = app.state.last_accepted.read().await;
+            if let Some(ins) = last_accepted_state.as_ref() {
+                if ins.name == name && ins.sequence == sequence {
+                    return Ok(to.with(SuccessResponse::new(ins.clone())));
+                }
+            }
+        }
+
+        Err(HTTPError::new(404, "not found".to_string()))
+    }
+
+    pub async fn get_best_by_height(
+        State(app): State<Arc<IndexerAPI>>,
+        Extension(ctx): Extension<Arc<ReqContext>>,
+        to: PackObject<()>,
+        input: Query<QueryHeight>,
+    ) -> Result<PackObject<SuccessResponse<Inscription>>, HTTPError> {
+        input.validate()?;
+
+        let height = input.height;
+        ctx.set_kvs(vec![
+            ("action", "get_best_inscription_by_height".into()),
+            ("height", height.into()),
+        ])
+        .await;
+
+        {
+            let best_inscriptions_state = app.state.best_inscriptions.read().await;
+            for i in best_inscriptions_state.iter() {
+                if i.height == height as u64 {
+                    return Ok(to.with(SuccessResponse::new(i.clone())));
+                }
+            }
+        }
+
+        {
+            let last_accepted_state = app.state.last_accepted.read().await;
+            if let Some(ins) = last_accepted_state.as_ref() {
+                if ins.height == height as u64 {
+                    return Ok(to.with(SuccessResponse::new(ins.clone())));
+                }
+            }
+        }
+
+        Err(HTTPError::new(404, "not found".to_string()))
+    }
+
     pub async fn get(
         State(app): State<Arc<IndexerAPI>>,
         Extension(ctx): Extension<Arc<ReqContext>>,
@@ -103,10 +180,10 @@ impl InscriptionAPI {
     pub async fn list_best(
         Extension(ctx): Extension<Arc<ReqContext>>,
         to: PackObject<()>,
-        State(api): State<Arc<IndexerAPI>>,
+        State(app): State<Arc<IndexerAPI>>,
     ) -> Result<PackObject<SuccessResponse<Vec<Inscription>>>, HTTPError> {
         ctx.set("action", "list_best_inscriptions".into()).await;
-        let best_inscriptions_state = api.state.best_inscriptions.read().await;
+        let best_inscriptions_state = app.state.best_inscriptions.read().await;
         Ok(to.with(SuccessResponse::new(
             best_inscriptions_state.iter().cloned().collect(),
         )))
diff --git a/crates/ns-indexer/src/api/mod.rs b/crates/ns-indexer/src/api/mod.rs
index 7ea299b..6f74601 100644
--- a/crates/ns-indexer/src/api/mod.rs
+++ b/crates/ns-indexer/src/api/mod.rs
@@ -58,9 +58,9 @@ pub async fn version(
 
 pub async fn healthz(
     to: PackObject<()>,
-    State(api): State<Arc<IndexerAPI>>,
+    State(app): State<Arc<IndexerAPI>>,
 ) -> Result<PackObject<SuccessResponse<AppHealth>>, HTTPError> {
-    let last_accepted_state = api.state.last_accepted.read().await;
+    let last_accepted_state = app.state.last_accepted.read().await;
     let (block_height, height) = match *last_accepted_state {
         Some(ref last_accepted) => (last_accepted.block_height, last_accepted.height),
         None => (0, 0),
diff --git a/crates/ns-indexer/src/api/name.rs b/crates/ns-indexer/src/api/name.rs
index 4f8498e..20f3292 100644
--- a/crates/ns-indexer/src/api/name.rs
+++ b/crates/ns-indexer/src/api/name.rs
@@ -39,6 +39,33 @@ impl NameAPI {
         Ok(to.with(SuccessResponse::new(name_state.to_index()?)))
     }
 
+    pub async fn get_best(
+        State(app): State<Arc<IndexerAPI>>,
+        Extension(ctx): Extension<Arc<ReqContext>>,
+        to: PackObject<()>,
+        input: Query<QueryName>,
+    ) -> Result<PackObject<SuccessResponse<NameState>>, HTTPError> {
+        input.validate()?;
+
+        let name = input.name.clone();
+        ctx.set_kvs(vec![
+            ("action", "get_best_name_state".into()),
+            ("name", name.clone().into()),
+        ])
+        .await;
+
+        {
+            let best_names_state = app.state.confirming_names.read().await;
+            if let Some(states) = best_names_state.get(&name) {
+                if let Some(state) = states.back() {
+                    return Ok(to.with(SuccessResponse::new(state.0.clone())));
+                }
+            }
+        }
+
+        Err(HTTPError::new(404, "not found".to_string()))
+    }
+
     pub async fn list_by_query(
         State(app): State<Arc<IndexerAPI>>,
         Extension(ctx): Extension<Arc<ReqContext>>,
diff --git a/crates/ns-indexer/src/api/service.rs b/crates/ns-indexer/src/api/service.rs
index f8a0533..6a32bca 100644
--- a/crates/ns-indexer/src/api/service.rs
+++ b/crates/ns-indexer/src/api/service.rs
@@ -44,6 +44,40 @@ impl ServiceAPI {
         Ok(to.with(SuccessResponse::new(service_state.to_index()?)))
     }
 
+    pub async fn get_best(
+        State(app): State<Arc<IndexerAPI>>,
+        Extension(ctx): Extension<Arc<ReqContext>>,
+        to: PackObject<()>,
+        input: Query<QueryName>,
+    ) -> Result<PackObject<SuccessResponse<ServiceState>>, HTTPError> {
+        input.validate()?;
+        if input.code.is_none() {
+            return Err(HTTPError::new(400, "service code is required".to_string()));
+        }
+
+        let name = input.name.clone();
+        let code = input.code.unwrap() as u64;
+        ctx.set_kvs(vec![
+            ("action", "get_best_service_state".into()),
+            ("name", name.clone().into()),
+            ("code", code.into()),
+        ])
+        .await;
+
+        {
+            let best_names_state = app.state.confirming_names.read().await;
+            if let Some(states) = best_names_state.get(&name) {
+                for ss in states.iter().rev() {
+                    if ss.1.code == code {
+                        return Ok(to.with(SuccessResponse::new(ss.1.clone())));
+                    }
+                }
+            }
+        }
+
+        Err(HTTPError::new(404, "not found".to_string()))
+    }
+
     pub async fn list_by_name(
         State(app): State<Arc<IndexerAPI>>,
         Extension(ctx): Extension<Arc<ReqContext>>,
diff --git a/crates/ns-indexer/src/router.rs b/crates/ns-indexer/src/router.rs
index 57aa3a5..627db75 100644
--- a/crates/ns-indexer/src/router.rs
+++ b/crates/ns-indexer/src/router.rs
@@ -21,10 +21,20 @@ pub fn new(state: Arc<api::IndexerAPI>) -> Router {
             "/best",
             Router::new()
                 .route("/inscription", routing::get(api::InscriptionAPI::get_best))
+                .route(
+                    "/inscription/get_last",
+                    routing::get(api::InscriptionAPI::get_last_best),
+                )
+                .route(
+                    "/inscription/get_by_height",
+                    routing::get(api::InscriptionAPI::get_best_by_height),
+                )
                 .route(
                     "/inscription/list",
                     routing::get(api::InscriptionAPI::list_best),
                 )
+                .route("/name", routing::get(api::NameAPI::get_best))
+                .route("/service", routing::get(api::ServiceAPI::get_best))
                 .route("/utxo/list", routing::get(api::UtxoAPI::list)),
         )
         .nest(
diff --git a/crates/ns-inscriber/Cargo.toml b/crates/ns-inscriber/Cargo.toml
index 1a66b70..6860fa6 100644
--- a/crates/ns-inscriber/Cargo.toml
+++ b/crates/ns-inscriber/Cargo.toml
@@ -16,7 +16,7 @@ path = "src/bin/main.rs"
 
 [dependencies]
 ns-protocol = { path = "../ns-protocol", version = "0.6" }
-ns-indexer = { path = "../ns-indexer", version = "0.3" }
+ns-indexer = { path = "../ns-indexer", version = "0.4" }
 anyhow = { workspace = true }
 bytes = { workspace = true }
 base64 = { workspace = true }