diff --git a/packages/rpc/__tests__/ckb-rpc-helpers.js b/packages/rpc/__tests__/ckb-rpc-helpers.js
index 85607d63..78797b8a 100644
--- a/packages/rpc/__tests__/ckb-rpc-helpers.js
+++ b/packages/rpc/__tests__/ckb-rpc-helpers.js
@@ -33,7 +33,7 @@ describe('ckb-rpc settings and helpers', () => {
   })
 
   it('has 47 basic rpc', () => {
-    expect(Object.values(rpc)).toHaveLength(47)
+    expect(Object.values(rpc)).toHaveLength(48)
   })
 
   it('set node url to http://test.localhost:8114', () => {
diff --git a/packages/rpc/src/Base/index.ts b/packages/rpc/src/Base/index.ts
index 4af67a2d..b5ca6bca 100644
--- a/packages/rpc/src/Base/index.ts
+++ b/packages/rpc/src/Base/index.ts
@@ -536,6 +536,11 @@ export interface Base {
   ) => Promise<CKBComponents.FeeRateStatistics>;
 
   getDeploymentsInfo: () => Promise<CKBComponents.DeploymentsInfo>;
+
+  testTxPoolAccept: (
+    tx: CKBComponents.RawTransaction,
+    outputsValidator?: CKBComponents.OutputsValidator
+  ) => Promise<CKBComponents.EntryCompleted>;
 }
 
 export class Base {
diff --git a/packages/rpc/src/Base/pool.ts b/packages/rpc/src/Base/pool.ts
index a5d9a336..caa8e2f1 100644
--- a/packages/rpc/src/Base/pool.ts
+++ b/packages/rpc/src/Base/pool.ts
@@ -27,4 +27,12 @@ export default {
     paramsFormatters: [],
     resultFormatters: resultFmts.toRawTxPool,
   },
+
+  testTxPoolAccept: {
+    method: "test_tx_pool_accept",
+    paramsFormatters: [
+      paramsFmts.toRawTransaction,
+      paramsFmts.toOutputsValidator,
+    ],
+  },
 };
diff --git a/packages/rpc/src/resultFormatter.ts b/packages/rpc/src/resultFormatter.ts
index 5bde78d2..d89c583c 100644
--- a/packages/rpc/src/resultFormatter.ts
+++ b/packages/rpc/src/resultFormatter.ts
@@ -139,7 +139,10 @@ const toTip = (tip: RPC.Tip): CKBComponents.Tip => ({
 
 function isBlockWithCycles(value: unknown): value is BlockWithCycles {
   return (
-    !!value && typeof value === "object" && "block" in value && "cycles" in value
+    !!value &&
+    typeof value === "object" &&
+    "block" in value &&
+    "cycles" in value
   );
 }
 
diff --git a/packages/rpc/src/types/api.ts b/packages/rpc/src/types/api.ts
index 596cd89d..1e066e14 100644
--- a/packages/rpc/src/types/api.ts
+++ b/packages/rpc/src/types/api.ts
@@ -38,7 +38,7 @@ export namespace CKBComponents {
     Proposed = "proposed",
     Committed = "committed",
   }
-
+  export type Cycle = string;
   export type ScriptHashType = api.HashType;
 
   export type DepType = "code" | "depGroup";
@@ -319,6 +319,12 @@ export namespace CKBComponents {
   }
 
   export type DeploymentPos = api.DeploymentPos;
+
+  export interface EntryCompleted {
+    cycles: Cycle;
+    /// Cached tx fee
+    fee: Capacity;
+  }
   export type DeploymentState = api.DeploymentState;
   export type DeploymentInfo = api.DeploymentInfo;
   export type DeploymentsInfo = api.DeploymentsInfo;
diff --git a/packages/rpc/src/types/rpc.ts b/packages/rpc/src/types/rpc.ts
index a1913902..2074af2a 100644
--- a/packages/rpc/src/types/rpc.ts
+++ b/packages/rpc/src/types/rpc.ts
@@ -549,4 +549,9 @@ export namespace RPC {
     is_initial_block_download: boolean;
     alerts: Vec<AlertMessage>;
   }
+
+  export interface EntryCompleted {
+    cycles: Cycles;
+    fee: Capacity;
+  }
 }