diff --git a/README.md b/README.md
index 96b29ad3..e2a7a1d9 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,7 @@ You can find some package documentation below:
 | --- | --- |
 | [@bnb-chain/greenfield-js-sdk](./packages/chain-sdk/README.md) | A client library for Greenfield Chain |
 | [@bnb-chain/greenfiled-file-handle](./packages/file-handle/README.md) | WASM module that handle file, such as `checksums` |
+| [@bnb-chain/greenfield-zk-crypto](./packages/zk-crypto/README.md) | WASM module about sign crypto |
 
 ## Document
 [Document](./packages/chain-sdk/README.md)
diff --git a/packages/chain-sdk/README.md b/packages/chain-sdk/README.md
index c5294e54..6a95e682 100644
--- a/packages/chain-sdk/README.md
+++ b/packages/chain-sdk/README.md
@@ -16,7 +16,7 @@ const client = Client.create(GRPC_URL, GREEN_CHAIN_ID);
 
 Apis include transactions and queries.
 
-### Tx
+### Tx Client
 
 #### 1. Tx construction
 
@@ -82,7 +82,7 @@ const broadcastRes = await transferTx.broadcast({
 });
 ```
 
-### Query
+### Query Client
 
 ```js
 // get account info
@@ -101,13 +101,8 @@ more API:
 * [payment](./src/api/payment.ts)
 * [sp](./src/api/sp.ts)
 
+### Storage Provider Client
+
+> https://docs.bnbchain.org/greenfield-docs/docs/api/storgae-provider-rest
 
-<!-- 
-### putBucketPolicy
 
-```js
-// `resource` params
-const resource = newBucketGRN(bucketName);
-msg.resource = GRNToString(resource);
-```
- -->