diff --git a/Cargo.lock b/Cargo.lock
index 430909747..dd38ba9b1 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2135,6 +2135,8 @@ dependencies = [
  "jsonrpc-http-server 10.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "reqwest 0.9.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.89 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.89 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.39 (registry+https://github.com/rust-lang/crates.io-index)",
  "solana-logger 0.13.0",
  "solana-metrics 0.13.0",
diff --git a/client/Cargo.toml b/client/Cargo.toml
index 608f11df3..450b80532 100644
--- a/client/Cargo.toml
+++ b/client/Cargo.toml
@@ -12,7 +12,10 @@ edition = "2018"
 bincode = "1.1.2"
 bs58 = "0.2.0"
 log = "0.4.2"
+jsonrpc-core = "10.1.0"
 reqwest = "0.9.11"
+serde = "1.0.89"
+serde_derive = "1.0.88"
 serde_json = "1.0.39"
 solana-metrics = { path = "../metrics", version = "0.13.0" }
 solana-netutil = { path = "../netutil", version = "0.13.0" }
diff --git a/client/src/lib.rs b/client/src/lib.rs
index 4ba84f1f7..e64b74af0 100644
--- a/client/src/lib.rs
+++ b/client/src/lib.rs
@@ -1,4 +1,8 @@
 pub mod client;
 pub mod rpc_mock;
 pub mod rpc_request;
+pub mod rpc_signature_status;
 pub mod thin_client;
+
+#[macro_use]
+extern crate serde_derive;
diff --git a/core/src/rpc_status.rs b/client/src/rpc_signature_status.rs
similarity index 92%
rename from core/src/rpc_status.rs
rename to client/src/rpc_signature_status.rs
index df21edd9f..7cbd160a8 100644
--- a/core/src/rpc_status.rs
+++ b/client/src/rpc_signature_status.rs
@@ -1,4 +1,4 @@
-//! The `rpc_status` module defines transaction status codes
+//! The `rpc_signature_status` module defines transaction status codes
 
 use jsonrpc_core::{Error, Result};
 use std::str::FromStr;
diff --git a/core/src/cluster_info.rs b/core/src/cluster_info.rs
index e11151a1a..3d10b23b5 100644
--- a/core/src/cluster_info.rs
+++ b/core/src/cluster_info.rs
@@ -21,7 +21,6 @@ use crate::crds_gossip_pull::CRDS_GOSSIP_PULL_CRDS_TIMEOUT_MS;
 use crate::crds_value::{CrdsValue, CrdsValueLabel, Vote};
 use crate::packet::{to_shared_blob, Blob, SharedBlob, BLOB_SIZE};
 use crate::result::Result;
-use crate::rpc_service::RPC_PORT;
 use crate::staking_utils;
 use crate::streamer::{BlobReceiver, BlobSender};
 use bincode::{deserialize, serialize};
@@ -35,6 +34,7 @@ use solana_netutil::{bind_in_range, bind_to, find_available_port_in_range, multi
 use solana_runtime::bloom::Bloom;
 use solana_sdk::hash::Hash;
 use solana_sdk::pubkey::Pubkey;
+use solana_sdk::rpc_port;
 use solana_sdk::signature::{Keypair, KeypairUtil, Signable, Signature};
 use solana_sdk::timing::{duration_as_ms, timestamp};
 use solana_sdk::transaction::Transaction;
@@ -1436,8 +1436,8 @@ impl Node {
             SocketAddr::new(gossip_addr.ip(), tpu_port),
             SocketAddr::new(gossip_addr.ip(), tpu_via_blobs_port),
             SocketAddr::new(gossip_addr.ip(), storage_port),
-            SocketAddr::new(gossip_addr.ip(), RPC_PORT),
-            SocketAddr::new(gossip_addr.ip(), RPC_PORT + 1),
+            SocketAddr::new(gossip_addr.ip(), rpc_port::DEFAULT_RPC_PORT),
+            SocketAddr::new(gossip_addr.ip(), rpc_port::DEFAULT_RPC_PUBSUB_PORT),
             0,
         );
         trace!("new ContactInfo: {:?}", info);
diff --git a/core/src/contact_info.rs b/core/src/contact_info.rs
index 1fc785dc2..33401378b 100644
--- a/core/src/contact_info.rs
+++ b/core/src/contact_info.rs
@@ -1,6 +1,6 @@
-use crate::rpc_service::RPC_PORT;
 use bincode::serialize;
 use solana_sdk::pubkey::Pubkey;
+use solana_sdk::rpc_port;
 use solana_sdk::signature::{Keypair, KeypairUtil, Signable, Signature};
 use solana_sdk::timing::timestamp;
 use std::cmp::{Ord, Ordering, PartialEq, PartialOrd};
@@ -151,8 +151,8 @@ impl ContactInfo {
         let gossip_addr = Self::next_port(&bind_addr, 1);
         let tvu_addr = Self::next_port(&bind_addr, 2);
         let tpu_via_blobs_addr = Self::next_port(&bind_addr, 3);
-        let rpc_addr = SocketAddr::new(bind_addr.ip(), RPC_PORT);
-        let rpc_pubsub_addr = SocketAddr::new(bind_addr.ip(), RPC_PORT + 1);
+        let rpc_addr = SocketAddr::new(bind_addr.ip(), rpc_port::DEFAULT_RPC_PORT);
+        let rpc_pubsub_addr = SocketAddr::new(bind_addr.ip(), rpc_port::DEFAULT_RPC_PUBSUB_PORT);
         Self::new(
             pubkey,
             gossip_addr,
diff --git a/core/src/lib.rs b/core/src/lib.rs
index df7e08485..b69530f89 100644
--- a/core/src/lib.rs
+++ b/core/src/lib.rs
@@ -56,7 +56,6 @@ pub mod rpc;
 pub mod rpc_pubsub;
 pub mod rpc_pubsub_service;
 pub mod rpc_service;
-pub mod rpc_status;
 pub mod rpc_subscriptions;
 pub mod service;
 pub mod sigverify;
diff --git a/core/src/rpc.rs b/core/src/rpc.rs
index 11c9ead4d..9c1a23400 100644
--- a/core/src/rpc.rs
+++ b/core/src/rpc.rs
@@ -2,12 +2,12 @@
 
 use crate::cluster_info::ClusterInfo;
 use crate::packet::PACKET_DATA_SIZE;
-use crate::rpc_status::RpcSignatureStatus;
 use crate::storage_stage::StorageState;
 use bincode::{deserialize, serialize};
 use bs58;
 use jsonrpc_core::{Error, ErrorCode, Metadata, Result};
 use jsonrpc_derive::rpc;
+use solana_client::rpc_signature_status::RpcSignatureStatus;
 use solana_drone::drone::request_airdrop_transaction;
 use solana_runtime::bank::{self, Bank};
 use solana_sdk::account::Account;
diff --git a/core/src/rpc_pubsub.rs b/core/src/rpc_pubsub.rs
index 3cb9d67b6..5ac982220 100644
--- a/core/src/rpc_pubsub.rs
+++ b/core/src/rpc_pubsub.rs
@@ -1,12 +1,12 @@
 //! The `pubsub` module implements a threaded subscription service on client RPC request
 
-use crate::rpc_status::RpcSignatureStatus;
 use crate::rpc_subscriptions::RpcSubscriptions;
 use bs58;
 use jsonrpc_core::{Error, ErrorCode, Result};
 use jsonrpc_derive::rpc;
 use jsonrpc_pubsub::typed::Subscriber;
 use jsonrpc_pubsub::{Session, SubscriptionId};
+use solana_client::rpc_signature_status::RpcSignatureStatus;
 use solana_sdk::account::Account;
 use solana_sdk::pubkey::Pubkey;
 use solana_sdk::signature::Signature;
diff --git a/core/src/rpc_service.rs b/core/src/rpc_service.rs
index 519295ab4..4d50dee16 100644
--- a/core/src/rpc_service.rs
+++ b/core/src/rpc_service.rs
@@ -13,8 +13,6 @@ use std::sync::{Arc, RwLock};
 use std::thread::{self, sleep, Builder, JoinHandle};
 use std::time::Duration;
 
-pub const RPC_PORT: u16 = 8899;
-
 pub struct JsonRpcService {
     thread_hdl: JoinHandle<()>,
     pub request_processor: Arc<RwLock<JsonRpcRequestProcessor>>, // Used only by tests...
diff --git a/core/src/rpc_subscriptions.rs b/core/src/rpc_subscriptions.rs
index e30beba17..21eee98a9 100644
--- a/core/src/rpc_subscriptions.rs
+++ b/core/src/rpc_subscriptions.rs
@@ -1,11 +1,11 @@
 //! The `pubsub` module implements a threaded subscription service on client RPC request
 
-use crate::rpc_status::RpcSignatureStatus;
 use bs58;
 use core::hash::Hash;
 use jsonrpc_core::futures::Future;
 use jsonrpc_pubsub::typed::Sink;
 use jsonrpc_pubsub::SubscriptionId;
+use solana_client::rpc_signature_status::RpcSignatureStatus;
 use solana_runtime::bank::{self, Bank};
 use solana_sdk::account::Account;
 use solana_sdk::pubkey::Pubkey;
diff --git a/sdk/src/lib.rs b/sdk/src/lib.rs
index 9b671a1a9..df1ccea27 100644
--- a/sdk/src/lib.rs
+++ b/sdk/src/lib.rs
@@ -8,6 +8,7 @@ pub mod native_loader;
 pub mod native_program;
 pub mod packet;
 pub mod pubkey;
+pub mod rpc_port;
 pub mod shortvec;
 pub mod signature;
 pub mod system_instruction;
diff --git a/sdk/src/rpc_port.rs b/sdk/src/rpc_port.rs
new file mode 100644
index 000000000..531be001b
--- /dev/null
+++ b/sdk/src/rpc_port.rs
@@ -0,0 +1,5 @@
+/// Default port number for JSON RPC API
+pub const DEFAULT_RPC_PORT: u16 = 8899;
+
+/// Default port number for JSON RPC pubsub
+pub const DEFAULT_RPC_PUBSUB_PORT: u16 = 8900;
diff --git a/wallet/Cargo.toml b/wallet/Cargo.toml
index e3a85044c..7e37e541c 100644
--- a/wallet/Cargo.toml
+++ b/wallet/Cargo.toml
@@ -16,7 +16,6 @@ chrono = { version = "0.4.0", features = ["serde"] }
 dirs = "1.0.5"
 log = "0.4.2"
 serde_json = "1.0.39"
-solana = { path = "../core", version = "0.13.0" }
 solana-budget-api = { path = "../programs/budget_api", version = "0.13.0" }
 solana-client = { path = "../client", version = "0.13.0" }
 solana-drone = { path = "../drone", version = "0.13.0" }
@@ -27,6 +26,7 @@ solana-vote-signer = { path = "../vote-signer", version = "0.13.0" }
 
 [dev-dependencies]
 solana-budget-program = { path = "../programs/budget", version = "0.13.0" }
+solana = { path = "../core", version = "0.13.0" }
 
 [features]
 cuda = ["solana/cuda"]
diff --git a/wallet/src/wallet.rs b/wallet/src/wallet.rs
index d87f73cdc..cbee541d9 100644
--- a/wallet/src/wallet.rs
+++ b/wallet/src/wallet.rs
@@ -5,8 +5,6 @@ use clap::ArgMatches;
 use log::*;
 use serde_json;
 use serde_json::json;
-use solana::rpc_service::RPC_PORT;
-use solana::rpc_status::RpcSignatureStatus;
 use solana_budget_api;
 use solana_budget_api::budget_transaction::BudgetTransaction;
 #[cfg(test)]
@@ -14,6 +12,7 @@ use solana_client::rpc_mock::{request_airdrop_transaction, MockRpcClient as RpcC
 #[cfg(not(test))]
 use solana_client::rpc_request::RpcClient;
 use solana_client::rpc_request::{get_rpc_request_str, RpcRequest};
+use solana_client::rpc_signature_status::RpcSignatureStatus;
 #[cfg(not(test))]
 use solana_drone::drone::request_airdrop_transaction;
 use solana_drone::drone::DRONE_PORT;
@@ -21,6 +20,7 @@ use solana_sdk::bpf_loader;
 use solana_sdk::hash::Hash;
 use solana_sdk::loader_transaction::LoaderTransaction;
 use solana_sdk::pubkey::Pubkey;
+use solana_sdk::rpc_port::DEFAULT_RPC_PORT;
 use solana_sdk::signature::{Keypair, KeypairUtil, Signature};
 use solana_sdk::system_transaction::SystemTransaction;
 use solana_sdk::timing::{DEFAULT_TICKS_PER_SLOT, NUM_TICKS_PER_SECOND};
@@ -111,7 +111,7 @@ impl Default for WalletConfig {
             id: Keypair::new(),
             rpc_client: None,
             rpc_host: None,
-            rpc_port: RPC_PORT,
+            rpc_port: DEFAULT_RPC_PORT,
             rpc_tls: false,
         }
     }