diff --git a/ethcore/src/views.rs b/ethcore/src/views.rs
index e1c704625..5117309c3 100644
--- a/ethcore/src/views.rs
+++ b/ethcore/src/views.rs
@@ -139,6 +139,11 @@ impl<'a> BlockView<'a> {
 		self.rlp.val_at(1)
 	}
 
+	/// Return number of transactions in given block, without deserializing them.
+	pub fn transactions_count(&self) -> usize {
+		self.rlp.at(1).iter().count()
+	}
+
 	/// Return List of transactions in given block.
 	pub fn transaction_views(&self) -> Vec<TransactionView> {
 		self.rlp.at(1).iter().map(TransactionView::new_from_rlp).collect()
@@ -154,6 +159,11 @@ impl<'a> BlockView<'a> {
 		self.rlp.val_at(2)
 	}
 
+	/// Return number of uncles in given block, without deserializing them.
+	pub fn uncles_count(&self) -> usize {
+		self.rlp.at(2).iter().count()
+	}
+
 	/// Return List of transactions in given block.
 	pub fn uncle_views(&self) -> Vec<HeaderView> {
 		self.rlp.at(2).iter().map(HeaderView::new_from_rlp).collect()
diff --git a/rpc/src/v1/impls/eth.rs b/rpc/src/v1/impls/eth.rs
index 46718601b..c1cd327df 100644
--- a/rpc/src/v1/impls/eth.rs
+++ b/rpc/src/v1/impls/eth.rs
@@ -7,7 +7,7 @@ use util::sha3::*;
 use ethcore::client::*;
 use ethcore::views::*;
 use v1::traits::{Eth, EthFilter};
-use v1::types::Block;
+use v1::types::{Block, SyncStatus};
 
 /// Eth rpc implementation.
 pub struct EthClient {
@@ -24,6 +24,7 @@ impl EthClient {
 }
 
 impl Eth for EthClient {
+	// TODO: do not hardcode protocol version
 	fn protocol_version(&self, params: Params) -> Result<Value, Error> {
 		match params {
 			Params::None => Ok(Value::U64(63)),
@@ -31,6 +32,15 @@ impl Eth for EthClient {
 		}
 	}
 
+	// TODO: do no hardcode default sync status
+	fn syncing(&self, params: Params) -> Result<Value, Error> {
+		match params {
+			Params::None => to_value(&SyncStatus::default()),
+			_ => Err(Error::invalid_params())
+		}
+	}
+
+	// TODO: do not hardcode author.
 	fn author(&self, params: Params) -> Result<Value, Error> {
 		match params {
 			Params::None => to_value(&Address::new()),
@@ -38,6 +48,23 @@ impl Eth for EthClient {
 		}
 	}
 
+	// TODO: return real value of mining once it's implemented.
+	fn is_mining(&self, params: Params) -> Result<Value, Error> {
+		match params {
+			Params::None => Ok(Value::Bool(false)),
+			_ => Err(Error::invalid_params())
+		}
+	}
+
+	// TODO: return real hashrate once we have mining
+	fn hashrate(&self, params: Params) -> Result<Value, Error> {
+		match params {
+			Params::None => Ok(Value::U64(0)),
+			_ => Err(Error::invalid_params())
+		}
+	}
+
+	// TODO: do not hardode gas_price
 	fn gas_price(&self, params: Params) -> Result<Value, Error> {
 		match params {
 			Params::None => Ok(Value::U64(0)),
@@ -52,24 +79,26 @@ impl Eth for EthClient {
 		}
 	}
 
-	fn is_mining(&self, params: Params) -> Result<Value, Error> {
-		match params {
-			Params::None => Ok(Value::Bool(false)),
-			_ => Err(Error::invalid_params())
+	fn block_transaction_count(&self, params: Params) -> Result<Value, Error> {
+		match from_params::<H256>(params) {
+			Ok(hash) => match self.client.block(&hash) {
+				Some(bytes) => to_value(&BlockView::new(&bytes).transactions_count()),
+				None => Ok(Value::Null)
+			},
+			Err(err) => Err(err)
 		}
 	}
 
-	fn hashrate(&self, params: Params) -> Result<Value, Error> {
-		match params {
-			Params::None => Ok(Value::U64(0)),
-			_ => Err(Error::invalid_params())
+	fn block_uncles_count(&self, params: Params) -> Result<Value, Error> {
+		match from_params::<H256>(params) {
+			Ok(hash) => match self.client.block(&hash) {
+				Some(bytes) => to_value(&BlockView::new(&bytes).uncles_count()),
+				None => Ok(Value::Null)
+			},
+			Err(err) => Err(err)
 		}
 	}
 
-	fn block_transaction_count(&self, _: Params) -> Result<Value, Error> {
-		Ok(Value::U64(0))
-	}
-
 	fn block(&self, params: Params) -> Result<Value, Error> {
 		match from_params::<(H256, bool)>(params) {
 			Ok((hash, _include_txs)) => match (self.client.block_header(&hash), self.client.block_total_difficulty(&hash)) {
diff --git a/rpc/src/v1/traits/eth.rs b/rpc/src/v1/traits/eth.rs
index 3dcdfdf05..e9134d84a 100644
--- a/rpc/src/v1/traits/eth.rs
+++ b/rpc/src/v1/traits/eth.rs
@@ -7,6 +7,9 @@ pub trait Eth: Sized + Send + Sync + 'static {
 	/// Returns protocol version.
 	fn protocol_version(&self, _: Params) -> Result<Value, Error> { rpc_unimplemented!() }
 
+	/// Returns an object with data about the sync status or false. (wtf?)
+	fn syncing(&self, _: Params) -> Result<Value, Error> { rpc_unimplemented!() }
+
 	/// Returns the number of hashes per second that the node is mining with.
 	fn hashrate(&self, _: Params) -> Result<Value, Error> { rpc_unimplemented!() }
 
@@ -92,6 +95,7 @@ pub trait Eth: Sized + Send + Sync + 'static {
 	fn to_delegate(self) -> IoDelegate<Self> {
 		let mut delegate = IoDelegate::new(Arc::new(self));
 		delegate.add_method("eth_protocolVersion", Eth::protocol_version);
+		delegate.add_method("eth_syncing", Eth::syncing);
 		delegate.add_method("eth_hashrate", Eth::hashrate);
 		delegate.add_method("eth_coinbase", Eth::author);
 		delegate.add_method("eth_mining", Eth::is_mining);
diff --git a/rpc/src/v1/types/mod.rs b/rpc/src/v1/types/mod.rs
index 7be32e84d..b0ffff2ae 100644
--- a/rpc/src/v1/types/mod.rs
+++ b/rpc/src/v1/types/mod.rs
@@ -1,3 +1,5 @@
 mod block;
+mod sync;
 
 pub use self::block::Block;
+pub use self::sync::SyncStatus;
diff --git a/rpc/src/v1/types/sync.rs b/rpc/src/v1/types/sync.rs
new file mode 100644
index 000000000..b13b7167a
--- /dev/null
+++ b/rpc/src/v1/types/sync.rs
@@ -0,0 +1,11 @@
+use util::hash::*;
+
+#[derive(Default, Debug, Serialize)]
+pub struct SyncStatus {
+	#[serde(rename="startingBlock")]
+	pub starting_block: H256,
+	#[serde(rename="currentBlock")]
+	pub current_block: H256,
+	#[serde(rename="highestBlock")]
+	pub highest_block: H256,
+}