diff --git a/rai/core_test/interface.cpp b/rai/core_test/interface.cpp
index f04735fe..cf64a673 100644
--- a/rai/core_test/interface.cpp
+++ b/rai/core_test/interface.cpp
@@ -5,6 +5,7 @@
 #include <rai/lib/blocks.hpp>
 #include <rai/lib/numbers.hpp>
 #include <rai/lib/interface.h>
+#include <rai/lib/work.hpp>
 
 TEST (interface, xrb_uint256_to_string)
 {
@@ -98,3 +99,21 @@ TEST (interface, sign_transaction)
 	ASSERT_FALSE (rai::validate_message (pub, send.hash (), send1->signature));
 	free (transaction);
 }
+
+TEST (interface, work_transaction)
+{
+	rai::raw_key key;
+	xrb_generate_random (key.data.bytes.data ());
+	rai::uint256_union pub;
+	xrb_key_account (key.data.bytes.data (), pub.bytes.data ());
+	rai::send_block send (1, 0, 0, key, pub, 0);
+	auto transaction (xrb_work_transaction (send.to_json ().c_str ()));
+	boost::property_tree::ptree block_l;
+	std::string transaction_l (transaction);
+	std::stringstream block_stream (transaction_l);
+	boost::property_tree::read_json (block_stream, block_l);
+	auto block (rai::deserialize_block_json (block_l));
+	ASSERT_NE (nullptr, block);
+	ASSERT_FALSE (rai::work_validate (*block));
+	free (transaction);
+}
diff --git a/rai/lib/interface.cpp b/rai/lib/interface.cpp
index d966e688..cb2c802c 100644
--- a/rai/lib/interface.cpp
+++ b/rai/lib/interface.cpp
@@ -10,6 +10,7 @@
 
 #include <rai/lib/blocks.hpp>
 #include <rai/lib/numbers.hpp>
+#include <rai/lib/work.hpp>
 
 #include <cstring>
 
@@ -96,6 +97,26 @@ char * xrb_sign_transaction (const char * transaction, const xrb_uint256 private
 	return result;
 }
 
+char * xrb_work_transaction (const char * transaction)
+{
+	char * result (nullptr);
+	boost::property_tree::ptree block_l;
+	std::string transaction_l (transaction);
+	std::stringstream block_stream (transaction_l);
+	boost::property_tree::read_json (block_stream, block_l);
+	auto block (rai::deserialize_block_json (block_l));
+	if (block != nullptr)
+	{
+		rai::work_pool pool (std::thread::hardware_concurrency ());
+		auto work (pool.generate (block->root ()));
+		block->block_work_set (work);
+		auto json (block->to_json ());
+		result = reinterpret_cast <char *> (malloc (json.size () + 1));
+		strncpy (result, json.c_str (), json.size () + 1);
+	}
+	return result;
+}
+
 #include <ed25519-donna/ed25519-hash-custom.h>
 void ed25519_randombytes_unsafe (void * out, size_t outlen)
 {
diff --git a/rai/lib/interface.h b/rai/lib/interface.h
index e7aa03ef..283454ce 100644
--- a/rai/lib/interface.h
+++ b/rai/lib/interface.h
@@ -36,6 +36,8 @@ void xrb_key_account (xrb_uint256 key, xrb_uint256 pub);
 
 // Sign 'transaction' using 'private_key' and write to 'signature'
 char * xrb_sign_transaction (const char * transaction, const xrb_uint256 private_key);
+// Generate work for 'transaction'
+char * xrb_work_transaction (const char * transaction);
 
 #if __cplusplus
 } // extern "C"