diff --git a/README.md b/README.md
index 11cac19..5ab8c1d 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,7 @@
 To start the application, you need to enter the command `npm start`
 
 __Environment variables__:
+- `HOST`     - network listening address 
 - `PORT`     - network listening port 
 - `GETH`     - address of geth rpc server 
 - `ACCOUNTS` - list of private keys separated by commas
diff --git a/index.js b/index.js
index fc4d05c..e3e87bc 100644
--- a/index.js
+++ b/index.js
@@ -3,6 +3,7 @@ const fastify = require('fastify')({ logger: true });
 const web3 = require('./src/web3');
 
 const port = process.env.PORT     || '3000';
+const host = process.env.HOST     || '127.0.0.1';
 const geth = process.env.GETH     || 'http://localhost:8545';
 const accs = process.env.ACCOUNTS || '';
 
@@ -11,7 +12,7 @@ fastify.register(require('./src/deploy'));
 fastify.register(require('./src/read'));
 fastify.register(require('./src/send'));
 
-fastify.listen(port, function (err, address) {
+fastify.listen(port, host, function (err, address) {
   if (err) {
     fastify.log.error(err)
     process.exit(1)
diff --git a/package.json b/package.json
index 759a49b..1da625c 100644
--- a/package.json
+++ b/package.json
@@ -6,8 +6,8 @@
   "scripts": {
     "start": "node index.js",
     "test": "npx mocha",
-    "test:start": "ACCOUNTS=\"0x321f89f3a648166df5af4dd2c808d91ba190b617ee181bc3e94ed1c08801b1ac,0x43332f8bd112b2ed44d97e791bb609ff6f0e04e984d6823360370b6c6285b213\" node index.js",
-    "test:ganache": "npx ganache-cli --account \"0x321f89f3a648166df5af4dd2c808d91ba190b617ee181bc3e94ed1c08801b1ac,1000000000000000000000\" --account \"0x43332f8bd112b2ed44d97e791bb609ff6f0e04e984d6823360370b6c6285b213,1000000000000000000000\""
+    "test:start": "PORT=8889 GETH=http://127.0.0.1:8888 ACCOUNTS=\"0x321f89f3a648166df5af4dd2c808d91ba190b617ee181bc3e94ed1c08801b1ac,0x43332f8bd112b2ed44d97e791bb609ff6f0e04e984d6823360370b6c6285b213\" node index.js",
+    "test:ganache": "npx ganache-cli -p 8888 --account \"0x321f89f3a648166df5af4dd2c808d91ba190b617ee181bc3e94ed1c08801b1ac,1000000000000000000000\" --account \"0x43332f8bd112b2ed44d97e791bb609ff6f0e04e984d6823360370b6c6285b213,1000000000000000000000\""
   },
   "repository": {
     "type": "git",
diff --git a/src/deploy.js b/src/deploy.js
index d289632..5e29b92 100644
--- a/src/deploy.js
+++ b/src/deploy.js
@@ -79,6 +79,7 @@ async function handler(req, reply) {
   reply.send({
     uuid: memory.save({ address: re.contractAddress, bytecode, abi }),
     address: re.contractAddress,
+    abi,
   });
 }
 
diff --git a/test/index.test.js b/test/index.test.js
index 54da727..b66964d 100644
--- a/test/index.test.js
+++ b/test/index.test.js
@@ -3,7 +3,7 @@ const assert = require('assert');
 const fetch = require('node-fetch');
 
 async function post(method, data) {
-  const res = await fetch(`http://localhost:3000/${method}`, {
+  const res = await fetch(`http://localhost:8889/${method}`, {
     method: 'POST',
     headers: {
       'Content-Type': 'application/json',