diff --git a/API.md b/API.md
index 4d6206e92..c1395573b 100644
--- a/API.md
+++ b/API.md
@@ -355,6 +355,7 @@ Get all available addons.
             "logo": "bool",
             "audio": "bool",
             "gpio": "bool",
+            "stdin": "bool",
             "hassio_api": "bool",
             "homeassistant_api": "bool"
         }
@@ -395,6 +396,7 @@ Get all available addons.
     "logo": "bool",
     "hassio_api": "bool",
     "homeassistant_api": "bool",
+    "stdin": "bool",
     "webui": "null|http(s)://[HOST]:port/xy/zx",
     "gpio": "bool",
     "audio": "bool",
@@ -458,6 +460,10 @@ Output is the raw Docker log.
 
 Only supported for local build addons
 
+- POST `/addons/{addon}/stdin`
+
+Write data to add-on stdin
+
 ## Host Control
 
 Communicate over UNIX socket with a host daemon.
diff --git a/hassio/addons/addon.py b/hassio/addons/addon.py
index be6044e7d..3c13ecd8b 100644
--- a/hassio/addons/addon.py
+++ b/hassio/addons/addon.py
@@ -22,7 +22,7 @@ from ..const import (
     STATE_STARTED, STATE_STOPPED, STATE_NONE, ATTR_USER, ATTR_SYSTEM,
     ATTR_STATE, ATTR_TIMEOUT, ATTR_AUTO_UPDATE, ATTR_NETWORK, ATTR_WEBUI,
     ATTR_HASSIO_API, ATTR_AUDIO, ATTR_AUDIO_OUTPUT, ATTR_AUDIO_INPUT,
-    ATTR_GPIO, ATTR_HOMEASSISTANT_API)
+    ATTR_GPIO, ATTR_HOMEASSISTANT_API, ATTR_STDIN)
 from .util import check_installed
 from ..dock.addon import DockerAddon
 from ..tools import write_json_file, read_json_file
@@ -270,6 +270,11 @@ class Addon(object):
         """Return True if the add-on access to Home-Assistant api proxy."""
         return self._mesh[ATTR_HOMEASSISTANT_API]
 
+    @property
+    def with_stdin(self):
+        """Return True if the add-on access use stdin input."""
+        return self._mesh[ATTR_STDIN]
+
     @property
     def with_gpio(self):
         """Return True if the add-on access to gpio interface."""
@@ -561,6 +566,18 @@ class Addon(object):
             await self.docker.run()
         return True
 
+    @check_installed
+    async def write_stdin(self, data):
+        """Write data to add-on stdin.
+
+        Return a coroutine.
+        """
+        if not self.with_stdin:
+            _LOGGER.error("Add-on don't support write to stdin!")
+            return False
+
+        return await self.docker.write_stdin(data)
+
     @check_installed
     async def snapshot(self, tar_file):
         """Snapshot a state of a addon."""
diff --git a/hassio/addons/validate.py b/hassio/addons/validate.py
index 56abfe4a7..f44f9571e 100644
--- a/hassio/addons/validate.py
+++ b/hassio/addons/validate.py
@@ -14,7 +14,7 @@ from ..const import (
     ATTR_LOCATON, ATTR_REPOSITORY, ATTR_TIMEOUT, ATTR_NETWORK,
     ATTR_AUTO_UPDATE, ATTR_WEBUI, ATTR_AUDIO, ATTR_AUDIO_INPUT,
     ATTR_AUDIO_OUTPUT, ATTR_HASSIO_API, ATTR_BUILD_FROM, ATTR_SQUASH,
-    ATTR_ARGS, ATTR_GPIO, ATTR_HOMEASSISTANT_API)
+    ATTR_ARGS, ATTR_GPIO, ATTR_HOMEASSISTANT_API, ATTR_STDIN)
 from ..validate import NETWORK_PORT, DOCKER_PORTS, ALSA_CHANNEL
 
 
@@ -98,6 +98,7 @@ SCHEMA_ADDON_CONFIG = vol.Schema({
     vol.Optional(ATTR_GPIO, default=False): vol.Boolean(),
     vol.Optional(ATTR_HASSIO_API, default=False): vol.Boolean(),
     vol.Optional(ATTR_HOMEASSISTANT_API, default=False): vol.Boolean(),
+    vol.Optional(ATTR_STDIN, default=False): vol.Boolean(),
     vol.Required(ATTR_OPTIONS): dict,
     vol.Required(ATTR_SCHEMA): vol.Any(vol.Schema({
         vol.Coerce(str): vol.Any(SCHEMA_ELEMENT, [
diff --git a/hassio/api/__init__.py b/hassio/api/__init__.py
index 627ca7eac..449974ef7 100644
--- a/hassio/api/__init__.py
+++ b/hassio/api/__init__.py
@@ -104,6 +104,7 @@ class RestAPI(object):
             '/addons/{addon}/rebuild', api_addons.rebuild)
         self.webapp.router.add_get('/addons/{addon}/logs', api_addons.logs)
         self.webapp.router.add_get('/addons/{addon}/logo', api_addons.logo)
+        self.webapp.router.add_post('/addons/{addon}/stdin', api_addons.stdin)
 
     def register_security(self):
         """Register security function."""
diff --git a/hassio/api/addons.py b/hassio/api/addons.py
index 7126b66f6..24fb7b77a 100644
--- a/hassio/api/addons.py
+++ b/hassio/api/addons.py
@@ -13,7 +13,7 @@ from ..const import (
     ATTR_SOURCE, ATTR_REPOSITORIES, ATTR_ADDONS, ATTR_ARCH, ATTR_MAINTAINER,
     ATTR_INSTALLED, ATTR_LOGO, ATTR_WEBUI, ATTR_DEVICES, ATTR_PRIVILEGED,
     ATTR_AUDIO, ATTR_AUDIO_INPUT, ATTR_AUDIO_OUTPUT, ATTR_HASSIO_API,
-    ATTR_GPIO, ATTR_HOMEASSISTANT_API, BOOT_AUTO, BOOT_MANUAL,
+    ATTR_GPIO, ATTR_HOMEASSISTANT_API, ATTR_STDIN, BOOT_AUTO, BOOT_MANUAL,
     CONTENT_TYPE_PNG, CONTENT_TYPE_BINARY)
 from ..validate import DOCKER_PORTS
 
@@ -78,6 +78,7 @@ class APIAddons(object):
                 ATTR_DEVICES: self._pretty_devices(addon),
                 ATTR_URL: addon.url,
                 ATTR_LOGO: addon.with_logo,
+                ATTR_STDIN: addon.with_stdin,
                 ATTR_HASSIO_API: addon.access_hassio_api,
                 ATTR_HOMEASSISTANT_API: addon.access_homeassistant_api,
                 ATTR_AUDIO: addon.with_audio,
@@ -129,6 +130,7 @@ class APIAddons(object):
             ATTR_DEVICES: self._pretty_devices(addon),
             ATTR_LOGO: addon.with_logo,
             ATTR_WEBUI: addon.webui,
+            ATTR_STDIN: addon.with_stdin,
             ATTR_HASSIO_API: addon.access_hassio_api,
             ATTR_HOMEASSISTANT_API: addon.access_homeassistant_api,
             ATTR_GPIO: addon.with_gpio,
@@ -242,3 +244,13 @@ class APIAddons(object):
 
         with addon.path_logo.open('rb') as png:
             return png.read()
+
+    @api_process
+    async def stdin(self, request):
+        """Write to stdin of addon."""
+        addon = self._extract_addon(request)
+        if not addon.with_stdin:
+            raise RuntimeError("STDIN not supported by addons")
+
+        data = await request.read()
+        return asyncio.shield(addon.write_stdin(data), loop=self.loop)
diff --git a/hassio/const.py b/hassio/const.py
index e50f1209d..e055ea3f0 100644
--- a/hassio/const.py
+++ b/hassio/const.py
@@ -86,6 +86,7 @@ ATTR_STATE = 'state'
 ATTR_SCHEMA = 'schema'
 ATTR_IMAGE = 'image'
 ATTR_LOGO = 'logo'
+ATTR_STDIN = 'stdin'
 ATTR_ADDONS_REPOSITORIES = 'addons_repositories'
 ATTR_REPOSITORY = 'repository'
 ATTR_REPOSITORIES = 'repositories'
diff --git a/hassio/dock/addon.py b/hassio/dock/addon.py
index b320ffa89..2c63fe817 100644
--- a/hassio/dock/addon.py
+++ b/hassio/dock/addon.py
@@ -1,5 +1,6 @@
 """Init file for HassIO addon docker object."""
 import logging
+import os
 
 import docker
 import requests
@@ -171,6 +172,7 @@ class DockerAddon(DockerInterface):
             name=self.name,
             hostname=self.hostname,
             detach=True,
+            stdin_open=self.addon.with_stdin,
             network_mode=self.network_mode,
             ports=self.ports,
             extra_hosts=self.network_mapping,
@@ -278,3 +280,35 @@ class DockerAddon(DockerInterface):
         """
         self._stop()
         return self._run()
+
+    @docker_process
+    def write_stdin(self, data):
+        """Write to add-on stdin."""
+        return self.loop.run_in_executor(None, self._write_stdin, data)
+
+    def _write_stdin(self, data):
+        """Write to add-on stdin.
+
+        Need run inside executor.
+        """
+        if not self._is_running():
+            return False
+
+        try:
+            # load needed docker objects
+            container = self.docker.containers.get(self.name)
+            socket = container.attach_socket(params={'stdin': 1, 'stream': 1})
+        except docker.errors.DockerException as err:
+            _LOGGER.error("Can't attach to %s stdin -> %s", self.name, err)
+            return False
+
+        try:
+            # write to stdin
+            data += b"\n"
+            os.write(socket.fileno(), data)
+            socket.close()
+        except OSError as err:
+            _LOGGER.error("Can't write to %s stdin -> %s", self.name, err)
+            return False
+
+        return True