diff --git a/mimic3-http/MANIFEST.in b/mimic3-http/MANIFEST.in
index fdd79b2..9c35dc9 100644
--- a/mimic3-http/MANIFEST.in
+++ b/mimic3-http/MANIFEST.in
@@ -3,3 +3,4 @@ include requirements_dev.txt
 include LICENSE
 include README.md
 include mimic3_http/VERSION
+include mimic3_http/swagger.yaml
diff --git a/mimic3-http/mimic3_http/app.py b/mimic3-http/mimic3_http/app.py
index 2932f7a..b774c3d 100644
--- a/mimic3-http/mimic3_http/app.py
+++ b/mimic3-http/mimic3_http/app.py
@@ -36,6 +36,7 @@ from quart import (
     request,
     send_from_directory,
 )
+from swagger_ui import api_doc
 
 from ._resources import _DIR, _PACKAGE
 from .args import _MISSING
@@ -273,6 +274,11 @@ def get_app(args: argparse.Namespace, mimic3: Mimic3TextToSpeechSystem, temp_dir
 
         return Response(wav_bytes, mimetype="audio/wav")
 
+    # Swagger UI
+    api_doc(
+        app, config_path=_DIR / "swagger.yaml", url_prefix="/openapi", title="Mimic 3"
+    )
+
     @app.errorhandler(Exception)
     async def handle_error(err) -> typing.Tuple[str, int]:
         """Return error as text."""
diff --git a/mimic3-http/mimic3_http/swagger.yaml b/mimic3-http/mimic3_http/swagger.yaml
new file mode 100644
index 0000000..35d9c69
--- /dev/null
+++ b/mimic3-http/mimic3_http/swagger.yaml
@@ -0,0 +1,46 @@
+openapi: "3.0.0"
+info:
+  title: 'Mimic 3'
+  version: '0.1'
+  description: 'A fast and local neural text to speech system for Mycroft'
+schemes:
+  - http
+servers:
+  - url: http://localhost:59125
+    description: Local server
+paths:
+  /api/tts:
+    get:
+      summary: 'Speak text to WAV'
+      parameters:
+        - in: query
+          name: voice
+          required: true
+          description: 'Voice in the form <lang>/<name>_<quality> optional with #<speaker> at the end'
+          schema:
+            type: string
+            example: 'en_UK/apope_low'
+        - in: query
+          name: text
+          required: true
+          description: 'Text to speak'
+          schema:
+            type: string
+            example: 'Welcome to the world of speech synthesis!'
+      produces:
+        - audio/wav
+      responses:
+        '200':
+          description: audio
+          schema:
+            type: binary
+  /api/voices:
+    get:
+      summary: 'Get available voices'
+      produces:
+        - application/json
+      responses:
+        '200':
+          description: voices
+          schema:
+            type: object
diff --git a/mimic3-http/mimic3_http/templates/index.html b/mimic3-http/mimic3_http/templates/index.html
index 268c5ab..cc6a02f 100644
--- a/mimic3-http/mimic3_http/templates/index.html
+++ b/mimic3-http/mimic3_http/templates/index.html
@@ -54,6 +54,8 @@
                 </div>
                 <div class="col-auto">
                     <button id="speak-button" name="speak" class="btn btn-lg btn-primary" alt="Generate speech">Speak</button>
+                    <br/><br />
+                    <a href="/openapi/" title="OpenAPI page" target="_blank" class="badge badge-info">API</a>
                 </div>
             </div>
             <div class="row mt-3">
diff --git a/mimic3-http/requirements.txt b/mimic3-http/requirements.txt
index 7dd160a..f06a577 100644
--- a/mimic3-http/requirements.txt
+++ b/mimic3-http/requirements.txt
@@ -2,3 +2,4 @@ mimic3-tts<1.0
 quart>=0.16,<1.0
 quart-cors
 requests>=2,<3
+swagger-ui-py>=21,<22
diff --git a/mimic3-http/setup.py b/mimic3-http/setup.py
index 0c1782f..7bf5047 100644
--- a/mimic3-http/setup.py
+++ b/mimic3-http/setup.py
@@ -80,13 +80,22 @@ setup(
     author_email="michael.hansen@mycroft.ai",
     license="AGPLv3+",
     packages=setuptools.find_packages(),
-    package_data={"mimic3_http": ["VERSION", "py.typed", "templates", "css", "img"]},
+    package_data={
+        "mimic3_http": [
+            "VERSION",
+            "py.typed",
+            "templates",
+            "css",
+            "img",
+            "swagger.yaml",
+        ]
+    },
     install_requires=requirements,
     extras_require={':python_version<"3.9"': ["importlib_resources"], **extras_require},
     entry_points={
         "console_scripts": [
             "mimic3-server = mimic3_http.__main__:main",
-            "mimic3-client = mimic3_http.client.__main__:main",
+            "mimic3-client = mimic3_http.client:main",
         ]
     },
     classifiers=[