Merge pull request #202 from restackio/agentVapi

Add Agent with telephony - vapi

Author: aboutphilippe

agent_apis/README.md

@@ -1,6 +1,6 @@
-# Restack AI - Agent with Third Party APIs
+# Restack AI - Agent with third party APIs
 
-This repository contains an agent with Third Party APIs
+This repository contains an agent with third party APIs
 It demonstrates how to set up a multi steps workflow with Weather API and OpenAI.
 
 ## Prerequisites

agent_chat/README.md

@@ -1,6 +1,6 @@
-# Restack AI - Agent Chat
+# Restack AI - Agent with chat
 
-This repository contains a an agent chat for Restack.
+This repository contains an agent with chat for Restack.
 It demonstrates how to set up a workflow to have a conversation with an AI agent.
 
 ## Prerequisites

agent_rag/README.md

@@ -1,4 +1,4 @@
-# Restack AI - Agent Rag
+# Restack AI - Agent with RAG
 
 This repository demonstrates how to set up a basic agent with RAG.
 

agent_stream/README.md

@@ -1,4 +1,4 @@
-# Restack AI - Agent with Stream
+# Restack AI - Agent with stream
 
 Build an Agent user can chat with and return streaming response.
 

agent_telephony/twilio/agent_twilio/src/agents/agent.py

@@ -14,12 +14,15 @@
 class MessagesEvent(BaseModel):
     messages: list[Message]
 
+
 class EndEvent(BaseModel):
     end: bool
 
+
 class CallInput(BaseModel):
     phone_number: str
 
+
 @agent.defn()
 class AgentTwilio:
     def __init__(self) -> None:
@@ -65,10 +68,9 @@ async def end(self, end: EndEvent) -> EndEvent:
         log.info("Received end")
         self.end = True
         return end
-    
+
     @agent.run
     async def run(self) -> None:
-
         room = await agent.step(function=livekit_room)
         self.room_id = room.name
 

agent_telephony/twilio/livekit-trunk-setup/twilio_trunk.py

@@ -15,6 +15,7 @@ def get_env_var(var_name):
         exit(1)
     return value
 
+
 def create_livekit_trunk(client, sip_uri):
     domain_name = f"livekit-trunk-{os.urandom(4).hex()}.pstn.twilio.com"
     trunk = client.trunking.v1.trunks.create(
@@ -31,20 +32,17 @@ def create_livekit_trunk(client, sip_uri):
     logging.info("Created new LiveKit Trunk.")
     return trunk
 
+
 def create_inbound_trunk(phone_number):
-    trunk_data = {
-        "trunk": {
-            "name": "Inbound LiveKit Trunk",
-            "numbers": [phone_number]
-        }
-    }
+    trunk_data = {"trunk": {"name": "Inbound LiveKit Trunk", "numbers": [phone_number]}}
     with open("inbound_trunk.json", "w") as f:
         json.dump(trunk_data, f, indent=4)
 
     result = subprocess.run(
         ["lk", "sip", "inbound", "create", "inbound_trunk.json"],
         capture_output=True,
-        text=True, check=False
+        text=True,
+        check=False,
     )
 
     if result.returncode != 0:
@@ -59,23 +57,21 @@ def create_inbound_trunk(phone_number):
     logging.error("Could not find inbound trunk SID in output.")
     return None
 
+
 def create_dispatch_rule(trunk_sid):
     dispatch_rule_data = {
         "name": "Inbound Dispatch Rule",
         "trunk_ids": [trunk_sid],
-        "rule": {
-            "dispatchRuleIndividual": {
-                "roomPrefix": "call-"
-            }
-        }
+        "rule": {"dispatchRuleIndividual": {"roomPrefix": "call-"}},
     }
     with open("dispatch_rule.json", "w") as f:
         json.dump(dispatch_rule_data, f, indent=4)
 
     result = subprocess.run(
         ["lk", "sip", "dispatch-rule", "create", "dispatch_rule.json"],
         capture_output=True,
-        text=True, check=False
+        text=True,
+        check=False,
     )
 
     if result.returncode != 0:
@@ -84,6 +80,7 @@ def create_dispatch_rule(trunk_sid):
 
     logging.info(f"Dispatch rule created: {result.stdout}")
 
+
 def main():
     load_dotenv()
     logging.basicConfig(level=logging.INFO)
@@ -98,7 +95,7 @@ def main():
     existing_trunks = client.trunking.v1.trunks.list()
     livekit_trunk = next(
         (trunk for trunk in existing_trunks if trunk.friendly_name == "LiveKit Trunk"),
-        None
+        None,
     )
 
     if not livekit_trunk:
@@ -110,5 +107,6 @@ def main():
     if inbound_trunk_sid:
         create_dispatch_rule(inbound_trunk_sid)
 
+
 if __name__ == "__main__":
     main()

agent_telephony/twilio/livekit_pipeline/src/pipeline.py

@@ -21,30 +21,30 @@
 logging.basicConfig(level=logging.INFO)
 logger = logging.getLogger(__name__)
 
+
 def validate_envs() -> None:
-    """
-    Check for the presence of all required environment variables.
-    Logs a warning if any variable is missing.
-    """
     required_envs = {
         "LIVEKIT_URL": "LiveKit server URL",
         "LIVEKIT_API_KEY": "API Key for LiveKit",
         "LIVEKIT_API_SECRET": "API Secret for LiveKit",
         "DEEPGRAM_API_KEY": "API key for Deepgram (used for STT)",
-        "ELEVEN_API_KEY": "API key for ElevenLabs (used for TTS)"
+        "ELEVEN_API_KEY": "API key for ElevenLabs (used for TTS)",
     }
     for key, description in required_envs.items():
         if not os.environ.get(key):
             logger.warning("Environment variable %s (%s) is not set.", key, description)
 
+
 # Validate environments at module load
 validate_envs()
 
+
 def prewarm(proc: JobProcess) -> None:
     logger.info("Prewarming: loading VAD model...")
     proc.userdata["vad"] = silero.VAD.load()
     logger.info("VAD model loaded successfully.")
 
+
 async def entrypoint(ctx: JobContext) -> None:
     metadata = ctx.job.metadata
 
@@ -75,11 +75,10 @@ async def entrypoint(ctx: JobContext) -> None:
     engine_api_address = os.environ.get("RESTACK_ENGINE_API_ADDRESS")
     if not engine_api_address:
         agent_backend_host = "http://localhost:9233"
+    elif not engine_api_address.startswith("https://"):
+        agent_backend_host = "https://" + engine_api_address
     else:
-        if not engine_api_address.startswith("https://"):
-            agent_backend_host = "https://" + engine_api_address
-        else:
-            agent_backend_host = engine_api_address
+        agent_backend_host = engine_api_address
 
     logger.info("Using RESTACK_ENGINE_API_ADDRESS: %s", agent_backend_host)
 
@@ -120,6 +119,7 @@ def on_metrics_collected(agent_metrics: metrics.AgentMetrics) -> None:
     # Start the voice pipeline agent.
     agent.start(ctx.room, participant)
 
+
 if __name__ == "__main__":
     cli.run_app(
         WorkerOptions(

agent_telephony/twilio/readme.md

@@ -1,16 +1,13 @@
 
-wip# Restack AI - Agent with Telephony - Twilio
+# Restack AI - Agent with telephony - Twilio
 
 Build an AI agent that do an outbound call with Twilio and can interact with in realtime with voice.
 
 ## Prerequisites
 
 - Docker (for running Restack)
 - Python 3.10 or higher
-- Livekit account (for WebRTC pipeline)
-- Deepgram account (For speech-to-text transcription)
-- ElevenLabs account (for text-to-speech and voice cloning)
-- Twilio account (for outbound calls)
+- Vapi account (for outbound calls)
 
 ### Trunk setup for outbound calls with Twilio
 

agent_telephony/vapi/agent_vapi/.env.Example

@@ -0,0 +1,12 @@
+
+RESTACK_API_KEY=
+VAPI_TOKEN=
+
+# Restack Cloud (Optional)
+
+# RESTACK_ENGINE_ID=<your-engine-id>
+# RESTACK_ENGINE_API_KEY=<your-engine-api-key>
+# RESTACK_ENGINE_API_ADDRESS=<your-engine-api-address>
+# RESTACK_ENGINE_ADDRESS=<your-engine-address>
+
+

agent_telephony/vapi/agent_vapi/.gitignore

@@ -0,0 +1,5 @@
+__pycache__
+.pytest_cache
+venv
+.env
+.vscode