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Reuse shared httpx client in realtime route #16

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Reuse shared httpx client in realtime route #16

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169 changes: 84 additions & 85 deletions backend/routes/realtime.py
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,7 @@
router = APIRouter(prefix="/v1/realtime", tags=["realtime"])

OPENAI_API_KEY = getenv("OPENAI_API_KEY")
_openai_client = httpx.AsyncClient(timeout=30.0)


def load_voice_prompt() -> str:
Expand Down Expand Up @@ -51,96 +52,94 @@ async def create_realtime_session(request: Request):
from datetime import datetime
instructions = instructions.replace("{current_date}", datetime.now().strftime("%d %B %Y"))

async with httpx.AsyncClient() as client:
response = await client.post(
"https://api.openai.com/v1/realtime/sessions",
headers={
"Authorization": f"Bearer {OPENAI_API_KEY}",
"Content-Type": "application/json"
},
json={
"model": "gpt-realtime",
"modalities": ["audio", "text"],
"voice": "shimmer",
"instructions": instructions,
"tools": [
{
"type": "function",
"name": "meeting_notes",
"description": "Query Birmingham AI community meeting notes. Supports two actions: 'list_sessions' to see available meetings, and 'search' to find content within meetings.",
"parameters": {
"type": "object",
"properties": {
"action": {
"type": "string",
"enum": ["list_sessions", "search"],
"description": "Action to perform. Use 'list_sessions' to see what meetings/sessions exist (e.g., 'what meetings happened in November?'). Use 'search' to find specific content within meetings (e.g., 'what was discussed about AI ethics?')."
},
"filter": {
"type": "string",
"description": "For 'list_sessions' action: filter term to narrow results (e.g., 'November', 'Engineering', '2025')"
},
"query": {
"type": "string",
"description": "For 'search' action: the search query to find relevant content"
},
"top_k": {
"type": "integer",
"description": "For 'search' action: number of results to return (default: 5)",
"default": 5
},
"session_filter": {
"type": "string",
"description": "For 'search' action: filter for specific session. Use format '[Domain] breakout [Month] [Year]' (e.g., 'Engineering breakout November 2025') or 'General meetup [Month] [Year]'."
}
response = await _openai_client.post(
"https://api.openai.com/v1/realtime/sessions",
headers={
"Authorization": f"Bearer {OPENAI_API_KEY}",
"Content-Type": "application/json"
},
json={
"model": "gpt-realtime",
"modalities": ["audio", "text"],
"voice": "shimmer",
"instructions": instructions,
"tools": [
{
"type": "function",
"name": "meeting_notes",
"description": "Query Birmingham AI community meeting notes. Supports two actions: 'list_sessions' to see available meetings, and 'search' to find content within meetings.",
"parameters": {
"type": "object",
"properties": {
"action": {
"type": "string",
"enum": ["list_sessions", "search"],
"description": "Action to perform. Use 'list_sessions' to see what meetings/sessions exist (e.g., 'what meetings happened in November?'). Use 'search' to find specific content within meetings (e.g., 'what was discussed about AI ethics?')."
},
"filter": {
"type": "string",
"description": "For 'list_sessions' action: filter term to narrow results (e.g., 'November', 'Engineering', '2025')"
},
"required": ["action"]
}
},
{
"type": "function",
"name": "eventbrite",
"description": "Get Birmingham AI events from Eventbrite. Supports two actions: 'list' for upcoming events, and 'details' for full information about a specific event.",
"parameters": {
"type": "object",
"properties": {
"action": {
"type": "string",
"enum": ["list", "details"],
"description": "Action to perform. Use 'list' to see upcoming events. Use 'details' to get full description and agenda for a specific event."
},
"limit": {
"type": "integer",
"description": "For 'list' action: number of events to return (default: 3)",
"default": 3
},
"event_id": {
"type": "string",
"description": "For 'details' action: the event ID to get full details for"
}
"query": {
"type": "string",
"description": "For 'search' action: the search query to find relevant content"
},
"required": ["action"]
}
"top_k": {
"type": "integer",
"description": "For 'search' action: number of results to return (default: 5)",
"default": 5
},
"session_filter": {
"type": "string",
"description": "For 'search' action: filter for specific session. Use format '[Domain] breakout [Month] [Year]' (e.g., 'Engineering breakout November 2025') or 'General meetup [Month] [Year]'."
}
},
"required": ["action"]
}
],
"input_audio_transcription": {
"model": "whisper-1"
},
"turn_detection": {
"type": "server_vad",
"threshold": 0.5,
"prefix_padding_ms": 300,
"silence_duration_ms": 500
{
"type": "function",
"name": "eventbrite",
"description": "Get Birmingham AI events from Eventbrite. Supports two actions: 'list' for upcoming events, and 'details' for full information about a specific event.",
"parameters": {
"type": "object",
"properties": {
"action": {
"type": "string",
"enum": ["list", "details"],
"description": "Action to perform. Use 'list' to see upcoming events. Use 'details' to get full description and agenda for a specific event."
},
"limit": {
"type": "integer",
"description": "For 'list' action: number of events to return (default: 3)",
"default": 3
},
"event_id": {
"type": "string",
"description": "For 'details' action: the event ID to get full details for"
}
},
"required": ["action"]
}
}
],
"input_audio_transcription": {
"model": "whisper-1"
},
timeout=30.0
"turn_detection": {
"type": "server_vad",
"threshold": 0.5,
"prefix_padding_ms": 300,
"silence_duration_ms": 500
}
}
)

if response.status_code != 200:
error_detail = response.text
raise HTTPException(
status_code=response.status_code,
detail=f"Failed to create realtime session: {error_detail}"
)

if response.status_code != 200:
error_detail = response.text
raise HTTPException(
status_code=response.status_code,
detail=f"Failed to create realtime session: {error_detail}"
)

return response.json()
return response.json()