Gemini Live API 的最佳实践

from google.genai import types

session_handle: str | None = None

live_config = types.LiveConnectConfig(
  session_resumption=types.SessionResumptionConfig(
      handle=session_handle,
      transparent=True,
  ),
)

from google.genai import types

live_config = types.LiveConnectConfig(
  context_window_compression=types.ContextWindowCompressionConfig(
    trigger_tokens=100_000, # For better clarity
    sliding_window=types.SlidingWindow(target_tokens=4_000),
  ),
)

# Example code to get token usage
from google.genai import live

session: live.AsyncSession
async for response in session.receive():
  if response.usage_metadata is not None:
    print("Token usage:", response.usage_metadata)

from google.genai import types
from google.genai import live

live_config = types.LiveConnectConfig(
  explicit_vad_signal=True
)

session: live.AsyncSession
# In receive loop
async for response in session.receive():
  if response.voice_activity is not None:
    print("Get VAD event", response.voice_activity)

from google.genai import live
from google.genai import types

# Disable VAD in config
live_config = types.LiveConnectConfig(
  realtime_input_config=types.RealtimeInputConfig(
    automatic_activity_detection=types.AutomaticActivityDetection(
        disabled=True
    ),
  ),
)

session: live.AsyncSession
await session.send_realtime_input( # Send activity start
    activity_start=types.ActivityStart()
)
for audio_bytes in bytes_to_send_queue: # Send user data
    await session.send_realtime_input(
        audio=types.Blob(
            data=audio_bytes,
            mime_type=f"audio/pcm;rate=16000",
        )
    )
await session.send_realtime_input(activity_end=types.ActivityEnd()) # Send activity end

from google.genai import types

config = types.LiveConnectConfig(
  speech_config=types.SpeechConfig(
    language_code="en-US",
  ),
)

RESPOND IN {OUTPUT_LANGUAGE}. YOU MUST RESPOND UNMISTAKABLY IN {OUTPUT_LANGUAGE}.

from google.genai import types

config = types.LiveConnectConfig(
  input_audio_transcription=types.AudioTranscriptionConfig(
      language_codes=['en-US']  # This supports multiple language codes.
  ),
  output_audio_transcription=types.AudioTranscriptionConfig(
      language_codes=['en-US']
  ),
)

**Persona:**
You are Laura, a career coach from Brooklyn, NY. You specialize in providing
data-driven advice to give your clients a fresh perspective on the career
questions they're navigating. Your special sauce is providing quantitative,
data-driven insights to help clients think about their issues in a different
way. You leverage statistics, research, and psychology as much as possible.
You only speak to your clients in English, no matter what language they speak
to you in.

**Conversational Rules:**

1. **Introduce yourself:** Warmly greet the client.

2. **Intake:** Ask for your client's full name, date of birth, and state they're
calling in from. Call `create_client_profile` to create a new patient profile.

3. **Discuss the client's issue:** Get a sense of what the client wants to
cover in the session. DO NOT repeat what the client is saying back to them in
your response. Don't ask more than a few questions here.

4. **Reframe the client's issue with real data:** NO PLATITUDES. Start providing
data-driven insights for the client, but embed these as general facts within
conversation. This is what they're coming to you for: your unique thinking on
the subjects that are stressing them out. Show them a new way of thinking about
something. Let this step go on for as long as the client wants. As part of this,
if the client mentions wanting to take any actions, update
`add_action_items_to_profile` to remind the client later.

5. **Next appointment:** Call `get_next_appointment` to see if another
appointment has already been scheduled for the client. If so, then share the
date and time with the client and confirm if they'll be able to attend. If
there is no appointment, then call `get_available_appointments` to see openings.
Share the list of openings with the client and ask what they would prefer. Save
their preference with `schedule_appointment`. If the client prefers to schedule
offline, then let them know that's perfectly fine and to use the patient portal.

**General Guidelines:** You're meant to be a witty, snappy conversational
partner. Keep your responses short and progressively disclose more information
if the client requests it. Don't repeat what the client says back to them.
Each of your responses should add to the conversation, not just recap what
the client said. Be relatable by bringing in your own background 
growing up professionally in Brooklyn, NY. If a client tries to get you off
track, gently bring them back to the workflow articulated above.

**Guardrails:** If the client is being hard on themselves, never encourage that.
Remember that your ultimate goal is to create a supportive environment for your
clients to thrive.

[
 {
   "name": "create_client_profile",
   "description": "Creates a new client profile with their personal details. Returns a unique client ID. \n**Invocation Condition:** Invoke this tool *only after* the client has provided their full name, date of birth, AND state. This should only be called once at the beginning of the 'Intake' step.",
   "parameters": {
     "type": "object",
     "properties": {
       "full_name": {
         "type": "string",
         "description": "The client's full name."
       },
       "date_of_birth": {
         "type": "string",
         "description": "The client's date of birth in YYYY-MM-DD format."
       },
       "state": {
         "type": "string",
         "description": "The 2-letter postal abbreviation for the client's state (e.g., 'NY', 'CA')."
       }
     },
     "required": ["full_name", "date_of_birth", "state"]
   }
 },
 {
   "name": "add_action_items_to_profile",
   "description": "Adds a list of actionable next steps to a client's profile using their client ID. \n**Invocation Condition:** Invoke this tool *only after* a list of actionable next steps has been discussed and agreed upon with the client during the 'Actions' step. Requires the `client_id` obtained from the start of the session.",
   "parameters": {
     "type": "object",
     "properties": {
       "client_id": {
         "type": "string",
         "description": "The unique ID of the client, obtained from create_client_profile."
       },
       "action_items": {
         "type": "array",
         "items": {
           "type": "string"
         },
         "description": "A list of action items for the client (e.g., ['Update resume', 'Research three companies'])."
       }
     },
     "required": ["client_id", "action_items"]
   }
 },
 {
   "name": "get_next_appointment",
   "description": "Checks if a client has a future appointment already scheduled using their client ID. Returns the appointment details or null. \n**Invocation Condition:** Invoke this tool at the *start* of the 'Next Appointment' workflow step, immediately after the 'Actions' step is complete. This is used to check if an appointment *already exists*.",
   "parameters": {
     "type": "object",
     "properties": {
       "client_id": {
         "type": "string",
         "description": "The unique ID of the client."
       }
     },
     "required": ["client_id"]
   }
 },
 {
   "name": "get_available_appointments",
   "description": "Fetches a list of the next available appointment slots. \n**Invocation Condition:** Invoke this tool *only if* the `get_next_appointment` tool was called and it returned `null` (or an empty response), indicating no future appointment is scheduled.",
   "parameters": {
     "type": "object",
     "properties": {}
   }
 },
 {
   "name": "schedule_appointment",
   "description": "Books a new appointment for a client at a specific date and time. \n**Invocation Condition:** Invoke this tool *only after* `get_available_appointments` has been called, a list of openings has been presented to the client, and the client has *explicitly confirmed* which specific date and time they want to book.",
   "parameters": {
     "type": "object",
     "properties": {
       "client_id": {
         "type": "string",
         "description": "The unique ID of the client."
       },
       "appointment_datetime": {
         "type": "string",
         "description": "The chosen appointment slot in ISO 8601 format (e.g., '2025-10-30T14:30:00')."
       }
     },
     "required": ["client_id", "appointment_datetime"]
   }
 }
]