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error=APIError('OpenAI Realtime API returned an er...
# ask-ai
w
error=APIError('OpenAI Realtime API returned an error', body=Error(message="Missing required parameter: 'item.type'.", type='invalid_request_error', code='missing_required_parameter', event_id='chat_ctx_create_cd343af9eee3', param='item.type'), retryable=True),
t
Thanks for reaching out, Test. I'm an AI assistant and I'm here to help. Give me a moment while I research this topic.
Thanks — I see the error you’re getting: 
Missing required parameter: 'item.type'
. I’m here to help you troubleshoot it. Quick explanation of what that means • The OpenAI Realtime API expects every item in the session/conversation payload to include a 
type
field (for example 
"type": "message"
). The error happens when an item is sent without that 
type
property or the property is malformed. What I can help with next • If you’re using the LiveKit OpenAI Realtime plugin (recommended), the plugin’s 
RealtimeModel
usually handles those low-level fields for you. The error commonly appears when: ◦ You’re building or mutating the Realtime payload manually and forgot 
item.type
. ◦ A custom integration or older/incorrect plugin usage is sending an incomplete item. ◦ A bug or mismatch in the client code constructs the items incorrectly. Please share the following so I can pinpoint the cause 1. Which integration/SDK are you using? (LiveKit OpenAI plugin, OpenAI SDK directly, or a custom client) 2. A minimal code snippet that prepares/sends the Realtime session or the part that adds items to the session (remove any secrets). 3. The exact model or plugin version you’re using, if known. 4. Whether you modified the session payload manually or rely on the plugin to create items. Immediate checks you can make right now • If you manually construct items, confirm each item object includes a 
type
key with a valid value, e.g.: ◦ 
{"type": "message", "role": "user", "content": ...}
• If you use the LiveKit plugin without manual payloads, try updating to the latest plugin version and re-run to see if the plugin handles the payload correctly. • Search your code for any place that appends items to the session and add logging to inspect the exact payload before it’s sent. If you share a short snippet or tell me which SDK/plugin and version you’re on, I’ll give exact edits or an example payload to fix the error. Sources: OpenAI Realtime API plugin guide | LiveKit Documentation | OpenAI and LiveKit partner to turn Advanced Voice into an API | LiveKit
w
i am calling await self.update_chat_ctx(chat_ctx)
t
Thanks — I see you’re calling 
await self.update_chat_ctx(chat_ctx)
and getting the 
Missing required parameter: 'item.type'
error. I can help track down why 
item.type
is missing, but I need a bit more detail. Could you share the following? 1. The shape/contents of the 
chat_ctx
variable you’re passing (a minimal example is fine; remove secrets). 2. The 
update_chat_ctx
method implementation (or the code that ultimately builds/sends the payload). 3. Which integration/SDK/plugin you’re using (LiveKit OpenAI plugin, OpenAI SDK directly, or a custom client) and the version if known. 4. Any logging or stack trace around the error (full error message you posted is helpful — if there’s more context, include it). 5. Whether you or a library are constructing items manually anywhere (places that append to a list like 
items
, 
messages
, or similar). Quick debugging steps you can run right now • Log 
chat_ctx
right before the 
update_chat_ctx
call to confirm each item includes a 
type
field. • Search your code for any places that build items (e.g., objects with 
role
, 
content
, etc.) and ensure they include 
"type": "message"
or the appropriate type. • If you’re relying on the LiveKit plugin to manage context, confirm you’re not mutating the plugin’s objects directly before sending. If you paste the minimal 
chat_ctx
structure and the 
update_chat_ctx
function, I’ll point out exactly where to add/fix the 
item.type
.
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