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OpenAI

OpenAI Live API

The Live API from OpenAI — 7 operation(s) for live.

Documentation Provider Profile APIs.io OpenAPI GitHub

OpenAI Live API is one of 62 APIs that OpenAI publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

This API exposes 6 JSON Schema definitions.

Tagged areas include Live. The published artifact set on APIs.io includes an OpenAPI specification, a GitHub repository, and 6 JSON Schemas.

This API exposes 7 operations across 7 paths, and defines 47 schemas. It is described by OpenAPI 3.2.0, at version 2.3.0.

Requests are made against a single base URL, https://api.openai.com/v1.

7 operations 7 paths 47 schemas 1 GET6 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
2.3.0
Base URL
https://api.openai.com
Authentication
HTTP Bearer, HTTP Bearer
Contact
OpenAI Support
License
MIT
Terms of Service
View terms
Resource Areas
1

Authentication & Security 2

OpenAI Live API declares 2 security schemes for authenticating requests. It accepts HTTP bearer tokens (ApiKeyAuth). It accepts HTTP bearer tokens (AdminApiKeyAuth). By default, every request must be authenticated.

Paths & Operations 7

Across 7 paths, the API surfaces 7 operations — 1 GET, 6 POST. Each is listed below with its method, path, parameters, and response codes.

Live 7
POST
/live/sessions
Create session
create-live body → 201
POST
/live/sessions/{session_id}/accept
Accept call
accept-live-session 1 param body → 200
POST
/live/sessions/{session_id}/fork
Fork session
fork-live-session 1 param body → 201
POST
/live/sessions/{session_id}/hangup
Hang up session
hangup-live-session 1 param → 200
POST
/live/sessions/{session_id}/refer
Transfer call
refer-live-session 1 param body → 200
POST
/live/sessions/{session_id}/reject
Reject call
reject-live-session 1 param body → 200
GET
/live/sessions/{session_id}/content
Download recording
download-live-recording 1 param → 200

Schemas 47

The contract defines 47 schemas that model the data the API accepts and returns. The most detailed are LiveResponsesDelegationSettingsInputParam (9 properties), LiveResponsesDelegationSettingsUpdateInputParam (9 properties), LiveMediaSessionCreateParams (7 properties), LiveCallAcceptSession (7 properties). Each schema is shown below with its type and property counts.

delegation
LiveWebSearchToolInputParam
object
A web search tool available to the Live session’s Responses backend.
1 property 1 required
target_uri
string
URI that should appear in the SIP Refer-To header. Supports values like tel:+14155550123 or sip:agent@example.com.
LiveClientConfigParam
object
Startup-only capabilities for an untrusted frontend attached to a unified WebRTC session. Trusted sideband connections are unaffected.
1 property 1 required
LiveInitialSessionAudioOutputParam
object
Settings for speech generated by the Live model. Choose the voice before starting the session.
1 property
LiveCallAcceptRequest
object
Accept an incoming SIP call with Live startup configuration.
1 property 1 required
LiveReasoningEffort
string
LiveCreateRequest
object
Create a Live WebRTC session with JSON session configuration and an SDP offer. Follow the [Live prompting guide](https://developers.openai.com/api/docs/guides/…
2 properties 2 required
LiveForkRequest
object
Fork a stored Live session onto a new WebRTC connection. Omit session or send an empty object to inherit its configuration.
2 properties 1 required
LiveInitialMessageStatus
string
LiveInitialInputTextContentPartParam
object
Text supplied in a developer or user message when starting a Live session.
2 properties 1 required
LiveCallReferRequest
object
Parameters used to transfer a Live SIP call to another destination.
1 property 1 required
LiveDelegationReasoningInputParam
object
Reasoning options for Responses requests made on behalf of the Live session.
2 properties
input
array
Ordered text-only history supplied before startup. Supports developer, user, and assistant messages with one text part each; at most 128 messages and 8,192 ren…
LiveDelegationTextInputParam
object
Text generation options for the Live session’s Responses backend.
1 property
LiveMediaSessionAudioParam
object
Startup audio output configuration. WebRTC and SIP negotiate the media format; audio.format is only accepted for primary WebSockets. Voice cannot change after…
1 property
LiveToolChoiceEnum
string
LiveMCPToolChoiceParam
object
3 properties 3 required
LiveResponsesServiceTier
string
LiveFunctionToolInputParam
object
A function tool available to the Responses backend when the Live model delegates a task.
5 properties 2 required
LiveResponsesDelegationParam
object
Delegate tasks to a Responses model managed by the Live session.
2 properties 2 required
LiveMediaSessionForkParams
object
Optional overrides for a stored Live session. Omitted settings are inherited. The model, voice, frontend instructions, and prior conversation come from the sto…
3 properties
LiveResponsesDelegationSettingsInputParam
object
Model, prompt, and tool settings for tasks delegated by the Live session to a Responses backend.
9 properties 1 required
instructions
LiveInitialUserMessageItemParam
object
A user message included in the initial text history of a Live session.
5 properties 2 required
store
boolean
Whether to store the session for later forking and recording download. Defaults to false for new sessions.
LiveReasoningSummary
string
LiveInitialDeveloperMessageItemParam
object
A developer message included in the initial text history of a Live session.
5 properties 2 required
LiveAllowedServerEventParam
object
A Live server event selector for the WebRTC frontend data channel.
2 properties 1 required
LiveResponsesDelegationUpdateParam
object
Update the Responses backend for an existing Live session without changing delegation ownership.
2 properties 1 required
LiveTextVerbosity
string
LiveInitialTextContentPartParam
object
Assistant text supplied as conversation history when starting a Live session.
2 properties 1 required
LiveCreateResponse
object
The created Live session identifier and WebRTC answer. Apply transport.sdp as the peer's remote answer and wait for session.started on the data channel before…
2 properties 2 required
LiveDataChannelConfigParam
object
Control which Live events an untrusted WebRTC frontend can send and receive over its data channel. These restrictions do not apply to trusted sideband connecti…
2 properties
LiveCustomVoiceParam
object
1 property 1 required
LiveResponsesDelegationSettingsUpdateInputParam
object
Updates to the Responses backend of an existing Live session. Omitted settings retain their current values.
9 properties
LiveInitialItem
A developer, user, or assistant message supplied as text history before the Live session starts.
properties-store
boolean
Whether to store the forked session. Omission inherits the stored session's setting.
LiveWebRTCTransport
object
WebRTC transport carrying the offer SDP in a creation request or answer SDP in its response.
2 properties 2 required
LiveMediaSessionCreateParams
object
Startup configuration for a Live media session. Follow the [Live prompting guide](https://developers.openai.com/api/docs/guides/live-prompting) when writing fr…
7 properties 1 required
LiveInitialOutputTextContentPartParam
object
Assistant output text supplied as conversation history when starting a Live session.
2 properties 2 required
LiveCallRejectRequest
object
Parameters used to reject an incoming Live SIP call.
1 property 1 required
ModelIdsLive
The Live model. Required in the session configuration for every transport; do not pass it as a URL query parameter.
LiveCallAcceptSession
object
Startup configuration for accepting an incoming Live SIP call. Follow the [Live prompting guide](https://developers.openai.com/api/docs/guides/live-prompting)…
7 properties 2 required
LiveClientDelegationParam
object
Delegate tasks to your application. The Live session emits delegation events that your backend handles.
1 property 1 required
LiveFunctionToolChoiceParam
object
2 properties 2 required
LiveInitialAssistantMessageItemParam
object
An assistant message included in the initial text history of a Live session.
5 properties 2 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

openai-live-api-openapi.yml Raw ↑

Other APIs OpenAI publishes across the network.

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OpenAI Uploads API
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OpenAI Realtime API
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OpenAI Evals API
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OpenAI Videos API
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OpenAI Conversations API
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OpenAI Containers API
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OpenAI ChatKit API
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OpenAI Skills API
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#Live
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API Details
ID
openai:openai-live-api
Base URL
https://api.openai.com
Docs
https://platform.openai.com/docs/api-reference/responses
Provider
OpenAI
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