OpenAI · Capability

OpenAI Realtime — Realtime

OpenAI Realtime — Realtime. Self-contained Naftiko capability covering the Realtime API for low-latency speech-to-speech, multimodal voice agents. WebRTC, WebSocket, and SIP connection methods. Bidirectional event streaming on a session.

OpenAI Realtime — Realtime is a Naftiko capability published by OpenAI, one of 20 capabilities the APIs.io network indexes for this provider. It bundles 1 operation across the POST method rooted at /v1/realtime/client_secrets.

The capability includes 2 state-changing operations. Lead operation: Mint an ephemeral client secret for a Realtime WebRTC session. Can be deployed as a REST endpoint, MCP tool, or Agent Skill via Naftiko.

Tagged areas include Openai, Realtime, Voice, and Audio.

Run with Naftiko OpenaiRealtimeVoiceAudio

What You Can Do

POST

Createrealtimeclientsecret — Create an ephemeral client secret.

/v1/realtime/client_secrets

MCP Tools

openai-create-realtime-client-secret

Mint an ephemeral client secret for a Realtime WebRTC session.

openai-hangup-realtime-call

End a Realtime voice call.

idempotent

Capability Spec

naftiko: 1.0.0-alpha2
info:
  label: OpenAI Realtime — Realtime
  description: 'OpenAI Realtime — Realtime. Self-contained Naftiko capability covering the Realtime API
    for low-latency speech-to-speech, multimodal voice agents. WebRTC, WebSocket, and SIP connection methods.
    Bidirectional event streaming on a session.'
  tags:
  - Openai
  - Realtime
  - Voice
  - Audio
  created: '2026-05-22'
  modified: '2026-05-22'
binds:
- namespace: env
  keys:
    OPENAI_API_KEY: OPENAI_API_KEY
capability:
  consumes:
  - type: http
    namespace: realtime-realtime
    baseUri: https://api.openai.com/v1
    description: OpenAI Realtime — Realtime business capability. HTTP control-plane operations only; the
      realtime media plane runs over WebRTC / WebSocket / SIP and is not exposed as REST.
    resources:
    - name: realtime-client-secrets
      path: /realtime/client_secrets
      operations:
      - name: createrealtimeclientsecret
        method: POST
        description: Create an ephemeral client secret for a Realtime session (used by browser/mobile clients to authenticate WebRTC connections without exposing the long-lived API key).
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
        inputParameters:
        - name: body
          in: body
          type: object
          description: Request body (JSON) — session config.
          required: true
    - name: realtime-calls
      path: /realtime/calls
      operations:
      - name: listrealtimecalls
        method: GET
        description: List active Realtime voice calls.
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
    - name: realtime-call-accept
      path: /realtime/calls/{call_id}/accept
      operations:
      - name: acceptrealtimecall
        method: POST
        description: Accept an inbound SIP/voice call.
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
        inputParameters:
        - name: call_id
          in: path
          type: string
          required: true
    - name: realtime-call-hangup
      path: /realtime/calls/{call_id}/hangup
      operations:
      - name: hangupreatimecall
        method: POST
        description: End an active Realtime voice call.
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
        inputParameters:
        - name: call_id
          in: path
          type: string
          required: true
    authentication:
      type: bearer
      token: '{{env.OPENAI_API_KEY}}'
  exposes:
  - type: rest
    namespace: realtime-realtime-rest
    port: 8080
    description: REST adapter for OpenAI Realtime control plane.
    resources:
    - path: /v1/realtime/client_secrets
      name: realtime-client-secrets
      description: Create an ephemeral client secret for a Realtime session.
      operations:
      - method: POST
        name: createrealtimeclientsecret
        description: Create an ephemeral client secret.
        call: realtime-realtime.createrealtimeclientsecret
        with:
          body: rest.body
        outputParameters:
        - type: object
          mapping: $.
  - type: mcp
    namespace: realtime-realtime-mcp
    port: 9090
    transport: http
    description: MCP adapter for OpenAI Realtime.
    tools:
    - name: openai-create-realtime-client-secret
      description: Mint an ephemeral client secret for a Realtime WebRTC session.
      hints:
        readOnly: false
        destructive: false
        idempotent: false
      call: realtime-realtime.createrealtimeclientsecret
      with:
        body: tools.body
      outputParameters:
      - type: object
        mapping: $.
    - name: openai-hangup-realtime-call
      description: End a Realtime voice call.
      hints:
        readOnly: false
        destructive: true
        idempotent: true
      call: realtime-realtime.hangupreatimecall
      with:
        call_id: tools.call_id
      outputParameters:
      - type: object
        mapping: $.