TrueFoundry

TrueFoundry Audio API

Speech and audio processing

GitHub OpenAPI
Business capability
Speech & Voice AE-110.30

Operations 2

POST /audio/speech Create Speech #
POST /audio/transcriptions Create Transcription #

Documentation

📖
Documentation
https://www.truefoundry.com/docs/ai-gateway/intro-to-llm-gateway
📖
GettingStarted
https://www.truefoundry.com/docs/ai-gateway/quick-start
📖
Authentication
https://www.truefoundry.com/docs/ai-gateway/authentication

Specifications

⚙
OpenAPI
https://artifacts.apis.io/truefoundry/openapi/truefoundry-audio-api-openapi.yml

Schemas & Data

📊
JSONSchema
https://artifacts.apis.io/truefoundry/json-schema/truefoundry-chat-completion-schema.json

Other Resources

🔗
Reference
https://www.truefoundry.com/docs/api-reference
🔗
SpectralRules
https://artifacts.apis.io/truefoundry/rules/truefoundry-rules.yml
🔗
JSONLDContext
https://artifacts.apis.io/truefoundry/json-ld/truefoundry-context.jsonld
🔗
Vocabulary
https://artifacts.apis.io/truefoundry/vocabulary/truefoundry-vocabulary.yml

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OpenAPI Specification

truefoundry-audio-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  title: TrueFoundry AI Gateway Audio API
  description: The TrueFoundry AI Gateway API is an OpenAI-compatible proxy layer providing unified access to 1000+ language models across 30+ providers through a single endpoint. It supports chat completions, embeddings, image generation, audio processing, batch operations, file management, content moderation, and model management. The gateway provides centralized authentication, rate limiting, budget controls, observability, and MCP server orchestration.
  version: 1.0.0
  contact:
    name: TrueFoundry Support
    url: https://www.truefoundry.com/
    email: support@truefoundry.com
  termsOfService: https://www.truefoundry.com/privacy-policy
servers:
- url: https://app.truefoundry.com/api/llm
  description: TrueFoundry AI Gateway (default control plane)
- url: https://{control_plane_url}/api/llm
  description: Self-hosted TrueFoundry control plane
  variables:
    control_plane_url:
      default: app.truefoundry.com
      description: Your TrueFoundry control plane URL
security:
- BearerAuth: []
tags:
- name: Audio
  description: Speech and audio processing
paths:
  /audio/speech:
    post:
      summary: Create Speech
      description: Generate audio speech from text input (text-to-speech).
      operationId: createSpeech
      tags:
      - Audio
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - model
              - input
              - voice
              properties:
                model:
                  type: string
                  description: TTS model identifier
                input:
                  type: string
                  description: Text to synthesize
                voice:
                  type: string
                  description: Voice selection
                response_format:
                  type: string
                  enum:
                  - mp3
                  - opus
                  - aac
                  - flac
                speed:
                  type: number
                  minimum: 0.25
                  maximum: 4.0
      responses:
        '200':
          description: Audio binary data
          content:
            audio/mpeg:
              schema:
                type: string
                format: binary
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /audio/transcriptions:
    post:
      summary: Create Transcription
      description: Transcribe audio to text (speech-to-text).
      operationId: createTranscription
      tags:
      - Audio
      requestBody:
        required: true
        content:
          multipart/form-data:
            schema:
              type: object
              required:
              - file
              - model
              properties:
                file:
                  type: string
                  format: binary
                  description: Audio file to transcribe
                model:
                  type: string
                language:
                  type: string
                  description: ISO 639-1 language code
                prompt:
                  type: string
                response_format:
                  type: string
                  enum:
                  - json
                  - text
                  - srt
                  - verbose_json
                  - vtt
      responses:
        '200':
          description: Transcription result
          content:
            application/json:
              schema:
                type: object
                properties:
                  text:
                    type: string
        '400':
          $ref: '#/components/responses/BadRequest'
components:
  responses:
    Unauthorized:
      description: Unauthorized - invalid or missing API key
      content:
        application/json:
          schema:
            type: object
            properties:
              error:
                type: object
                properties:
                  message:
                    type: string
                  type:
                    type: string
    BadRequest:
      description: Bad request - invalid parameters
      content:
        application/json:
          schema:
            type: object
            properties:
              error:
                type: object
                properties:
                  message:
                    type: string
                  type:
                    type: string
                  code:
                    type: string
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      description: TrueFoundry API key (JWT format)