# Transcribe Audio

Source: https://recoupable.dev/docs/api-reference/content/transcribe-audio

Transcribe audio into text with word-level timestamps. Pass one or more audio file URLs in `audio_urls`. Returns the full transcript and an array of timed segments.

## POST /api/content/transcribe

Full OpenAPI specification: https://recoupable.dev/docs/spec/content.json

## Authentication

This operation requires one of the security alternatives in the specification below. Security scheme definitions are included where present in the published specification.

[Authentication guide](https://recoupable.dev/docs/authentication)

## Operation and referenced schemas

```json
{
  "openapi": "3.1.0",
  "info": {
    "title": "Recoup API - Content",
    "description": "API documentation for the Recoup platform - an AI agent platform for the music industry",
    "license": {
      "name": "MIT"
    },
    "version": "1.0.0"
  },
  "servers": [
    {
      "url": "https://api.recoupable.dev"
    }
  ],
  "paths": {
    "/api/content/transcribe": {
      "post": {
        "description": "Transcribe audio into text with word-level timestamps. Pass one or more audio file URLs in `audio_urls`. Returns the full transcript and an array of timed segments.",
        "security": [
          {
            "apiKeyAuth": []
          },
          {
            "bearerAuth": []
          }
        ],
        "requestBody": {
          "description": "Audio transcription parameters",
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "$ref": "#/components/schemas/ContentCreateAudioRequest"
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "Song transcribed successfully",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/ContentCreateAudioResponse"
                }
              }
            }
          },
          "400": {
            "description": "Validation failed — invalid or missing request body fields",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/ContentErrorResponse"
                }
              }
            }
          },
          "401": {
            "description": "Unauthorized — invalid or missing API key",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/ContentErrorResponse"
                }
              }
            }
          },
          "500": {
            "description": "Internal server error",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/ContentErrorResponse"
                }
              }
            }
          }
        }
      }
    }
  },
  "components": {
    "schemas": {
      "ContentCreateAudioRequest": {
        "type": "object",
        "required": [
          "audio_urls"
        ],
        "properties": {
          "audio_urls": {
            "type": "array",
            "items": {
              "type": "string",
              "format": "uri"
            },
            "minItems": 1,
            "description": "Audio file URLs to transcribe"
          },
          "language": {
            "type": "string",
            "default": "en",
            "description": "Language code for transcription (e.g. en, es, fr). Defaults to en."
          },
          "chunk_level": {
            "type": "string",
            "enum": [
              "none",
              "segment",
              "word"
            ],
            "default": "word",
            "description": "Granularity of timestamp chunks. Defaults to word-level."
          },
          "diarize": {
            "type": "boolean",
            "default": false,
            "description": "Enable speaker diarization. Defaults to false."
          },
          "model": {
            "type": "string",
            "description": "fal.ai model ID. Defaults to fal-ai/whisper"
          }
        }
      },
      "ContentCreateAudioResponse": {
        "type": "object",
        "required": [
          "audioUrl",
          "fullLyrics",
          "segments",
          "segmentCount"
        ],
        "properties": {
          "audioUrl": {
            "type": "string",
            "description": "URL of the transcribed audio"
          },
          "fullLyrics": {
            "type": "string",
            "description": "Complete transcribed lyrics as a single string"
          },
          "segments": {
            "type": "array",
            "items": {
              "$ref": "#/components/schemas/ContentCreateAudioSegment"
            },
            "description": "Timestamped lyric segments"
          },
          "segmentCount": {
            "type": "number",
            "description": "Total number of segments returned"
          }
        }
      },
      "ContentErrorResponse": {
        "type": "object",
        "required": [
          "error"
        ],
        "properties": {
          "error": {
            "type": "string",
            "description": "Error message describing what went wrong",
            "example": "Unauthorized"
          }
        }
      },
      "ContentCreateAudioSegment": {
        "type": "object",
        "required": [
          "start",
          "end",
          "text"
        ],
        "properties": {
          "start": {
            "type": "number",
            "description": "Segment start time in seconds"
          },
          "end": {
            "type": "number",
            "description": "Segment end time in seconds"
          },
          "text": {
            "type": "string",
            "description": "Transcribed text for this segment"
          }
        }
      }
    },
    "securitySchemes": {
      "apiKeyAuth": {
        "type": "apiKey",
        "in": "header",
        "name": "x-api-key",
        "description": "Your Recoup API key. [Learn more](/quickstart#api-keys)."
      },
      "bearerAuth": {
        "type": "http",
        "scheme": "bearer"
      }
    }
  }
}
```