Pronunciation, pause, and emphasis controls applied to a TTS conversion. These are modeled honestly as data structures on the TTS output (word-level pronunciation replacements, timed pauses of 0-2 seconds, and emphasis markers), not as a standalone endpoint - they are carried within the text-to-speech job payload rather than a dedicated /pronunciations resource.
openapi: 3.0.0
info:
title: LOVO AI Genny API
version: '1.0'
description: >-
REST API for LOVO AI's Genny text-to-speech and AI voice generation
platform. Convert text into natural-sounding speech (synchronously or
asynchronously), browse the speaker/voice catalog with its styles, and
read team billing/usage information. Authenticate every request with the
X-API-KEY header carrying an API key generated at https://genny.lovo.ai.
TTS credits are deducted from the account associated with the API key.
Generated audio URLs are valid for 24 hours and should be downloaded for
further use. Endpoints and schemas here are grounded in Genny's published
OpenAPI document at https://api.genny.lovo.ai/api/docs-json.
contact:
name: LOVO AI
url: https://lovo.ai
servers:
- url: https://api.genny.lovo.ai
description: Genny API production
tags:
- name: Text-to-Speech
description: Convert text to speech synchronously or asynchronously and retrieve job results.
- name: Speakers
description: Retrieve the catalog of speakers/voices and their styles.
- name: Pronunciation
description: >-
Pronunciation, pause, and emphasis controls applied to a TTS conversion.
These are represented as data structures on the TTS output rather than a
standalone endpoint.
- name: Teams
description: Read team billing and usage information for the API key's account.
components:
securitySchemes:
X-API-KEY:
type: apiKey
in: header
name: X-API-KEY
description: API key generated at https://genny.lovo.ai (profile tab).
schemas:
Pronunciation:
type: object
description: A word-level pronunciation override applied to a TTS conversion.
properties:
sourceWord:
type: string
description: The original word as written in the input text.
targetWord:
type: string
description: The replacement spelling/phonetic form used for synthesis.
isReplaced:
type: boolean
description: Whether the source word was replaced during synthesis.
required:
- sourceWord
- targetWord
- isReplaced
Pause:
type: object
description: A pause inserted at a position within the synthesized text.
properties:
position:
type: number
description: Character position at which the pause is inserted.
value:
type: number
minimum: 0
maximum: 2
description: Pause duration in seconds (0 to 2).
required:
- position
- value
Emphasis:
type: object
description: An emphasis marker applied at a position within the synthesized text.
properties:
position:
type: number
description: Character position at which emphasis is applied.
value:
type: number
enum:
- 0.25
- 0.5
- 0.75
description: Emphasis strength.
required:
- position
- value
PublicSpeakerStyleResType:
type: object
properties:
id:
type: string
displayName:
type: string
deprecated:
type: boolean
description: Deprecated speaker styles should not be used in the TTS API.
sampleTtsUrl:
type: string
description: Sample TTS URL to preview the voice of the speaker.
required:
- id
- displayName
- deprecated
- sampleTtsUrl
GetSpeakersApiResponse:
type: object
properties:
id:
type: string
description: Speaker ID.
displayName:
type: string
description: Name of the speaker.
locale:
type: string
description: Locale of the speaker (for example en-US, en-GB, ko-KR).
gender:
type: string
enum:
- male
- female
- other
imageUrl:
type: string
description: Avatar URL of the speaker.
ageRange:
type: string
enum:
- child
- children
- young_adult
- mature
- mature_adult
- old
- other
speakerStyles:
$ref: '#/components/schemas/PublicSpeakerStyleResType'
required:
- id
- displayName
- locale
- gender
- imageUrl
PaginatedResDto:
type: object
properties:
totalCount:
type: number
description: Total item count available for pagination.
count:
type: number
description: Item count for the current page.
page:
type: number
description: Current page number.
limit:
type: number
description: Limit of items per page.
data:
type: array
items:
$ref: '#/components/schemas/GetSpeakersApiResponse'
required:
- totalCount
- count
- data
TextToSpeechRequest:
type: object
properties:
text:
type: string
minLength: 1
maxLength: 500
description: Text to be converted to audio.
example: Welcome to Genny!
speaker:
type: string
description: Speaker ID retrieved from the Retrieve Speakers endpoint.
example: 640f477d2babeb0024be422b
speakerStyle:
type: string
description: Speaker style ID for the chosen speaker. Only some speakers have multiple styles.
speed:
type: number
default: 1
minimum: 0.05
maximum: 3
description: Speed of the generated audio.
callbackUrls:
type: array
maxItems: 4
items:
type: string
description: >-
Callback URLs for an async job (max 4). A single POST callback with
the same payload as the Async Retrieve Job endpoint is sent on
completion. Endpoints must return a 2xx within 10 seconds.
required:
- text
- speaker
TextToSpeechSyncRequest:
type: object
properties:
text:
type: string
minLength: 1
maxLength: 500
description: Text to be converted to audio.
example: Welcome to Genny!
speaker:
type: string
description: Speaker ID retrieved from the Retrieve Speakers endpoint.
example: 640f477d2babeb0024be422b
speakerStyle:
type: string
description: Speaker style ID for the chosen speaker.
speed:
type: number
default: 1
minimum: 0.05
maximum: 3
description: Speed of the generated audio.
required:
- text
- speaker
JobErrorResponse:
type: object
properties:
code:
type: string
message:
type: string
required:
- code
- message
TextToSpeechOutput:
type: object
properties:
status:
type: string
enum:
- pending
- succeeded
- failed
description: Status of the individual TTS output.
text:
type: string
speaker:
type: string
speakerStyle:
type: string
speed:
type: number
pause:
type: array
items:
$ref: '#/components/schemas/Pause'
emphasis:
type: array
items:
$ref: '#/components/schemas/Emphasis'
pronunciations:
type: array
default: []
items:
$ref: '#/components/schemas/Pronunciation'
description: Pronunciations applied to the TTS request.
urls:
type: array
items:
type: string
description: Audio URLs of the TTS result (valid for 24 hours).
error:
$ref: '#/components/schemas/JobErrorResponse'
required:
- status
- text
- speaker
- speakerStyle
- speed
- pause
- emphasis
- pronunciations
GetJobResponse:
type: object
properties:
id:
type: string
example: 643e383551e2730025c5ae69
description: Job ID used to check the progress of the TTS job.
type:
type: string
enum:
- tts
- simple_tts
- dubbing
- localization
- subtitles
description: Type of the job. Currently only TTS is supported.
status:
type: string
enum:
- in_progress
- done
progress:
type: number
team:
type: string
workspace:
type: string
project:
type: string
error:
$ref: '#/components/schemas/JobErrorResponse'
createdAt:
type: string
format: date-time
description: TTS requested time.
estimatedTimeAt:
type: string
format: date-time
estimatedTimeMs:
type: number
callbackUrls:
type: array
items:
type: string
required:
- id
- type
- status
- progress
- team
- createdAt
- callbackUrls
TextToSpeechResponse:
allOf:
- $ref: '#/components/schemas/GetJobResponse'
- type: object
properties:
data:
type: array
items:
$ref: '#/components/schemas/TextToSpeechOutput'
required:
- data
TextToSpeechSyncResponse:
allOf:
- $ref: '#/components/schemas/GetJobResponse'
- type: object
properties:
data:
type: array
items:
$ref: '#/components/schemas/TextToSpeechOutput'
required:
- data
TeamForApiResDto:
type: object
properties:
name:
type: string
createdAt:
type: string
format: date-time
required:
- name
- createdAt
ApiUsageResDto:
type: object
properties:
type:
type: string
unit:
type: string
amount:
type: string
currentPeriodStart:
type: string
format: date-time
currentPeriodEnd:
type: string
format: date-time
required:
- type
- unit
- amount
Subscription:
type: object
properties:
status:
type: string
enum:
- active
- pending_pause
- paused
- trialing
- past_due
- canceled
- unpaid
- incomplete
- incomplete_expired
currentPeriodStart:
type: string
format: date-time
currentPeriodEnd:
type: string
format: date-time
description:
type: string
priceInterval:
type: string
enum:
- year
- month
- onetime
- day
usage:
type: array
items:
$ref: '#/components/schemas/ApiUsageResDto'
required:
- status
- currentPeriodStart
- currentPeriodEnd
- priceInterval
- usage
ApiTeamBillingInformationResDto:
type: object
properties:
team:
$ref: '#/components/schemas/TeamForApiResDto'
subscription:
$ref: '#/components/schemas/Subscription'
required:
- team
- subscription
security:
- X-API-KEY: []
paths:
/api/v1/tts:
post:
operationId: async-tts
summary: Async TTS
description: >-
Returns a TTS job. Poll the job status with GET /api/v1/tts/{jobId}
using the returned id, or supply callbackUrls to be notified on
completion.
tags:
- Text-to-Speech
security:
- X-API-KEY: []
requestBody:
required: true
content:
application/json:
schema:
$ref: '#/components/schemas/TextToSpeechRequest'
examples:
default:
value:
speaker: 640f477d2babeb0024be422b
text: Welcome to Genny!
responses:
'201':
description: Job entity used to fetch the status of the TTS job.
content:
application/json:
schema:
$ref: '#/components/schemas/GetJobResponse'
'400':
description: API key expired
'401':
description: API key invalid
'402':
description: No active subscription
'422':
description: API key not found
/api/v1/tts/sync:
post:
operationId: sync-tts
summary: Sync TTS
description: >-
Convert text to speech synchronously. Has a timeout of 90 seconds; if
the process does not complete in time, it returns a pending TTS job
(like Async TTS) whose status can be checked with GET
/api/v1/tts/{jobId}.
tags:
- Text-to-Speech
security:
- X-API-KEY: []
requestBody:
required: true
content:
application/json:
schema:
$ref: '#/components/schemas/TextToSpeechSyncRequest'
examples:
default:
value:
speaker: 640f477d2babeb0024be422b
text: Welcome to Genny!
responses:
'201':
description: Generated audio URLs if completed within 90 seconds, otherwise an incomplete TTS job.
content:
application/json:
schema:
$ref: '#/components/schemas/TextToSpeechSyncResponse'
'400':
description: API key expired
'401':
description: API key invalid
'402':
description: No active subscription
'422':
description: API key not found
/api/v1/tts/{jobId}:
get:
operationId: async-retrieve-job
summary: Async Retrieve Job
description: >-
Retrieve a TTS job by id. Returns generated audio URLs if the job is
successfully completed.
tags:
- Text-to-Speech
security:
- X-API-KEY: []
parameters:
- name: jobId
in: path
required: true
description: The job id returned by an Async or Sync TTS request.
schema:
type: string
responses:
'200':
description: The TTS job, including audio URLs when completed.
content:
application/json:
schema:
$ref: '#/components/schemas/TextToSpeechResponse'
'400':
description: API key expired
'401':
description: API key invalid
'422':
description: Job not found
/api/v1/speakers:
get:
operationId: retrieve-speakers
summary: Retrieve speakers
description: Retrieve all speakers with optional filtering and sorting. Supports pagination.
tags:
- Speakers
security:
- X-API-KEY: []
parameters:
- name: sort
in: query
required: false
description: >-
Sort by given order. Available fields are displayName, locale,
gender, speakerType, and ageRange. Example "displayName:1" (no
whitespace).
schema:
type: array
default:
- displayName:1
items:
type: string
- name: page
in: query
required: false
description: Number of pages to skip.
schema:
type: number
- name: limit
in: query
required: false
description: Number of speakers in each page.
schema:
type: number
responses:
'200':
description: A paginated list of speakers.
content:
application/json:
schema:
$ref: '#/components/schemas/PaginatedResDto'
'400':
description: API key expired
'401':
description: API key invalid
'422':
description: API key not found
/api/v1/teams/status:
get:
operationId: get-team-billing-information
summary: Get team billing information
description: Get team billing and usage information for the account associated with the API key.
tags:
- Teams
security:
- X-API-KEY: []
responses:
'200':
description: Team billing information.
content:
application/json:
schema:
$ref: '#/components/schemas/ApiTeamBillingInformationResDto'
'400':
description: API key expired
'401':
description: API key invalid
'422':
description: API key not found