Cartesia
Cartesia provides real-time text-to-speech, speech-to-text, voice, model training, and managed voice agent APIs.
What agents can do
Actions10
Create pronunciation dictionary
Create a reusable pronunciation dictionary for text-to-speech generation.
Delete pronunciation dictionary
Permanently delete one pronunciation dictionary by ID.
Get pronunciation dictionary
Return one pronunciation dictionary and its complete text-to-pronunciation mappings.
Get voice
Return synthesis-relevant details for one Cartesia voice by ID.
List accents
List supported accents, optionally filtered by language, locale, or voice-localization support.
List agent models
List language models available to Cartesia Managed Agents, including provider, latency, and pricing metadata.
List pronunciation dictionaries
Return one page of pronunciation dictionaries available to the connected account.
List voices
Search and filter Cartesia voices, returning one page of voice IDs and synthesis-relevant metadata.
2 moreFewer
Synthesize speech
Generate a downloadable audio file from one complete transcript using a selected Cartesia voice; usage is billed by transcript length.
Update pronunciation dictionary
Update a pronunciation dictionary and replace its mappings with the complete supplied item set.
How it connects
You paste an API key from Cartesia on a page Composio hosts, so the key never passes through Definable.
Keep the connection to yourself or share it with your workspace. Any action that writes or sends can wait for your approval.
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