# Cartesia Docs

- [API (214 pages)](https://docs.cartesia.ai/_llms/en/api.txt): Documentation for API.

## Models

### Get started

#### Overview

- [Welcome to Cartesia](https://docs.cartesia.ai/get-started/overview.md): Cartesia is an AI lab building real-time voice models and agents.

#### Start building

- [Realtime Text-to-Speech Quickstart](https://docs.cartesia.ai/get-started/realtime-text-to-speech-quickstart.md): Stream text to Cartesia over a WebSocket and receive audio in real time.
- [Realtime Speech-to-Text Quickstart](https://docs.cartesia.ai/get-started/realtime-speech-to-text-quickstart.md): Stream audio to Ink 2 and receive transcripts in real time.
- [Authenticate your applications](https://docs.cartesia.ai/get-started/authenticate-your-client-applications.md): Use access tokens in browsers and API keys on servers
- [Pricing](https://docs.cartesia.ai/pricing.md): How Cartesia charges for usage

#### Developers

- [Client Libraries](https://docs.cartesia.ai/tools/client-libraries.md): Use the official JavaScript/TypeScript and Python SDKs to call the Cartesia API.
- [AI Agent Guide](https://docs.cartesia.ai/tools/ai/agent-guide.md): Setup your agents with Cartesia skills, MCP, and docs
- [Agent Skills](https://docs.cartesia.ai/tools/ai/agent-skills.md): Teach your agents how to build with Cartesia
- [MCP](https://docs.cartesia.ai/tools/ai/mcp.md): Connect Cartesia MCP in Cursor or Claude Code to run TTS, STT, voices, and pronunciation dictionaries from your agent.
- [LLMs documentation files](https://docs.cartesia.ai/tools/ai/llms-txt.md): Machine-readable index files for assistants and tooling that ingest Cartesia documentation.

#### Integrations

- [Integrations](https://docs.cartesia.ai/integrations/overview.md)
- [Partner Integrations](https://docs.cartesia.ai/integrations/partners.md): Official Cartesia integrations on third-party platforms
- [LiveKit](https://docs.cartesia.ai/integrations/live-kit.md): Realtime rooms and agents via the Cartesia plugin or LiveKit Inference
- [Pipecat](https://docs.cartesia.ai/integrations/pipecat.md): Voice and multi-modal agents with official Cartesia TTS/STT services

##### Community

- [Community Integrations](https://docs.cartesia.ai/integrations/community/index.md): Integrations built and maintained by third-party developers
- [Anam + Cartesia](https://docs.cartesia.ai/integrations/community/anam-cartesia.md): Use a Cartesia Sonic TTS voice in an Anam interactive avatar session
- [Genesys + Cartesia Sonic](https://docs.cartesia.ai/integrations/community/genesys-tts-connector.md): Configure the Genesys TTS Connector integration to synthesize speech with Cartesia
- [LiveAvatar + Cartesia](https://docs.cartesia.ai/integrations/community/liveavatar-cartesia.md): Drive a LiveAvatar (by HeyGen) interactive avatar with a Cartesia Sonic TTS voice
- [TrueFoundry + Cartesia](https://docs.cartesia.ai/integrations/community/truefoundry.md): Route Cartesia TTS and STT through TrueFoundry's AI Gateway
- [Rasa](https://docs.cartesia.ai/integrations/rasa.md): Voice assistants with Cartesia as the TTS backend
- [Tencent RTC](https://docs.cartesia.ai/integrations/tencent-rtc.md): Realtime media with Cartesia for conversational AI workloads
- [Thoughtly](https://docs.cartesia.ai/integrations/thoughtly.md): No-code phone agents
- [Twilio](https://docs.cartesia.ai/integrations/twilio.md): Call a phone with speech synthesized by Sonic
- [Bandwidth + Cartesia](https://docs.cartesia.ai/integrations/community/bandwidth-cartesia.md): Run a two-way voice agent on a Bandwidth phone call with Cartesia Ink 2 speech-to-text and Sonic text-to-speech
- [Vision Agents by Stream](https://docs.cartesia.ai/integrations/vision-agents-by-stream.md): Agent framework with a Cartesia TTS plugin

### Text-to-Speech

#### Sonic

- [Sonic 3.6](https://docs.cartesia.ai/build-with-cartesia/tts-models/latest.md)
- [Build with Sonic](https://docs.cartesia.ai/build-with-cartesia/capability-guides/tts.md)

#### Choose a voice

- [Choosing a Voice](https://docs.cartesia.ai/build-with-cartesia/capability-guides/choosing-a-voice.md): How to pick the best voice for your Voice Agents
- [Multilingual Voices](https://docs.cartesia.ai/build-with-cartesia/capability-guides/multilingual-voices.md): Reach a global audience with one voice that speaks multiple languages and accents.
- [Instant Voice Clone](https://docs.cartesia.ai/build-with-cartesia/capability-guides/clone-voices.md): Create a custom voice in seconds from a short recording
- [Pro Voice Clone](https://docs.cartesia.ai/build-with-cartesia/capability-guides/clone-voices-pro.md): Create a near-exact voice replica, trained on 30+ minutes of your audio

#### Control the voice

- [Prompting tips](https://docs.cartesia.ai/build-with-cartesia/capability-guides/prompting-tips.md): Get natural-sounding output from Sonic with minimal prompt engineering.
- [Custom Pronunciations](https://docs.cartesia.ai/build-with-cartesia/capability-guides/custom-pronunciations.md): Specify custom pronunciations for words that are hard to get right, like proper nouns or domain-specific terms.
- [Text Normalization](https://docs.cartesia.ai/build-with-cartesia/capability-guides/text-normalization.md): Control how written text becomes spoken text, and debugging tips.
- [Volume, Speed, and Emotion](https://docs.cartesia.ai/build-with-cartesia/capability-guides/volume-speed-emotion.md): Control the speed, volume, and emotion of generated speech.
- [SSML Tags](https://docs.cartesia.ai/build-with-cartesia/capability-guides/ssml-tags.md): Laughter, pauses, and mid-transcript controls
- [Advanced capabilities](https://docs.cartesia.ai/build-with-cartesia/capability-guides/advanced-capabilities.md): Use Hinglish code-switching and text normalizers to control how Sonic speaks specialized content.

#### Streaming

- [Compare TTS Endpoints](https://docs.cartesia.ai/use-the-api/compare-tts-endpoints.md): How bytes, SSE, and WebSocket differ for text-to-speech, and when to use each.
- [Stream Inputs using Continuations](https://docs.cartesia.ai/build-with-cartesia/capability-guides/stream-inputs-using-continuations.md): Learn how to stream input text to Sonic TTS
- [Contexts and Continuations](https://docs.cartesia.ai/use-the-api/tts-websocket/contexts.md): Generating audio from partial transcripts
- [Context Flushing and Flush IDs](https://docs.cartesia.ai/use-the-api/tts-websocket/context-flushing-and-flush-i-ds.md): Separating a continuation into multiple parts
- [Buffering](https://docs.cartesia.ai/use-the-api/tts-websocket/buffering.md): Control how text is buffered before speech generation to balance prosody and latency

#### Audio output

- [Output Format](https://docs.cartesia.ai/build-with-cartesia/capability-guides/tts-output-audio-format.md): How to find the right parameters for output audio
- [Caching Audio for Stock Responses](https://docs.cartesia.ai/build-with-cartesia/capability-guides/tts-caching.md): Pre-generate stock TTS phrases as raw PCM, then interleave them with live WebSocket audio to cut latency and credits

#### Older models

- [Sonic 3.5](https://docs.cartesia.ai/build-with-cartesia/tts-models/sonic-3-5.md)
- [Migrating from Sonic 3 to Sonic 3.5](https://docs.cartesia.ai/build-with-cartesia/tts-models/sonic-3-to-sonic-3-5.md): What's new in Sonic 3.5 and what to know before you switch.
- [Older Models](https://docs.cartesia.ai/build-with-cartesia/tts-models/older-models.md)
- [Deprecated Models](https://docs.cartesia.ai/build-with-cartesia/tts-models/api-changes.md)

### Speech-to-Text

- [Ink 2](https://docs.cartesia.ai/build-with-cartesia/stt/latest.md)
- [Older Models](https://docs.cartesia.ai/build-with-cartesia/stt/older-models.md)

#### Guides

- [Build with Ink](https://docs.cartesia.ai/build-with-cartesia/stt/guides.md)
- [Turn Detection](https://docs.cartesia.ai/use-the-api/stt/turns.md): Detect user turns automatically, no separate VAD required
- [Keyterm Prompting](https://docs.cartesia.ai/use-the-api/stt/keyterms.md): Improve transcription accuracy for specific words and phrases
- [Compare STT Endpoints](https://docs.cartesia.ai/use-the-api/stt/compare-endpoints.md): There are 3 ways to integrate with Cartesia's speech-to-text API
- [Audio Input](https://docs.cartesia.ai/build-with-cartesia/stt/audio-input.md): How to find the right encoding and sample rate for realtime audio
- [Migration Guides](https://docs.cartesia.ai/use-the-api/stt/migrations.md): The differences between Ink and other models

##### Troubleshooting

- [Troubleshooting](https://docs.cartesia.ai/use-the-api/stt/troubleshooting/index.md): Transcription errors, high latency, server errors
- [Realtime STT (Auto)](https://docs.cartesia.ai/use-the-api/stt/troubleshooting/auto.md): Transcript errors, high latency, and server errors for `/stt/turns/websocket`
- [Realtime STT (Manual)](https://docs.cartesia.ai/use-the-api/stt/troubleshooting/manual.md): Transcript errors, high latency, and server errors for `/stt/websocket`

## Agents

### Get started

- [Managed Agents](https://docs.cartesia.ai/agents/introduction.md): Create and run realtime voice agents with Cartesia.

### Agent management

- [Agent configuration](https://docs.cartesia.ai/agents/configuration.md): Configure how an agent behaves, listens, speaks, and acts.
- [Dynamic variables](https://docs.cartesia.ai/agents/dynamic-variables.md): Personalize each call with customer data and values from your tools.
- [LLMs](https://docs.cartesia.ai/agents/models.md): Choose the LLM that generates agent responses.

### Tools

- [Tools](https://docs.cartesia.ai/agents/tools.md): Give an agent actions it can invoke during a call.
- [System tools](https://docs.cartesia.ai/agents/system-tools.md): Configure built-in actions for calls and telephony.
- [Webhook tools](https://docs.cartesia.ai/agents/webhook-tools.md): Let an agent call an HTTPS endpoint on your server.
- [Client tools](https://docs.cartesia.ai/agents/client-tools.md): Run functions in your application over the WebSocket API.

### Audio integration

- [Audio integration](https://docs.cartesia.ai/line/integrations/overview.md): Connect an application or phone number to an agent.
- [WebSocket API](https://docs.cartesia.ai/line/integrations/websocket-api.md): Stream audio and events between your application and an agent.

### Telephony

- [Phone numbers](https://docs.cartesia.ai/line/integrations/telephony/phone-numbers.md): Connect phone numbers to your agents for inbound and outbound calls.
- [Cartesia numbers](https://docs.cartesia.ai/line/integrations/telephony/cartesia-numbers.md): Provision and manage Cartesia phone numbers for your agents.
- [Twilio integration](https://docs.cartesia.ai/line/integrations/telephony/twilio/integration.md): Import phone numbers from your Twilio account.
- [Regional routing](https://docs.cartesia.ai/line/integrations/telephony/twilio/regional-routing.md): How Twilio regions affect call routing and credential scoping.
- [SIP trunking](https://docs.cartesia.ai/line/integrations/telephony/sip-trunking.md): Connect a SIP trunk to use your own carrier with Cartesia agents.
- [Outbound calling](https://docs.cartesia.ai/line/integrations/telephony/outbound-dialing.md)
- [Batch calling](https://docs.cartesia.ai/line/integrations/telephony/batch-calling.md)

### Evaluations

- [Metrics](https://docs.cartesia.ai/line/evaluations/metrics.md): Measure agent performance on completed calls.
- [Results](https://docs.cartesia.ai/line/evaluations/results.md): Review and export metric results for completed calls.

### Migration

- [Migrate from the Line SDK](https://docs.cartesia.ai/agents/migrate-from-line-sdk.md): Move a Line SDK agent to Managed Agents, feature by feature.

## Examples

### Text-to-Speech (WebSocket)

- [WebSocket Basic](https://docs.cartesia.ai/examples/tts-websocket-basic.md): Basic WebSocket usage with websocket_connect() context manager.
- [WebSocket with Input Continuations](https://docs.cartesia.ai/examples/tts-websocket-continuations.md): Streaming a transcript split into multiple parts, using continuations.
- [WebSocket Flushing](https://docs.cartesia.ai/examples/tts-websocket-flushing.md): Demonstrates manual flushing to separate audio from different transcripts.
- [WebSocket Emotion Control](https://docs.cartesia.ai/examples/tts-websocket-emotion.md): Demonstrates changing emotion mid-stream using generation_config.
- [WebSocket Speed Control](https://docs.cartesia.ai/examples/tts-websocket-speed.md): Demonstrates changing speed mid-stream using generation_config.
- [WebSocket Concurrent Contexts](https://docs.cartesia.ai/examples/tts-websocket-concurrent-contexts.md): Two contexts on one connection, each using ctx.receive() to get their own audio.
- [WebSocket Response Handling](https://docs.cartesia.ai/examples/tts-websocket-response-handling.md): WebSocket response type handling.

### Text-to-Speech (SSE)

- [SSE Streaming](https://docs.cartesia.ai/examples/tts-sse-basic.md): Basic SSE streaming.
- [SSE with Word Timestamps](https://docs.cartesia.ai/examples/tts-sse-with-timestamps.md): SSE streaming with word timestamps.
- [SSE with Phoneme Timestamps](https://docs.cartesia.ai/examples/tts-sse-with-phoneme-timestamps.md): SSE streaming with phoneme timestamps.

### Text-to-Speech (Batch)

- [Generate to File](https://docs.cartesia.ai/examples/tts-generate-to-file.md): Use generate() and write_to_file() to write a wav file.
- [Create Infill Audio](https://docs.cartesia.ai/examples/infill-create.md): Create infill audio between two clips.

### Speech-to-Text

- [Realtime STT (Auto)](https://docs.cartesia.ai/examples/stt-auto-finalize-websocket.md): Realtime transcription with native turn detection — recommended for voice agents.
- [Realtime STT (Manual)](https://docs.cartesia.ai/examples/stt-manual-finalize-websocket.md): Realtime transcription where you control the user turn. Recommended for push-to-talk apps.
- [Batch STT](https://docs.cartesia.ai/examples/stt-transcribe.md): Transcribe pre-recorded audio files.

### Voices

- [List Voices](https://docs.cartesia.ai/examples/voices-list.md): List voices with pagination.
- [Get a Voice](https://docs.cartesia.ai/examples/voices-get.md): Get a specific voice.
- [Clone a Voice](https://docs.cartesia.ai/examples/voices-clone.md): Clone a voice from an audio clip.
- [Update a Voice](https://docs.cartesia.ai/examples/voices-update.md): Update a voice.
- [Delete a Voice](https://docs.cartesia.ai/examples/voices-delete.md): Delete a voice.

### Browsers

- [Play Audio in Browser](https://docs.cartesia.ai/examples/tts-play-audio.md): Generate a wav and play it using an <audio> element.
- [Download Audio File](https://docs.cartesia.ai/examples/tts-download-file.md): Generate audio and trigger a file download in the browser.
- [WebSocket Stream to Web Audio](https://docs.cartesia.ai/examples/tts-websocket-stream-audio.md): Stream audio from a WebSocket and play it in real-time with Web Audio API.
- [WebSocket Low-Latency Playback](https://docs.cartesia.ai/examples/tts-websocket-low-latency.md): Play audio chunks as they arrive for lowest latency.

### Integrations

- [Next.js Full Example](https://docs.cartesia.ai/examples/nextjs.md): A complete Next.js application with batch TTS, HTTP streaming, and STT transcription.

### Best Practices

- [Error Handling](https://docs.cartesia.ai/examples/error-handling.md): Example of error handling with SDK exceptions.

## Enterprise

### Overview

- [Set up SSO](https://docs.cartesia.ai/enterprise/set-up-sso.md): Configure Single Sign-On (SSO) for your Enterprise organization directly from the Cartesia Playground.
- [Set up an organization](https://docs.cartesia.ai/enterprise/set-up-an-organization.md)
- [Zero Data Retention](https://docs.cartesia.ai/enterprise/zero-data-retention.md): Zero Data Retention (ZDR) is available to Cartesia Enterprise customers for our Text-to-Speech (TTS) and Speech-to-Text (STT) APIs.
- [Regional endpoints](https://docs.cartesia.ai/enterprise/regional-endpoints.md): Dedicated regional deployments are available to Cartesia Enterprise customers to support data sovereignty requirements.

## Changelog

### By year

- [Changelog 2026](https://docs.cartesia.ai/changelog/2026.md): Product, API, and platform changes for 2026
- [Changelog 2025](https://docs.cartesia.ai/changelog/2025.md): Product, API, and platform changes for 2025
- [Changelog 2024](https://docs.cartesia.ai/changelog/2024.md): Product, API, and platform changes for 2024

## Other

- [Delete Agent](https://docs.cartesia.ai/2026-03-01/api-reference/agents/agents/delete.md)
- [Get Agent](https://docs.cartesia.ai/2026-03-01/api-reference/agents/agents/get.md): Returns the details of a specific agent
- [List Agents](https://docs.cartesia.ai/2026-03-01/api-reference/agents/agents/list.md): Lists all agents associated with your account
- [List Templates](https://docs.cartesia.ai/2026-03-01/api-reference/agents/agents/templates.md): List of public, Cartesia-provided agent templates to help you get started
- [Update Agent](https://docs.cartesia.ai/2026-03-01/api-reference/agents/agents/update.md)
- [Get Call Runtime Logs](https://docs.cartesia.ai/2026-03-01/api-reference/agents/calls/get-call-logs.md)
- [Get Deployment](https://docs.cartesia.ai/2026-03-01/api-reference/agents/deployments/get-deployment.md): Get a deployment by its ID.
- [List Deployments](https://docs.cartesia.ai/2026-03-01/api-reference/agents/deployments/list-deployments.md): List of all deployments associated with an agent.
- [Create Document](https://docs.cartesia.ai/2026-03-01/api-reference/agents/documents/create.md): Upload a document into a [knowledge base](/line/knowledge-base) folder
- [Bulk Create Documents](https://docs.cartesia.ai/2026-03-01/api-reference/agents/documents/create-bulk.md): Upload up to 100 [knowledge base](/line/knowledge-base) documents in a single request
- [Delete Document](https://docs.cartesia.ai/2026-03-01/api-reference/agents/documents/delete.md): Delete a [knowledge base](/line/knowledge-base) document.
- [Get Document](https://docs.cartesia.ai/2026-03-01/api-reference/agents/documents/get.md): Returns the details of a single [knowledge base](/line/knowledge-base) document, including its full content.
- [List Documents](https://docs.cartesia.ai/2026-03-01/api-reference/agents/documents/list.md): List all [knowledge base](/line/knowledge-base) documents in your organization
- [Update Document](https://docs.cartesia.ai/2026-03-01/api-reference/agents/documents/update.md): Update a [knowledge base](/line/knowledge-base) document's name, content, metadata, or folder
- [Create Folder](https://docs.cartesia.ai/2026-03-01/api-reference/agents/folders/create.md): Create a [knowledge base](/line/knowledge-base) folder
- [Delete Folder](https://docs.cartesia.ai/2026-03-01/api-reference/agents/folders/delete.md): Delete a [knowledge base](/line/knowledge-base) folder
- [Get Folder](https://docs.cartesia.ai/2026-03-01/api-reference/agents/folders/get.md): Returns the details of a single [knowledge base](/line/knowledge-base) folder, including its documents and agents that have access to it
- [List Folders](https://docs.cartesia.ai/2026-03-01/api-reference/agents/folders/list.md): List [knowledge base](/line/knowledge-base) folders
- [Update Folder](https://docs.cartesia.ai/2026-03-01/api-reference/agents/folders/update.md): Update a [knowledge base](/line/knowledge-base) folder's name, parent, documents, or agents
- [Create Webhook](https://docs.cartesia.ai/2026-03-01/api-reference/agents/webhooks/create.md): Register a webhook endpoint. Cartesia POSTs [call events](/line/infrastructure/observability#webhooks) to its `url` for every agent the webhook is attached to. Attach a webhook to an agent by setting the agent's `webhook_id` with [Update Agent](/api-reference/agents/agents/update).
- [Delete Webhook](https://docs.cartesia.ai/2026-03-01/api-reference/agents/webhooks/delete.md): Delete a webhook. Detach it from any agents first by clearing their `webhook_id`.
- [Get Webhook](https://docs.cartesia.ai/2026-03-01/api-reference/agents/webhooks/get.md): Returns the details of a single webhook. The `secret` is omitted.
- [List Webhooks](https://docs.cartesia.ai/2026-03-01/api-reference/agents/webhooks/list.md): List the webhooks in your organization. The `secret` is omitted.
- [Update Webhook](https://docs.cartesia.ai/2026-03-01/api-reference/agents/webhooks/update.md): Update a webhook's `url`, `secret`, or `display_name`. Omit `secret` to leave the existing secret unchanged.
- [Agents (WebSocket)](https://docs.cartesia.ai/2026-03-01/api-reference/agents/websocket.md): Stream audio between your application and a hosted Line voice agent over a single bidirectional WebSocket. Use this for web apps, mobile apps, or to bridge your own telephony provider into a Line agent.
- [Delete Agent](https://docs.cartesia.ai/api-reference/agents/agents/delete.md)
- [Get Agent](https://docs.cartesia.ai/api-reference/agents/agents/get.md): Returns the details of a specific agent
- [List Agents](https://docs.cartesia.ai/api-reference/agents/agents/list.md): Lists all agents associated with your account
- [Agent Phone Numbers](https://docs.cartesia.ai/api-reference/agents/agents/phone-numbers.md)
- [List Templates](https://docs.cartesia.ai/api-reference/agents/agents/templates.md): List of public, Cartesia-provided agent templates to help you get started
- [Update Agent](https://docs.cartesia.ai/api-reference/agents/agents/update.md)
- [Get Call Runtime Logs](https://docs.cartesia.ai/api-reference/agents/calls/get-call-logs.md)
- [Get Deployment](https://docs.cartesia.ai/api-reference/agents/deployments/get-deployment.md): Get a deployment by its ID.
- [List Deployments](https://docs.cartesia.ai/api-reference/agents/deployments/list-deployments.md): List of all deployments associated with an agent.
- [Create Document](https://docs.cartesia.ai/api-reference/agents/documents/create.md): Upload a document into a [knowledge base](/line/knowledge-base) folder
- [Bulk Create Documents](https://docs.cartesia.ai/api-reference/agents/documents/create-bulk.md): Upload up to 100 [knowledge base](/line/knowledge-base) documents in a single request
- [Delete Document](https://docs.cartesia.ai/api-reference/agents/documents/delete.md): Delete a [knowledge base](/line/knowledge-base) document.
- [Get Document](https://docs.cartesia.ai/api-reference/agents/documents/get.md): Returns the details of a single [knowledge base](/line/knowledge-base) document, including its full content.
- [List Documents](https://docs.cartesia.ai/api-reference/agents/documents/list.md): List all [knowledge base](/line/knowledge-base) documents in your organization
- [Update Document](https://docs.cartesia.ai/api-reference/agents/documents/update.md): Update a [knowledge base](/line/knowledge-base) document's name, content, metadata, or folder
- [Create Folder](https://docs.cartesia.ai/api-reference/agents/folders/create.md): Create a [knowledge base](/line/knowledge-base) folder
- [Delete Folder](https://docs.cartesia.ai/api-reference/agents/folders/delete.md): Delete a [knowledge base](/line/knowledge-base) folder
- [Get Folder](https://docs.cartesia.ai/api-reference/agents/folders/get.md): Returns the details of a single [knowledge base](/line/knowledge-base) folder, including its documents and agents that have access to it
- [List Folders](https://docs.cartesia.ai/api-reference/agents/folders/list.md): List [knowledge base](/line/knowledge-base) folders
- [Update Folder](https://docs.cartesia.ai/api-reference/agents/folders/update.md): Update a [knowledge base](/line/knowledge-base) folder's name, parent, documents, or agents
- [Create Webhook](https://docs.cartesia.ai/api-reference/agents/webhooks/create.md): Register a webhook endpoint. Cartesia POSTs [call events](/line/infrastructure/observability#webhooks) to its `url` for every agent the webhook is attached to. Attach a webhook to an agent by setting the agent's `webhook_id` with [Update Agent](/api-reference/agents/agents/update).
- [Delete Webhook](https://docs.cartesia.ai/api-reference/agents/webhooks/delete.md): Delete a webhook. Detach it from any agents first by clearing their `webhook_id`.
- [Get Webhook](https://docs.cartesia.ai/api-reference/agents/webhooks/get.md): Returns the details of a single webhook. The `secret` is omitted.
- [List Webhooks](https://docs.cartesia.ai/api-reference/agents/webhooks/list.md): List the webhooks in your organization. The `secret` is omitted.
- [Update Webhook](https://docs.cartesia.ai/api-reference/agents/webhooks/update.md): Update a webhook's `url`, `secret`, or `display_name`. Omit `secret` to leave the existing secret unchanged.
- [Agents (WebSocket)](https://docs.cartesia.ai/api-reference/agents/websocket.md): Stream audio between your application and a hosted Line voice agent over a single bidirectional WebSocket. Use this for web apps, mobile apps, or to bridge your own telephony provider into a Line agent.
- [IPA Phonemes](https://docs.cartesia.ai/build-with-cartesia/capability-guides/phonemes.md): Provide precise pronunciation guidance using IPA phonemes.
- [エージェントを削除](https://docs.cartesia.ai/ja-jp/api-reference/agents/agents/delete.md)
- [エージェントを取得](https://docs.cartesia.ai/ja-jp/api-reference/agents/agents/get.md): Returns the details of a specific agent
- [エージェント一覧](https://docs.cartesia.ai/ja-jp/api-reference/agents/agents/list.md): Lists all agents associated with your account
- [エージェントの電話番号](https://docs.cartesia.ai/ja-jp/api-reference/agents/agents/phone-numbers.md)
- [テンプレート一覧](https://docs.cartesia.ai/ja-jp/api-reference/agents/agents/templates.md): List of public, Cartesia-provided agent templates to help you get started
- [エージェントを更新](https://docs.cartesia.ai/ja-jp/api-reference/agents/agents/update.md)
- [コールのランタイムログを取得](https://docs.cartesia.ai/ja-jp/api-reference/agents/calls/get-call-logs.md)
- [デプロイメントを取得](https://docs.cartesia.ai/ja-jp/api-reference/agents/deployments/get-deployment.md): Get a deployment by its ID.
- [デプロイメント一覧](https://docs.cartesia.ai/ja-jp/api-reference/agents/deployments/list-deployments.md): List of all deployments associated with an agent.
- [ドキュメントを作成](https://docs.cartesia.ai/ja-jp/api-reference/agents/documents/create.md): Upload a document into a [knowledge base](/line/knowledge-base) folder
- [ドキュメントを一括作成](https://docs.cartesia.ai/ja-jp/api-reference/agents/documents/create-bulk.md): Upload up to 100 [knowledge base](/line/knowledge-base) documents in a single request
- [ドキュメントを削除](https://docs.cartesia.ai/ja-jp/api-reference/agents/documents/delete.md): Delete a [knowledge base](/line/knowledge-base) document.
- [ドキュメントを取得](https://docs.cartesia.ai/ja-jp/api-reference/agents/documents/get.md): Returns the details of a single [knowledge base](/line/knowledge-base) document, including its full content.
- [ドキュメント一覧](https://docs.cartesia.ai/ja-jp/api-reference/agents/documents/list.md): List all [knowledge base](/line/knowledge-base) documents in your organization
- [ドキュメントを更新](https://docs.cartesia.ai/ja-jp/api-reference/agents/documents/update.md): Update a [knowledge base](/line/knowledge-base) document's name, content, metadata, or folder
- [フォルダを作成](https://docs.cartesia.ai/ja-jp/api-reference/agents/folders/create.md): Create a [knowledge base](/line/knowledge-base) folder
- [フォルダを削除](https://docs.cartesia.ai/ja-jp/api-reference/agents/folders/delete.md): Delete a [knowledge base](/line/knowledge-base) folder
- [フォルダを取得](https://docs.cartesia.ai/ja-jp/api-reference/agents/folders/get.md): Returns the details of a single [knowledge base](/line/knowledge-base) folder, including its documents and agents that have access to it
- [フォルダ一覧](https://docs.cartesia.ai/ja-jp/api-reference/agents/folders/list.md): List [knowledge base](/line/knowledge-base) folders
- [フォルダを更新](https://docs.cartesia.ai/ja-jp/api-reference/agents/folders/update.md): Update a [knowledge base](/line/knowledge-base) folder's name, parent, documents, or agents
- [Webhook を作成](https://docs.cartesia.ai/ja-jp/api-reference/agents/webhooks/create.md): Register a webhook endpoint. Cartesia POSTs [call events](/line/infrastructure/observability#webhooks) to its `url` for every agent the webhook is attached to. Attach a webhook to an agent by setting the agent's `webhook_id` with [Update Agent](/api-reference/agents/agents/update).
- [Webhook を削除](https://docs.cartesia.ai/ja-jp/api-reference/agents/webhooks/delete.md): Delete a webhook. Detach it from any agents first by clearing their `webhook_id`.
- [Webhook を取得](https://docs.cartesia.ai/ja-jp/api-reference/agents/webhooks/get.md): Returns the details of a single webhook. The `secret` is omitted.
- [Webhook 一覧](https://docs.cartesia.ai/ja-jp/api-reference/agents/webhooks/list.md): List the webhooks in your organization. The `secret` is omitted.
- [Webhook を更新](https://docs.cartesia.ai/ja-jp/api-reference/agents/webhooks/update.md): Update a webhook's `url`, `secret`, or `display_name`. Omit `secret` to leave the existing secret unchanged.
- [エージェント（WebSocket）](https://docs.cartesia.ai/ja-jp/api-reference/agents/websocket.md): Stream audio between your application and a hosted Line voice agent over a single bidirectional WebSocket. Use this for web apps, mobile apps, or to bridge your own telephony provider into a Line agent.
- [IPA 音素](https://docs.cartesia.ai/ja-jp/build-with-cartesia/capability-guides/phonemes.md): IPA 音素を使って正確な発音指示を行います。

## OpenAPI Specs

- [latest](/latest.yml)
- [api](/2026-03-01/api.yml)
- [api](/2024-11-13/api.yml)
- [api](/2024-06-10/api.yml)

## AsyncAPI Specs

- [asyncapi](/2024-06-10/asyncapi.yml)
- [asyncapi](/2024-11-13/asyncapi.yml)
- [asyncapi](/2026-03-01/asyncapi.yml)
- [asyncapi](/2026-08-14/asyncapi.yml)
- [asyncapi](/asyncapi.yml)

> The links below point to documentation indexes. Follow each `/_llms/` index recursively until you reach documentation pages.

## Indexes

- [English / API (214 pages)](https://docs.cartesia.ai/_llms/en/api.txt): Documentation for English / API.
- [Japanese (241 pages)](https://docs.cartesia.ai/_llms/ja-jp.txt): Documentation for Japanese.
- [Japanese / API リファレンス (131 pages)](https://docs.cartesia.ai/_llms/ja-jp/api.txt): Documentation for Japanese / API リファレンス.


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