How to integrate Elevenlabs MCP with Codex

Framework Integration Gradient
Elevenlabs Logo
Codex Logo
divider

Introduction

Codex is one of the most popular coding harnesses out there. And MCP makes the experience even better. With Elevenlabs MCP integration, you can draft, triage, summarise emails, and much more, all without leaving the terminal or app, whichever you prefer.

Composio removes the Authentication handling completely from you. We handle the entire integration lifecycle, and all you need to do is just copy the URL below, authenticate inside Codex, and start using it.

Why use Composio?

Apart from a managed and hosted MCP server, you will get:

  • CodeAct: A dedicated workbench that allows GPT to write its code to handle complex tool chaining. Reduces to-and-fro with LLMs for frequent tool calling.
  • Large tool responses: Handle them to minimise context rot.
  • Dynamic just-in-time access to 20,000 tools across 870+ other Apps for cross-app workflows. It loads the tools you need, so GPTs aren't overwhelmed by tools you don't need.

How to install Elevenlabs MCP in Codex

Codex CLI

Run the command in your terminal.

Terminal

This will auto-redirect you to the Rube authentication page.

Rube authentication redirect page

Once you're authenticated, you will be able to access the tools.

Verify the installation by running:

codex mcp list

If you otherwise prefer to use config.toml, add the following URL to it. You can get the bearer token from rube.app → Use Rube → MCP URL → Generate token

[projects."/home/user/composio"]
trust_level = "untrusted"

[mcp_servers.rube]
bearer_token_env_var = "your bearer token"
enabled = true
url = "https://rube.app/mcp"

Codex in VS Code

If you have installed Codex in VS Code.

Then: ⚙️ → MCP Settings → + Add servers → Streamable HTTP:

Add the Rube MCP URL: https://rube.app/mcp and the bearer token.

VS Code MCP Settings

To verify, click on the Open config.toml

Open config toml in Codex

Make sure it's there:

[mcp_servers.composio_rube]
bearer_token_env_var = "your bearer token"
enabled = true
url = "https://rube.app/mcp"

Codex App

Codex App follows the same approach as VS Code.

  1. Click ⚙️ on the bottom left → MCP Servers → + Add servers → Streamable HTTP:
Codex App MCP Settings
  1. Restart and verify if it's there in .codex/config.toml
[mcp_servers.composio_rube]
bearer_token_env_var = "your bearer token"
enabled = true
url = "https://rube.app/mcp"
  1. Save, restart the extension, and start working.

What is the Elevenlabs MCP server, and what's possible with it?

The Elevenlabs MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Elevenlabs account. It provides structured and secure access to your voice synthesis projects and tools, so your agent can perform actions like generating audio from text, managing custom voices, organizing projects, and fine-tuning pronunciation on your behalf.

  • Project and chapter audio conversion: Instantly convert text content from chapters or entire projects into high-quality, natural-sounding audio files.
  • Custom voice creation and management: Guide your agent to add, finalize, or share custom voices—either by uploading new samples or assembling voices from existing data.
  • Pronunciation dictionary and rule management: Improve the accuracy of speech outputs by adding pronunciation dictionaries or custom pronunciation rules directly from files or specific aliases/phonemes.
  • Project organization and automation: Let your agent create new projects, add or remove chapters, and automate speech synthesis workflows for audiobooks, podcasts, or media production.
  • Embeddable audio player generation: Enable your agent to generate AudioNative projects, creating customizable and embeddable audio players from your content with just a prompt.

Supported Tools & Triggers

Tools
Add a pronunciation dictionary from fileAdds a new pronunciation dictionary from a lexicon file to improve speech synthesis accuracy.
Add new project with attributesUse to create a new elevenlabs project for text-to-speech synthesis (e.
Add rules to the pronunciation dictionaryAdds one or more custom pronunciation rules (alias or phoneme) to an existing pronunciation dictionary.
Add sharing voiceAdds an existing, shareable voice to a specified user's elevenlabs account library under a new custom name, requiring the user's public id and the voice id.
Add a voiceAdds a custom voice, requiring a `name` and a `files` list with at least one audio sample, to initiate cloning; returns `voice id` but voice is not immediately usable for synthesis.
Convert chapter to audioConverts the textual content of a chapter, identified by `chapter id` within a `project id`, into audio format.
Convert a projectConverts an existing elevenlabs studio project, including all its chapters and using its configured settings and voices, into speech.
Create a previously generated voiceFinalizes the creation of a voice using its `generated voice id` from a previous generation step by assigning a name, description, and optional labels.
Create an AudioNative enabled projectCreates an elevenlabs audionative project, generating an embeddable audio player from a provided content file using text-to-speech, allowing customization of player appearance, audio settings, and conversion options.
Delete chapter from projectIrreversibly deletes a specific, existing chapter from an existing project, typically to remove unwanted or obsolete content.
Delete a dubbing projectPermanently deletes a dubbing project by its id; this action is irreversible and the project cannot be recovered.
Delete history itemPermanently deletes a specific history item (including its audio file and metadata) using its `history item id`; this operation is irreversible and should be used with caution.
Delete project by idUse to irreversibly delete a specific project by its `project id`; the project must exist and be accessible, and this action cannot be undone.
Delete voice samplePermanently deletes a specific voice sample for a given voice id; this action is irreversible.
Delete voice by idPermanently and irreversibly deletes a specific custom voice using its `voice id`; the voice must exist and the authenticated user must have permission to delete it.
Download history itemsDownloads audio clips from history by id(s), returning a single file or a zip archive, with an optional output format (e.
Dub a video or an audio fileDub a video or audio file into a specified target language, requiring 'file' or 'source url', 'target lang', and 'csv file' if 'mode' is 'manual'.
Edit voiceUpdates the name, audio files, description, or labels for an existing voice model specified by `voice id`.
Edit voice settingsEdits key voice settings (e.
Text to speechConverts text to speech using a specified elevenlabs voice and model, returning a downloadable audio file.
Text to speech streamConverts text to a spoken audio stream, allowing latency optimization, specific output formats (some tier-dependent), and custom pronunciations; ensure the chosen model supports text-to-speech and text is preferably under 5000 characters.
Generate a random voiceGenerates a unique, random elevenlabs text-to-speech voice based on input text and specified voice characteristics.
Get user profile by handleRetrieves the public profile information for an existing elevenlabs user based on their unique handle.
Get audio from history itemRetrieves the audio content for a specific history item from elevenlabs, using a `history item id` that must correspond to a previously generated audio.
Get sample audioRetrieves the audio for a given `sample id` that must belong to the specified `voice id`.
Get chapter by IDFetches comprehensive details for a specific chapter within a given project, including its metadata (name, id), conversion status, progress, download availability, and content statistics.
Get chapters by project idRetrieves a list of all chapters, their details, and conversion status for a project, useful for managing content or tracking progress.
Get chapter snapshotsRetrieves all saved version snapshots for a specific chapter within a given project, enabling review of its history or reversion to prior states.
Get default voice settingsRetrieves the elevenlabs text-to-speech service's default voice settings (stability, similarity boost, style, speaker boost) that are applied when no voice-specific or request-specific settings are provided.
Get dubbed audio for a languageRetrieves an existing dubbed audio file for a specific `dubbing id` and `language code`.
Get dubbing project metadataRetrieves metadata and status for a specific dubbing project by its id.
Get generated itemsRetrieves metadata for a list of generated audio items from history, supporting pagination and optional filtering by voice id.
Get history item by idRetrieves detailed information (excluding the audio file) for a specific audio generation history item from elevenlabs, using its unique id.
Get pronunciation dictionary metadataRetrieves metadata for a specific, existing pronunciation dictionary from elevenlabs using its id.
Get modelsRetrieves a detailed list of all available elevenlabs text-to-speech (tts) models and their capabilities.
Get project by IDUse to retrieve all details for a specific project, including its chapters and their conversion statuses, by providing the project's unique id.
Get projectsFetches a list of all projects and their details associated with the user's elevenlabs account; this is a read-only operation.
Get project snapshotsRetrieves all available snapshots (saved states or versions) for an existing project, enabling history tracking, version comparison, or accessing specific states for playback/processing, particularly in text-to-speech workflows.
Get pronunciation dictionariesRetrieves a paginated list of pronunciation dictionaries, used to customize how specific words or phrases are pronounced by the text-to-speech (tts) engine.
Get pronunciation dictionary versionDownloads the pronunciation lexicon specification (pls) file for an existing version of a pronunciation dictionary from elevenlabs, used to customize tts pronunciation.
Get shared voicesRetrieves a paginated and filterable list of shared voices from the elevenlabs voice library.
Get sso provider adminRetrieves the sso provider configuration for a specified workspace, typically for review purposes, and will indicate if no configuration exists.
Get dubbing transcript by languageRetrieves the textual transcript for a specified dubbing project and language, if one exists for that language in the project.
Get user infoRetrieves detailed information about the authenticated elevenlabs user's account, including subscription, usage, api key, and status.
Get user subscription infoRetrieves detailed subscription information for the currently authenticated elevenlabs user.
Get voiceRetrieves comprehensive details for a specific, existing voice by its `voice id`, optionally including its settings.
Get voices listRetrieves a list of all available voices along with their detailed attributes and settings.
Get voice settingsRetrieves the stability, similarity, style, and speaker boost settings for a specific, existing elevenlabs voice using its `voice id`.
Get API documentationRetrieves the content of the official elevenlabs api documentation page hosted on mintlify.
Remove rules from pronunciation dictionaryPermanently removes exact-match pronunciation rules from a specified elevenlabs pronunciation dictionary using a list of rule strings; non-matching rule strings are ignored and this action cannot add or modify rules.
Speech to speechConverts an input audio file to speech using a specified voice; if a `model id` is provided, it must support speech-to-speech conversion.
Speech to speech streamingConverts an input audio stream to a different voice output stream in real-time, using a specified speech-to-speech model.
Stream chapter audioStreams the audio for a specified chapter snapshot from an elevenlabs project, optionally converting the output to mpeg format.
Stream project audioStreams audio from a specific project snapshot, optionally converting it to mpeg format.
Archive project snapshotArchives an existing project snapshot by its id, creating a permanent, immutable, and typically irreversible copy of its state.
Update project pronunciation dictionariesUpdates a project's pronunciation dictionaries on elevenlabs to improve text-to-speech accuracy for specialized terms; note that while multiple dictionaries can be applied, the ui only displays the first.
Voice generation parameters retrievalFetches configurable parameters for elevenlabs voice generation, used to determine available settings (e.

Conclusion

You've successfully integrated Elevenlabs with Codex using Composio's Rube MCP server. Now you can interact with Elevenlabs directly from your terminal, VS Code, or the Codex App using natural language commands.

Key benefits of this setup:

  • Seamless integration across CLI, VS Code, and standalone app
  • Natural language commands for Elevenlabs operations
  • Managed authentication through Composio's Rube
  • Access to 20,000+ tools across 870+ apps for cross-app workflows
  • CodeAct workbench for complex tool chaining

Next steps:

  • Try asking Codex to perform various Elevenlabs operations
  • Explore cross-app workflows by connecting more toolkits
  • Build automation scripts that leverage Codex's AI capabilities

How to build Elevenlabs MCP Agent with another framework

FAQ

What are the differences in Tool Router MCP and Elevenlabs MCP?

With a standalone Elevenlabs MCP server, the agents and LLMs can only access a fixed set of Elevenlabs tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Elevenlabs and many other apps based on the task at hand, all through a single MCP endpoint.

Can I use Tool Router MCP with Codex?

Yes, you can. Codex fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Elevenlabs tools.

Can I manage the permissions and scopes for Elevenlabs while using Tool Router?

Yes, absolutely. You can configure which Elevenlabs scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

How safe is my data with Composio Tool Router?

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Elevenlabs data and credentials are handled as safely as possible.

Used by agents from

Context
Letta
glean
HubSpot
Agent.ai
Altera
DataStax
Entelligence
Rolai
Context
Letta
glean
HubSpot
Agent.ai
Altera
DataStax
Entelligence
Rolai
Context
Letta
glean
HubSpot
Agent.ai
Altera
DataStax
Entelligence
Rolai

Never worry about agent reliability

We handle tool reliability, observability, and security so you never have to second-guess an agent action.