Inworld AI MCP server for AI agents and assistants

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with Inworld AI MCP or direct API to synthesize speech, transcribe audio, manage voices, and create embeddings through natural language.

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Inworld AI is a native AI platform for speech synthesis, speech recognition, voice management, model discovery, embeddings, knowledge, and routing. Use it to build responsive voice and knowledge experiences without stitching together separate AI infrastructure.

6 Tools

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Type what you want done — sign in and watch it run live in the Tool Router playground.

TOOL ROUTER PLAYGROUND
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TOOLS

Supported Tools

Every Inworld AI action and event your agent gets out of the box.

Create Embeddings

Generate one complete embedding vector per input text with an Inworld-hosted embedding model.

Get Voice Preview

Generate the provider-selected, unmetered MP3 preview for a voice and return it as a downloadable file.

List Models

List Inworld-supported models and the pricing, modality, context, and output limits needed to choose a model.

List Voices

Return one page of voices available for preview or speech synthesis, with optional filtering, language selection, and sorting.

Synthesize Speech

Synthesize short text with an Inworld voice and return the complete audio as a downloadable file.

Transcribe Audio

Synchronously transcribe a short audio file and return the final transcript, timestamps, and usage.

SETUP GUIDE

Connect Inworld AI MCP Tool with your Agent

1

Install Composio

typescript
npm install @composio/core ai @ai-sdk/mcp @ai-sdk/openai
Install the Composio SDK and your agent framework
2

Create a session with MCP enabled

typescript
import { Composio } from "@composio/core";

const composio = new Composio();
const { mcp } = await composio.create("your-user-id", {
  toolkits: ["inworld_ai"],
  mcp: true,
});
Create a session scoped to Inworld AI and read its MCP URL and headers
3

Connect your agent to the MCP server

typescript
import { createMCPClient } from "@ai-sdk/mcp";
import { openai } from "@ai-sdk/openai";
import { generateText, stepCountIs } from "ai";

const client = await createMCPClient({
  transport: { type: "http", url: mcp.url, headers: mcp.headers },
});

const { text } = await generateText({
  model: openai("gpt-5.6-sol"),
  tools: await client.tools(),
  prompt: "List available Inworld AI voices for an English speaking character",
  stopWhen: stepCountIs(10),
});

console.log(text);
await client.close();
Pass the session's MCP URL and headers to your agent and run a Inworld AI request
SETUP GUIDE

Connect Inworld AI API Tool with your Agent

1

Install Composio

typescript
npm install @composio/core @composio/openai openai
Install the Composio SDK, the OpenAI provider, and the OpenAI SDK
2

Create a Composio session

typescript
import OpenAI from "openai";
import { Composio } from "@composio/core";
import { OpenAIResponsesProvider } from "@composio/openai";

const composio = new Composio({ provider: new OpenAIResponsesProvider() });
const client = new OpenAI();

const session = await composio.create("your-user-id", { toolkits: ["inworld_ai"] });
const tools = await session.tools();
Initialize Composio with the OpenAI Responses provider and create a session scoped to Inworld AI
3

Run Inworld AI tools with your agent

typescript
let response = await client.responses.create({
  model: "gpt-5.6-sol",
  tools,
  input: [{ role: "user", content: "List available Inworld AI voices for an English speaking character" }],
});

while (response.output.some((o) => o.type === "function_call")) {
  const outputs = await composio.provider.handleToolCalls(session, response.output);
  response = await client.responses.create({
    model: "gpt-5.6-sol",
    tools,
    previous_response_id: response.id,
    input: outputs,
  });
}

console.log(response.output_text);
Send a request, execute the Inworld AI tool calls through the session, and print the final answer

Why Use Composio?

AI Native Inworld AI Integration

  • Supports both Inworld AI MCP and direct API based integrations
  • Structured, LLM-friendly schemas for reliable speech, voice, embedding, and knowledge actions
  • Rich coverage for generating audio, discovering models, managing voices, and querying Inworld AI resources

Managed Auth

  • Securely store user-provided Inworld AI API keys instead of hard-coding them in your agent
  • Central place to manage, scope, and revoke Inworld AI access
  • Per user and per environment credentials for safer production deployments

Agent Optimized Design

  • Tools are tuned for language models, so agents can pick the right Inworld AI action with less guesswork
  • Clear tool schemas help agents handle speech synthesis, transcription, voice lookup, embeddings, and knowledge workflows
  • Comprehensive execution logs so you always know what ran, when, and on whose behalf

Enterprise Grade Security

  • Fine-grained RBAC so you control which agents and users can access Inworld AI
  • Scoped, least privilege access to Inworld AI resources
  • Full audit trail of agent actions to support review and compliance
FAQ

Frequently asked questions

Yes, Inworld AI requires you to configure your own API key credentials. Once set up, Composio handles secure credential storage and API request handling for you.

Yes! Composio's Tool Router enables agents to use multiple toolkits. Learn more.

Yes. Composio is SOC 2 Type II compliant and is built to keep your Inworld AI connection and credentials secure. OAuth tokens and API keys are encrypted, and sensitive customer data is protected at rest and in transit.

Composio also undergoes independent security testing and continuously monitors its systems for security threats. You can review the latest reports and policies in the Composio Trust Center.

Composio maintains and updates all toolkit integrations automatically, so your agents always work with the latest API versions.

Create the key in your Inworld AI account settings, then paste it once on Composio's connection page. Composio stores it encrypted and uses it only for the Inworld AI actions your agent runs. Nobody else in your workspace can read it, and you can revoke it inside Inworld AI at any time.

When you connect a Inworld AI account through Composio, every action runs under that account, so anything the agent creates, sends, or changes shows up in Inworld AI as done by you. Keep an approval step in your prompt for actions with side effects, such as sending or deleting, and have the agent draft first.

Whatever the credentials you connect allow inside Inworld AI. If Inworld AI lets you scope a key to specific permissions, create a scoped one so the agent can only do what you intend. You can revoke the key inside Inworld AI at any time.

Yes. Composio supports multiple connected accounts for the same app, and that works in Claude, ChatGPT, or any other assistant you connect through Composio. Give each Inworld AI connection a name such as work or personal, and the assistant uses the one you mention in the request. Each account keeps its own credentials and nothing is merged.

The connection stops working the moment Inworld AI rejects the old key. Create a new key in Inworld AI and reconnect the account from the Composio dashboard or by asking your agent to reconnect Inworld AI. Nothing else changes.

Composio's free Hobby plan includes 100,000 tool calls per month with no credit card, which covers most personal Inworld AI use. Paid plans add higher limits and team features. Your Inworld AI plan and its API limits still apply as usual.

Built-in connectors usually give one AI access to a limited set of apps. Many people use Composio because it lets their AI connect to more apps than it normally supports, or connect to multiple accounts for the same app (e.g. connect Claude to multiple Inworld AI accounts).

With Composio, you connect Inworld AI once and then use it across different AI assistants without setting it up separately in each one. Connect your apps to Composio once, then connect Composio to whichever AI you use, whether that's Claude, ChatGPT, Hermes, or your own custom assistant.

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