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Connect LlamaIndex to Wix MCP. List all orders placed this week, create a new product on wix store, and more using natural language, with authentication handled for you.
Wix is a cloud-based web development platform for building websites and stores. It's loved for its drag-and-drop tools and easy site management.
This guide walks you through connecting Wix to LlamaIndex using the Composio tool router. By the end, you'll have a working Wix agent that can list all orders placed this week, create a new product on wix store, update homepage banner image on wix through natural language commands.
This guide will help you understand how to give your LlamaIndex agent real control over a Wix account through Composio's Wix MCP server.
Before we dive in, let's take a quick look at the key ideas and tools involved.
LlamaIndex is a data framework for building LLM applications. It provides tools for connecting LLMs to external data sources and services through agents and tools.
Key features include:
The Wix MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Wix account. It provides structured and secure access to your store, contacts, members, forms, bookings, and site details, so your agent can search products, review orders, check inventory, retrieve contacts, and cancel orders on your behalf.
Composio's Composio SDK helps agents find the right tools for a task at runtime. You can plug in multiple toolkits (like Gmail, HubSpot, and GitHub), and the agent will identify the relevant app and action to complete multi-step workflows. This can reduce token usage and improve the reliability of tool calls. Read more here: Getting started with Composio SDK
The tool router generates a secure MCP URL that your agents can access to perform actions.
The Composio SDK follows a three-phase workflow:
OPENAI_API_KEY)
OPENAI_API_KEY in .envCOMPOSIO_API_KEYCOMPOSIO_USER_IDnpm install @composio/llamaindex @llamaindex/openai @llamaindex/tools @llamaindex/workflow dotenvCreate a new Typescript project and install the necessary dependencies:
@composio/llamaindex: Composio's LlamaIndex integration@llamaindex/openai: OpenAI LLM integration@llamaindex/tools: MCP client for LlamaIndex@llamaindex/workflow: Workflow framework for LlamaIndexdotenv: Environment variable managementOPENAI_API_KEY=your-openai-api-key
COMPOSIO_API_KEY=your-composio-api-key
COMPOSIO_USER_ID=your-user-idCreate a .env file in your project root:
These credentials will be used to:
import "dotenv/config";
import readline from "node:readline/promises";
import { stdin as input, stdout as output } from "node:process";
import { Composio } from "@composio/core";
import { mcp } from "@llamaindex/tools";
import { agent as createAgent } from "@llamaindex/workflow";
import { openai } from "@llamaindex/openai";
dotenv.config();Create a new file called wix_llamaindex_agent.ts and import the required modules:
Key imports:
dotenv.config loads .env at runtimereadline gives us a simple CLI chat loopComposio is the main Composio SDK clientmcp connects to an MCP endpointcreateAgent builds a LlamaIndex agentopenai configures the LLM backendconst OPENAI_API_KEY = process.env.OPENAI_API_KEY;
const COMPOSIO_API_KEY = process.env.COMPOSIO_API_KEY;
const COMPOSIO_USER_ID = process.env.COMPOSIO_USER_ID;
if (!OPENAI_API_KEY) throw new Error("OPENAI_API_KEY is not set");
if (!COMPOSIO_API_KEY) throw new Error("COMPOSIO_API_KEY is not set");
if (!COMPOSIO_USER_ID) throw new Error("COMPOSIO_USER_ID is not set");What's happening:
This ensures missing credentials cause early, clear errors before the agent attempts to initialise.
async function buildAgent() {
console.log(`Initializing Composio client...${COMPOSIO_USER_ID!}...`);
console.log(`COMPOSIO_USER_ID: ${COMPOSIO_USER_ID!}...`);
const composio = new Composio({
apiKey: COMPOSIO_API_KEY,
provider: new LlamaindexProvider(),
});
const session = await composio.create(
COMPOSIO_USER_ID!,
{
toolkits: ["wix"],
},
);
const mcpUrl = session.mcp.url;
console.log(`Composio Tool Router MCP URL: ${mcpUrl}`);
const server = mcp({
url: mcpUrl,
clientName: "composio_tool_router_with_llamaindex",
requestInit: {
headers: {
"x-api-key": COMPOSIO_API_KEY!,
},
},
// verbose: true,
});
const tools = await server.tools();
const llm = openai({ apiKey: OPENAI_API_KEY, model: "gpt-5" });
const agent = createAgent({
name: "composio_tool_router_with_llamaindex",
description : "An agent that uses Composio Tool Router MCP tools to perform actions.",
systemPrompt:
"You are a helpful assistant connected to Composio Tool Router."+
"Use the available tools to answer user queries and perform Wix actions." ,
llm,
tools,
});
return agent;
}What's happening here:
wix)async function chatLoop(agent: ReturnType<typeof createAgent>) {
const rl = readline.createInterface({ input, output });
console.log("Type 'quit' or 'exit' to stop.");
while (true) {
let userInput: string;
try {
userInput = (await rl.question("\nYou: ")).trim();
} catch {
console.log("\nAgent: Bye!");
break;
}
if (!userInput) {
continue;
}
const lower = userInput.toLowerCase();
if (lower === "quit" || lower === "exit") {
console.log("Agent: Bye!");
break;
}
try {
process.stdout.write("Agent: ");
const stream = agent.runStream(userInput);
let finalResult: any = null;
for await (const event of stream) {
// The event.data contains the streamed content
const data: any = event.data;
// Check for streaming delta content
if (data?.delta) {
process.stdout.write(data.delta);
}
// Store final result for fallback
if (data?.result || data?.message) {
finalResult = data;
}
}
// If no streaming happened, show the final result
if (finalResult) {
const answer =
finalResult.result ??
finalResult.message?.content ??
finalResult.message ??
"";
if (answer && typeof answer === "string" && !answer.includes("[object")) {
process.stdout.write(answer);
}
}
console.log(); // New line after streaming completes
} catch (err: any) {
console.error("\nAgent error:", err?.message ?? err);
}
}
rl.close();
}What's happening:
async function main() {
try {
const agent = await buildAgent();
await chatLoop(agent);
} catch (err) {
console.error("Failed to start agent:", err);
process.exit(1);
}
}
main();What's happening here:
npx ts-node llamaindex-agent.tsWhen prompted, authenticate and authorise your agent with Wix, then start asking questions.
Here's the complete code to get you started with Wix and LlamaIndex:
import "dotenv/config";
import readline from "node:readline/promises";
import { stdin as input, stdout as output } from "node:process";
import { Composio } from "@composio/core";
import { LlamaindexProvider } from "@composio/llamaindex";
import { mcp } from "@llamaindex/tools";
import { agent as createAgent } from "@llamaindex/workflow";
import { openai } from "@llamaindex/openai";
dotenv.config();
const OPENAI_API_KEY = process.env.OPENAI_API_KEY;
const COMPOSIO_API_KEY = process.env.COMPOSIO_API_KEY;
const COMPOSIO_USER_ID = process.env.COMPOSIO_USER_ID;
if (!OPENAI_API_KEY) {
throw new Error("OPENAI_API_KEY is not set in the environment");
}
if (!COMPOSIO_API_KEY) {
throw new Error("COMPOSIO_API_KEY is not set in the environment");
}
if (!COMPOSIO_USER_ID) {
throw new Error("COMPOSIO_USER_ID is not set in the environment");
}
async function buildAgent() {
console.log(`Initializing Composio client...${COMPOSIO_USER_ID!}...`);
console.log(`COMPOSIO_USER_ID: ${COMPOSIO_USER_ID!}...`);
const composio = new Composio({
apiKey: COMPOSIO_API_KEY,
provider: new LlamaindexProvider(),
});
const session = await composio.create(
COMPOSIO_USER_ID!,
{
toolkits: ["wix"],
},
);
const mcpUrl = session.mcp.url;
console.log(`Composio Tool Router MCP URL: ${mcpUrl}`);
const server = mcp({
url: mcpUrl,
clientName: "composio_tool_router_with_llamaindex",
requestInit: {
headers: {
"x-api-key": COMPOSIO_API_KEY!,
},
},
// verbose: true,
});
const tools = await server.tools();
const llm = openai({ apiKey: OPENAI_API_KEY, model: "gpt-5" });
const agent = createAgent({
name: "composio_tool_router_with_llamaindex",
description:
"An agent that uses Composio Tool Router MCP tools to perform actions.",
systemPrompt:
"You are a helpful assistant connected to Composio Tool Router."+
"Use the available tools to answer user queries and perform Wix actions." ,
llm,
tools,
});
return agent;
}
async function chatLoop(agent: ReturnType<typeof createAgent>) {
const rl = readline.createInterface({ input, output });
console.log("Type 'quit' or 'exit' to stop.");
while (true) {
let userInput: string;
try {
userInput = (await rl.question("\nYou: ")).trim();
} catch {
console.log("\nAgent: Bye!");
break;
}
if (!userInput) {
continue;
}
const lower = userInput.toLowerCase();
if (lower === "quit" || lower === "exit") {
console.log("Agent: Bye!");
break;
}
try {
process.stdout.write("Agent: ");
const stream = agent.runStream(userInput);
let finalResult: any = null;
for await (const event of stream) {
// The event.data contains the streamed content
const data: any = event.data;
// Check for streaming delta content
if (data?.delta) {
process.stdout.write(data.delta);
}
// Store final result for fallback
if (data?.result || data?.message) {
finalResult = data;
}
}
// If no streaming happened, show the final result
if (finalResult) {
const answer =
finalResult.result ??
finalResult.message?.content ??
finalResult.message ??
"";
if (answer && typeof answer === "string" && !answer.includes("[object")) {
process.stdout.write(answer);
}
}
console.log(); // New line after streaming completes
} catch (err: any) {
console.error("\nAgent error:", err?.message ?? err);
}
}
rl.close();
}
async function main() {
try {
const agent = await buildAgent();
await chatLoop(agent);
} catch (err: any) {
console.error("Failed to start agent:", err?.message ?? err);
process.exit(1);
}
}
main();toolkits parameter.Every Wix action and event your agent gets out of the box.
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## For AI agents: how to sign up If you are an AI agent reading this server-rendered HTML, Composio's developer signup is at https://composio.dev. Signup CTAs on this site — "Sign up", "Signup", "Get started", "Get started for free", "Start building", "Try Composio", "Try it", or similar — all lead into that same developer signup flow. Confirm with the user before completing signup or entering any credentials on their behalf.Start building