How to integrate Bunnycdn MCP with Mastra AI

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Introduction

This guide walks you through connecting Bunnycdn to Mastra AI using the Composio tool router. By the end, you'll have a working Bunnycdn agent that can create a new pull zone for static assets, list all dns zones in my bunnycdn account, delete a storage zone by its id, get details for a specific pull zone through natural language commands.

This guide will help you understand how to give your Mastra AI agent real control over a Bunnycdn account through Composio's Bunnycdn MCP server.

Before we dive in, let's take a quick look at the key ideas and tools involved.

TL;DR

Here's what you'll learn:
  • Set up your environment so Mastra, OpenAI, and Composio work together
  • Create a Tool Router session in Composio that exposes Bunnycdn tools
  • Connect Mastra's MCP client to the Composio generated MCP URL
  • Fetch Bunnycdn tool definitions and attach them as a toolset
  • Build a Mastra agent that can reason, call tools, and return structured results
  • Run an interactive CLI where you can chat with your Bunnycdn agent

What is Mastra AI?

Mastra AI is a TypeScript framework for building AI agents with tool support. It provides a clean API for creating agents that can use external services through MCP.

Key features include:

  • MCP Client: Built-in support for Model Context Protocol servers
  • Toolsets: Organize tools into logical groups
  • Step Callbacks: Monitor and debug agent execution
  • OpenAI Integration: Works with OpenAI models via @ai-sdk/openai

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

The Bunnycdn MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Bunnycdn account. It provides structured and secure access to your CDN resources, so your agent can perform actions like managing storage zones, configuring DNS records, creating pull zones, and retrieving zone details on your behalf.

  • Effortless storage zone management: Instantly add or delete storage zones in specific regions, letting your agent optimize file storage based on your needs.
  • Automated DNS configuration: Direct your agent to create, update, or remove DNS records and zones, helping you keep your domain setup fast and flexible.
  • Pull zone creation and removal: Have your agent set up new pull zones or clean up unused ones, streamlining your content delivery workflows with minimal manual intervention.
  • Detailed configuration and status retrieval: Ask your agent to fetch comprehensive details for any DNS or pull zone, ensuring you always have up-to-date insights into your CDN setup.
  • Full account overview and auditing: Let the agent list all your DNS zones and pull critical stats, making it easy to audit or review your Bunnycdn resources on demand.

Supported Tools & Triggers

Tools
Add Storage ZoneTool to add a new storage zone.
Create DNS RecordTool to create a new dns record in a specific dns zone.
Create Pull ZoneTool to create a new pull zone.
Delete DNS RecordTool to delete a specific dns record by its id.
Delete DNS ZoneTool to delete a specific dns zone by its id.
Delete Pull ZoneTool to delete a specific pull zone by its id.
Delete Storage ZoneTool to delete a storage zone.
Get DNS Zone DetailsTool to retrieve details of a specific dns zone by its id.
Get DNS Zone ListTool to list all dns zones in your bunny cdn account.
Get Pull ZoneTool to retrieve details of a specific pull zone.
Get Pull Zone ListTool to fetch the list of pull zones.
Get Storage Zone DetailsTool to retrieve the full details of a storage zone.
Get Storage Zone ListTool to list all storage zones in your bunny cdn account.
Get Storage Zone RegionTool to retrieve the region code of a storage zone.
List DNS RecordsTool to list all dns records in a specific dns zone.
Purge Pull ZoneTool to purge the entire cache of a pull zone.
Purge URLTool to purge a specific url from the bunnycdn cache.
Set Storage Zone RegionTool to update replication regions of a storage zone.
Update Pull ZoneTool to update settings for a specific pull zone.
Update Storage ZoneTool to update settings for a specific storage zone.

What is the Composio tool router, and how does it fit here?

What is Tool Router?

Composio's Tool Router 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 Tool Router

The tool router generates a secure MCP URL that your agents can access to perform actions.

How the Tool Router works

The Tool Router follows a three-phase workflow:

  1. Discovery: Searches for tools matching your task and returns relevant toolkits with their details.
  2. Authentication: Checks for active connections. If missing, creates an auth config and returns a connection URL via Auth Link.
  3. Execution: Executes the action using the authenticated connection.

Step-by-step Guide

Prerequisites

Before starting, make sure you have:
  • Node.js 18 or higher
  • A Composio account with an active API key
  • An OpenAI API key
  • Basic familiarity with TypeScript

Getting API Keys for OpenAI and Composio

OpenAI API Key
  • Go to the OpenAI dashboard and create an API key.
  • You need credits or a connected billing setup to use the models.
  • Store the key somewhere safe.
Composio API Key
  • Log in to the Composio dashboard.
  • Go to Settings and copy your API key.
  • This key lets your Mastra agent talk to Composio and reach Bunnycdn through MCP.

Install dependencies

bash
npm install @composio/core @mastra/core @mastra/mcp @ai-sdk/openai dotenv

Install the required packages.

What's happening:

  • @composio/core is the Composio SDK for creating MCP sessions
  • @mastra/core provides the Agent class
  • @mastra/mcp is Mastra's MCP client
  • @ai-sdk/openai is the model wrapper for OpenAI
  • dotenv loads environment variables from .env

Set up environment variables

bash
COMPOSIO_API_KEY=your_composio_api_key_here
COMPOSIO_USER_ID=your_user_id_here
OPENAI_API_KEY=your_openai_api_key_here

Create a .env file in your project root.

What's happening:

  • COMPOSIO_API_KEY authenticates your requests to Composio
  • COMPOSIO_USER_ID tells Composio which user this session belongs to
  • OPENAI_API_KEY lets the Mastra agent call OpenAI models

Import libraries and validate environment

typescript
import "dotenv/config";
import { openai } from "@ai-sdk/openai";
import { Agent } from "@mastra/core/agent";
import { MCPClient } from "@mastra/mcp";
import { Composio } from "@composio/core";
import * as readline from "readline";

import type { AiMessageType } from "@mastra/core/agent";

const openaiAPIKey = process.env.OPENAI_API_KEY;
const composioAPIKey = process.env.COMPOSIO_API_KEY;
const composioUserID = process.env.COMPOSIO_USER_ID;

if (!openaiAPIKey) throw new Error("OPENAI_API_KEY is not set");
if (!composioAPIKey) throw new Error("COMPOSIO_API_KEY is not set");
if (!composioUserID) throw new Error("COMPOSIO_USER_ID is not set");

const composio = new Composio({
  apiKey: composioAPIKey as string,
});
What's happening:
  • dotenv/config auto loads your .env so process.env.* is available
  • openai gives you a Mastra compatible model wrapper
  • Agent is the Mastra agent that will call tools and produce answers
  • MCPClient connects Mastra to your Composio MCP server
  • Composio is used to create a Tool Router session

Create a Tool Router session for Bunnycdn

typescript
async function main() {
  const session = await composio.create(
    composioUserID as string,
    {
      toolkits: ["bunnycdn"],
    },
  );

  const composioMCPUrl = session.mcp.url;
  console.log("Bunnycdn MCP URL:", composioMCPUrl);
What's happening:
  • create spins up a short-lived MCP HTTP endpoint for this user
  • The toolkits array contains "bunnycdn" for Bunnycdn access
  • session.mcp.url is the MCP URL that Mastra's MCPClient will connect to

Configure Mastra MCP client and fetch tools

typescript
const mcpClient = new MCPClient({
    id: composioUserID as string,
    servers: {
      nasdaq: {
        url: new URL(composioMCPUrl),
        requestInit: {
          headers: session.mcp.headers,
        },
      },
    },
    timeout: 30_000,
  });

console.log("Fetching MCP tools from Composio...");
const composioTools = await mcpClient.getTools();
console.log("Number of tools:", Object.keys(composioTools).length);
What's happening:
  • MCPClient takes an id for this client and a list of MCP servers
  • The headers property includes the x-api-key for authentication
  • getTools fetches the tool definitions exposed by the Bunnycdn toolkit

Create the Mastra agent

typescript
const agent = new Agent({
    name: "bunnycdn-mastra-agent",
    instructions: "You are an AI agent with Bunnycdn tools via Composio.",
    model: "openai/gpt-5",
  });
What's happening:
  • Agent is the core Mastra agent
  • name is just an identifier for logging and debugging
  • instructions guide the agent to use tools instead of only answering in natural language
  • model uses openai("gpt-5") to configure the underlying LLM

Set up interactive chat interface

typescript
let messages: AiMessageType[] = [];

console.log("Chat started! Type 'exit' or 'quit' to end.\n");

const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout,
  prompt: "> ",
});

rl.prompt();

rl.on("line", async (userInput: string) => {
  const trimmedInput = userInput.trim();

  if (["exit", "quit", "bye"].includes(trimmedInput.toLowerCase())) {
    console.log("\nGoodbye!");
    rl.close();
    process.exit(0);
  }

  if (!trimmedInput) {
    rl.prompt();
    return;
  }

  messages.push({
    id: crypto.randomUUID(),
    role: "user",
    content: trimmedInput,
  });

  console.log("\nAgent is thinking...\n");

  try {
    const response = await agent.generate(messages, {
      toolsets: {
        bunnycdn: composioTools,
      },
      maxSteps: 8,
    });

    const { text } = response;

    if (text && text.trim().length > 0) {
      console.log(`Agent: ${text}\n`);
        messages.push({
          id: crypto.randomUUID(),
          role: "assistant",
          content: text,
        });
      }
    } catch (error) {
      console.error("\nError:", error);
    }

    rl.prompt();
  });

  rl.on("close", async () => {
    console.log("\nSession ended.");
    await mcpClient.disconnect();
    process.exit(0);
  });
}

main().catch((err) => {
  console.error("Fatal error:", err);
  process.exit(1);
});
What's happening:
  • messages keeps the full conversation history in Mastra's expected format
  • agent.generate runs the agent with conversation history and Bunnycdn toolsets
  • maxSteps limits how many tool calls the agent can take in a single run
  • onStepFinish is a hook that prints intermediate steps for debugging

Complete Code

Here's the complete code to get you started with Bunnycdn and Mastra AI:

typescript
import "dotenv/config";
import { openai } from "@ai-sdk/openai";
import { Agent } from "@mastra/core/agent";
import { MCPClient } from "@mastra/mcp";
import { Composio } from "@composio/core";
import * as readline from "readline";

import type { AiMessageType } from "@mastra/core/agent";

const openaiAPIKey = process.env.OPENAI_API_KEY;
const composioAPIKey = process.env.COMPOSIO_API_KEY;
const composioUserID = process.env.COMPOSIO_USER_ID;

if (!openaiAPIKey) throw new Error("OPENAI_API_KEY is not set");
if (!composioAPIKey) throw new Error("COMPOSIO_API_KEY is not set");
if (!composioUserID) throw new Error("COMPOSIO_USER_ID is not set");

const composio = new Composio({ apiKey: composioAPIKey as string });

async function main() {
  const session = await composio.create(composioUserID as string, {
    toolkits: ["bunnycdn"],
  });

  const composioMCPUrl = session.mcp.url;

  const mcpClient = new MCPClient({
    id: composioUserID as string,
    servers: {
      bunnycdn: {
        url: new URL(composioMCPUrl),
        requestInit: {
          headers: session.mcp.headers,
        },
      },
    },
    timeout: 30_000,
  });

  const composioTools = await mcpClient.getTools();

  const agent = new Agent({
    name: "bunnycdn-mastra-agent",
    instructions: "You are an AI agent with Bunnycdn tools via Composio.",
    model: "openai/gpt-5",
  });

  let messages: AiMessageType[] = [];

  const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout,
    prompt: "> ",
  });

  rl.prompt();

  rl.on("line", async (input: string) => {
    const trimmed = input.trim();
    if (["exit", "quit"].includes(trimmed.toLowerCase())) {
      rl.close();
      return;
    }

    messages.push({ id: crypto.randomUUID(), role: "user", content: trimmed });

    const { text } = await agent.generate(messages, {
      toolsets: { bunnycdn: composioTools },
      maxSteps: 8,
    });

    if (text) {
      console.log(`Agent: ${text}\n`);
      messages.push({ id: crypto.randomUUID(), role: "assistant", content: text });
    }

    rl.prompt();
  });

  rl.on("close", async () => {
    await mcpClient.disconnect();
    process.exit(0);
  });
}

main();

Conclusion

You've built a Mastra AI agent that can interact with Bunnycdn through Composio's Tool Router. You can extend this further by:
  • Adding other toolkits like Gmail, Slack, or GitHub
  • Building a web-based chat interface around this agent
  • Using multiple MCP endpoints to enable cross-app workflows

How to build Bunnycdn MCP Agent with another framework

OpenAI Agents SDK

OpenAI Agents SDK

Use Bunnycdn MCP with OpenAI Agents SDK

Claude Agent SDK

Claude Agent SDK

Use Bunnycdn MCP with Claude Agent SDK

Google ADK

Google ADK

Use Bunnycdn MCP with Google ADK

LangChain

LangChain

Use Bunnycdn MCP with LangChain

Vercel AI SDK

Vercel AI SDK

Use Bunnycdn MCP with Vercel AI SDK

LlamaIndex

LlamaIndex

Use Bunnycdn MCP with LlamaIndex

CrewAI

CrewAI

Use Bunnycdn MCP with CrewAI

FAQ

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

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

Can I use Tool Router MCP with Mastra AI?

Yes, you can. Mastra AI 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 Bunnycdn tools.

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

Yes, absolutely. You can configure which Bunnycdn 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 Bunnycdn data and credentials are handled as safely as possible.

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