How to integrate 0CodeKit MCP with Claude Code

Manage your 0CodeKit directly from Claude Code with zero worries about OAuth hassles, API-breaking issues, or reliability and security concerns. You can do this in two different ways: Via Composio Connect - Direct and easiest approach Via Composio SDK - Programmatic approach with more control

0CodeKit logo0CodeKit
Api Key

0CodeKit is a utility API platform for AI, document, image, and data workflows. Use it to convert, validate, generate, store, and automate data without custom backend code.

8 Tools

Introduction

Manage your 0CodeKit directly from Claude Code with zero worries about OAuth hassles, API-breaking issues, or reliability and security concerns.

You can do this in two different ways:

  1. Via Composio Connect - Direct and easiest approach
  2. Via Composio SDK - Programmatic approach with more control

Also integrate 0CodeKit with

Why use Composio?

  • Only one MCP URL to connect multiple apps with Claude Code with zero auth hassles.
  • Programmatic tool calling allows LLMs to write its code in a remote workbench to handle complex tool chaining. Reduces to-and-fro with LLMs for frequent tool calling.
  • Handling Large tool responses out of LLM context to minimize context rot.
  • Dynamic just-in-time access to 20,000 tools across 1000+ other Apps for cross-app workflows. It loads the tools you need, so LLMs aren't overwhelmed by tools you don't need.

Connecting 0CodeKit to Claude Code using Composio

1. Add the Composio MCP to Claude

Terminal

2. Start Claude Code

bash
claude

3. Open your MCP list

bash
/mcp

4. Select Composio and click on Authenticate

Select Composio and click Authenticate

5. This will redirect you to the Composio OAuth page. Complete the flow by authorizing Composio and you're all set.

Composio OAuth authorization page
Composio authorization complete
Ask Claude to connect to your account and authenticate via the link

What is the 0CodeKit MCP server, and what's possible with it?

The 0CodeKit MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your 0CodeKit account. It provides structured and secure access to text, validation, conversion, date, and calculation utilities, so your agent can validate emails, find keywords, parse campaign links, hash messages, and calculate BMI on your behalf.

  • Email validation: Have your agent check whether an email address is valid and retrieve the corrected address when available.
  • Text search and hashing: Let the agent locate keywords and their positions in text, or generate a cryptographic digest or HMAC for a message.
  • Campaign link analysis: Direct your agent to extract standard UTM campaign details from a URL.
  • Country and date checks: Instruct your agent to convert country names and ISO codes, or determine whether a date falls on a weekend.
  • Health estimates and credit checks: Have your agent calculate BMI with related weight, energy, and nutrient estimates, or check your remaining 0CodeKit credits.

Connecting 0CodeKit via Composio SDK

Composio SDK is the underlying tech that powers Rube. It's a universal gateway that does everything Rube does but with much more programmatic control. You can programmatically generate an MCP URL with the app you need (here 0CodeKit) for even more tool search precision. It's secure and reliable.

How the Composio SDK works

The Composio SDK 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

Step by step10 STEPS
1

Prerequisites

Before starting, make sure you have:
  • Claude Pro, Max, or API billing enabled Anthropic account
  • Composio API Key
  • A 0CodeKit account
  • Basic knowledge of Python or TypeScript
2

Install Claude Code

bash
# macOS, Linux, WSL
curl -fsSL https://claude.ai/install.sh | bash

# Windows PowerShell
irm https://claude.ai/install.ps1 | iex

# Windows CMD
curl -fsSL https://claude.ai/install.cmd -o install.cmd && install.cmd && del install.cmd

To install Claude Code, use one of the following methods based on your operating system:

3

Set up Claude Code

bash
cd your-project-folder
claude

Open a terminal, go to your project folder, and start Claude Code:

  • Claude Code will open in your terminal
  • Follow the prompts to sign in with your Anthropic account
  • Complete the authentication flow
  • Once authenticated, you can start using Claude Code
Claude Code initial setup showing sign-in prompt
Claude Code terminal after successful login
4

Set up environment variables

bash
COMPOSIO_API_KEY=your_composio_api_key_here
USER_ID=your_user_id_here

Create a .env file in your project root with the following variables:

  • COMPOSIO_API_KEY authenticates with Composio (get it from Composio dashboard)
  • USER_ID identifies the user for session management (use any unique identifier)
5

Install Composio library

npm install @composio/core dotenv

Install the Composio TypeScript library to create MCP sessions.

  • @composio/core provides the core Composio functionality
  • dotenv loads environment variables from your .env file
6

Generate Composio MCP URL

import 'dotenv/config';
import { Composio } from '@composio/core';

const { COMPOSIO_API_KEY, USER_ID } = process.env;

if (!COMPOSIO_API_KEY || !USER_ID) {
  throw new Error('COMPOSIO_API_KEY and USER_ID required in .env');
}

const composioClient = new Composio({ apiKey: COMPOSIO_API_KEY });

const composioSession = await composioClient.create(USER_ID, {
  toolkits: ['0codekit'],
});

const composioMcpUrl = composioSession?.mcp.url;

console.log(`MCP URL: ${composioMcpUrl}`);
console.log(`\nUse this command to add to Claude Code:`);
console.log(`claude mcp add --transport http 0codekit-composio "${composioMcpUrl}" --headers "X-API-Key:${COMPOSIO_API_KEY}"`);

Create a script to generate a Composio MCP URL for 0CodeKit. This URL will be used to connect Claude Code to 0CodeKit.

What's happening

  • We import the Composio client and load environment variables
  • Create a Composio instance with your API key
  • Call create() to create a Tool Router session for 0CodeKit
  • The returned mcp.url is the MCP server URL that Claude Code will use
  • The script prints this URL so you can copy it
7

Run the script and copy the MCP URL

node --loader ts-node/esm generate_mcp_url.ts
# or if using tsx
tsx generate_mcp_url.ts

Run your TypeScript script to generate the MCP URL.

  • The script connects to Composio and creates a Tool Router session
  • It prints the MCP URL and the exact command you need to run
  • Copy the entire claude mcp add command from the output
8

Add 0CodeKit MCP to Claude Code

bash
claude mcp add --transport http 0codekit-composio "YOUR_MCP_URL_HERE" --headers "X-API-Key:YOUR_COMPOSIO_API_KEY"

# Then restart Claude Code
exit
claude

In your terminal, add the MCP server using the command from the previous step. The command format is:

  • claude mcp add registers a new MCP server with Claude Code
  • --transport http specifies that this is an HTTP-based MCP server
  • The server name (0codekit-composio) is how you'll reference it
  • The URL points to your Composio Tool Router session
  • --headers includes your Composio API key for authentication

After running the command, close the current Claude Code session and start a new one for the changes to take effect.

9

Verify the installation

bash
claude mcp list

Check that your 0CodeKit MCP server is properly configured.

  • This command lists all MCP servers registered with Claude Code
  • You should see your 0codekit-composio entry in the list
  • This confirms that Claude Code can now access 0CodeKit tools

If everything is wired up, you should see your 0codekit-composio entry listed:

Claude Code MCP list showing the toolkit MCP server
10

Authenticate 0CodeKit

The first time you try to use 0CodeKit tools, you'll be prompted to authenticate.

  • Claude Code will detect that you need to authenticate with 0CodeKit
  • It will show you an authentication link
  • Open the link in your browser (or copy/paste it)
  • Complete the 0CodeKit authorization flow
  • Return to the terminal and start using 0CodeKit through Claude Code

Once authenticated, you can ask Claude Code to perform 0CodeKit operations in natural language. For example:

  • "Convert JSON data into CSV file"
  • "Generate QR code for checkout link"
  • "Extract text from uploaded PDF"

Complete Code

Here's the complete code to get you started with 0CodeKit and Claude Code:

import 'dotenv/config';
import { Composio } from '@composio/core';

const { COMPOSIO_API_KEY, USER_ID } = process.env;

if (!COMPOSIO_API_KEY || !USER_ID) {
  throw new Error('COMPOSIO_API_KEY and USER_ID required in .env');
}

const composioClient = new Composio({ apiKey: COMPOSIO_API_KEY });

const composioSession = await composioClient.create(USER_ID, {
  toolkits: ['0codekit'],
});

const composioMcpUrl = composioSession?.mcp.url;

console.log(`MCP URL: ${composioMcpUrl}`);
console.log(`\nUse this command to add to Claude Code:`);
console.log(`claude mcp add --transport http 0codekit-composio "${composioMcpUrl}" --headers "X-API-Key:${COMPOSIO_API_KEY}"`);

Conclusion

You've successfully integrated 0CodeKit with Claude Code using Composio's MCP server. Now you can interact with 0CodeKit directly from your terminal using natural language commands.

Key features of this setup:

  • Terminal-native experience without switching contexts
  • Natural language commands for 0CodeKit operations
  • Secure authentication through Composio's managed MCP
  • Tool Router for dynamic tool discovery and execution

Next steps:

  • Try asking Claude Code to perform various 0CodeKit operations
  • Add more toolkits to your Tool Router session for multi-app workflows
  • Integrate this setup into your development workflow for increased productivity

You can extend this by adding more toolkits, implementing custom workflows, or building automation scripts that leverage Claude Code's capabilities.

TOOLS

Supported Tools

Every 0CodeKit action and event your agent gets out of the box.

Calculate BMI

Calculate body mass index and the provider's related desirable-weight, daily-energy, and nutrient estimates from weight in kilograms and height in centimeters.

Check Weekend

Determine whether a date is a weekend and return its weekday name and day number.

Convert Nation and ISO Code

Convert either an English country name to its ISO code or an ISO code to its English country name.

Find Keywords

Search text for one or more keywords and report whether each occurs and the zero-based positions of matches.

Get Remaining Credits

Return the number of 0CodeKit credits remaining for the connected API key.

Hash Message

Generate a cryptographic digest or HMAC for a text message using a supported algorithm.

Parse UTM Parameters

Extract standard UTM campaign parameters from a URL.

Validate Email

Check an email address using 0CodeKit and return whether it is valid plus the provider's corrected-address value.

FAQ

Frequently asked questions

With a standalone 0CodeKit MCP server, the agents and LLMs can only access a fixed set of 0CodeKit tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from 0CodeKit and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Claude Code 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 0CodeKit tools.

Yes, absolutely. You can configure which 0CodeKit 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.

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 0CodeKit data and credentials are handled as safely as possible.

Start with 0CodeKit.It takes 30 seconds.

Managed auth, hosted MCP servers, and every 0CodeKit tool your agent needs.Free to start.

Start building