Using Claude Code and Logto to quickly build your custom login flows

This blog is organically posted at https://blog.logto.io/claude-code-logto

Managed by Logto team.

What is Claude Code?

Claude Code is an AI-powered coding assistant built by Anthropic, designed to help developers write, debug, and understand code more efficiently. Unlike general chatbots, it focuses on programming workflows and integrates deeply with development environments. Developers can use it to generate code snippets, explain complex functions, fix errors, or accelerate prototyping without switching tools or losing focus.

Its foundation comes from Anthropic’s Claude models, trained with a strong emphasis on safety, reliability, and helpfulness. That means Claude Code isn’t just about speed, it’s about producing trustworthy and maintainable code in real projects.

How is Claude Code different from other tools?

The market already has coding copilots and AI assistants, but Claude Code distinguishes itself in a few key ways:

• Context depth: Claude models are known for handling very long inputs, which allows Claude Code to process large codebases or lengthy files without breaking context.
• Explanatory ability: Instead of just generating code, it explains why something works. This is especially helpful for onboarding new developers or learning new frameworks.
• Safety and reliability focus: Anthropic emphasizes AI alignment and reducing hallucinations, making Claude Code’s suggestions more dependable compared to purely productivity-driven tools.
• Flexible usage: Claude Code can be used interactively in an IDE, through the terminal, or in documentation workflows, adapting to different developer preferences.

In short, while other tools emphasize code completion, Claude Code aims to become a coding partner that balances generation with understanding.

Who is Claude Code for?

Claude Code is designed for a wide range of users:

• Professional developers who want faster debugging, cleaner explanations, and productivity boosts inside their workflow.
• Engineering teams working with large, complex codebases that need an assistant capable of handling big files and dependencies.
• Students and learners who need clear explanations of syntax, functions, and programming concepts without wading through dense documentation.
• Product builders and startups who want to iterate quickly and ship faster while keeping code quality high.

Essentially, if you write, read, or manage code regularly, Claude Code can make your development process faster, clearer, and more reliable.

Guide: Use Logto and Claude Code to add a custom log-in experience

Today I’ll walk you through a tutorial on using Claude Code to add custom login to your app, whether you’re a professional developer or just coding for fun.

Register an app in Logto console

In this example, I used Claude Code to build a document manager app.

First, I went to the Logto Cloud Console to create a single-page app. You’ll see various configuration options and endpoints and we’ll use them later during the integration.

Setting up Logto integration with Claude Code

Claude Code handled the rest: it installed the latest Logto React SDK, set up authentication components, and wired everything together.

According to the instructions, I needed to provide two key pieces of information:

• Logto endpoint
• App ID

I copied the Logto endpoint and App ID into my project and configure the Redirect URIs and Post sign-out redirect URIs.

Important detail: Make sure to set your redirect URIs to your local development server address (e.g., http://localhost:3000/callback).

You can pass these two directly to Claude Code, and it will handle the rest of the configuration for you.

Now let’s test it: click Sign in, and you’ll be redirected to the Logto hosted sign-in page.

If you set a post sign-out URL, you’ll be able to sign out and be redirected to that page.

Customize Logto pre-built sign in experience

Logto provides a configurable, pre-built sign-in flow that you can customize in the Console. To get started, go to Sign-in Experience > Sign-in & Sign-up, then choose your preferred sign-in methods (such as email, username, phone number, or social login).

Once configured, triggering the sign-in flow will redirect users to Logto's hosted sign-in page with your selected options. The entire authentication process is handled by Logto, and users are returned to your app after signing in.

Create a floating login panel above your product

Now I want to go a step further and build a more customized sign-in experience. Instead of redirecting to a separate page, I'll place a floating login panel directly on top of the product UI. This keeps users in context while still using Logto's authentication flow underneath.

You can just use natural language prompts:

I want to make the sign-in page look better, just a floating panel on the bottom right corner. With two buttons: one for "Sign In" and one for "Create Account." Each button should redirect to a different screen, handled by Logto. Using [first-screen experience](https://docs.logto.io/end-user-flows/authentication-parameters/first-screen) documented in Logto.

        

Claude Code will generate:

• Beautiful floating login panel component
• Appropriate Tailwind CSS styling
• Logto first-screen parameter configuration
• Responsive design support

Use your test user to verify that the login is captured by the Logto CIAM platform.

Logto's upcoming update will support AI-powered auth integration

This is just a basic example. Logto is currently building MCP servers that run directly inside your IDE, allowing you to interact with the Logto Console and Management API without ever leaving your development environment.

With this setup, you'll be able to:

• Create and manage users
• View and filter logs
• Configure login and sign-up flows
• Define API resources, permissions, and roles
• Manage applications and access settings
• And more

By combining local tooling with AI and Logto's infrastructure, authentication is no longer a painful integration step, it becomes part of your natural development flow.