> **Building with AI coding agents?** Install the authstack plugin with one command. This equips your agent with accurate Scalekit implementation patterns.
>
> **Recommended**:
> ```bash
> npx @scalekit-inc/cli setup
> ```
>
> Global:
> ```bash
> npm install -g @scalekit-inc/cli
> scalekit setup
> ```
>
> Supports Claude Code, Cursor, GitHub Copilot, Codex + skills for 40+ agents.
> Features: full-stack-auth, agent-auth, mcp-auth, modular-sso, modular-scim.
> [Full setup guide](https://docs.scalekit.com/dev-kit/build-with-ai/)

---

# Passwordless login

Send and verify passwordless login codes
<div class="sdk-client-page">

Use `scalekitClient.passwordless()` to send and verify email magic links or one-time codes for sign-in.

Call send, then verify with the code or link token from the user's email to complete login.

### sendPasswordlessEmail
<div class="sdk-method-section">
  
    
      

      Send a passwordless authentication email with default options

      
        The email address to send the passwordless link to
      
      
        Send passwordless.
      

```java wrap showLineNumbers=false
scalekitClient.passwordless().sendPasswordlessEmail("user@acme.com");
```

    
  
</div>

### verifyPasswordlessEmail
<div class="sdk-method-section">
  
    
      

      Verify a passwordless authentication code or link token without auth request ID

      
        The credential to verify (code or linkToken)
      
      
        Verified claims or result.
      

```java wrap showLineNumbers=false

VerifyPasswordlessOptions credential = new VerifyPasswordlessOptions();
credential.setLinkToken("<magic_link_token>");

scalekitClient.passwordless().verifyPasswordlessEmail(credential);
```

    
  
</div>

### resendPasswordlessEmail
<div class="sdk-method-section">
  
    
      

      Resend a passwordless authentication email

      
        The auth request ID from the original send response
      
      
        Send passwordless.
      

```java wrap showLineNumbers=false
scalekitClient.passwordless().resendPasswordlessEmail("authreq_123");
```

    
  
</div>

</div>


---

## More Scalekit documentation

| Resource | What it contains | When to use it |
|----------|-----------------|----------------|
| [/llms.txt](/llms.txt) | Structured index with routing hints per product area | Start here — find which documentation set covers your topic before loading full content |
| [/llms-full.txt](/llms-full.txt) | Complete documentation for all Scalekit products in one file | Use when you need exhaustive context across multiple products or when the topic spans several areas |
| [sitemap-0.xml](https://docs.scalekit.com/sitemap-0.xml) | Full URL list of every documentation page | Use to discover specific page URLs you can fetch for targeted, page-level answers |