---
name: next-js-server-actions-826d774beaac
description: Mutations, Form handling, and RPC-style calls.
metadata:
  labels: [nextjs, actions, mutations]
  triggers:
    files: ['**/actions.ts', '**/*.tsx']
    keywords: [use server, Server Action, revalidatePath, useFormStatus]
---

# Server Actions

## **Priority: P1 (HIGH)**

Handle form submissions and mutations without creating API endpoints.

## Implementation

- **Directive**: Add `'use server'` at the top of an async function.
- **Usage**: Pass to `action` prop of `<form>` or invoke from event handlers.

```tsx
// actions.ts
'use server';
export async function createPost(formData: FormData) {
  const title = formData.get('title');
  await db.post.create({ title });
  revalidatePath('/posts'); // Refresh UI
}
```

## Client Invocation

- **Form**: `<form action={createPost}>` (Progressive enhancements work without JS).
- **Event Handler**: `onClick={() => createPost(data)}`.
- **Pending State**: Use `useFormStatus` hook (must be inside a component rendered within the form).

## Validation & Error Handling

- **Zod**: Always validate `FormData` or arguments on the server.
- **Return Values**: Return serializable objects `{ success: boolean, error?: string }` to handle feedback on Client.

## Security

- **Authentication**: Check `auth()` (e.g., NextAuth) session inside every Server Action.
- **Closure**: Be careful with closures in Server Actions defined inside Components (they capture context encrypted). Prefer defining actions in separate files (`actions.ts`).


---
Source attribution: ngxtm
Original project: https://github.com/ngxtm/devkit/blob/9439f27ce3fa7fe53ff9278a1ee9a44bffa70eba/rules/nextjs/server-actions/SKILL.md
License: MIT
License information: https://opensource.org/license/mit
Original upstream instructions; downloaded from Mega AI Hub.

## Upstream license notice

MIT License

Copyright (c) 2024

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.



# Mega AI Hub resource metadata

Creator / publisher: ngxtm
Original project: https://github.com/ngxtm/devkit/blob/9439f27ce3fa7fe53ff9278a1ee9a44bffa70eba/rules/nextjs/server-actions/SKILL.md
Attribution basis: Source repository record

Fields of work: Development & Engineering, Product Management
Roles: Frontend Developer, Full-Stack Developer, Product Manager
Specialties: Backend, Cross Platform, Frontend
Tools: Nextjs
Country applicability: Country not specified
Classification basis: Source catalog labels
Instruction SHA-256: 1d9b640d510c9ad286f88e93833d261a91962a24346d4040e11cdddc8fc19389