@tpmjs/sprites-policy-set

Update the network policy for a sprite to control outbound network access.

Installation

npm install @tpmjs/sprites-policy-set

Requirements

• SPRITES_TOKEN environment variable - Get your token from https://sprites.dev

Usage

import { spritesPolicySetTool } from '@tpmjs/sprites-policy-set';

// Allow only specific domains (block everything else)
const result = await spritesPolicySetTool.execute({
  name: 'my-sandbox',
  mode: 'allow',
  domains: ['api.github.com', 'registry.npmjs.org', 'pypi.org']
});

console.log(result);
// {
//   policy: {
//     mode: 'allow',
//     domains: ['api.github.com', 'registry.npmjs.org', 'pypi.org']
//   },
//   applied: true
// }

// Block specific domains (allow everything else)
const blockResult = await spritesPolicySetTool.execute({
  name: 'my-sandbox',
  mode: 'deny',
  domains: ['malicious-site.com', 'tracking.example.com']
});

Input Parameters

Output

NetworkPolicy Object

Policy Modes

• allow mode: Blocks all outbound traffic EXCEPT to listed domains

  • Use for maximum security when you know exactly which APIs are needed

• deny mode: Allows all outbound traffic EXCEPT to listed domains

  • Use to block known-bad domains while allowing general access

Use Cases

• Restrict sprite to only access required APIs
• Block access to potentially harmful domains
• Implement defense-in-depth security
• Ensure code can only communicate with trusted services

Error Handling

The tool throws errors in these cases:

• SPRITES_TOKEN environment variable is not set
• Invalid mode (must be 'allow' or 'deny')
• Domains must be an array
• Sprite not found (HTTP 404)
• Invalid or expired API token (HTTP 401)
• Network timeout (30 second limit)
• API errors with descriptive messages

License

MIT