capability-system

Implement capability-based security with unforgeable tokens for fine-grained access control.

17|2|Updated Feb 16, 2026
One-click install
npx skills add https://github.com/rainoftime/pl-skills --skill capability-system
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: capability-system
Source: https://github.com/rainoftime/pl-skills/tree/main/capability-system
Command: npx skills add https://github.com/rainoftime/pl-skills --skill capability-system

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires type-checker-generator, linear-type-implementer, and includes references (resource) components.

What problem does it solve?

This Skill addresses the need for robust security by implementing capability-based security, ensuring fine-grained access control and adherence to the principle of least privilege.

Core Features & Use Cases

  • Capability Tokens: Manages unforgeable tokens that represent authority to access resources.
  • Authority Delegation: Enables secure transfer of capabilities between different principals.
  • Attenuation & Revocation: Supports reducing capability powers and revoking them when necessary.
  • Use Case: Implementing a secure operating system component where specific processes are granted only the exact permissions they need to perform their tasks, preventing unauthorized access to sensitive data.

Quick Start

Implement capability-based security for fine-grained access control and least privilege.

Frequently Asked Questions about capability-system

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I implement capability-based security for fine-grained access control?

Capability-based security implements fine-grained access control by using unforgeable tokens to represent authority over resources. This ensures strict adherence to the principle of least privilege by granting processes only the exact permissions needed.

What are unforgeable tokens and how do they manage least privilege in systems programming?

Unforgeable tokens manage least privilege by acting as concrete authorities that cannot be counterfeited or guessed. In systems programming, they encapsulate specific access rights, ensuring processes cannot bypass security boundaries to access unauthorized resources.

How do I delegate authority securely while allowing capability attenuation and revocation?

You can delegate authority securely by transferring capability tokens between principals. The system supports capability attenuation to reduce token powers and revocation to invalidate them, ensuring delegated permissions can be dynamically constrained.

Can I use unforgeable tokens for sandboxing and confinement in distributed object systems?

Yes, unforgeable tokens support sandboxing and confinement in distributed object systems. By confining capabilities to specific processes, you restrict their interactions and prevent unauthorized access to sensitive data across the distributed environment.

Do I need a type-checker-generator and linear-type-implementer to support capabilities?

Yes, a type-checker-generator and linear-type-implementer are required dependencies. They provide the underlying type system enforcement needed to guarantee the integrity and secure handling of unforgeable capability tokens.

What is the best way to enforce least privilege when building secure operating system components?

The best way to enforce least privilege in secure operating system components is using capability-based security. It grants processes only the precise permissions required for their tasks, preventing unauthorized access to sensitive system data.