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pact-capabilities

Explain and apply Pact 5 capability patterns for guarded smart contract access.

1|1|Updated Jun 9, 2026
Search Tags:#security#capabilities#smart-contracts#pact#defcap#with-capability#compose-capability
One-click install
npx skills add https://github.com/Pact-Community-Organization/github-marketplace --skill pact-capabilities
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: pact-capabilities
Source: https://github.com/Pact-Community-Organization/github-marketplace/tree/main/skills/pact-capabilities
Command: npx skills add https://github.com/Pact-Community-Organization/github-marketplace --skill pact-capabilities

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Pact 5 capability patterns are powerful and tricky to implement correctly; this skill helps engineers understand and apply them to build secure, composable contracts.

Core Features & Use Cases

  • Unmanaged (Boolean Guard) patterns for simple access checks
  • Managed (@managed) capabilities, balance tracking, and manager functions
  • Event-only (@event) capabilities and automatic event emission
  • compose-capability for inner access grants within a parent scope
  • Guidance on installation, cross-module composition, and scoped signatures
  • Real-world use cases: guarded transfers, governance votes, and upgradable module patterns

Quick Start

Install and prototype a minimal Pact module that defines a simple transfer cap and demonstrates with-capability and require-capability flows.

Frequently Asked Questions about pact-capabilities

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

FAQPage Schema
What is the difference between with-capability and require-capability in Pact smart contracts?▼

Pact managed capabilities use the @managed keyword to track resource balances and enforce limits via manager functions. This skill covers implementing managed capabilities for secure balance tracking and constrained access control workflows.

How do I use compose-capability for cross-module access control in Pact?▼

Pact event-only capabilities use the @event keyword to automatically emit events upon execution. This skill demonstrates how to implement @event capabilities for transparent tracking of governance, minting, and access control workflows.

How do I build a secure transfer module using Pact capability patterns?▼

Yes, Pact capabilities support upgradable module patterns and governance voting workflows. This skill explains how to apply unmanaged Boolean guards, managed capabilities, and composition patterns to secure these real-world use cases.

What are the security considerations when installing capabilities across modules in Pact?▼

Cross-module capability installation in Pact requires careful handling of scoped signatures and install-capability constraints. This skill details the security considerations and constraints needed to prevent unauthorized access in composed contracts.

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