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chapter-8-action-checks

Automate d20-based action checks against difficulty using attributes or skills.

Updated Feb 24, 2026
Search Tags:#expertise#difficulty#galactic-adventures#d20#action-checks#opposed-rolls
One-click install
npx skills add https://github.com/megazear7/galactic-adventures-assistant --skill chapter-8-action-checks
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: chapter-8-action-checks
Source: https://github.com/megazear7/galactic-adventures-assistant/tree/main/.github/skills/rules/chapter-8-action-checks
Command: npx skills add https://github.com/megazear7/galactic-adventures-assistant --skill chapter-8-action-checks

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Action checks are a fundamental mechanic that determine success or failure of tasks by applying a relevant attribute or skill against a difficulty, including opposed rolls and expertise considerations.

Core Features & Use Cases

  • Automates standard action resolution for tasks requiring a skill or attribute check (e.g., piloting, hacking, diplomacy) with varying difficulties from trivial to extremely difficult.
  • Supports expertise bonuses and opposed rolls, providing a clear framework for determining outcomes in both solo and opposed challenges.
  • Enables consistent application of chapter-based rules across gameplay sessions and campaign prep.

Quick Start

Describe an action to be resolved in your game, and the system will apply the chosen attribute or skill against the appropriate difficulty to determine success.

Frequently Asked Questions about chapter-8-action-checks

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

FAQPage Schema
How do I resolve a d20 action check against a specific difficulty?▼

A standard action check resolves by rolling a d20 and applying the relevant attribute or skill modifier against a difficulty threshold, with optional expertise bonuses added to determine success or failure.

Can I run opposed rolls for two characters competing in the same skill?▼

Yes, opposed rolls are supported by comparing the d20 results of both participants, applying their respective attributes, skills, and expertise bonuses to determine the winner of the contested challenge.

What difficulty levels are supported for galactic adventure action checks?▼

The system supports difficulty levels ranging from trivial to extremely difficult, allowing game masters to scale action resolution across various challenges like piloting, hacking, or diplomacy encounters.

How does expertise modify a skill or attribute check?▼

Expertise provides an optional bonus added to the d20 action check, increasing the total score to help overcome higher difficulty thresholds during task resolution for characters with specialized training.

Do I need any specific tools or dependencies to automate action resolution?▼

No external dependencies are required to automate action resolution; the system operates independently to apply d20 rules, modifiers, and success thresholds for task adjudication.

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