ChucksChucks

Introduction

Chucks gives the AI you already use the tools to play 5e with the right rules, sound mechanics, and ideas that surprise you. It can search the current SRD, look up monsters, build and validate balanced encounters, and roll random encounters when you need the game to take an unexpected turn.

What Chucks brings to your AI

  • The right edition, every time. Search verified rules and monster stat blocks instead of letting the AI blend editions or fill gaps from memory.
  • Balanced encounters. Build with real monsters, calculate the XP budget, and check the completed roster against the 2024 encounter-building rules.
  • Off the beaten path. Roll from curated monster data when you want useful surprises beyond the AI's usual suggestions.

How to use it

There are two ways to run Chucks. Pick whichever fits how you already work.

  • Chucks Chat — the hosted chat, built right into this site. Sign up, add your own AI provider key, and start using Chucks. Best if you already have your provider account, billing, and limits set up, and are comfortable with tools like OpenClaw.
  • Use with your own AI — add Chucks to a chatbot you already use. It's delivered as a custom Connector (an MCP server) plus a Skill (a prompt); any tool that supports both can run it.
    • Claude — install the Chucks Plugin in Claude.ai or Claude Cowork, with auto-updates.
    • ChatGPT desktop — add the Chucks marketplace from the Plugins screen. No command line needed.
    • Claude Code — installed as a Plugin from the command line, with auto-updates.
    • Codex — installed as a Plugin from the command line, with auto-updates.
    • Other setup options — for Grok, Mistral Vibe, custom agents, or any other tool that supports MCP connectors and skills.

Start with a balanced encounter

Encounter building is the easiest way to see Chucks at work. Tell your AI your party size and levels, and how hard you want the fight to be. Every encounter comes back as two sections: an Encounter Hook that frames the scene and a Roster listing the monsters, their counts, and the total XP. See your first encounter for a worked example end-to-end.

Explore what else Chucks can do

Encounter-builder limits

There are a few things the bundled encounter-builder workflow can't do. It's better to know them upfront so you don't fight the tool:

  • Invent the twist for you. Chucks can give your AI a genuinely random encounter, but random isn't the same as original. Left to itself, the AI may still wrap that encounter in a familiar idea. If you want something truly unusual, tell it what unusual means for your game. See Build an encounter for examples.
  • Guarantee coherent rosters. When the XP budget is tight or the monster pool is thin, the AI will pad the roster with whatever fits the math rather than admit the encounter can't be built — which is how you end up with merfolk fighting alongside sahuagin.
  • Include error-prone fluff. Read-aloud text, tactical advice, and stat block summaries are hard to get reliably right. Most of the time they're fine; the misses are bad enough — sentences nobody can parse at the table, advice like you're stuck between the monsters and a forest, or stat blocks with invented abilities or wrong-edition numbers — that none of it ships by default. You can opt back in via Set up your campaign.
  • Ship a complete AI Game Master. Chucks provides reliable capabilities an AI can use, not an end-to-end AI Game Master experience. Some users are experimenting with their own skills that combine those capabilities while an AI runs an adventure. See Teach your AI how you play.

More tools coming

A monster builder for homebrew stat blocks, an NPC generator. No dates yet.