The wiki
NPCs, places, factions, items, quests, events. Everything is linked, everything can be found. Folders, tags, a relation graph, secret notes only you can see.
A campaign wiki built for your AI
The external brain
of the Game Master
Describe your world to Claude, ChatGPT or Cursor. It writes it into Dunjn: NPCs, places, sessions, encounters. You prepare by talking, you play with a clean wiki at hand.
No credit card
Works with Claude, ChatGPT, Cursor and any MCP client
Garrick's page, keeper of the Gateway Inn. Created by the AI from one sentence, linked to the inn, ready to play.
Scroll
How it works
You talk, Dunjn files
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01
Plug in your AI
Two minutes. An OAuth connection for Claude, a key for Cursor. Dunjn becomes an MCP server your assistant knows how to use, with some fifty read and write tools.
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02
Describe your campaign
"Create the tavern keeper in Padhrone and link him to the inn." The AI calls Dunjn's tools: it creates the NPC, fills in the page, weaves the relation with the place.
Create the keeper of the Gateway Inn in Valdoria. Former soldier, stiff arm, loyal to the Lantern Guild, and link him to the inn.
- ▸ dunjn · create_entity NPC · Garrick Fallowmoon
- ▸ dunjn · create_entity_relation keeper of → The Gateway Inn
- ▸ dunjn · create_tag Ally
Done. Garrick Fallowmoon is in your wiki with his page: appearance, personality, two lines of dialogue and a secret only you can see. He is linked to the inn and tagged Ally. Want me to write him a rumor for the roll table?
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03
Find everything in the wiki
Every NPC, every session note, every encounter lands where it belongs, with its links. You edit by hand whenever you like, and the AI reads what you changed.
Six ready-made prompts travel with your assistant: prepare a full session, create an NPC, write lore, design an encounter, format notes. They bear the names of the Council of Mages, and your AI invokes them in one command.
What you keep at the table
A complete GM tool, not just a database
Sessions
Prep notes and live notes side by side. Skill checks, entity cards, collapsible blocks. Your AI can write section by section without overwriting the rest.
Combat
Eight goblins against four players: Dunjn tells you whether it is playable, then keeps initiative and hit points while you narrate.
Players
D&D 5e and Daggerheart character sheets, a player portal that shows only what you make visible, a campaign calendar and timeline.
Pricing
A price for the wiki, never for the AI
Your assistant runs on its own subscription, Dunjn does not bill for it. Plans differ by space: the number of campaigns and image storage.
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Artificer
€5 per month
3 campaigns
1 GB of images
Start the trial -
Wizard
€9 per month
6 campaigns
3 GB of images
Start the trial -
Archmage
€19 per month
Unlimited campaigns
5 GB of images
Start the trial
Questions
What GMs ask us
Which AI can I use?
Claude, on the web, in the app and in Claude Code, ChatGPT Desktop, Cursor, and any client that speaks the MCP protocol. You keep your subscription and your habits.
Does it work without an AI?
Yes. Dunjn is first a campaign wiki with a rich editor, a combat tracker and character sheets. The AI is a faster way to fill it, not a requirement.
Can I get my data out?
Your AI can read the whole campaign through MCP and hand it back in any format you like.
What happens when the trial ends?
Your data is kept. You pick a plan to reopen your campaigns, and everything is where you left it.
Do my players need an account?
For the player portal, yes, and it is free. They see their sheets and what you make visible, never your secret notes.
Try it on your next session
Thirty days, no card. Enough time to prepare two sessions and see whether your AI and your wiki get along.
Open Dunjn