Today is launch day. ScriptoriumGM is live on Product Hunt, which means the thing I've been building in a small spiral notebook and a much larger codebase for the better part of two years is, as of this morning, out in the world with a vote button attached to it.
If you found this post from Product Hunt: hi. Thanks for clicking through. The short version of what this is, why it exists, and what I'd love from you is below.
If you found this post from our blog: the ask is near the bottom. The Product Hunt page is here, and an upvote today genuinely matters. So does an honest comment if you've been using the product.
ScriptoriumGM
Run unforgettable TTRPG sessions every week.
What ScriptoriumGM actually is
It's a campaign management workspace for GMs with an AI collaborator, the Campaign Assistant, wired into the notes and rulebooks you already keep.
The plain-English version: you write your session notes and worldbuilding in a block-based editor, upload your rulebooks and homebrew PDFs into a per-campaign library, and the Campaign Assistant can search all of it mid-conversation. When it drafts a new NPC or edits a scene, the proposed change shows up inside the actual note with the edited sections outlined. You accept, reject, or tweak before anything saves.
That last part is the thing I keep coming back to. Most AI tools let you "use AI on your notes." ScriptoriumGM lets the AI touch your notes, but only with a preview you control. No silent rewrites. No rolling back a bad autogenerate from git history at 1 AM.
Why I built it
My brother is a GM. He's been running games for years. Multiple campaigns, binders of prep, three different Obsidian vaults, and a Discord scroll-back he uses as a search engine for NPC names.
Watching him prep is what pushed me into this. The creative work wasn't the problem. It was the hour before every session spent hunting for the innkeeper's name, looking up a grapple ruling in a rulebook he'd paid for twice, retyping the same NPC across three tools because none of them talked to each other.
He didn't want an AI to run his games. He wanted something that could read what he'd already written, cite the rulebook he already owned, and stop him from doing the same busywork three times.
That's the pitch, basically. Take the admin. Leave the craft.
The part that's different from ChatGPT
I know. Everyone says their AI tool is different from ChatGPT. Here's the specific difference, in GM terms:
ChatGPT doesn't know who your villain is. It doesn't know which NPCs your party trusts. It hasn't read your campaign's rulebook. It has read a rulebook, probably from training data, probably a couple of editions out of date, and it will confidently make up rules on top of that guess.
The Campaign Assistant:
- Reads your notes. Ask "what did the party promise the Harper agent in session 4?" and it searches the actual note, quotes the actual line.
- Cites your rulebooks. Upload the PDF. Teach it. Now rules answers come back with the passage, not a paraphrase.
- Writes back into the campaign. When it generates a new NPC, you don't copy-paste the output. It drafts the note, links it to related characters and locations, and drops the whole thing in your library as a proposal.
- Doesn't mix campaigns. Each campaign has its own walled-off memory. The Curse of Strahd villain doesn't leak into your Blades crew.
The workflow that gets me excited: you're mid-prep, ask the assistant for a dockside fixer NPC, it reads your port city notes before writing anything, drafts a note that references the faction your party already tangled with, drops it as a proposal. You hit accept. The note is saved, linked, searchable, and the next time you ask about that NPC it'll find her.
What's in the free tier (really)
This one matters to me so I want to be specific: there is no 7-day trial. There's no credit card. The free tier ships the whole product on the Fast model. Library, editor, Campaign Assistant, in-chat image generation, every supported system, with a monthly usage budget sized for a regular weekly prep cadence.
If you want the Balanced or Powerful models, or a bigger budget, those unlock through Patreon. The $10 tier unlocks Balanced. The $20 tier unlocks the Powerful model, which as of last week is Claude Opus 4.7, the current top-of-stack Anthropic model, with a million-token context window when you're doing heavy long-form worldbuilding.
That's the whole pricing story. The same pledge that keeps the lights on is the pledge that unlocks the heavier models. I wanted one flow, not a separate SaaS subscription stacked on top of Patreon support money.
The stuff that's shipped today
So you know what you're actually looking at if you try it:
- Campaign Library with folders, typed icons, and full-text search
- Block-based note editor with backlinks and reference links between notes
- Campaign Assistant with per-conversation model picker (Fast / Balanced / Powerful)
- AI note edits with in-note preview and accept/reject
- File upload for rulebooks, adventure PDFs, homebrew documents (PDFs up to 100MB)
- Obsidian vault importer. Wikilinks, embedded images, folders all come through.
- Multi-campaign workspace with walled-off memory per campaign
- In-chat image generation (portraits, location art, transparent tokens)
- Dedicated system configurations for the big ones, bring-your-own-rulebook for everything else
- Session Zero onboarding that drops you into a working campaign with your first assistant reply already waiting
- Mobile-web workspace that works on a phone at the table
Things we don't do yet, in case you're weighing us against a specific competitor: we don't ingest session audio (tools like Archivist and Scrybe Quill own that space), and we don't have a player-facing portal the way Squire does. Both are on the radar. Neither ships today.
The ask
If you've read this far, here's the bit I need:
If you're on Product Hunt today, please upvote. The launch page is here. First-four-hours momentum is most of the ranking game, and a vote from you right now is worth more than a vote this afternoon.
If you have time for a comment, please leave one. Product Hunt comments are disproportionately how people decide whether to try something. A sentence about your own GM workflow and whether this sounds useful (or useless, honestly) helps the next GM who lands on the page.
If you just want to try it, go try it. Sign up here, pick D&D or whatever you run, and the Session Zero walkthrough will have you in a campaign with the Campaign Assistant running in about five minutes. No credit card. There's a waitlist if we hit capacity, but we've been working through it in daily batches.
If you're already a user and you're reading this: I see you. Thank you. If you want to drop a line in our Discord about what's been useful and what's been janky, today's the day it helps most.
I'll be in the Product Hunt comments all day. Ask me anything. Product questions, the Opus 4.7 migration story, why the note editor is block-based and not markdown, whatever. I'll answer.
Let's see what happens.
— Ross