A Foundry VTT module for the Pathfinder Second Edition system that automates the Inventor feat's Invent Formula workflow.
Characters with the Inventor feat and Expert Crafting gain an Invent Formula button on their Crafting tab. Clicking it opens a searchable browser of every craftable item in your compendium — filtered automatically to what the character can legally learn.
- Rolls the Crafting check against the correct DC and deducts the formula price on success
- Adds the formula directly to the character's known formula list
- Respects Alchemical Crafting and Magical Crafting feat requirements — items requiring those feats are hidden until the character has them
- Handles the Basic Crafter's Book benefit — level-0 common formulas can be added for free if the character has the Basic Crafter's Book.
- Filters out Unique items
- Deduplicates legacy vs. remaster items — Always attempts to show the remastered version
Formula prices follow the PF2e rules for Buying and Selling Formulas, not the crafting cost. Rarity multipliers apply: The price is set to the full formula price (even though Inventor works like crafting. Speak with your DM for refunds)
| Rarity | Multiplier |
|---|---|
| Common | 1× |
| Uncommon | 5× |
| Rare | 10× |
| Unique | Not available |
Found under Configure Settings → Module Settings:
| Setting | Default | Description |
|---|---|---|
| Require Basic Crafter's Book | Off | When on, characters must own the item to get free level-0 formulas |
| Allow Uncommon Formulas | Off | Enables inventing Uncommon formulas at 5× base price |
| Allow Rare Formulas | Off | Enables inventing Rare formulas at 10× base price |
Via Foundry module browser: search for PF2e Inventor.
Manual install: paste the manifest URL into Foundry's Install Module dialog:
https://github.com/Keinkil/pf2e-inventor-feat/releases/latest/download/module.json
- Foundry VTT v13.348+
- PF2e system
| Foundry | PF2e | Status |
|---|---|---|
| v13 | v7+ | ✅ Verified |
Pathfinder, the Pathfinder logo, and related marks are trademarks of Paizo Inc. This module is an independent, unofficial community project and is not affiliated with, endorsed by, or sponsored by Paizo Inc. or the Foundry VTT team.
This project was largely vibe-coded with AI assistance. Any unintentional copyright infringements are exactly that — unintentional. If something in here steps on your toes, open an issue or reach out directly and I will take it down without argument.
Compatibility with other modules is not guaranteed and largely untested. If you find a conflict, please file an issue and I'll document it or attempt a fix.