The Loremaster

A second brain that
keeps your canon.

Most AI tools hand you generic fantasy and leave the bookkeeping to you. The Loremaster is seated inside your campaign — it answers from your world's live state, writes real records into your codex, and leaves an audit trail you can revert line by line.

isometra.app/campaign · The Loremaster
The Loremaster answering a question about the campaign's own factions and NPCs, grounded in real data
Grounded, not generic

It answers from your world, not the multiverse.

Ask about the storm-singer you invented three sessions ago and the Loremaster knows him — his faction, his secret, the location he haunts. Its context is your campaign's live state: the world primer, the entity web, session recaps, and a rolling memory of what you two have already decided. The same page you see here is the page it reads.

isometra.app/campaign · Campaign · Cast · Aedwin Storr
Campaign · Cast · Aedwin Storr
isometra.app/campaign · Campaign · Cast
Campaign · Cast
Creation with receipts

Ask for a rival, and a rival exists.

“Give me a rival for Ulva — someone from the Free Captains.” The Loremaster proposes a full record — description, personality, stats, loot, faction ties — and on your approval writes it into the Cast, linked to the people and places it references. No copying out of a chat window. It was never a chat window; it's a co-author with a pen in your book.

Session prep

It preps the night with you.

The Session Sheet keeps the Loremaster in the left margin while you shape tonight's secrets, quests, and beats. Ask it to draft a strong start, surface the threads you left dangling, or stock the treasure hoard — everything it suggests lands as cards you can stage, edit, or discard.

isometra.app/campaign · Session Planning
Session Planning
Marginalia

The full writ of powers.

Every kind of record

NPCs, locations, quests, factions, pantheons and deities; monsters, spells, items, feats and backgrounds; traps, treasure, mounts, familiars, encounters, handouts, random tables and notes — the Loremaster drafts them all, into the same editors you use by hand.

Plan and Build modes

Plan mode is a pure sounding board — it can read your world but cannot touch it. Flip to Build when you want the ideas written down. Over-generation is impossible by construction.

Pinned context

Pin the entities tonight's session turns on and the Loremaster holds them in mind across the whole conversation — plus everything they're linked to.

An honest audit trail

Every tool call is logged. The writes you would want back — new records, edited fields, whole imports — store what they replaced and revert in one click, from the chat itself or the AI Activity log. Generated art is the exception: it is not taken back from the log, it keeps its own version history.

Portraits in the flow

Ask for a portrait mid-conversation and the image lands on the entity's record with a full history — regenerating never destroys the art you liked. Meet the Illuminator →

Lyra, for the players

Players chat with Lyra the Sage — grounded in their character sheet and the rules, walled off from DM secrets by design. She helps them play sharper, not peek further.

See it at your own table.

Begin a campaignTry the live demo — no account