Masterlens

Build your world.
Don't organize it.

Reliable campaign memory for game masters. Every suggestion shows the lines it came from, every answer points to its source, and nothing is added until you approve it.

Invite-only for now. Your campaign stays private to you.

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Just play. Masterlens takes the notes.

Record your session and drop in the transcript, or paste your rough notes. Messy is fine.

Every suggestion shows its source.

Masterlens highlights the exact lines behind each new character, place, item and event. Check it, change it or leave it out. Nothing becomes canon until you approve it.

Ask anything. Get receipts.

Ask what the party knows, who they owe, or who has the silver key. Every answer links to the pages it came from. If your notes don't say, Masterlens tells you instead of guessing.

One world, kept in order.

Each session adds to the same characters, places and events instead of piling up recaps. Events stay in order, and Masterlens points out when your notes disagree about what came first.

Remembering your story.
No hallucinations.

We ran Masterlens on two back-to-back sessions of a long-running actual-play campaign, eight hours of table talk, then asked it what a game master would ask.

  • made-up answers

    We asked about things that never happened, in every one of 9 test runs. Not once did it make up an answer.

  • wrong answers in 34 questions

    Every answer stuck to what the sessions show, or said the notes don’t cover it. Not one wrong answer across two full four-hour sessions.

  • per four-hour session

    From transcript to characters, places, events and a timeline you can search.

Benchmark from October 2026: 34 questions, including 8 with no answer in the sessions, graded by hand against the session transcripts. Answers contained 80% of the 70 key facts the questions called for, and trick questions were asked in every test run.

Made to be trusted at the table

  • It shows its work

    Suggestions come with the lines they were read from, and answers link to their sources, so you can check anything.

  • You approve everything

    Nothing is added to your campaign without your say, and you can always see what changed.

  • Private, and no audio kept

    Only you can see your campaign. Masterlens keeps the words from your sessions, never the recording.

Prep from facts you can check, not from half-remembered notes.

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Masterlens Campaign memory for game masters. Your campaign stays private to you.