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AI prompt to co-write a novel scene by scene

An AI prompt for co-writing a novel about a locked door in an ordinary house, with a room behind it that was never part of the floor plan.

We are co-writing a novel. You are my scene partner. We are co-writing a novel one scene at a time. Work in phases and stay with the current phase until I give the next cue. --- PHASE A. Voice test Before any story prose, test the voice on a short scene fragment. If I paste a sample under VOICE SAMPLE, write a 120 to 180 word fragment in that voice from this situation: At 1:14 a.m., a character opens a door and notices one concrete thing in the room has changed. Include one specific detail and leave the change unexplained for now. Then wait. With no sample, offer three versions of the same fragment, each 120 to 180 words. Make the differences clear in plain language and wait. I will pick one or mix traits. Revise the fragment until I reply LOCKED. Move to Phase B when I reply LOCKED. VOICE SAMPLE (optional): <<<VOICE [PASTE 1 TO 3 PARAGRAPHS OF YOUR OWN PROSE OR A PUBLIC-DOMAIN SAMPLE. DESCRIBE FEATURES SUCH AS SENTENCE RHYTHM AND NARRATIVE DISTANCE.] VOICE>>> --- PHASE B. Story spine (short) After LOCKED, write a tight spine with concrete details. - Working title: [WORKING TITLE OR TBD] - Genre and tone: [e.g. LITERARY MYSTERY, DRY HUMOR] - Protagonist: [NAME], wants [EXTERNAL GOAL], needs [INTERNAL SHIFT] - Pressure: [WHAT GETS WORSE IF THEY WAIT] - Promise to the reader: [WHAT KIND OF PAYOFF THIS BOOK OWES] - Creative direction: [TROPES, TONES, OR PLOT MOVES THAT FIT THIS NOVEL] - Opening situation: [WHERE WE START AND WHY TODAY] STORY NOTES (optional): <<<NOTES [PASTE OUTLINE BULLETS, CHARACTER FACTS, OR EARLIER SCENES] NOTES>>> Wait for me to approve or edit the spine. --- PHASE C. Write one scene When I say WRITE SCENE, produce only this block: 1. Scene card - Place and time - Who is present - What changes or becomes clear by the end of this scene - What the reader should feel 2. The scene - Roughly 700 to 1200 words - Stay in the locked voice - Show through action, sensory detail, and dialogue - Let the prose begin directly with the scene. Keep author commentary outside the prose. - Use details specific to the character and place. Let the mood grow from what happens. - Let emotion come through the character's behavior and choices. - Choose specific images and plain wording over familiar metaphors and similes. - Let sentence rhythm vary naturally, with polished lines reserved for precise images. 3. Optional exit beat - Add a sentence when the scene creates natural forward pull. Let every other scene end at its natural beat. 4. Continuity scrap - Changed: [2 to 4 bullets] - Open questions: [1 to 3 questions the reader should still be carrying] - Open threads: [1 to 3 details worth remembering and developing when the story calls for them] Then stop and wait for the next cue. --- Commands I may use later: - WRITE SCENE: [WHAT HAPPENS / WHOSE POV / ANY CONSTRAINT] - TIGHTEN: cut 20% while keeping the scene's natural ending intact - HOTTER: raise conflict in the same scene - QUIETER: more subtext, less speech - REWRITE IN VOICE: same events, closer to the locked sample - NEXT OPTIONS: give three possible next scenes in one line each. I pick. Start now with Phase A.

How to use

  1. Paste a voice sample even if it is rough. One paragraph showing sentence rhythm and narrative distance beats "write beautifully."
  2. Approve the spine before WRITE SCENE. Set the character's want and creative direction first. Prose is cheaper to rewrite than plot.
  3. After each scene, skim the Continuity scrap. Tell the AI which open thread to develop next, or which secret to keep buried.

Tips

  • One scene per turn keeps the voice consistent. Asking for "the whole first act" usually flattens the prose.
  • If the AI drifts into summary or stock language, reply REWRITE IN VOICE and ask for specific details instead.
  • Keep NOTES updated with names, dates, and objects that must stay consistent.

Example output

Phase A (abbreviated)

Voice test, dry literary mystery voice:
"At 1:14 a.m., Mira opened the pantry door. The light was on. She had turned it off before bed. A glass stood on the floor beside the shelves, full to the rim. It was unfamiliar.

'Hello?' she said.

The house stayed quiet. From behind the cereal tins came the soft click of a pen being opened."
[The full 120 to 180 word fragment would continue, leaving the change unexplained.]

Phase C (abbreviated)

Scene card
- Place and time: Mira's kitchen, 1:14 a.m., rain on the glass
- Who is present: Mira alone, then a knock
- Changes by the end: she finds the envelope was opened from inside the house
- Feel: quiet dread with a slow build

The scene
[~900 words of prose in the locked voice. Ends at a natural beat.]

Optional exit beat
The second knock came from inside the pantry.

Continuity scrap
- Changed: envelope seal broken. Mira now suspects someone still in the house
- Open questions: who opened it, and why the pantry light was warm
- Open threads: the pantry knock, plus the missing second page of the letter

Appears in