Guide · Craft

How to write roleplay prompts The first line sets the next hundred.

Practical prompt writing for AI roleplay: openings that give the storyteller something to run with, scenario prompts in three sentences, first messages that hand you the turn, and the short notes that steer a scene without stopping it.

Written by
The LoreWeaver team
Updated
October 3, 2026
Reading time
11 minutes
A blank sheet of paper and a fountain pen on a dark desk beside a lit candle, with castles above a misty river valley at sunset beyond the window

The short answer

How do you write a good AI roleplay prompt?

Give the AI a concrete place, pressure that is already building, a character who wants something, and a moment where your character has to act, then stop and let it answer. Write each turn as an attempt rather than an outcome, steer with a short out-of-character note when the story needs to change, and keep lasting direction where the AI reads it every turn. On LoreWeaver, session notes hold up to 500 tokens of standing direction, and you can practice in any community world for 20 replies with no account.

Updated

tokens of standing direction in session notes, read every turn
500
tokens of context on the free plan, your prompts included
6.4K
generation presets, from Balanced to Chaos
4
replies to try a prompt in any world, no account needed
20

What a roleplay prompt is

In AI roleplay, “prompt” means three different things, and each shapes the story at a different scale:

  • The scenario: the premise a story starts from, such as “a lighthouse keeper finds a stranger washed up alive after a storm that sank no ships.”
  • The first message: the opening scene, written out, which the storyteller continues from.
  • Your turns: every line you send afterward, steering the scene one reply at a time.

Behind all three sits the full prompt the app assembles for each reply: its own instructions, the world, your character, lore, memories, and the recent story. You don’t write that part directly, but everything you do write feeds it, and the storyteller writes the next part of the story from exactly what it is given. Vague in, vague out.

The craft is small, which is the good news. A handful of habits, used on every turn, separate a scene that drifts from a scene that moves.

The anatomy of a strong opening

An opening is a promise about what kind of story this will be. The strongest ones hold four things:

  1. A place, made concrete with one or two details you can see or hear.
  2. Pressure: something already in motion, such as a deadline, a threat, a secret, or a storm.
  3. Someone who wants something, so the world has a will of its own.
  4. A way in: a moment where the player’s character has to act.
FlatStrong
You are in a tavern.Rain hammers the shutters of the Gull and Lantern, and the only free seat faces a woman counting coins she plainly stole.
You wake up on a spaceship.Your cryopod opens eleven years early. The corridor lights are red, and someone has scratched your name into the inside of the lid.
You meet a mysterious stranger.The stranger at the crossroads knows your mother’s name, and asks you to deliver a letter to her grave.

Look at what the strong versions leave out: backstory, explanations, and the player’s feelings. Each ends at a moment of choice and trusts the player to step in.

Scenario prompts in three sentences

When you start a world from an idea, three sentences usually carry it. One says who the player is, one says what has just happened, and one says what is at stake:

  • Fantasy: “You are the youngest map-maker in the royal survey. This morning your newest map showed a valley that did not exist yesterday. The king wants it claimed by nightfall, and so does everyone else who saw it.”
  • Horror: “You are the night nurse at a hospice on the edge of the moors. The patient in room eleven has begun describing your childhood bedroom in detail. Your shift ends at dawn, and dawn is late tonight.”
  • Science fiction: “You pilot a salvage tug in the outer belt. You have just docked with a derelict freighter whose logbook ends in your own handwriting. Your air lasts six hours; the freighter’s has lasted forty years.”
  • Romance: “You run the last bookshop on a street of shuttered windows. The developer buying the block came in for a single book and has come back every day since. Tomorrow you sign papers on opposite sides of the same table.”
  • Mystery: “You are the only guest at a mountain inn cut off by snow. This morning the innkeeper was found in the locked wine cellar. Everyone still here had a reason, and none of them had a key.”

Short scenarios work because they leave the details to play. Each names a want, a clock, and a question, and none of them answers the question yet.

Writing the first message

The first message is the opening scene, and the storyteller continues straight from it. Everything in it works as an instruction by example: its length, its point of view, how much of it is dialogue, and what it leaves open.

  • Write it about as long as you want replies to be. A four-paragraph opening invites four-paragraph replies.
  • Pick the point of view on purpose. Second person and the present tense (“You step off the ferry”) are the classic choice for adventures; a character speaking to you directly suits the first person.
  • Use one sharp detail per sense, not five. Tar on the air and a bell somewhere over the water beat a paragraph of fog.
  • End on an open beat inside the story. A question from a character, an offer, a threat, a hand on a door. Stop before the answer, and skip the “What do you do?”
  • Leave the player’s character alone. Say what happens around them, never what they decide, say, or feel.

Two openings that do all of it

  • An adventure, in the second person: The ferry leaves you at Saltmarrow an hour after the last bell. The quay is empty except for a girl with a lantern, who holds out a key on a black ribbon. “Room seven,” she says. “Your sister paid for a week. She said you’d come.” Your sister has been dead for three years.
  • A character, in the first person: *I don’t look up from the chessboard when you sit down.* “You’re playing white. You’re also late, which I’ve counted as your first mistake.” *I slide a pawn forward and finally meet your eyes.* “Tell me why the duchess sent you, and I’ll tell you whether to stay.”

Both stop at a moment the player has to answer, and neither decides anything on the player’s behalf.

Prompt patterns for every turn

Once the story is moving, every turn you write is a prompt. A few patterns cover most of what you will want to do:

PatternUse it whenExample
The attemptYou want to actI wedge the crowbar under the hatch and lean on it, listening for the guard.
A line with a purposeA conversation should go somewhere“You knew him,” I say, setting the photograph between us. I want to see her flinch.
The pointed questionThe world is hiding somethingI ask the ferryman what the bell means, and why he crossed himself when it rang.
The time skipNothing worth playing happens for a whileWe ride through the night and reach the border fort at dawn.
The scene cutA scene has done its workLater, alone in the archive, I unroll the map we stole.
The slow-downA moment deserves weightI take a long breath before I open the letter, and read it twice.
The handoffYou want the world to surprise youI sit by the window and watch the square fill up.

Each pattern says what your character tries, never how it turns out, and each gives the storyteller one clear thing to answer.

Two habits make every pattern stronger. Use names (“I ask Marta,” not “I ask her”), because a name is what lets lore and memory find their way into the scene. And put your intention in the scene: a line of dialogue lands harder when the storyteller knows what your character hopes it will do.

Steering without stopping the scene

Most steering should happen inside the story. A character can change the subject, leave the room, make a promise, or start a fight, and the scene bends without anyone stepping out of it. When you need something no character can do, like skipping a week, changing the tone, or undoing a fact, step outside with an out-of-character note.

Keep OOC notes short, clearly marked, and specific:

  • “(OOC: skip ahead to the morning of the trial.)”
  • “(OOC: keep the next scene quiet. No combat for a while.)”
  • “(OOC: Marta didn’t see the knife. Please revise her reaction.)”

An OOC note is the wrong tool for direction that should last, because it scrolls away with the story. Put lasting direction where the storyteller reads it every time:

DirectionWhere it belongsWhen the storyteller sees it
A one-time changeAn OOC note in your turnFrom the next reply, until it scrolls out of view
The current mood, goal, or secretSession notesEvery reply in that session
Rules for the whole worldStyle rulesEvery reply in every session
A fact about a person or placeA lore cardWhen it’s named, or always if pinned
An event that must happenA Loom threadWhen its conditions are met

Two quieter controls round out the set. Continue lets the storyteller carry the scene forward without a turn from you, which helps when a reply stops mid-thought. Regenerate asks for a new version of the latest reply, and if several versions miss the same way, the problem is in the prompt, not the luck of the draw.

Prompts to borrow

Openings and steering lines you can paste and adapt:

  1. A heist: “The vault opens at midnight for exactly four minutes. You have the code, the guard has your brother, and the clock above the bank has just struck eleven.”
  2. A haunting: “Every night at 3:12 the house phone rings. Tonight, for the first time, you answer, and the voice on the line is your own.”
  3. A rivalry: “You and your rival are snowed into the same mountain lodge with one working fireplace and a manuscript you both claim to have written.”
  4. A frontier: “The colony ship has woken you alone, three years from landfall, and its records say the others asked not to be woken.”
  5. A court intrigue: “The queen names you her food taster on the same morning the old taster is found smiling in the kitchen garden.”
  6. A quiet one: “You inherit a tea shop in a seaside town, along with its one regular, who has ordered the same cup every day for forty years and won’t say why.”
  7. A pacing note: “(OOC: slow down. Let this conversation breathe before anything else happens.)”
  8. A tone note: “(OOC: make the next scene lighter. Nobody is in real danger yet.)”
  9. A twist request: “(OOC: bring in a complication I won’t see coming, but keep it fair.)”
  10. A time skip: “(OOC: skip three days. We reach the capital at dusk.)”

Treat these as shapes, not scripts. The prompts that play best borrow a structure and fill it with something only you would think of.

Prompt mistakes and quick fixes

MistakeFix
An opening that explains the whole worldStart inside a scene, and let the world come out in play
A first message that ends on sceneryEnd on a question, an offer, or a threat
Writing the outcome: “I win the duel”Write the attempt, and let the story decide
One-word turnsAdd an action, a line, or an intention
The same rules pasted into every messageMove lasting rules into session notes or style rules
Arguing with a reply inside the storyRegenerate, edit, or step out with one OOC line
“Make it epic”Concrete direction: “end the scene at the bridge, under fire”

The storyteller can only answer what it is shown. Show it the scene you want, and it will meet you there.

Questions

Roleplay prompts, answered.

01What makes a good AI roleplay prompt?

A concrete place, pressure that is already building, someone who wants something, and a moment where your character has to act. Leave out backstory and explanations; the story can supply them in play.

02How long should a roleplay prompt be?

A scenario works in about three sentences. A first message reads best at the length you want replies to be, and most turns land in two to five sentences.

03How do I stop the AI from writing my character’s actions?

Keep your opening and sample dialogue free of your character’s choices, regenerate or edit any reply that decides for you, and add a session note such as “never describe my character’s thoughts or decisions.” LoreWeaver’s storytellers are also instructed never to act or speak for your character.

04What is the difference between an OOC note and session notes?

An OOC note changes the story from the next reply and then scrolls away with it. Session notes stay put: on LoreWeaver, the storyteller reads them on every turn, up to 500 tokens, until you change them.

05How do I get longer or shorter AI replies?

Write turns at the length you want, since the storyteller tends to follow your lead. On LoreWeaver you can also set Max Tokens, the longest a reply can run, in the generation settings, switch on Dynamic Length so replies grow and shrink with the scene, or choose the Cinematic preset for the longest replies.

06Where can I find roleplay prompt ideas?

The story prompts page collects opening lines by genre, and every community world in the Hub starts from an opening you can play for 20 replies without an account.

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