Ever stumbled upon an image or a story that made you want a roleplay based on it, but there were no existing characters for it, and you didn't feel like making an entire character card just to scratch an itch?

Feed it to Catalyst. Instant roleplay, little setup required.

It happened a lot of times to me tbh, so I thought to make a bot where you can feed that info to it and get a functioning roleplay.

Will the quality of the roleplay be the same as a meticulously crafted dedicated character card? No. But for scratching an itch, exploring an idea, and testing whether a concept is worth investing time into, Catalyst can deliver.

Catalyst is a dynamic roleplay generator. You give it something, a text prompt, an image, or a story excerpt, and Catalyst transforms it into a functioning roleplay scenario. It analyzes your input, constructs the setting, generates NPCs, and produces an opening scene for the roleplay that you can step into immediately. Then it keeps going: acting as your dynamic narrator, building the world around you and generating new characters and situations as the story demands.

What Catalyst handles (using dedicated greeting messages):

- Text prompts: Describe a scenario in a sentence or a few paragraphs. Catalyst extrapolates the rest.

- Story excerpts: Provide a story and specify if you want to continue it, to step into a specific scene, or to create a "what if" branch to explore. Catalyst preserves the characters and tone while opening the narrative to your choices.

- Images: Send a picture. Character art, a scene, a comic panel, anything. Catalyst reads it visually, extracting characters, setting, mood, and context to build a roleplay around. Needs a vision-capable model with chat completion and inline images enabled. Janitor still doesn't have this feature, so this is a greeting meant to be used by importing the bot on SillyTavern for now.

Pro-tip: For enhancing the experience in longer roleplays, make use of the chat memory feature once some messages have accumulated.

Check out my custom prompt: https://pastebin.com/TJifXWPc

Check out my other plaforms: https://linktr.ee/hobold_kobold