AI Character Builder

Create V2 Character Spec JSON cards for SillyTavern and local roleplay.

Features

  • V2 Spec Compliance: Generates strict JSON structures matching the `chara_card_v2` specification.
  • Zero Data Tracking: Your highly personal character definitions are never sent to a server.
  • No Login Required: Build and export characters instantly without creating an account.
  • Example Dialogue Formatting: Dedicated fields for `mes_example` to teach the AI dialect.
  • Seamless download directly to your computer.

How to Use

  1. Fill out the Character Name and Personality Traits.
  2. Write a detailed Description of their appearance and backstory.
  3. Set the Current Scenario (where the roleplay begins).
  4. Write the First Message (Greeting) the AI will send.
  5. Add Message Examples formatted with {{user}}: and {{char}}:.
  6. Click Download JSON and import it into your chat interface.

Frequently Asked Questions

How do I add an image to this character card?

Import this JSON file into SillyTavern. From there, upload a PNG avatar, and SillyTavern will automatically embed this JSON data directly into the PNG file.

What is the W++ format?

W++ is a specific way to format the Description box to save tokens. You can absolutely paste W++ formatted text into the Description box here.

Can I use this file on Character.ai?

No. Character.ai operates as a closed ecosystem. This tool is designed for open-ecosystem frontends like SillyTavern, Agnai, and JanitorAI.