# Character builder and 3D toy animation > A Magnific demo: a browser editor with sliders for head size, body shape, height, coloured light and backdrop, built in one chat with Claude through the Magnific MCP, then a 3D art-toy animation of the same character changing shot by shot. - Kind: Video - Page: https://meetreference.com/v/3d-toy-character-builder-sliders/ - Ready-to-use agent handoff: https://meetreference.com/v/3d-toy-character-builder-sliders/agent.txt - Exact prompt as plain text: https://meetreference.com/v/3d-toy-character-builder-sliders/prompt.txt - Authorship: Not stated - Made with: Claude.ai - Model: Claude Opus 5.5 - Built with: not stated - Services: Magnific - Skills or plugins: Magnific MCP - Style: Product launches; 3d toy, character animation, ui demo, sliders, pixar-style, product demo, studio backdrop - Length and format: 20 sec, 16:9 (1920x1080 source) - Shared by @magnific in X, Sep 28, 2026: https://x.com/magnific/status/2104587476014964879 - Prompt fidelity: Verbatim. This is the complete prompt exactly as the creator published it. ## Before you start Guidance from Reference, separate from the creator's instructions. 1. Read the reference and inspect the project, installed libraries, and available agent skills before writing code. Reuse suitable tools already present. 2. Prefer the creator-reported libraries and skills when they fit the task. Explain what useful additions help with, and install missing project dependencies or relevant skills from official sources when the environment and the user's existing permissions allow it. Respect the project's package manager and setup rules; do not ask again for routine setup already authorized. 3. Distinguish tools used by the creator from your own recommendations. A listed tool is not automatically required, and an empty tools or requirements list means the setup is unknown, not that nothing is needed. 4. Ask concise questions when missing inputs or choices materially affect the result: paid services, credentials, the user's assets, or a different production approach. Use existing answers and permissions; continue independent work while waiting. 5. If a useful library, skill, or service cannot be installed or used, explain an available alternative and its expected effect on quality, features, or effort. Get the user's choice before a material compromise; otherwise state the fallback and continue. Never silently simplify the result or claim to have used a tool you did not use. Requirements reported by the source: A Magnific account, with the Magnific MCP connected to Claude; A character PNG with its background removed. ## Recreating this video These are the creator's published instructions, unedited. To adapt it: In the starter prompt, change the controls after "tweak it in real time:" to the ones you want. In the video prompt, replace the character description in brackets ("short wavy chestnut bob, brown cap with pins...") and rewrite the six SHOT lines. ## Prompts ### 1. Starter prompt for Claude ```text Build a live web editor for characters I generated on Magnific. Upload a PNG and tweak it in real time: head size, body shape from lean to sturdy, height, a colour lighting that tints the whole character, and a background for 4:5 PNG export. White UI, controls beside the character, zoom, save, delete and back to original ``` ### 2. Prompt for the video ```text Stylized 3D art-toy character animation, Pixar-level render, 20 seconds, 16:9. The girl from the reference images (short wavy chestnut bob, brown cap with pins, freckles, rosy cheeks, dark brown oversized hoodie, olive cargo trousers, chunky trainers) on a seamless off-white studio backdrop, soft diffused light, playful squash-and-stretch cartoon physics. SHOT 1: Full body, she stands bored with hands in her hoodie pocket, side-eye. SHOT 2: Her head inflates like a balloon with a soft boing, she pats her cheeks in surprise, then it pops back to normal. SHOT 3: Her legs stretch taller, she wobbles and looks down, unimpressed. SHOT 4: A coloured light washes over her, orange to violet to electric blue, she shades her eyes. SHOT 5: The backdrop snaps from lilac to yellow to powder blue, she strikes a new pose on each beat. SHOT 6: Slow push-in to a close-up, she looks into camera, raises an eyebrow and smirks. ``` ## What it looks like Written by Reference from the video frames, not by the creator. A soft 3D art-toy girl in a cap and oversized hoodie stands on a plain studio backdrop while an editor panel on the right shows the sliders and swatches that change her. - Color: Warm off-white backdrop that switches to magenta, butter yellow and powder blue, with a chocolate-brown hoodie and cap, olive trousers, rosy cheeks, and a strip of bright colour swatches. - Type: Small black sans labels in the panel (Character Builder, Head size, Body shape, Height, Colour lighting, Background), the Magnific wordmark top right, and a red "Claude Opus 5.5" tag top left. - Framing: 16:9 frames with the character centred or left of centre and the control panel pinned to the right edge. Shots alternate between full body and close-ups of the face; a cursor drags sliders and taps swatches. - Structure: Full body with hands in pockets, the head grown huge with puffed cheeks, hands on the inflated cheeks, legs stretched taller, a magenta light wash with her shading her eyes, a yellow backdrop pose, then a powder-blue close-up that ends on a smirk. Storyboard, nine frames spread across the video: https://meetreference.com/media/3d-toy-character-builder-sliders/storyboard.webp - Frame 1 at 1.1s: https://meetreference.com/media/3d-toy-character-builder-sliders/f1.webp - Frame 2 at 3.4s: https://meetreference.com/media/3d-toy-character-builder-sliders/f2.webp - Frame 3 at 5.6s: https://meetreference.com/media/3d-toy-character-builder-sliders/f3.webp - Frame 4 at 7.8s: https://meetreference.com/media/3d-toy-character-builder-sliders/f4.webp - Frame 5 at 10.1s: https://meetreference.com/media/3d-toy-character-builder-sliders/f5.webp - Frame 6 at 12.3s: https://meetreference.com/media/3d-toy-character-builder-sliders/f6.webp - Frame 7 at 14.5s: https://meetreference.com/media/3d-toy-character-builder-sliders/f7.webp - Frame 8 at 16.8s: https://meetreference.com/media/3d-toy-character-builder-sliders/f8.webp - Frame 9 at 19.0s: https://meetreference.com/media/3d-toy-character-builder-sliders/f9.webp ## How it was made, per the creator - Notes: The character was generated on Magnific and its background removed first. The editor came from a single chat with Claude connected to the Magnific MCP; it runs in the browser, so edits use no credits. The creator doesn't name the model that made the animation. > All it takes is one chat. > (@magnific) ## Links - Watch: https://x.com/magnific/status/2104587476014964879 - Original post: https://x.com/magnific/status/2104587476014964879