VfxSmith
Search, generate, refine and export animated pixel art VFX for 2D games. Supports transparent sprite sheets and Godot 4 packs via OAuth.
Hosted MCP Server
npx add-mcp 'https://vfxsmith.com/mcp'Installs into Claude Code, Codex, Cursor and more
Documentation
Connect your agent
Choose your tool, copy the prompt and paste it into a new conversation.
Paste into Claude Code
Set up VfxSmith in Claude Code. Run: claude mcp add --transport http --scope user vfxsmith https://vfxsmith.com/mcp
Open /mcp and select vfxsmith → Authenticate to trigger browser OAuth; guide me through that UI step if you cannot open it. Let me choose permissions, credit ceiling and expiry in the browser. Download https://vfxsmith.com/skills/vfxsmith/files.json and every listed file from that same directory into ~/.claude/skills/vfxsmith/, preserving relative paths. Do not overwrite an existing customized skill without checking it. Read the installed skill and follow its brief-first workflow. Reload the client if needed, then call VfxSmith account_usage and report the connection, credit ceiling and expiry. Do not generate anything during setup. Never ask me to paste tokens.
Raw commands & configuration
claude mcp add --transport http --scope user vfxsmith https://vfxsmith.com/mcp
# In Claude Code, open /mcp, select vfxsmith and Authenticate.
Skill: SKILL.md · Complete file list
Install folder: ~/.claude/skills/vfxsmith/
Use your agent’s file tools or HTTP downloader to save each listed file. No VfxSmith repository or additional package is required.
After consent, your agent installs the official skill and checks your account. If new tools are not visible yet, restart the client and ask it to call account_usage.
Looking for the pixelfx Claude skill?
The upstream pixelfx project by Patch is an MIT-licensed, code-driven pixel effects library and Claude Code skill for making your own effects. Browse its free assets at pixelfx.io. That upstream skill is separate from VfxSmith’s hosted account and generation service.
VfxSmith MCP + official skill
The MCP server gives Claude Code, Codex and other compatible clients access to library search, your saved assets, paid generation and refinement, previews and export downloads. The official VfxSmith skill teaches the agent how to brief, inspect and install those assets. A skill alone does not authorize your account; connecting MCP alone does not install the workflow instructions.
VfxSmith builds on pixelfx and preserves Patch’s copyright. It is a separate product, not an upstream endorsement. Source and licenses.
A clear brief before credits
Your agent inspects the game’s sprites, palette and engine, then states a short brief. It asks only for what it cannot infer.
Subject and action. Genre and camera. Sprite size and pixel scale. Palette. Duration and loop. Impact timing. Editable parts. Transparent background. Target engine.
Reuse → create → inspect → install
Search your assets and the free 245-effect library first. Refine an owned effect when it is close. For a new run, use an explicit credit limit and track the same job until it finishes.
Inspect the preview, then export a Godot scene or PNG sprite sheet with animation JSON directly into your project.
You control access and spending
Sign in and approve in your browser. Choose read access, optional generation, a total credit ceiling and an expiry of 1–30 days. Never paste tokens into a prompt.
Usage-based credits
Usage-based · usually 4–8 credits. Charge = actual model cost ×2 at $0.05 per credit. At least 4 credits to start; up to 16 reserved, bounded by your authorization. Delivery releases unused credits; canceling charges usage so far.
Optional thinking: low (Standard, default) or medium (Deep). Deep may take longer and use more credits.
Failed runs without a delivered version are refunded. Revoking access stops new requests; a run already started may finish.
What agents can and cannot do
Search the library and your accessible assets, inspect previews, start a generation or refinement job with permission and credits, poll its status and download exports. The agent uses its own local file tools to install a Godot scene or PNG sprite sheet into your project. It should check the target files and inspect the result before overwriting anything.
Read-only access cannot generate. Generation needs the generation scope, enough account credits and a sufficient connection credit ceiling. An expired or revoked connection must be authorized again. MCP clients need Streamable HTTP and OAuth discovery with dynamic client registration; a client without that support cannot use this setup.
Keep the result honest
Generation may need refinement; inspect silhouette, timing, transparency and impact frames in your game. Manual speed changes affect exports. Original generated assets follow the generated-output terms; the MIT library and incorporated upstream materials keep their notices.
Generate, export and instance in Godot · Write a slash brief