motionprompts

motionprompts MCP

[motionprompts: GSAP and WebGL components, each with a live demo and a validated prompt]

An MCP server over a catalog of 259 production-grade GSAP motion components (motionprompts.dev). A curated set of components is free with the full prompt; the rest of the library returns a 12-line preview until you pass a Full Stack key (Authorization: Bearer mpk_..., from motionprompts.dev/account). Plans: motionprompts.dev/pricing. It does not generate animations: it hands you the ones that are already solved and debugged, tells you how to compose them without them fighting each other, and says so plainly when the catalog does not have what you asked for.

What it exposes

Hosted endpoint — no install

The server runs live at https://motionprompts.dev/mcp (Streamable HTTP, stateless; a Bearer key is optional and unlocks the paid prompts). Add it to Claude Code with one command and you are done:

claude mcp add --transport http motionprompts https://motionprompts.dev/mcp

Discovery manifest: motionprompts.dev/.well-known/mcp.

Local installation

Requires Node 20 or newer. No API key and no environment variables for the free set; the local package carries only the free prompts in full (the paid ones as previews), so for the whole library use the hosted endpoint with your key.

The package is on npm as motionprompts-mcp — no clone needed:

claude mcp add motionprompts -- npx -y motionprompts-mcp

Or from a clone:

git clone https://github.com/VanguardiaAI/motionprompts-mcp.gitcd motionprompts-mcpnpm install

Claude Code

claude mcp add motionprompts -- node /absolute/path/to/motionprompts-mcp/mcp/server.mjs

Claude Desktop and other clients

In the client's JSON configuration:

{  "mcpServers": {    "motionprompts": {      "command": "node",      "args": ["/absolute/path/to/motionprompts-mcp/mcp/server.mjs"]    }  }}

Check that it works:

npm run verify      # end-to-end battery over the real MCP protocol

To self-host the HTTP endpoint instead of stdio: npm run start:http (defaults to 127.0.0.1:4478; configure with MCP_HTTP_HOST / MCP_HTTP_PORT).

About API keys: none needed

This server uses no key and cannot spend anyone's money. It reads no environment variables, asks for no secrets, and makes not a single network call: it opens files from disk and returns text. It is a catalog reader.

That includes plan_imagery, which talks about image models and transparent backgrounds: it returns text. It is a recipe, not a generator. It names the three models we use ourselves because that is the useful information — which one is for what — but it calls none of them, and the writing and cut-out rules work the same with whatever provider you prefer.

If you came looking for the notice about kie.ai: that key belongs to a separate authoring tool — the one that generated the photography for the example pages — which is not part of this package. It is excluded on purpose, so nothing in here can generate images or bill anyone. If you want photography for your pages, use whatever service you prefer with your own account.

How to use it well

Order matters, and it is the hardest thing to get right:

1. plan_page first. It returns sections, not components: a page can only be as rich as the list it is composed from, and composing straight from animation mechanics flattens it to five sections. Adjust the list to the actual brief before going on.

2. suggest_mechanics per section, with avoid to exclude what you already used. Without it you will repeat components: broad roles offer a hundred-plus candidates with tied scores, and reusing the same need string always returns the same first hit.

   avoid is for not repeating yourself, not for animating less. If you discard the #1 because it is taken, take the #2 — they are tied. A section left static because its first candidate was already used is the most expensive failure of this flow, and it was literally an if in the example script.

3. get_integration_contract with all the slugs at once, before writing a line, and with moving_sections set: it is the coverage audit.

4. get_component_prompt per component. Re-dress, don't reimplement: change images, copy, palette, typography and element counts, and keep the mechanic. Discard a component only if its MECHANIC does not fit — never on aesthetic taste.

5. plan_imagery before writing a single image prompt, with the same section list.

Five roles are declared catalog gaps (faq, data, pricing, testimonial, reference): there is nothing for them among the 259 components. But "no component" does not mean "this section stays still": they are three to five sections out of a thirteen-section page, and suggest_mechanics returns for each one a recipe written in the token vocabulary (hand_written_recipe). For everything else, adopt.

Overshoot rather than undershoot

plan_page returns a motion_coverage block with the math done: how many sections should move, which are covered by adopting and which by recipe. One of them ending up with nothing is a defect of the page, not a style decision. The mistake people make is not excess: it is spreading four mechanics across the showy sections and leaving the rest blank. What saves a page from noise is not scarcity of motion — it is everything moving in the same language, and the motion system already takes care of that.

Images are what still gives a generated page away

With architecture and motion solved, what keeps ringing false is the imagery. plan_imagery encodes the three measured defects and their remedy:

• The image belongs to the industry, not to the section. Competitor test: if the prompt would work unchanged on a competitor's page, it is generic. It must carry a fact that is only true on this page.
• Nobody appears. People go to nano-banana-2 and only that one: the other two give them a recognizable tint or plainly cannot do faces.
• Everything is a rectangle with a background. Cut-outs go to gpt-image-2.5 with background: transparent, which returns real alpha (the magenta chroma key is kept only as a fallback for old raws). And they are requested in sheets of six — an invisible 3×2 grid — because a generation costs the same whether it carries one or six. A shot that fails on one detail is retouched image-to-image from its own raw, not re-rolled.

And logos are never generated: they are looked up on Wikimedia (Wikidata → P154 → Commons). No model draws a real logotype without breaking the letters, and a marquee of invented brands reads as fake instantly.

Pages built with it

The source repository contains five complete pages built with this server, each with a README documenting which mechanic was adopted, which was re-dressed and which was discarded and why. Every component in the catalog has a live demo and build notes at motionprompts.dev.

What this distribution does NOT carry

The components' source code. You get the prompts, the metadata, the composition rule engine and the server. You do not get each piece's index.html / script.js / styles.css.

That is not a gap: it is how these are meant to be used. The prompt is the product — a self-sufficient brief that rebuilds the mechanic from scratch and adapts it to your page, instead of pasting someone else's component into it. The example pages were built exactly that way: adopting mechanics and re-dressing them, not copying code.

get_component with include: ['source'] says so explicitly and returns the live demo and the prompt URL instead. Everything else — search_components, plan_page, suggest_mechanics, get_integration_contract, get_component_prompt — works the same.

License

PolyForm Noncommercial 1.0.0 with mandatory attribution. Noncommercial use allowed; commercial use requires a separate license. Any permitted use must keep the notice and visibly credit motionprompts.dev. See LICENSE.

It is not an OSI-approved license, so npm and GitHub will flag it as non-standard. If you are going to rely on it for anything serious, have a lawyer read it: I am not one.