MotionSpec — verified web motion (reduced-motion / WCAG) MCP Server

by masterplayspots Your server? Claim it

answering

MotionSpec — verified web motion (reduced-motion / WCAG) is answering right now. Last checked moments ago. 112 installs a week from npm. It exposes 5 tools. Last commit 11 Sep 2026.

Deterministic motion compiler + validator: reports WCAG 2.2.2 pause-path candidates, fail-closed.

Installs per day peak 208 · avg 58 · +109% w/w

a month agotoday

Uptime history 47 days of history

47 days agonow

100.0%

Uptime 24h

92 of 92 checks

Tools

read from the server

243 ms

Response time

average over 24h

112

Installs / week

npm and PyPI

What changed 13

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 2 September 2026. No other catalogue keeps this.

11 Sep 4 tool descriptions were rewritten5 times that day motion_audit, motion_catalog, motion_compile and 1 more

11 Sep a tool changed version

4 Sep 3 tool descriptions were rewritten motion_audit, motion_compile, motion_stats

2 Sep 3 tools appeared motion_audit, motion_compile, motion_stats

2 Sep a tool description was rewritten motion_catalog

and 1 more, back to 2 September 2026

What the code does

We read the source, 20 h ago · tools taken from the live server · rules 3dff92dd89df

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

Builds a file path from a variable bin/promote-gate.js:112, src/forge/generate.js:144, [пакет] src/forge/generate.js:144 и ещё 1

  const dir = path.join(candidatesDir, name);

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 0 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add motionspec --transport http https://api.motionspec.dev/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "motionspec": {
      "url": "https://api.motionspec.dev/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.motionspec]
url = "https://api.motionspec.dev/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "motionspec": {
      "url": "https://api.motionspec.dev/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "motionspec": {
      "url": "https://api.motionspec.dev/mcp"
    }
  }
}

Available tools 5

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

motion

motion_audit

Requires a Dev Key ($39/mo) or Agency plan ($249/mo) on the hosted endpoint (motionspec.dev/pricing?src=mcp). Static motion-a11y checker: fetches a URL's HTML + linked stylesheets and scans the CSS for (1) animation/transition that moves without an effective (cascade-aware) prefers-reduced-motion guard, (2) animated non-transform/opacity properties, (3) infinite animations with no pause path, (4) <marquee>/autoplay >5s. Colour/opacity-only transitions are not motion (WCAG 2.3.3). Same engine and scoring as the free site check at motionspec.dev/motion-check. Returns {ok, score|null, status, findings, groups, summary, badge, disclosures, coverage, markdown}; pages without CSS motion return status 'not-measurable' with score null (runtime motion such as WAAPI/GSAP/WebGL is not audited); loading indicators (spinners, skeletons) are reported as 'review', not as violations. A clean, measurable page earns the badge 'reduced-motion-safe'. Does network I/O (openWorldHint).

motion_catalog

Returns the catalog of verified motion primitives (names, purpose, parameter schemas, defaults) plus the authoring rules for writing a MotionSpec. Call this FIRST, then write the spec yourself and validate it with motion_validate (motion_compile runs in the CLI or with a key on the hosted endpoint). Free motion check: motionspec.dev/motion-check · keys for the hosted endpoint: motionspec.dev/pricing?src=mcp.

motion_compile

Requires a Dev Key ($39/mo) or Agency plan ($249/mo) on the hosted endpoint (motionspec.dev/pricing?src=mcp); runs locally for free with 'npx -p motionspec motion compile <spec.json>' (MIT). Validates (fail-closed) and deterministically compiles a MotionSpec into production-ready vanilla-GSAP JavaScript and CSS, with enforced prefers-reduced-motion fallbacks and a performance-budget report. Same spec always yields identical code. Returns {ok, js, css, report} or {ok:false, errors}.

motion_stats

Requires a Dev Key ($39/mo) or Agency plan ($249/mo) on the hosted endpoint (motionspec.dev/pricing?src=mcp). Summary of routing/compile telemetry (counts per outcome). Escalation clusters indicate which new primitive the catalog needs next.

motion_validate

Checks a MotionSpec against the schema, the primitive allow-list, parameter bounds and injection rules. Fail-closed: returns ok=false with precise errors. Returns {ok, errors, warnings, deprecations, catalogVersion}. IMPORTANT: warnings[] carries the WCAG 2.2.2 / reduced-motion findings and can be non-empty while ok=true — a spec that compiles is not automatically accessible. Use to pre-check a spec before compiling.

Endpoints

URL	Transport	State	Latency	Checked
https://api.motionspec.dev/mcp	streamable-http	answering	185 ms	0 min ago

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MotionSpec — verified web motion (reduced-motion / WCAG) — questions

Answers built from our own checks of this server.

What can MotionSpec — verified web motion (reduced-motion / WCAG) do?

It exposes 5 tools, read directly from the server on our last check. Among them: motion_audit, motion_catalog, motion_compile, motion_stats, motion_validate. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is MotionSpec — verified web motion (reduced-motion / WCAG) working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 243 ms. The bar chart above shows every period we have measured.

How do I connect MotionSpec — verified web motion (reduced-motion / WCAG)?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does MotionSpec — verified web motion (reduced-motion / WCAG) need an API key?

No. MotionSpec — verified web motion (reduced-motion / WCAG) completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 5 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is MotionSpec — verified web motion (reduced-motion / WCAG)?

It answers our handshake in 243 ms on average, which is faster than 58% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

How many people use MotionSpec — verified web motion (reduced-motion / WCAG)?

The npm package motionspec was installed 112 times in the last week. Week over week that is +109%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is MotionSpec — verified web motion (reduced-motion / WCAG) open source?

Yes — it is published under the MIT licence, written in JavaScript and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.