Who builds MotionSpec.
MotionSpec is built and maintained by Kevin Fröba through Fröba Sales Solutions UG (haftungsbeschränkt), a company registered in Kronach, Germany. It is a small, deliberately focused operation: one maintainer, a public MIT core, and a stated scope on every page rather than broad claims.
The person behind it
Kevin Fröba is the founder and maintainer. The work concentrates on one narrow, under-served layer of the web stack — UI motion — and on the security engineering around operating it: an SSRF-guarded audit service, key-gated infrastructure, an SBOM, and a fuzz-tested core. The company details, including the commercial register entry (HRB) and VAT ID, are published in full on the MCP docsPricingImpressum.
What MotionSpec is
MotionSpec checks and compiles UI animation in AI-generated web apps — it does not generate AI video. The core is MIT-licensed and public on npm: 40 reviewed motion primitives and 295 automated tests that compile reduced-motion-safe, performance-budgeted animation. The operated layer — the hosted checking service and catalog upkeep — is the commercial product. MotionSpec does not claim to make a site EAA- or WCAG-compliant; the honest scope is stated on every page.
How to check what we claim
The point of an open core is that you don't have to take any of this on faith:
- Read the source and the test suite on npm and GitHub — no key required.
- Run the free motion check on any URL; it's the same MIT engine the product uses.
- Follow the tool-independent method in How to verify web motion accessibility to check any site by hand.