Reaction Time
Test your visual reflexes by clicking as soon as the screen changes color.
Average: 284ms
Service Docs
This site publishes public API discovery documents, a read-only MCP endpoint, agent skills metadata, and an optional OAuth client-credentials flow for managed agent integrations.
GET /api/health returns service health and discovery links.GET /api/games returns the benchmark catalog.GET /api/games/{slug} returns details for a single benchmark.GET /api/agent/summary requires a bearer token with the site.read scope. Tokens are issued through POST /oauth/token using the client_credentials grant when deployment credentials are configured.
Production deployments should set AGENT_CLIENT_ID, AGENT_CLIENT_SECRET, and AGENT_OAUTH_SECRET. Local development falls back to non-production defaults so the flow can be tested without secrets.
/.well-known/api-catalog publishes an RFC 9727 API catalog in application/linkset+json./openapi.json publishes the REST description in OpenAPI 3.1./.well-known/oauth-authorization-server publishes OAuth authorization-server metadata./.well-known/oauth-protected-resource publishes protected resource metadata for managed agent integrations./.well-known/mcp/server-card.json publishes the MCP server card for /api/mcp./.well-known/agent-skills/index.json publishes the agent skills discovery index and skill digests.The read-only MCP endpoint at /api/mcp exposes structured catalog and discovery tools for off-page agents. On-page browser agents can also discover WebMCP tools that list benchmarks, open a benchmark page, and return discovery links.
Test your visual reflexes by clicking as soon as the screen changes color.
Average: 284ms
Click moving targets as quickly and accurately as possible under time pressure.
Best Score: 92%
Memorize longer and longer number sequences without making mistakes.
Best Level: Level 7
Track whether a word has appeared before and avoid confusing repeats with new words.
Best Score: 85 words
Measure typing speed and accuracy with a timed phrase-copying challenge.
Best WPM: 72 WPM
Repeat an increasingly long visual pattern of highlighted tiles.
Best Level: Level 12