{"id":"mcpcat-webmcp-react","name":"webmcp-react","af_score":54.0,"security_score":49.2,"reliability_score":28.8,"what_it_does":"Provides React hooks/components (<WebMCPProvider>, useMcpTool) that expose typed tools to WebMCP via navigator.modelContext in a transport-agnostic, SSR-safe way. It uses Zod-first tool input definitions with optional JSON Schema fallback, and includes a polyfill for environments without native WebMCP. Tools can dynamically register/unregister with React lifecycle and supports annotations and execution state via the hook.","best_when":"When you want to expose typed, client-side tool functions to WebMCP-compatible agents (often via the WebMCP Bridge extension) and you value React lifecycle integration and input validation via Zod.","avoid_when":"When your environment cannot use navigator.modelContext (and you cannot rely on the polyfill/bridge), or when you need strong auth/rate limiting/security controls at the tool layer.","last_evaluated":"2026-03-30T15:35:26.550556+00:00","has_mcp":false,"has_api":false,"auth_methods":[],"has_free_tier":false,"known_gotchas":["WebMCP is described as experimental; browser support and behavior may change.","Desktop MCP clients typically require the WebMCP Bridge extension to reach navigator.modelContext.","Tools register/unregister with React mount/unmount; agents may need to handle tools appearing/disappearing as UI state changes.","No library-level authentication/authorization is provided; ensure handlers enforce permissions."],"error_quality":0.0}