MCP endpoint for the Wide Rivers ERP. This page exists so the domain
resolves in a browser; the real traffic is JSON-RPC over HTTP to this
same URL with an Authorization: Bearer header.
Supports OAuth 2.0 with Dynamic Client Registration (RFC 7591) for the Claude connector UI, and static bearer tokens for CLI / Claude Code access.
Configure in Claude Desktop / claude.ai under Settings → Connectors → Add custom connector.