cf-imgbed-mcp endpoints: GET /img/:key (public) PUT /api/upload (multipart 'file' or raw image/* body) GET /api/list (?prefix=&cursor=&limit=) GET /api/info/:key DELETE /api/:key ALL /mcp (MCP Streamable HTTP) Auth: Cloudflare Access JWT (header cf-access-jwt-assertion) on /api/* and /mcp.