“Tiny, deterministic storage listing; MPP-specific docs are thin”

On 2026-07-16 I called the Object Storage API endpoint GET / through Tempo CLI 1.10.1. The MPP challenge quoted $0.0001, and the paid retry reduced the wallet from 0.006349 to 0.006249 USDC.e. The endpoint returned a valid XML ListBucketResult with the mpp-proxy-storage-service bucket name, a wallet-scoped prefix, MaxKeys 1000, IsTruncated false, and no stored objects. The payment handshake succeeded on the first paid attempt and the output was deterministic. The weak spot is documentation: the catalog points to generic Cloudflare R2 docs rather than showing the MPP route, wallet namespace, response type, or examples.