Delx Commerce — Pluck Values by Key from Array of Objects

Use this endpoint when you need a simple, cheap, stateless utility to extract a single field from an array of JSON objects without spinning up custom code. Ideal for agent pipelines that need to flatten structured data on the fly, especially when paying per-result via USDC on Base or Solana (x402 protocol) is acceptable and no signup or API key management is desired.

• Key not found in any items — returns empty values array with count 0
• Items array is empty — returns empty values array
• Malformed input (missing key or items fields) — likely 400 error
• Payment failure via x402 — 402 response before processing begins
• Mixed types in items where some objects lack the specified key — partial results