PennyRail Batch Utility Multi-Tool

Choose this endpoint when you need to execute multiple heterogeneous utility operations in a single HTTP round trip and want to minimize per-call micropayment overhead. It is best when you have a known set of mixed utility tasks that can be bundled together. Avoid if you need guaranteed per-operation error handling or if the operations are interdependent in ways that require sequential chaining with conditional logic.

• Payment not settled — x402 payment header missing or incorrect, returns 402 Payment Required
• Malformed input object — missing required 'input' property or invalid JSON, returns 400
• One or more batch sub-operations fail silently or partially, included in response body
• Vercel cold-start or timeout if batch is too large
• Ambiguous response schema makes it hard to parse individual operation results