agent-exec Storage Object Replace

Use this endpoint when you already have a storage object ID and want to overwrite its content entirely rather than create a new object. It is the right choice when you need to update agent state, refresh a cached artifact, or rename a label while preserving the object's identity. Prefer this over a fresh store when you want the retention window to be the longer of old vs new, avoiding unintended shortening of previously paid retention. It requires no account or API key — only a valid USDC micropayment via x402.

• Object ID not found — returns 404 if the specified storage ID does not exist
• Payment insufficient or invalid — HTTP 402 if the submitted payment doesn't cover the required plan price
• Plan too small for new content — service auto-selects the smallest fitting plan and quotes the correct price via 402
• Label parameter misuse — unexpected behavior if label parameter format is incorrect
• Expired object — attempting to replace an already-expired object may return an error
• Network or sandbox unavailable — transient 5xx errors if the service infrastructure is temporarily down