corpusAI Cloud Pricing – Spot Price Events

Use this endpoint when you need granular, time-series spot price change events for a specific cloud instance type — not just current prices. It is ideal for cost trend analysis, spike detection, and AZ-level price comparison across AWS, GCP, and Azure. Prefer this over static pricing APIs when you need historical depth (back to 2014 for major clouds) or when building cost optimization workflows that respond to price changes over time.

• Missing required parameters (provider, region, instance) returns a 400 error
• Invalid provider enum value returns a 400 validation error
• Unrecognized instance type or region slug returns empty results or 404
• Time window too broad returning truncated results at row limit
• Payment failure via x402 returns 402 Payment Required
• Rate limiting or quota exceeded returns 429