BlockSearch Entity Flow

Use this endpoint when you need directional capital flow data (inflows vs outflows) for a specific named blockchain entity such as an exchange, protocol, or wallet cluster, especially when you want to filter by one or more chains. Prefer over raw transfer endpoints when you need aggregated flow summaries rather than individual transaction lists.

• Entity not found or unrecognized — returns empty result or error
• Invalid chain filter value — returns validation error
• Insufficient payment or x402 payment failure — returns 402 Payment Required
• Rate limiting or service unavailability — returns 5xx error
• Missing required entity parameter — returns 400 Bad Request