Analyze seller performance metrics API

Compare a supplied metric with a supplied target only when the caller also says whether higher or lower is better. No marketplace threshold is invented, and a miss is not a suspension.

The Analyze seller performance metrics operation is part of the Marketplace Account Health API on BRAINIAC.software. Compare a supplied metric with a supplied target only when the caller also says whether higher or lower is better. No marketplace threshold is invented, and a miss is not a suspension. It is exposed as POST /api/v1/marketplace-health/seller-performance-metric-analyze and priced at $0.04 USDC on Base. Payment uses the x402 exact scheme: an unpaid call returns HTTP 402 with payment requirements; after paying the exact USDC amount, retry the same request with a payment-signature header and Idempotency-Key. No account and no API key are required. Data sources for this product: Notices, metrics, and policies supplied in the request. Limitations: Records are copied only from labeled fields in the request. A notice is matched only to policy text supplied in the request. A draft does not predict an appeal result or a payout release. No seller account is accessed and no marketplace is contacted. A missing field means it was not in the supplied documents. Outputs are compliance prechecks, drafts, or data lookups for human review. They are not official determinations, legal advice, identity confirmation, or certified filings. Related operations in this group include Extract marketplace notices, Diagnose a stated payout hold, Check restriction evidence, Classify a notice against supplied policies. Open the group documentation for the full request schema, field notes, and response examples before integrating.