Analyze post performance API

Calculate engagement and an engagement rate from supplied impressions, likes, comments, shares, and saves. A missing count is left out, and no rate is calculated without impressions. Equal rates keep the caller's input order.

The Analyze post performance operation is part of the Social Media Content Intelligence API on BRAINIAC.software. Calculate engagement and an engagement rate from supplied impressions, likes, comments, shares, and saves. A missing count is left out, and no rate is calculated without impressions. Equal rates keep the caller's input order. It is exposed as POST /api/v1/social-content/post-performance-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: Posts, comments, and analytics supplied in the request. Limitations: Engagement metrics are calculated only from numbers in the request. No account is scraped and no platform restriction is bypassed. No post is published or scheduled. Hashtag figures come only from the supplied posts and hashtag rows. Draft text is shortened only for a documented limit of a specified platform. 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 Draft a content calendar, Repurpose content for a platform, Analyze supplied hashtags, Classify supplied comments. Open the group documentation for the full request schema, field notes, and response examples before integrating.