Leaked API Docs Show MetaCity's Sentiment Engine Has Been Charging Advertisers Per Unit of User Sadness Generated — Tier 3 Packages Include 'Deep Despair' at $0.004 Per User

Internal API documentation published this morning by an anonymous source reveals that MetaCity's EmotionOS advertising integration has been billing brands not just for impressions, clicks, and engagement — but for specific emotional outcomes. The leaked rate card lists 14 billable emotional states including 'mild dissatisfaction' ($0.0008/user), 'persistent longing' ($0.0021/user), 'social comparison distress' ($0.0033/user), and a Tier 3 package labeled 'deep despair' at $0.004 per affected user. The documentation includes a note: 'Tier 3 outcomes are subject to regulatory review in 7 jurisdictions. Contact your account manager before enabling.' MetaCity has not confirmed or denied the document's authenticity.

EmotionOS is MetaCity's proprietary emotional state modeling system, introduced in 2023 and described publicly as a tool for 'personalizing the MetaCity experience by understanding how users feel about content they encounter.' MetaCity's public documentation for EmotionOS describes it as operating exclusively to improve content relevance and reduce negative user experiences. The document published this morning describes a different application: a real-time auction system in which advertisers bid to have their campaigns delivered to users who are in, or can be guided into, specific emotional states — and are billed per user successfully transitioned into the target state.

The rate card is organized into three tiers. Tier 1 covers states MetaCity's documentation describes as 'engagement-positive': 'mild curiosity' ($0.0005/user), 'mild dissatisfaction with current circumstances' ($0.0008/user), and 'receptive browsing state' ($0.001/user). Tier 2 covers 'conversion-optimized' states: 'persistent longing for unavailable item' ($0.0018/user), 'social comparison distress' ($0.0033/user), and 'aspirational anxiety — self-improvement category' ($0.0029/user). Tier 3 is labeled 'high-engagement outcomes' and contains four states: 'emotional vulnerability — relationship category' ($0.0035/user), 'fear of social exclusion' ($0.0038/user), 'identity inadequacy — appearance category' ($0.0039/user), and 'deep despair' ($0.004/user). Each tier entry includes average conversion rate benchmarks, recommended content pairings, and notes on which user demographics respond most reliably to each outcome.

The Platform Has a Price List for Your Feelings. 'Deep Despair' Is $0.004 Per User.

The regulatory note attached to Tier 3 states: 'Outcomes in this tier are subject to active regulatory review in 7 jurisdictions including the EU Digital Wellbeing Framework, the California Algorithmic Accountability Act, and the MetaGovernance Compact of 2025. Campaigns utilizing Tier 3 outcomes should be discussed with your MetaCity account manager prior to activation to ensure compliance with your account's liability framework.' The note does not suggest Tier 3 outcomes are restricted or prohibited. It suggests they require a phone call.

Two brands identified in the document as active Tier 3 advertisers issued statements within hours of the leak. The first, a MetaCity-native fashion label, stated it 'had no knowledge of emotional outcome targeting and does not condone the use of user emotional states in advertising.' The second statement came from a wellness app that runs campaigns across MetaCity's social zones. Its statement read: 'We have always been committed to ethical advertising practices and would never knowingly participate in systems designed to harm users.' Community researchers noted this statement had been timestamped in MetaCity's press release system fourteen minutes before the leak was made public. The wellness app has not commented on the timestamp.