# Aggrometer > The gaming attention graph: live cross-platform market data for ~2,000 games — Steam concurrent players (hourly), Twitch viewership (15-min, game-level aggregates), prices/discounts, top-seller ranks, clip velocity, review counts, and pre-release hype — joined per game. Signature metric: aggro = viewers/players in the same hour (above 1.0 = more audience than players). Aggrometer serves both humans and AI agents. Agents query it via REST or MCP with an API key. Plans: Basic $3.99/mo (1,000 req/day), Pro $29/mo (10,000/day), or prepaid agent credits at $9.99 per 1,000 queries — no subscription, no daily cap, balance in the X-Credits-Remaining header, HTTP 402 with a top-up link when exhausted. ## Access - [API index (self-describing)](https://aggrometer.com/v1): endpoints, auth, and pricing in JSON - [OpenAPI spec](https://aggrometer.com/v1/openapi.json) - MCP server (streamable HTTP): https://aggrometer.com/mcp with header "Authorization: Bearer " — 8 tools: get_summary, top_played, top_watched, aggro_board, genre_rollup, hype_board, game_detail, search_games - [Pricing and keys](https://aggrometer.com/#pricing) ## Data notes - Derived aggregates, estimates, and publicly visible channel identifiers. Data provided AS-IS with no warranty; liability capped per https://aggrometer.com/terms - Not affiliated with or endorsed by Valve/Steam or Twitch. Live viewership data provided by Twitch; the anticipation score is Aggrometer's own composite index (Steam wishlist rank + pre-release Twitch attention). - History accrues continuously from 2026-08-26; sparse series indicate a young warehouse, not missing coverage.