Accelerometer

https://x402-accelerometer-feed.fly.dev/snapshots/:id

A specific dated snapshot (YYYY-MM-DD, ids listed free at /) of the 129-series AI-progress and technology pull: frontier benchmark scores, compute trends, AGI prediction-market odds, model pricing, AI stocks, energy, space, robotics, research output. Same per-source shape as /feed (latest, previous, % change, source URL). Use it to compare dates yourself, or call /delta to get the comparison computed. No composite score. Unknown id -> 404.