Read-only Endpoints Anyone Can Hit

The live IOX feed — today’s calibrated scores, split into the validated core and the newer expansion coins.

Returns the latest daily ranking written by the scoring engine, in TWO arrays: `feed` = the ~50-coin VALIDATED core (the universe the track record and the calibration are measured on), and `expansion` = the ~18 newer alts scored on the frozen core distribution — shorter live record, NOT in the validated track. `universe_size` counts the core only; `expansion_size` counts the rest. Per coin: iox_rank — a 0–100 cross-sectional CROWDING RANK, NOT a probability — plus the SEPARATE calibrated p_beat (P outperform peers), the expected 7-day peer-relative (excess) return e_hat and its 80% conformal PREDICTION interval [lo, hi] — the band ~80% of realized 7-day outcomes land inside, NOT a confidence band around the estimate — the trailing 7-day funding read, and the latest price. Top-level also carries p_beat_definition, model_version, horizon_days and validation_status (from the in-code validation gate — currently EARLY_LIVE_VALIDATION, not yet "VALIDATED"). `iox` is a deprecated alias of `iox_rank`. Not a price prediction, not a buy/sell signal.

// Example response — a static sample, NOT today's live feed.
// Call GET /api/iox for current data; scores change daily.
{
  "as_of":             "2026-06-01",
  "rank_timestamp":    "2026-06-01",
  "horizon_days":      7,
  "universe_size":     50,          // the VALIDATED core — what "feed" holds
  "expansion_size":    18,          // newer alts — what "expansion" holds
  "model_version":     "iox-v1 · S = -z(funding_7d) · 1 factor",
  "validation_status": "EARLY_LIVE_VALIDATION",  // see /methodology — NOT yet "VALIDATED"
  "note": "iox_rank is a crowding RANK, not a probability. p_beat is the separate probability.",
  "feed": [
    {
      "asset_id":   "example-coin",
      "symbol":     "EXAMPLE",     // illustrative placeholder, not a real quote
      "name":       "Example Coin",
      "iox_rank":   86,           // 0-100 cross-sectional CROWDING RANK (NOT a probability)
      "iox":        86,           // DEPRECATED alias of iox_rank
      "rank":       7,
      "p_beat":     0.504,        // SEPARATE calibrated P(beats the peer average), 7d
      "e_hat":      0.009,        // point estimate: expected 7d peer-relative (excess) return
      "lo":        -0.080,        // 80% conformal PREDICTION interval for the REALIZED 7d
      "hi":         0.098,        //   excess return (e_hat ± qhw); ~80% of outcomes land inside
      "funding_7d": -0.00031,     // trailing 7d mean funding (per 8h)
      "price":      12.34
    }
    /* ...one row per coin in the VALIDATED core (~50) */
  ],
  "expansion": [
    /* same row shape, ~18 newer alts — scored on the frozen core
       distribution, shorter live record, NOT in the validated
       track record or the headline calibration. See /methodology. */
  ]
}

Liveness probe — is the app reachable and is the database talking back?

Returns 200 + status:"ok" when Supabase is reachable, 503 + status:"degraded" otherwise. Designed for uptime monitors. No auth, no caching.

{
  "status":    "ok",
  "checks":    { "supabase": "ok" },
  "timestamp": "2026-06-01T08:14:22.000Z",
  "version":   "0.1.0"
}