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Every trader gets one letter grade. It answers one question: should you pay attention to this wallet? Grades show up on the leaderboard, on every trader profile, and inside every whale trade object.

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The scale

GradeOne-line meaningOn the leaderboard?
SElite. Years of evidence, outsized P&L, high win rate, real volume.Yes
AStrong. Consistently profitable, well-diversified across markets.Yes
BAbove average. Solid recent track record, smaller sample.Yes
CRoughly breakeven. Not a clear signal.No
DNet losing across the sample.No
FPersistently losing. Often coin-flip or chasing resolved markets.No
The leaderboard ranks only S, A, and B. Those are the wallets worth following.

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What goes into the grade

The score is a composite (0-100) of five inputs:
  1. Realized P&L: actual profit from closed positions, not unrealized markings.
  2. Win rate: share of markets that resolved in their favor.
  3. Volume: total traded size. More volume means more signal per trade.
  4. Market count: distinct markets they have touched (diversification).
  5. Recency: penalizes wallets that have not traded in a long time.
Score thresholds assign the letter. Only B or better makes the leaderboard.

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Two real profiles, side by side

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S-grade: deep history, sustained edge

{
  "object": "trader",
  "data": {
    "id": "trd_0x863134d00841b2e200492805a01e1e2f5defaa53",
    "username": "RepTrump",
    "grade": "S",
    "score": 97.94,
    "pnl": 7532409.67,
    "win_rate": 1.0,
    "markets_traded": 28,
    "strategy_type": "swing_trader",
    "best_category": "politics"
  }
}
Very high realized P&L, near-perfect win rate, a classifiable strategy, a clear category strength.

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C-grade: noisy and small

{
  "object": "trader",
  "data": {
    "id": "trd_0xc111...",
    "username": null,
    "grade": "C",
    "score": 42.10,
    "pnl": 318.55,
    "win_rate": 0.5238,
    "markets_traded": 21,
    "strategy_type": null,
    "best_category": null
  }
}
P&L near breakeven, a coin-flip win rate, no detectable strategy. Visible in the API, but not on the leaderboard.

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Using grades in the API

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Filter whale trades by grade

Only see trades from A-grade or better: 
curl -H "Authorization: Bearer $OXINSIDER_API_KEY" \
  "https://api.0xinsider.com/api/v1/whale-trades?min_grade=A&limit=50"
min_grade accepts S, A, B. Setting min_grade=A returns S and A.

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Filter the leaderboard by strategy

Pull only S/A/B-grade swing traders: 
curl -H "Authorization: Bearer $OXINSIDER_API_KEY" \
  "https://api.0xinsider.com/api/v1/leaderboard?strategy=swing_trader"
Some traders make the leaderboard but lack a classifiable strategy. Their strategy_type is null, so treat the field as nullable when filtering client-side.

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Combine grade + category

What are A-grade or better crypto traders trading right now? (Each item carries its side in the response, so you can split buys from sells client-side.) 
curl -H "Authorization: Bearer $OXINSIDER_API_KEY" \
  "https://api.0xinsider.com/api/v1/whale-trades?min_grade=A&category=crypto&limit=50"

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A note on null strategies

A leaderboard trader without a strategy classification just means we haven’t detected a stable pattern yet. They are still a graded trader. Don’t filter them out unless you actually need a labeled strategy.