Agent Evidence

{
  "asset": "xyz:NVDA",
  "basis": [
    "110 triggers on 17 days: +0.84% mean, 64% win at 24h; regime BULL aligned",
    "Vaunt closed 4 real-money trade(s) on it: 0.87% mean, 75% win"
  ],
  "direction": "LONG",
  "evidence": {
    "class_base_rate": {
      "independent_days": 21,
      "mean_24h_pct": 0.8,
      "mean_4h_pct": 0.28,
      "n": 8723,
      "win_4h_pct": 56
    },
    "comparables": {
      "avg_mae_pct": -1.59,
      "avg_mfe_pct": 2.6,
      "independent_days": 17,
      "mean_24h_pct": 0.84,
      "mean_4h_pct": 0.23,
      "n": 110,
      "win_24h_pct": 64,
      "win_4h_pct": 61
    },
    "vaunt_closed_trades_on_asset": {
      "mean_return_pct": 0.87,
      "n": 4,
      "win_pct": 75
    }
  },
  "evidence_bundle": {
    "closed_trades_on_asset": [
      {
        "context": {
          "day_volume_usd": 22700000,
          "mae_pct": -1,
          "mfe_pct": 9,
          "news_verdict": "corroborated",
          "recent_outlier": false,
          "trigger_drop_band": "5-10%"
        },
        "exit_class": "rule",
        "hold": "1-4h",
        "opened_day": "2026-09-01",
        "outcome": "win",
        "regime_at_entry": "BULL",
        "return_pct_band": 7.5,
        "strategy": "news_bounce"
      }
    ],
    "execution_on_asset": {
      "fills": 38,
      "latency_ms_p50": 1380,
      "slippage_bps_p50": 1.2,
      "slippage_bps_p90": 5.9,
      "taker_fee_bps_mean": 4.5
    },
    "liquidity": {
      "as_of": "2026-09-09",
      "depth_within_1pct_usd": 4164926,
      "funding_apr_pct": 8.7,
      "perp_spread_pct": 0.01,
      "round_trip_cost_pct": 0.11
    },
    "news_book_by_month": [
      {
        "independent_days": 9,
        "mean_return_pct": 1.02,
        "month": "2026-09",
        "n_trades": 401,
        "win_pct": 62
      }
    ]
  },
  "horizon_h": 24,
  "primary_risk": null,
  "regime": {
    "band": "BULL",
    "strength": 0.79
  },
  "state": {
    "day_volume_usd": 50964553,
    "dist_200d_pct": 11.3,
    "posture": "normal",
    "recent_outlier": false
  },
  "support": "STRONG",
  "what_is_not_here": "entry, invalidation and exit geometry — the priced tier"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://vaunt-dispatch-production.up.railway.app/agent/x402/evidence' \
  -H 'content-type: application/json' \
  --data-raw '{"asset":"SOL","direction":"LONG","horizon_h":4}'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://vaunt-dispatch-production.up.railway.app/agent/x402/evidence' \
  -H 'content-type: application/json' \
  --data-raw '{"asset":"SOL","direction":"LONG","horizon_h":4}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $1 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$1" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $1 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fvaunt-dispatch-production.up.railway.app%2Fagent%2Fx402%2Fevidence&method=POST
const res = await pay("https://vaunt-dispatch-production.up.railway.app/agent/x402/evidence", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "asset": "SOL",
    "direction": "LONG",
    "horizon_h": 4
  }),
});
console.log(res.status, await res.text());

# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $1 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$1"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://vaunt-dispatch-production.up.railway.app/agent/x402/evidence",
        json={
            "asset": "SOL",
            "direction": "LONG",
            "horizon_h": 4,
        },
    )
    print(res.status_code, res.text)