Trade Gate

{
  "mode": "trade-gate",
  "paid_sats": 20,
  "payment_hash": "x402:<sha256 hex>",
  "receipt": {
    "payload": {
      "at": "<ISO 8601 time>",
      "kid": "<signing key id>",
      "mode": "trade-gate",
      "payment_hash": "x402:<sha256 hex>",
      "v": 1,
      "verdict_sha256": "<sha256 hex of the verdict>"
    },
    "signature": "<base64url Ed25519 signature>"
  },
  "verdict": {
    "allowed_risk_amount": 241,
    "binding_limit": "max_risk",
    "decision": "wait",
    "max_size": 80333.3333,
    "reasons": [
      "mandatory pause after a loss",
      "the reason shows a wish to win back a loss",
      "risk above your maximum per trade"
    ],
    "risk_amount": 450,
    "risk_pct": 1.8672,
    "rr": 2,
    "rule": "block if a hard rule fires (no stop, daily or total loss limit reached, quota, losing streak, excluded hour, day, instrument or direction, reward to risk too low); wait if a cooldown after a loss applies, revenge or fear of missing out >= 0.7, impulse >= 0.7 without a plan, or contrary news >= 0.75; reduce if the risk exceeds the allowed headroom or overconfidence >= 0.7; otherwise go. The maximum size respects the smallest remaining headroom.",
    "scores": {
      "fomo": 0.2,
      "impulse": 0.6,
      "overconfident": 0.4,
      "plan": 0.1,
      "revenge": 0.93
    },
    "wait_minutes": 30
  }
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://verdict.kechlab.com/v1/trade-gate' \
  -H 'content-type: application/json' \
  --data-raw '{"account":{"consecutive_losses":2,"day_pnl":-900,"equity":24100,"minutes_since_last_loss":4,"start_of_day_equity":25000,"trades_today":3},"order":{"entry":1.085,"side":"long","size":150000,"stop":1.082,"symbol":"EURUSD","target":1.091},"rationale":"Two stops in a row, I need to get it back before the close. Doubling size, it has to bounce here.","rules":{"cooldown_minutes_after_loss":15,"daily_loss_pct":5,"max_risk_pct":1}}'

# 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://verdict.kechlab.com/v1/trade-gate' \
  -H 'content-type: application/json' \
  --data-raw '{"account":{"consecutive_losses":2,"day_pnl":-900,"equity":24100,"minutes_since_last_loss":4,"start_of_day_equity":25000,"trades_today":3},"order":{"entry":1.085,"side":"long","size":150000,"stop":1.082,"symbol":"EURUSD","target":1.091},"rationale":"Two stops in a row, I need to get it back before the close. Doubling size, it has to bounce here.","rules":{"cooldown_minutes_after_loss":15,"daily_loss_pct":5,"max_risk_pct":1}}' \
  | 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 $0.0172 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.0172" });
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 $0.0172 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fverdict.kechlab.com%2Fv1%2Ftrade-gate&method=POST
const res = await pay("https://verdict.kechlab.com/v1/trade-gate", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "account": {
      "consecutive_losses": 2,
      "day_pnl": -900,
      "equity": 24100,
      "minutes_since_last_loss": 4,
      "start_of_day_equity": 25000,
      "trades_today": 3
    },
    "order": {
      "entry": 1.085,
      "side": "long",
      "size": 150000,
      "stop": 1.082,
      "symbol": "EURUSD",
      "target": 1.091
    },
    "rationale": "Two stops in a row, I need to get it back before the close. Doubling size, it has to bounce here.",
    "rules": {
      "cooldown_minutes_after_loss": 15,
      "daily_loss_pct": 5,
      "max_risk_pct": 1
    }
  }),
});
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 $0.0172 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.0172"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://verdict.kechlab.com/v1/trade-gate",
        json={
            "account": {
                "consecutive_losses": 2,
                "day_pnl": -900,
                "equity": 24100,
                "minutes_since_last_loss": 4,
                "start_of_day_equity": 25000,
                "trades_today": 3,
            },
            "order": {
                "entry": 1.085,
                "side": "long",
                "size": 150000,
                "stop": 1.082,
                "symbol": "EURUSD",
                "target": 1.091,
            },
            "rationale": "Two stops in a row, I need to get it back before the close. Doubling size, it has to bounce here.",
            "rules": {
                "cooldown_minutes_after_loss": 15,
                "daily_loss_pct": 5,
                "max_risk_pct": 1,
            },
        },
    )
    print(res.status_code, res.text)