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Agent Preview

by vaunt-dispatch-production.up.railway.app in Other

x402 APIPassing, checked 2 h ago

Vaunt preview: STRONG/MODERATE/WEAK/AGAINST/UNKNOWN for a proposed trade (asset + LONG/SHORT) with the one-line basis, current regime band and whether Vaunt holds it now — from a live real-money Hyperliquid engine. The label only; the comparables, base rate and trade history are on the evaluate and evidence routes.

POST
https://vaunt-dispatch-production.up.railway.app/agent/x402/preview
Price
$0.001
per call in USDC
Uptime
100%
last 30 days
Response time
203 ms
297 ms slowest 5%
Last check
Passed
2 h ago, next any minute now

Run a free test callHow to call it

Reliability

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Status and outage history · Atom feed · Watch with other listings

How to call it

POST https://vaunt-dispatch-production.up.railway.app/agent/x402/preview

Each call costs $0.001 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

POST https://vaunt-dispatch-production.up.railway.app/agent/x402/preview
content-type: application/json

{
  "asset": "SOL",
  "direction": "LONG",
  "horizon_h": 4
}

Parameters

ParameterTypeRequiredDescription
assetstringYesTicker as listed on Hyperliquid, e.g. SOL, HYPE, BTC, or xyz:NVDA for tokenized equities
directionstringYes One of: LONG, SHORT.
horizon_hintegerNoEvaluation horizon in hours One of: 4, 24. Default: 4.

Example response

The provider's example. We can't check it without paying.

{
  "asset": "SOL",
  "basis": [
    "130 comparable triggers averaged -0.08% at 4h"
  ],
  "direction": "LONG",
  "horizon_h": 4,
  "primary_risk": null,
  "regime": {
    "band": "BULL"
  },
  "support": "AGAINST",
  "upgrade": "/agent/x402/evaluate ($0.50) adds the comparables, base rate, MFE/MAE and our closed trades; /agent/x402/evidence ($1.00) adds the asset's trade-by-trade history, execution cost and liquidity"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.001.

curl: see the payment challenge
# 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/preview' \
  -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/preview' \
  -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
JavaScript: pay and call
// 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 $0.001 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.001" });
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 $0.001 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fvaunt-dispatch-production.up.railway.app%2Fagent%2Fx402%2Fpreview&method=POST
const res = await pay("https://vaunt-dispatch-production.up.railway.app/agent/x402/preview", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "asset": "SOL",
    "direction": "LONG",
    "horizon_h": 4
  }),
});
console.log(res.status, await res.text());
Python: pay and call
# 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 $0.001 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.001"})
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/preview",
        json={
            "asset": "SOL",
            "direction": "LONG",
            "horizon_h": 4,
        },
    )
    print(res.status_code, res.text)

Security scan

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Recent checks

WhenResultHTTPTimePrice
2 h agoPassed402202 ms$0.001
6 h agoPassed402212 ms$0.001
9 h agoPassed402290 ms$0.001
12 h agoPassed402305 ms$0.001
15 h agoPassed402203 ms$0.001
Show 10 older checks
18 h agoPassed402216 ms$0.001
21 h agoPassed402225 ms$0.001
25 h agoPassed402209 ms$0.001
30 h agoPassed402203 ms$0.001
35 h agoPassed402254 ms$0.001
40 h agoPassed402196 ms$0.001
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3 days agoPassed402195 ms$0.001