ToolVet
78trust / 100

Harness Watchlist

by CRYPTYX in Onchain & crypto

x402 APIPassing, checked 2 h ago

Near-fire setups ranked by distance-to-trigger DESC (closest to firing first). Primary monitoring surface for autonomous agents — cheap to poll at 15-30 min intervals to detect when a queued setup is about to fire. Distance in sigma; 0.2 means one metric is 0.2σ from its threshold. Cheaper than polling /api/v1/harness/evaluations when you only care about near-fires. Applicable across the CRYPTYX 200+ asset coverage universe (BTC, ETH, SOL, top-cap + long-tail); backtested scope is the 33-asset curated slice.

GET
https://cryptyx.ai/api/v1/harness/watchlist
Price
$0.01
per call in USDC
Uptime
100%
last 30 days
Response time
220 ms
389 ms slowest 5%
Last check
Passed
2 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

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

How to call it

GET https://cryptyx.ai/api/v1/harness/watchlist

Each call costs $0.01 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.

GET https://cryptyx.ai/api/v1/harness/watchlist?asof_day=&limit=0

Parameters

ParameterTypeRequiredDescription
asof_daystringNoYYYY-MM-DD. Defaults to latest evaluated day.
limitnumberNoMax results (default 10, max 50).

Example response

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

{
  "asof_day": "2026-08-21",
  "count": 5,
  "watchlist": [
    {
      "asset": "SOL",
      "confidence": 0.5,
      "distance_to_trigger": -0.18,
      "setup_id": "flow_solana_aggressive_taker_buy_spike_60d_long_t1",
      "state": "boundary",
      "z_scores": {
        "FLOW_TAKER_NET_USD": 0.68
      }
    }
  ]
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.01.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://cryptyx.ai/api/v1/harness/watchlist?asof_day=&limit=0'

# 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 - 'https://cryptyx.ai/api/v1/harness/watchlist?asof_day=&limit=0' \
  | 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 $0.01 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.01" });
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 $0.01 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fcryptyx.ai%2Fapi%2Fv1%2Fharness%2Fwatchlist
const res = await pay("https://cryptyx.ai/api/v1/harness/watchlist?asof_day=&limit=0");
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 $0.01 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.01"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://cryptyx.ai/api/v1/harness/watchlist?asof_day=&limit=0")
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

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