ToolVet
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Multi Outcome Normalize

by Multi-Outcome Normalize in Onchain & crypto

x402 APIPassing, checked 21 min ago

Normalize multi-outcome prices into a probability simplex. Call when turning raw multi-outcome quotes into probs that sum to 1. Returns normalized probs and sum as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. Advisory only; the caller owns capital, risk, and production controls.

POST
https://api.delx.ai/api/v1/x402/multi-outcome-normalize
Price
$0.001
per call in USDC
Uptime
100%
last 30 days
Response time
22 ms
254 ms slowest 5%
Last check
Passed
21 min ago, next in 8 min

Run a free test callHow to call it

Reliability

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Status and outage history · Atom feed

How to call it

POST https://api.delx.ai/api/v1/x402/multi-outcome-normalize

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://api.delx.ai/api/v1/x402/multi-outcome-normalize
content-type: application/json

{
  "prices": [
    0.2,
    0.3,
    0.6
  ]
}

Parameters

ParameterTypeRequiredDescription
pricesarrayYesInput field: prices.

Example response

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

{
  "n": 3,
  "prices": [
    0.2,
    0.3,
    0.6
  ],
  "probs": [
    0.18181818181818182,
    0.2727272727272727,
    0.5454545454545454
  ],
  "schema": "delx/util-multi-outcome-normalize/v1",
  "sum": 1.1
}

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://api.delx.ai/api/v1/x402/multi-outcome-normalize' \
  -H 'content-type: application/json' \
  --data-raw '{"prices":[0.2,0.3,0.6]}'

# 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://api.delx.ai/api/v1/x402/multi-outcome-normalize' \
  -H 'content-type: application/json' \
  --data-raw '{"prices":[0.2,0.3,0.6]}' \
  | 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%2Fapi.delx.ai%2Fapi%2Fv1%2Fx402%2Fmulti-outcome-normalize&method=POST
const res = await pay("https://api.delx.ai/api/v1/x402/multi-outcome-normalize", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "prices": [
      0.2,
      0.3,
      0.6
    ]
  }),
});
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://api.delx.ai/api/v1/x402/multi-outcome-normalize",
        json={
            "prices": [
                0.2,
                0.3,
                0.6,
            ],
        },
    )
    print(res.status_code, res.text)

Security scan

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Recent checks

WhenResultHTTPTimePrice
21 min agoPassed40211 ms$0.001
4 h agoPassed40214 ms$0.001
9 h agoPassed40210 ms$0.001
13 h agoPassed4028 ms$0.001
17 h agoPassed40210 ms$0.001
Show 10 older checks
22 h agoPassed40220 ms$0.001
26 h agoPassed40223 ms$0.001
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38 h agoPassed4029 ms$0.001
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2 days agoPassed4022.9 s$0.001
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2 days agoPassed402254 ms$0.001