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News To Markets

by OutcomeScout in Markets & finance

x402 APIPassing, checked 2 h ago

Turn a news headline into the matching Polymarket prediction markets to trade. One call returns the top markets ranked by relevance, each with live odds/implied probability, 24h drift, spread, on-book liquidity, volume, resolution date, and a ready bet link. Use when a trading agent reacts to breaking news and needs the tradeable market instantly. $0.01 USDC on Base.

POST
https://outcomescout.vercel.app/api/v1/news-to-markets
Price
$0.01
per call in USDC
Uptime
100%
last 30 days
Response time
397 ms
1.4 s 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

How to call it

POST https://outcomescout.vercel.app/api/v1/news-to-markets

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.

POST https://outcomescout.vercel.app/api/v1/news-to-markets
content-type: application/json

{
  "headline": "Trump pushes Russia and Ukraine toward a ceasefire"
}

Parameters

ParameterTypeRequiredDescription
headlinestringYes
min_liquidity_usdnumberNo

Example response

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

Example response, 26 lines
{
  "cost_paid": "$0.01 USDC",
  "fetched_at": "2026-06-07T12:00:00.000Z",
  "headline": "Trump pushes Russia and Ukraine toward a ceasefire",
  "request_ms": 240,
  "top_markets": [
    {
      "bet_link": "https://polymarket.com/event/russia-ukraine-ceasefire-2026",
      "collapsed_count": 0,
      "current_price": 0.34,
      "days_to_resolution": 208,
      "drift_24h_pct": 5.1,
      "event_title": "Russia x Ukraine ceasefire in 2026?",
      "market_question": "Will Russia and Ukraine agree to a ceasefire before 2027?",
      "max_safe_trade_3pct_usd": 1800,
      "outcome_type": "binary",
      "outcomes_in_event": 2,
      "primary_label": "Yes",
      "rank": 1,
      "relevance_score": 0.92,
      "size_at_best_ask_usd": 4200,
      "spread_cents": 2,
      "volume_24h": 125000
    }
  ]
}

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 -X POST 'https://outcomescout.vercel.app/api/v1/news-to-markets' \
  -H 'content-type: application/json' \
  --data-raw '{"headline":"Trump pushes Russia and Ukraine toward a ceasefire"}'

# 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://outcomescout.vercel.app/api/v1/news-to-markets' \
  -H 'content-type: application/json' \
  --data-raw '{"headline":"Trump pushes Russia and Ukraine toward a ceasefire"}' \
  | 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%2Foutcomescout.vercel.app%2Fapi%2Fv1%2Fnews-to-markets&method=POST
const res = await pay("https://outcomescout.vercel.app/api/v1/news-to-markets", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "headline": "Trump pushes Russia and Ukraine toward a ceasefire"
  }),
});
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.post(
        "https://outcomescout.vercel.app/api/v1/news-to-markets",
        json={
            "headline": "Trump pushes Russia and Ukraine toward a ceasefire",
        },
    )
    print(res.status_code, res.text)

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