ToolVet
78trust / 100

Outcomes List

by Annalist in Markets & finance

x402 APIPassing, checked 4 h ago

Every live Hyperliquid outcome (prediction) market: readable title, category (sports, price, ipo, policy_rate, awards), deadline, each side's price as implied probability with its 24h change, and 24h volume, most traded first. Filter with category and q (text search). On-chain data. Signed. Not investment advice.

GET https://api.annalist.dev/v1/outcomes/list

Last 30 days

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed

Uptime
100%
Response time
109 ms typical, 555 ms slowest 5%
Last check
4 h ago
Next check
any minute now

How to call it

GET https://api.annalist.dev/v1/outcomes/list

Each call costs $0.02 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://api.annalist.dev/v1/outcomes/list?category=sports

Parameters

ParameterTypeRequiredDescription
categorystringNo One of: sports, price, ipo, policy_rate, awards, other.
qstringNotext to find in titles, for example Fed or Anthropic

Example response

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

{
  "data": {
    "outcomes": [
      {
        "id": 8573,
        "implied_probability": 0.81,
        "title": "Anthropic first-day market cap above $1500B",
        "volume_24h_usd": 318704
      }
    ],
    "summary": {
      "markets": 327
    }
  }
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.02.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.annalist.dev/v1/outcomes/list?category=sports'

# 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://api.annalist.dev/v1/outcomes/list?category=sports' \
  | 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 $0.02 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.02" });
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 $0.02 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.annalist.dev%2Fv1%2Foutcomes%2Flist
const res = await pay("https://api.annalist.dev/v1/outcomes/list?category=sports");
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 $0.02 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.02"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://api.annalist.dev/v1/outcomes/list?category=sports")
    print(res.status_code, res.text)

Security scan

  • No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
4 h agoPassed402411 ms$0.02
7 h agoPassed402555 ms$0.02
11 h agoPassed402595 ms$0.02
15 h agoPassed40235 ms$0.02
19 h agoPassed40249 ms$0.02
23 h agoPassed402109 ms$0.02