Prediction Prices

{
  "context": {
    "interval": "1w",
    "outcome": "Yes",
    "outcome_index": 0,
    "question": "Will Bitcoin reach $95,000 by December 31, 2026?"
  },
  "count": 2,
  "disclaimer": "Prediction-market data, not financial advice.",
  "id": "0xacec…",
  "money_type": "real",
  "points": [
    {
      "p": 0.91,
      "t": 1783706403
    },
    {
      "p": 0.9565,
      "t": 1784310845
    }
  ],
  "summary": {
    "change": 0.0465,
    "change_pct": 5.11,
    "current_price": 0.9565,
    "end_price": 0.9565,
    "max_price": 0.9565,
    "min_price": 0.91,
    "n_points": 2,
    "start_price": 0.91,
    "trend": "up"
  }
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.agentstools.dev/prediction/prices?id=0xacec7e5b90ccb1ac4c950e3aff18156d6ce1bb7b0c87c001a281279412dca784&interval=1w'

# 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.agentstools.dev/prediction/prices?id=0xacec7e5b90ccb1ac4c950e3aff18156d6ce1bb7b0c87c001a281279412dca784&interval=1w' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// 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 $0.015 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.015" });
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 $0.015 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.agentstools.dev%2Fprediction%2Fprices
const res = await pay("https://api.agentstools.dev/prediction/prices?id=0xacec7e5b90ccb1ac4c950e3aff18156d6ce1bb7b0c87c001a281279412dca784&interval=1w");
console.log(res.status, await res.text());

# 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 $0.015 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.015"})
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.agentstools.dev/prediction/prices?id=0xacec7e5b90ccb1ac4c950e3aff18156d6ce1bb7b0c87c001a281279412dca784&interval=1w")
    print(res.status_code, res.text)