Board Diff

{
  "candidates": {
    "entered": [
      "GWW",
      "XLRE"
    ],
    "left": [],
    "unchanged": 4
  },
  "changed": true,
  "elapsed_seconds": 3960,
  "freshness": {
    "data_age_seconds": 142,
    "market_open": true,
    "next_refresh_at": "<ISO-8601 UTC — always present; do not re-buy before this>",
    "poll_hint": "Market open — this board recomputes about every 5 minutes; polling faster returns the same payload."
  },
  "names": {
    "buy_ok": [],
    "hold_band": [],
    "leadership": [],
    "light": [],
    "state": [
      {
        "from": "building",
        "sym": "MU",
        "to": "firing"
      }
    ]
  },
  "now": {
    "asof_daily": "2026-07-22",
    "at": "2026-07-22T15:11:00.000Z",
    "hash": "9af3c1d0b7e25a44"
  },
  "product": "coil-diff",
  "regime": [
    {
      "book": "spx",
      "field": "ladder_rung",
      "from": "SECTOR",
      "to": "NAMES"
    }
  ],
  "since": {
    "asof_daily": "2026-07-22",
    "at": "2026-07-22T14:05:00.000Z",
    "hash": "6d684695262bfeca"
  },
  "summary": "SPX ladder_rung SECTOR -> NAMES; 2 entered the READY pool (GWW, XLRE); 6 state changes"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://coil.trade/api/board/diff?since=the+state_hash+you+stored+from+a+previous+%2Fapi%2Fboard%2Fstate+poll'

# 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://coil.trade/api/board/diff?since=the+state_hash+you+stored+from+a+previous+%2Fapi%2Fboard%2Fstate+poll' \
  | 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 $0.01 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%2Fcoil.trade%2Fapi%2Fboard%2Fdiff
const res = await pay("https://coil.trade/api/board/diff?since=the+state_hash+you+stored+from+a+previous+%2Fapi%2Fboard%2Fstate+poll");
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 $0.01 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://coil.trade/api/board/diff?since=the+state_hash+you+stored+from+a+previous+%2Fapi%2Fboard%2Fstate+poll")
    print(res.status_code, res.text)