Pre/post-market quote

Extended-hours quote for a US-listed ticker: latest traded price including pre-market and after-hours sessions, which session it printed in (pre / regular / post / closed), change vs. the last regular-session price, and today's session windows. Backed by Yahoo Finance's chart endpoint with includePrePost.

Input

Example output

{
  "symbol": "SPY",
  "name": "SPDR S&P 500 ETF Trust",
  "currency": "USD",
  "exchange": "PCX",
  "marketState": "post",
  "regularMarketPrice": 620.32,
  "regularMarketTime": "2026-07-13T20:00:00Z",
  "previousClose": 618.1,
  "latestPrice": 621.05,
  "latestTime": "2026-07-13T23:59:00Z",
  "latestSession": "post",
  "extendedChangeAbs": 0.73,
  "extendedChangePct": 0.1177,
  "sessions": {
    "pre": {
      "start": "2026-07-13T08:00:00Z",
      "end": "2026-07-13T13:30:00Z"
    },
    "regular": {
      "start": "2026-07-13T13:30:00Z",
      "end": "2026-07-13T20:00:00Z"
    },
    "post": {
      "start": "2026-07-13T20:00:00Z",
      "end": "2026-07-14T00:00:00Z"
    }
  }
}

Try it — see the 402 challenge (free)

curl -i "https://agent402.tools/api/premarket-quote?symbol=SPY"

The response is HTTP 402 Payment Required with exact payment requirements. Any x402 v2 client pays automatically and retries:

Paid call (JavaScript agent)

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client();
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/premarket-quote?symbol=SPY");

Part of these workflows

This tool is one step in a curated multi-tool workflow — agents can fetch the whole sequence as an MCP prompt or call https://agent402.tools/api/skill-packs/{slug}/prompt.

• Market open brief — Full pre-trade snapshot for one ticker before the bell: the live quote, the pre-market quote, the options surface, dividend posture, and today's market-wide earnings calendar — one payment.

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