SEC 8-K filing disclosure categorization. A single 8-K filing can produce multiple rows when it covers multiple disclosure types — each row represents one tagged disclosure within the filing, classified into primary, secondary, and tertiary categories with a supporting text excerpt. The full classification list is available at /stocks/taxonomies/vX/disclosures. Can't find what you're looking for? POST feedback to /feedback, no charge.
GET https://agent.massive.com/stocks/filings/8-K/vX/disclosuresListed in 2 directories: bazaar, x402-new. First seen 5 Sept 2026.
The endpoint answers an unpaid request with an HTTP 402 and a payment challenge. @x402/fetch signs it, pays in USDC, and retries — you get the result back in one call.
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";
const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const pay = wrapFetchWithPayment(fetch, account);
const res = await pay("https://agent.massive.com/stocks/filings/8-K/vX/disclosures", {
method: "GET",
});
console.log(await res.json());agent.massive.com
Get the most recent news articles relating to a stock ticker symbol, including a summary of the article and a link to the original source. Can't find what you're looking for? POST feedback to /feedback, no charge.
BaseNews & contentagent.massive.com
Get the most up-to-date market data for a single traded stock ticker. Note: Snapshot data is cleared at 3:30am EST and gets populated as data is received from the exchanges. This can happen as early as 4am EST. Can't find what you're looking for? POST feedback to /feedback, no charge.
BaseMarket data & DeFiagent.massive.com
Get aggregate bars for a stock over a given date range in custom time window sizes. For example, if timespan = ‘minute’ and multiplier = ‘5’ then 5-minute bars will be returned. Can't find what you're looking for? POST feedback to /feedback, no charge.
BaseMarket data & DeFiagent.massive.com
Get a single ticker supported by Massive. This response will have detailed information about the ticker and the company behind it. Can't find what you're looking for? POST feedback to /feedback, no charge.
BaseMarket data & DeFiagent.massive.com
Query the stock and OTC ticker symbols supported by Massive. Each result carries the ticker, company name, primary exchange, security type, CIK and OpenFIGI identifiers, and whether the asset still trades. Can't find what you're looking for? POST feedback to /feedback, no charge.
BaseMarket data & DeFiagent.massive.com
The current top 20 gainers or losers of the day, ranked by percentage price change since the previous close. Only includes tickers with volume of 10,000 or more. Can't find what you're looking for? POST feedback to /feedback, no charge.
BaseMarket data & DeFiUptime and compliance: x402-list.com (CC BY 4.0). Safety scores: x402.direct. Call and payer counts: x402.new. AMNT indexes this endpoint and does not host, operate or vouch for it.