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Massive x402 API – Stock Open/Close
x402
Massive x402 API – Stock Open/Close is a paid API for AI agents from agent.massive.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).
Returns the open, close, pre-market, and after-hours prices for a given US stock ticker on a specific date, paid per request via x402 micropayment.
Price / call$0.01
Success—
StatusUnknown
How this service works
US stock market data, sold per request over x402. Every path here answers 402 with the payment terms in the PAYMENT-REQUIRED header, and answers with the data once the payment settles. No account, no API key, no subscription.
Output
Returns a JSON object containing the stock symbol, date, open price, close price, high, low, volume, pre-market price, and after-hours price for the requested ticker and date. Also includes a status field ('OK' on success).
Example use cases
Backtest entry price for a trade
“What did TSLA open and close at on March 15, 2024? I want to check the exact prices for a trade I placed that day.”
Earnings day price movement check
“What were the open and close prices for NVDA on May 22, 2024 — I want to see how much it moved on earnings day, including after-hours.”
Split-adjusted vs raw price comparison
“Give me the unadjusted open and close prices for GOOGL on June 6, 2022, the day before their 20-for-1 split.”
Technical details
Endpoint
GEThttps://agent.massive.com/v1/open-close/%7BstocksTicker%7D/%7Bdate%7DWhen to prefer
Choose this endpoint when you need daily open/close/pre-market/after-hours data for a single US equity ticker on a specific historical date, especially when you want no subscription or API key overhead — just pay $0.01 USDC per call via x402. Prefer it over subscription-based providers for ad-hoc, low-frequency lookups where per-request micropayment is acceptable.
Side effects
- Invalid or unsupported ticker symbol returns an error or empty result
- Date outside market trading days (weekends, holidays) may return no data or an error
- Malformed date format (not YYYY-MM-DD) causes a validation error
- Payment not settled or insufficient USDC balance causes a 402 response with payment terms
- Dates too far in the future or before data availability window return no data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"low": 322.3,
"from": "2023-01-09",
"high": 326.2,
"open": 324.66,
"close": 325.12,
"status": "OK",
"symbol": "AAPL",
"volume": 26122646,
"preMarket": 324.5,
"afterHours": 322.1
}
}Tags
x402
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