# x402stock Losers — US Stock Market Daily Losers

> x402stock Losers — US Stock Market Daily Losers is a paid API for AI agents from x402stock.vercel.app, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).

Returns today's top-declining US-listed stocks with OHLC, volume, change, and percent change data

## Facts

- Endpoint: GET https://x402stock.vercel.app/api/v1/losers
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402stock-losers-us-stock-market-daily-losers-e8141176
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_C89OTDsJjVLi4dHAjAukp

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability x402stock-losers-us-stock-market-daily-losers-e8141176
```

Example prompt: Show me today's biggest stock market losers — the US-listed stocks that dropped the most by percentage today, with their OHLC prices and trading volume.

## When to prefer this

Use this endpoint when you need a ranked list of today's worst-performing US stocks by price decline or percent change — ideal for daily market briefings, momentum screening, risk monitoring, or building watchlists of declining equities. Prefer this over individual stock lookup endpoints when you want a pre-ranked losers list without filtering manually.

## Known failure modes

- Market closed / no data yet: may return empty tickers array outside trading hours
- Payment failure: x402 payment not processed, returns 402 Payment Required
- Stale data: during pre/post market hours data may reflect prior session
- Network timeout on Vercel edge: retry recommended

## How this service works

The day's biggest percentage losers across US equities, with current and previous-day OHLCV per ticker. From x402stock, a pay-per-call market & economic data API for AI agents. No API key or account; pay in USDC via x402.

## Output

A JSON object containing an array of ticker records for the day's top-declining US stocks, each including: ticker symbol, day OHLC bars (open, high, low, close), VWAP, volume, prior day OHLC bars, absolute price change, percent change, and last updated timestamp. Also includes a count, direction label ('losers'), and an as-of timestamp for the dataset.

## Example request

```json
{
 "properties": "OHLC,volume,change,percentChange"
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "as_of": "2026-05-29T20:00:00.000Z",
  "count": 1,
  "source": "massive",
  "tickers": [
   {
    "day": {
     "low": 23.06,
     "high": 26.11,
     "open": 25.94,
     "vwap": 24.3,
     "close": 23.55,
     "volume": 19121
    },
    "change": -4.2,
    "ticker": "XYZ",
    "updated": "2026-05-29T19:58:00.000Z",
    "previous_day": {
     "low": 6.91,
     "high": 7.44,
     "open": 6.97,
     "vwap": 7.17,
     "close": 7.36,
     "volume": 58578
    },
    "change_percent": -38.5
   }
  ],
  "direction": "losers"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402stock-losers-us-stock-market-daily-losers-e8141176/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402stock.vercel.app](https://www.zero.xyz/host/x402stock.vercel.app/llms.txt)