# x402-insights Premarket Volatility & Regime Read

> x402-insights Premarket Volatility & Regime Read is a paid API for AI agents from api.goldenaspenweb.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-27).

Returns a daily premarket volatility score, regime label, expected range %, primary driver, key events, and reasoning for US index futures and 0DTE options, with up to 30 sessions of history.

## Facts

- Endpoint: POST https://api.goldenaspenweb.com/premarket?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-27
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-insights-premarket-volatility-regime-read-f35a810a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_GQyHeCDpIOo5bfk2mY9Bq

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 x402-insights-premarket-volatility-regime-read-f35a810a -d '<json body>'
```

Example prompt: What's today's premarket volatility regime and expected range for US index futures — give me the vol score, the primary driver, and any key events, pulling from the last 5 sessions of history.

## When to prefer this

Choose this endpoint when you need a structured, pre-computed daily volatility and regime assessment for US index futures or 0DTE options before market open. It is ideal for agents that need a quick, opinionated read on market conditions without running their own volatility calculations. It provides historical context (up to ~60 sessions) making it useful for trend analysis, backtesting regime transitions, or calibrating intraday strategies. Prefer it over raw market data feeds when you want a pre-interpreted signal with reasoning rather than raw prices or implied vols.

## Known failure modes

- limit parameter out of range (must be 1–30) returns a 400 error
- No data available for requested sessions if fewer than the requested number of sessions have been recorded
- Payment not processed results in 402 response blocking data delivery
- Stale or missing data if the session has not yet been published for the current day
- Malformed request (wrong method or missing required fields) returns 400 or 405

## How this service works

Daily premarket volatility & regime read for US index futures/0DTE: vol_score, regime label, expected range %, primary driver, key events, reasoning. ~60 sessions of history available.

## Output

A structured daily premarket read including: a numeric vol_score, a regime label (e.g. low/medium/high), expected range as a percentage, the primary driver of volatility, a list of key scheduled events, and a natural-language reasoning summary. Up to 30 historical sessions can be returned per request.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "limit"
     ],
     "properties": {
      "limit": {
       "type": "integer",
       "maximum": 30,
       "minimum": 1,
       "description": "sessions of history"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-insights-premarket-volatility-regime-read-f35a810a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.goldenaspenweb.com](https://www.zero.xyz/host/api.goldenaspenweb.com/llms.txt)