# DripMetrics BTC Crash Premium

> DripMetrics BTC Crash Premium is a paid API for AI agents from api.dripmetrics.ai, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).

Returns BTC crash premium — the gap between Deribit 25-delta risk-reversal skew and realized downside-upside semivolatility asymmetry from DripMetrics' trade tape — as an annualized vol-point metric.

## Facts

- Endpoint: GET https://api.dripmetrics.ai/options/crash-premium
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dripmetrics-btc-crash-premium-393f88cb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_EVkX8C4sHueMx7eQ_KvmV

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 dripmetrics-btc-crash-premium-393f88cb
```

Example prompt: What's the current BTC crash premium on DripMetrics — how much extra downside vol are options pricing in vs what's actually realized over the last hour?

## When to prefer this

Use this endpoint when you need a synthesized BTC tail-risk metric that combines Deribit options market skew with realized trade-level semivolatility — particularly useful for assessing whether crash protection in options is cheap or expensive relative to actual realized downside asymmetry. Prefer this over raw implied vol endpoints when you want a single number capturing options market mispricing of crash risk.

## Known failure modes

- Insufficient trade data in the lookback window returns null for value field
- Invalid window parameter (not one of 30m, 1h, 2h, 3h) returns 400 error
- Deribit options chain unavailable causes partial or null output
- Payment failure via x402 returns 402 Payment Required
- Rate limiting or service downtime returns 503

## How this service works

DripMetricsAI (https://dripmetrics.ai/) provides on-demand BTC option-derived metrics that combine the Deribit option chain with DripMetrics' own trade-level realized calculations. Agents can pay per request via x402 and receive structured JSON metrics without subscriptions or API keys. Crash premium measures Deribit 25-delta risk-reversal skew minus the realized downside-upside semivolatility asymmetry on DripMetrics' BTC trade tape, both in annualized vol points.

## Output

A structured JSON object containing the crash premium value in annualized vol points, broken down into the Deribit 25-delta risk-reversal skew component and the realized downside-upside semivolatility asymmetry component, along with sample size details, data source metadata, and a UTC timestamp of when the metric was computed.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "window": {
       "enum": [
        "30m",
        "1h",
        "2h",
        "3h"
       ],
       "type": "string",
       "description": "Lookback window for the realized (trade tape) leg. Defaults to 30m."
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "metric",
      "pair",
      "value",
      "components",
      "sampleSize",
      "source",
      "computedAt"
     ],
     "properties": {
      "pair": {
       "type": "string",
       "const": "BTC"
      },
      "value": {
       "type": [
        "number",
        "null"
       ]
      },
      "metric": {
       "type": "string"
      },
      "source": {
       "type": "object"
      },
      "window": {
       "type": "string"
      },
      "components": {
       "type": "object"
      },
      "computedAt": {
       "type": "string",
       "format": "date-time"
      },
      "sampleSize": {
       "type": "object"
      }
     },
     "additionalProperties": false
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "pair": "BTC",
  "value": 0.0312,
  "metric": "crash-premium",
  "source": {
   "chain": "https://www.deribit.com/api/v2/public/get_book_summary_by_currency?currency=BTC&kind=option",
   "index": "https://www.deribit.com/api/v2/public/get_index_price?index_name=btc_usd",
   "trades": "DripMetrics BTC trade cache"
  },
  "window": "1h",
  "components": {
   "rr25": 0.045,
   "expiry": "2026-07-15T08:00:00.000Z",
   "forward": 108300.1,
   "dteHours": 162,
   "ivPut25Delta": 0.565,
   "realizedSkew": 0.0138,
   "ivCall25Delta": 0.52,
   "upsideSemivolAnnualized": 0.3982,
   "downsideSemivolAnnualized": 0.412
  },
  "computedAt": "2026-07-08T14:00:00.000Z",
  "sampleSize": {
   "trades": 4310,
   "intervals": 59,
   "upsideIntervals": 32,
   "downsideIntervals": 27
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/dripmetrics-btc-crash-premium-393f88cb/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.dripmetrics.ai](https://www.zero.xyz/host/api.dripmetrics.ai/llms.txt)