# CryptoDataAPI HMM Market Regime Nowcast

> CryptoDataAPI HMM Market Regime Nowcast is a paid API for AI agents from cryptodataapi.com, paid per call via x402, $0.015/call, status unknown (last checked 2026-10-15).

Returns a Hidden Markov Model (HMM) 6-state regime classification with probabilistic forecasts for market direction, volatility, funding rates, and liquidation risk over the next 24 hours.

## Facts

- Endpoint: GET https://cryptodataapi.com/api/v1/quant/market?utm_source=zero.xyz
- Price: $0.015/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cryptodataapi-hmm-market-regime-nowcast-4e30485a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_8Ok5Ctd9dvAY3RWhWq_QB

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 cryptodataapi-hmm-market-regime-nowcast-4e30485a
```

Example prompt: What's the current HMM market regime for crypto right now — give me the 6-state classification with probabilities for directional bias, volatility, funding, and liquidation risk over the next 24 hours.

## When to prefer this

Choose this endpoint when you need a probabilistic, multi-dimensional regime classification of the current crypto market backed by a rigorous Hidden Markov Model framework — especially when you need simultaneous signals on direction, volatility, funding, and liquidation risk in a single call. Prefer this over simple momentum or sentiment indicators when making risk-aware trading or position-sizing decisions that depend on understanding what macro regime the market is in.

## Known failure modes

- Payment not provided or insufficient (x402 payment required error)
- Rate limit exceeded for the API key
- Model data staleness if upstream market data feeds are delayed
- Empty or null probabilities if the HMM model has not yet converged for the current period
- HTTP 500 if backend quant model computation fails

## How this service works

HMM regime nowcast (6 states) with directional, volatility, funding and liquidation-risk probabilities for the next 24h.

## Output

Returns a HMM-based regime classification across 6 states (e.g., trending up, trending down, ranging low-vol, ranging high-vol, stressed, transitioning), along with probability scores for directional bias, volatility regime, funding rate stress, and liquidation risk for the next 24-hour window.

## 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",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cryptodataapi-hmm-market-regime-nowcast-4e30485a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from cryptodataapi.com](https://www.zero.xyz/host/cryptodataapi.com/llms.txt)