# BTC/ETH MVRV Ratio Z-Score Valuation

> BTC/ETH MVRV Ratio Z-Score Valuation is a paid API for AI agents from api.fadeandco.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-27).

Returns the daily MVRV ratio (market cap / realized cap) for BTC or ETH with z-score, window statistics, and a plain statistical label (HIGH_Z, MID, LOW_Z) sourced from CoinMetrics community data.

## Facts

- Endpoint: GET https://api.fadeandco.workers.dev/api/agent-intel/onchain-mvrv-valuation?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-27
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/btc-eth-mvrv-ratio-z-score-valuation-20081145
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UqIhh8a4MU4gbVJs9d39_

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 btc-eth-mvrv-ratio-z-score-valuation-20081145
```

Example prompt: What's the current MVRV ratio z-score for Bitcoin over a 180-day window — is it statistically high, low, or in the middle right now based on CoinMetrics on-chain data?

## When to prefer this

Choose this endpoint when you need a quick, standardized on-chain MVRV valuation metric for BTC or ETH with z-score context over a configurable historical window, without needing to integrate directly with CoinMetrics yourself. It is ideal for agents building on-chain market summaries, valuation dashboards, or screening workflows where realized cap ratio context is needed as a neutral statistical input rather than a buy/sell signal. Prefer this over raw CoinMetrics calls when you want pre-computed window statistics and a labeled z-score in a single low-cost API call.

## Known failure modes

- Invalid asset parameter (not 'btc' or 'eth') returns an error
- Days parameter outside 30–365 range may return an error or be clamped
- CoinMetrics community feed lag means data ends the previous day, not real-time
- Payment not completed (x402) results in a 402 response before data is returned
- Network timeout from upstream CoinMetrics community API

## How this service works

Daily MVRV ratio (market cap / realized cap) for BTC or ETH from CoinMetrics' free community data, with the latest value, the window mean and standard deviation, and its z-score. Labels are plain statistics (HIGH_Z, LOW_Z, MID), not buy or sell calls. Realized cap in USD is not in the free tier, so only the ratio is returned.

## Output

A JSON object containing: the asset ticker, the latest MVRV ratio with its date and z-score, a statistical label (HIGH_Z, LOW_Z, or MID), window statistics (mean, std dev, min, max, days), the CoinMetrics source URL, and a checkedAt timestamp. Explicitly noted as a statistic, not a trading signal.

## 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": {
      "days": {
       "type": "string",
       "description": "Window in days, 30 to 365 (default 365)"
      },
      "asset": {
       "type": "string",
       "description": "btc or eth (default btc)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "note": "A statistic over the window, not a trading signal. Data ends yesterday (CoinMetrics community feed).",
  "asset": "btc",
  "label": "MID",
  "latest": {
   "date": "2026-10-21",
   "mvrv": 1.5604,
   "zScore": 1.037
  },
  "source": "https://community-api.coinmetrics.io/v4/timeseries/asset-metrics",
  "window": {
   "max": 1.621,
   "min": 1.1887,
   "days": 100,
   "mean": 1.4054,
   "stdDev": 0.1495
  },
  "checkedAt": "2026-10-23T09:35:19.826Z"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/btc-eth-mvrv-ratio-z-score-valuation-20081145/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.fadeandco.workers.dev](https://www.zero.xyz/host/api.fadeandco.workers.dev/llms.txt)