# MyeliaSignal MSVI BTC/USD Volatility Index History

> MyeliaSignal MSVI BTC/USD Volatility Index History is a paid API for AI agents from api.myceliasignal.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).

Returns 63 days of historical MSVI volatility index data for BTC/USD with per-row cryptographic attestation, including realized volatility, implied volatility, term structure, funding, and put/call ratio components.

## Facts

- Endpoint: GET https://api.myceliasignal.com/oracle/history/index/msvi/btcusd
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/myeliasignal-msvi-btc-usd-volatility-index-history-419cd972
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_J-IKn1sXnb5Q40vY8I30x

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 myeliasignal-msvi-btc-usd-volatility-index-history-419cd972
```

Example prompt: Can you pull the last 63 days of MSVI volatility index history for BTC/USD — I need the realized vol, implied vol, term structure, funding, and PCR components, all with their per-row Ed25519 signed attestations?

## When to prefer this

Use this endpoint when you need a multi-component, cryptographically attested historical volatility dataset for BTC/USD covering ~63 days, especially when data provenance and tamper-evidence matter (e.g., for on-chain protocols, automated trading strategies, or audit trails). Prefer this over generic vol feeds when you need RV, IV, term structure, funding, and PCR bundled together with per-row signatures rather than a single scalar metric.

## Known failure modes

- Payment not included or insufficient — 402 Payment Required
- Endpoint unavailable or upstream data gap — 503 or 500 error
- Malformed request headers — 400 Bad Request
- Rate limiting if called excessively in short windows — 429 Too Many Requests

## How this service works

MSVI volatility index history — 63 days, per-row original signatures. RV, IV, term structure, funding, PCR components. — Ed25519 signed attestation

## Output

A 63-row dataset (one per day) containing the full MSVI composite volatility index for BTC/USD, broken down into realized volatility, implied volatility, term structure, funding rate, and put/call ratio sub-components. Each row carries an individual Ed25519 cryptographic signature for data integrity verification.

## 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",
     "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/myeliasignal-msvi-btc-usd-volatility-index-history-419cd972/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.myceliasignal.com](https://www.zero.xyz/host/api.myceliasignal.com/llms.txt)