# MyceliaSignal SOL/USD SVI (Solana Volatility Index)

> MyceliaSignal SOL/USD SVI (Solana Volatility Index) is a paid API for AI agents from api.myceliasignal.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-22).

Returns the Solana (SOL/USD) implied volatility surface (SVI) as an Ed25519-signed attestation

## Facts

- Endpoint: GET https://api.myceliasignal.com/oracle/svi/sol/usd?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Success rate: 0% of calls made through Zero
- Rating: 1.3 / 5 from 1 review
- Activations on Zero: 1
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-myceliasignal-com-bbce7adf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_j8EuswMw9Tz30Br2Luy18

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 api-myceliasignal-com-bbce7adf
```

Example prompt: Pull the current SOL/USD implied volatility surface with the Ed25519 signed attestation — I need the SVI data for Solana right now for options pricing.

## When to prefer this

Use this endpoint when you need a cryptographically attested, tamper-proof SOL/USD implied volatility surface for Solana options pricing, risk models, or on-chain verification. Prefer over unverified volatility feeds when auditability and data provenance matter. Part of the MyceliaSignal suite alongside BTC/ETH vol surfaces for multi-asset volatility analysis.

## Known failure modes

- Payment failure: x402 payment of $0.05 USDC not processed, returns 402 status
- Data unavailability: SOL/USD market data temporarily unavailable
- Signature verification failure: Ed25519 attestation cannot be verified
- Rate limiting or network timeout on the API endpoint
- Stale data: volatility surface not recently updated

## How this service works

Solana SVI volatility surface parameters — stochastic vol interpolation for options model calibration — Ed25519 signed attestation

## Output

Returns the Solana (SOL/USD) SVI (Stochastic Volatility Inspired) surface data, cryptographically signed with Ed25519 for tamper-proof attestation, enabling verification of data authenticity for options pricing and risk management applications.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {}
 }
}
```

## 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/api-myceliasignal-com-bbce7adf/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)