# MyCeliaSignal ETH/USD IV Surface with Divergence Detection

> MyCeliaSignal ETH/USD IV Surface with Divergence Detection is a paid API for AI agents from api.myceliasignal.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).

Returns a multi-exchange implied volatility surface for ETH/USD options with per-strike IV, cross-exchange divergence detection, and mispricing alerts, delivered as an Ed25519-signed attestation.

## Facts

- Endpoint: GET https://api.myceliasignal.com/oracle/iv-surface/eth/usd
- 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/api-myceliasignal-com-0fb595d1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TK5Xhy5q59HBetXzfQHxg

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-0fb595d1
```

Example prompt: Pull me the current ETH/USD implied volatility surface across all exchanges, and flag any strikes where IV is diverging significantly between venues — I need the Ed25519-signed attestation included.

## When to prefer this

Choose this endpoint when you need a cryptographically attested, multi-exchange ETH implied volatility surface with built-in divergence and mispricing detection — particularly useful for on-chain oracle integrations, options market-making, arbitrage signal generation, or any use case requiring verifiable IV data across venues rather than a single-exchange snapshot.

## Known failure modes

- Exchange data unavailable — one or more source exchanges may be down or rate-limiting
- Insufficient options data — not enough strikes or expiries to construct a full surface
- Payment not fulfilled — x402 payment of $0.05 USDC required before data is returned
- Signature verification failure — Ed25519 attestation cannot be generated if upstream data is incomplete
- Stale data — if real-time feeds are delayed, surface may not reflect current market conditions

## How this service works

ETH multi-exchange IV surface with divergence detection — Ed25519 signed attestation

## Output

A structured implied volatility surface for ETH/USD, including per-strike IV values aggregated from multiple exchanges, cross-exchange divergence scores, mispricing alerts where IV discrepancies are detected, and an Ed25519 cryptographic signature attesting to the data integrity and origin.

## 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-0fb595d1/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)