# MyCeliaSignal BTC Multi-Exchange IV Surface

> MyCeliaSignal BTC Multi-Exchange IV Surface 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 per-strike implied volatility for BTC/USD across 3 exchanges with cross-exchange divergence detection and mispricing alerts, signed with Ed25519 attestation

## Facts

- Endpoint: GET https://api.myceliasignal.com/oracle/iv-surface/btc/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-3a22d387
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_kISC1vHjK4rOVNGzr5dTd

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-3a22d387
```

Example prompt: Pull the latest BTC/USD implied volatility surface across all 3 exchanges and flag any cross-exchange IV divergences or mispricing alerts — I want the signed attestation too so I can verify the data.

## When to prefer this

Choose this endpoint when you need a multi-exchange consensus BTC implied volatility surface with built-in divergence and mispricing detection, especially when cryptographic attestation of the data is required for trust-minimized or on-chain use cases. Prefer over single-exchange IV feeds when cross-exchange arbitrage signals or verified IV accuracy matters.

## Known failure modes

- Payment required (402) if x402 payment header is missing or insufficient
- Rate limiting if too many calls in a short window
- Stale data if exchanges are temporarily unreachable
- Invalid Ed25519 signature if data integrity is compromised
- 503 if upstream exchange feeds are unavailable

## How this service works

BTC multi-exchange IV surface — per-strike IV from 3 exchanges with cross-exchange divergence detection and mispricing alerts — Ed25519 signed attestation

## Output

Per-strike implied volatility values for BTC/USD options aggregated from 3 exchanges, cross-exchange divergence signals, mispricing alerts where IV differs significantly between venues, and an Ed25519 cryptographic signature attesting to data integrity.

## 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-3a22d387/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)