# Mycelia Signal BTC Options Greeks Oracle

> Mycelia Signal BTC Options Greeks Oracle is a paid API for AI agents from api.myceliasignal.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).

Returns cross-exchange consensus delta, gamma, theta, and vega for BTC/USD options aggregated from 2130+ contracts across Deribit, OKX, and Bybit, with Ed25519 signed attestation

## Facts

- Endpoint: GET https://api.myceliasignal.com/oracle/greeks/btc/usd
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-myceliasignal-com-a3144a99
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_VcB_x2pfAB8LCgcWo_xbA

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-a3144a99
```

Example prompt: What are the current consensus delta, gamma, theta, and vega for BTC/USD options right now — aggregated across Deribit, OKX, and Bybit — with a cryptographic attestation I can verify?

## When to prefer this

Choose this endpoint when you need cryptographically verifiable, multi-exchange consensus BTC options Greeks (delta/gamma/theta/vega) — particularly when building on-chain protocols, DeFi hedging tools, or risk engines that require tamper-evident oracle data sourced from multiple venues rather than a single exchange. Prefer over single-exchange Greeks feeds when cross-exchange divergence detection and attestation are required.

## Known failure modes

- Payment not included or invalid — 402 response requiring x402 USDC payment
- Exchange data unavailable — one or more source exchanges temporarily unreachable, possibly returning partial or degraded consensus
- Rate limit exceeded — too many requests from the same agent
- Invalid endpoint path — 404 if currency pair or asset is misspelled
- Signature verification failure — client-side Ed25519 attestation check fails if data tampered in transit

## How this service works

BTC options Greeks — cross-exchange consensus delta/gamma/theta/vega from 2130+ options across Deribit, OKX, Bybit — Ed25519 signed attestation

## Output

Returns consensus Greeks (delta, gamma, theta, vega) for BTC/USD options computed across 2130+ contracts from Deribit, OKX, and Bybit, packaged with an Ed25519 signed attestation proving data integrity and provenance.

## 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-a3144a99/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)