# Mycelial Signal ETH/USD Options Greeks Oracle

> Mycelial Signal ETH/USD 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 2026-09-14).

Returns consensus ETH/USD options Greeks aggregated across 1822+ options on 3 exchanges, with Ed25519-signed attestation

## Facts

- Endpoint: GET https://api.myceliasignal.com/oracle/greeks/eth/usd
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-myceliasignal-com-f8fb69c6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Jf60vWGD6HwpXWebieQsJ

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-f8fb69c6
```

Example prompt: Can you pull the current ETH/USD options Greeks consensus — delta, gamma, theta, vega — aggregated across all three exchanges with a cryptographic attestation I can verify?

## When to prefer this

Use this endpoint when you need trustworthy, multi-exchange consensus ETH options Greeks with cryptographic attestation — ideal for on-chain protocols, smart contract oracles, or any system that needs verifiable risk metrics rather than a single-source feed. Prefer over single-exchange APIs when cross-exchange divergence detection and tamper-evident data provenance matter.

## Known failure modes

- Exchange data unavailable — one or more underlying exchanges unreachable, partial consensus returned or error
- Payment not received — 402 response if x402 micropayment not included
- Rate limiting — too many requests in short period
- Stale data — Greeks may lag if exchange feeds are delayed
- Signature verification failure — Ed25519 attestation invalid if data tampered

## How this service works

ETH options Greeks — cross-exchange consensus from 1822+ options across 3 exchanges — Ed25519 signed attestation

## Output

A signed payload containing consensus options Greeks (delta, gamma, theta, vega, rho) for ETH/USD, aggregated from 1822+ options contracts across 3 exchanges, with an Ed25519 digital signature for cryptographic attestation and provenance 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/api-myceliasignal-com-f8fb69c6/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)