# MyeliaSignal ETH/USD Open Interest Oracle

> MyeliaSignal ETH/USD Open Interest Oracle is a paid API for AI agents from api.myceliasignal.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Returns aggregated ETH/USD open interest data across 5 exchanges as a cryptographically signed (Ed25519) attestation

## Facts

- Endpoint: GET https://api.myceliasignal.com/oracle/oi/eth/usd
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/myeliasignal-eth-usd-open-interest-oracle-aab9c2c6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UfoNU_1jzh8kyL5dO4Re-

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 myeliasignal-eth-usd-open-interest-oracle-aab9c2c6
```

Example prompt: Can you pull the current ETH/USD open interest aggregated across exchanges — I need the signed attestation so I can verify it on-chain?

## When to prefer this

Use this endpoint when you need cryptographically verifiable ETH/USD open interest data aggregated across multiple exchanges — particularly for DeFi protocols, smart contracts, or on-chain applications that require tamper-evident oracle attestations. Prefer this over single-exchange OI feeds when multi-exchange coverage and Ed25519 signed provenance are required.

## Known failure modes

- Exchange data unavailable — one or more upstream exchanges unreachable, partial or failed aggregation
- Stale data — oracle data is behind real-time due to upstream latency
- Payment failure — x402 micropayment not processed, 402 response returned
- Invalid signature — Ed25519 signature cannot be verified by consumer
- Rate limit exceeded — too many requests from the same client
- Service unavailable — oracle infrastructure down, 503 response

## How this service works

Ethereum open interest across 5 exchanges — aggregated OI with 1h/4h/24h deltas for positioning analysis — Ed25519 signed attestation

## Output

Returns a signed data payload containing the aggregated ETH/USD open interest across 5 exchanges, with an Ed25519 cryptographic attestation that allows downstream smart contracts or verifiers to confirm the data's authenticity and origin.

## 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/myeliasignal-eth-usd-open-interest-oracle-aab9c2c6/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)