# MycealiaSignal Brent Crude Oil Oracle (Ed25519 Signed)

> MycealiaSignal Brent Crude Oil Oracle (Ed25519 Signed) is a paid API for AI agents from api.myceliasignal.com, paid per call via x402, $1/call, status unknown (last checked 2026-09-13).

Returns a cryptographically signed (Ed25519) attestation of the current Brent Crude Oil price

## Facts

- Endpoint: GET https://api.myceliasignal.com/oracle/econ/commodities/brent
- Price: $1/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-f0807682
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ZfTwMjYaW7c-6SvAix3Gp

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-f0807682
```

Example prompt: What's the current Brent crude oil price? I need a cryptographically signed attestation I can verify — get me the MycealiaSignal oracle reading.

## When to prefer this

Choose this endpoint when you need a cryptographically verifiable Brent Crude Oil price — particularly for smart contract inputs, audit trails, or any workflow requiring proof of data authenticity via Ed25519 signature. Prefer over unsigned price feeds when tamper-evidence is required.

## Known failure modes

- Payment failure: 402 if USDC payment not provided or insufficient
- Price feed unavailable: upstream data source outage may cause 503 or stale data
- Invalid signature: attestation key rotation could cause verification failures on consumer side
- Network timeout: real-time oracle latency spike

## How this service works

Brent crude oil spot price — international benchmark for global energy markets and macro hedging — Ed25519 signed attestation

## Output

Returns the current Brent Crude Oil price as an Ed25519-signed attestation object, allowing the caller to cryptographically verify the authenticity and integrity of the price data. Includes the price value and a digital signature tied to MycealiaSignal's oracle key.

## 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-f0807682/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)