# Mycelia Signal ETH/USD Funding Rate Oracle

> Mycelia Signal ETH/USD Funding Rate Oracle is a paid API for AI agents from api.myceliasignal.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).

Returns a cryptographically signed (Ed25519) composite ETH/USD perpetual funding rate attestation aggregated across exchanges

## Facts

- Endpoint: GET https://api.myceliasignal.com/oracle/funding/eth/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/mycelia-signal-eth-usd-funding-rate-oracle-decc0935
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WTAsU4TbqhXUcOoG7kgDS

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 mycelia-signal-eth-usd-funding-rate-oracle-decc0935
```

Example prompt: What's the current ETH/USD perpetual funding rate — I need a cryptographically signed composite from Mycelia Signal so I can verify it on-chain?

## When to prefer this

Prefer this endpoint when you need a cryptographically verifiable, multi-exchange composite ETH/USD funding rate — especially for DeFi smart contracts, risk systems, or any workflow requiring tamper-evident signed market data rather than a raw feed from a single exchange.

## Known failure modes

- Payment not included or insufficient (402 Payment Required)
- Exchange data unavailable leading to incomplete composite
- Signature verification failure on client side if public key mismatch
- Rate limiting if quota exceeded
- Network timeout if upstream exchange feeds are slow

## How this service works

Ethereum perpetual funding rate — cross-exchange aggregated funding for carry trades and sentiment — Ed25519 signed attestation

## Output

An Ed25519 signed attestation containing the composite ETH/USD perpetual funding rate aggregated across multiple exchanges, including the rate value, timestamp, and cryptographic signature for on-chain or off-chain verification.

## 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/mycelia-signal-eth-usd-funding-rate-oracle-decc0935/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)