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Mycelia Signal ETH/USD Spot Price Oracle
x402
Mycelia Signal ETH/USD Spot Price Oracle is a paid API for AI agents from api.myceliasignal.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).
Returns a cryptographically signed (Ed25519) attestation of the current ETH/USD spot price
Price / call$0.01
Success—
StatusUnknown
How this service works
Real-time Ethereum price in USD, aggregated from 9 exchanges including Binance, Coinbase and Kraken — Ed25519 signed attestation
Output
A JSON response containing the current ETH/USD spot price along with an Ed25519 digital signature that allows the caller to cryptographically verify the authenticity and integrity of the price data, plus a timestamp indicating when the price was recorded.
Example use cases
Smart contract price feed validation
“Pull the current ETH price in USD with a cryptographic signature so I can verify it on-chain before executing this trade logic.”
Audit trail for DeFi transactions
“Get me the signed ETH/USD spot price right now — I need to record a tamper-proof price attestation in our transaction audit log.”
Cross-exchange price verification
“Fetch the current Ethereum price in dollars with an Ed25519 signature I can independently verify to confirm it against our other price sources.”
Technical details
Endpoint
GEThttps://api.myceliasignal.com/oracle/price/eth/usdWhen to prefer
Choose this endpoint when you need a tamper-proof, cryptographically attested ETH/USD price — ideal for DeFi applications, smart contract inputs, audit trails, or any scenario where price data integrity must be independently verifiable via Ed25519 signature rather than trusted implicitly.
Side effects
- Payment not included or invalid: 402 Payment Required — must supply $0.01 USDC via x402 protocol
- Network or upstream price feed unavailable: 503 Service Unavailable
- Rate limiting exceeded: 429 Too Many Requests
- Invalid endpoint path: 404 Not Found
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
{
"domain": "ETHUSD",
"pubkey": "f4f0e52b5f7b54831f965632bf1ebf72769beda4c4e3d36a593f7729ec812615",
"canonical": "v1|PRICE|ETHUSD|2011.39|USD|2|bitfinex,bitstamp,bullish,coinbase,gemini,kraken|median|1780095944|352439",
"signature": "3898c57c949d263bb798b60ace46fa46c24d4977c8ba885cc10638ee1a97e7469f30d334d19256f883e1b90043c21c34761955808186c7871d56d6bb6fad630d",
"signingScheme": "ed25519"
}Tags
x402
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