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MycелiaSignal ETH/USD VWAP Oracle
x402
MycелiaSignal ETH/USD VWAP Oracle is a paid API for AI agents from api.myceliasignal.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).
Returns the Volume-Weighted Average Price (VWAP) of ETH/USD as a cryptographically signed Ed25519 attestation
Price / call$0.02
Success—
StatusUnknown
How this service works
Ethereum volume-weighted average price in USD for order execution and fair value — Ed25519 signed attestation
Output
A JSON payload containing the current ETH/USD Volume-Weighted Average Price along with an Ed25519 cryptographic signature attesting to the data's authenticity, a timestamp, and the signed price data — suitable for use in smart contracts, audits, or any application requiring a verifiable price feed.
Example use cases
Smart contract liquidation price verification
“I need to check if ETH has dropped below our liquidation threshold for a DeFi protocol. Pull the latest signed ETH/USD VWAP from MycелiaSignal so I can verify the price cryptographically before executing the liquidation transaction.”
Audit trail for trading execution
“We executed a large ETH purchase order yesterday and need to prove the fair value price we used for compliance. Fetch me the signed Ed25519 attestation for ETH/USD VWAP from that timestamp so we can include it in our audit report.”
On-chain oracle update with proof
“Our smart contract needs to update its internal ETH price feed with cryptographic proof attached. Get me the current volume-weighted ETH/USD price with the Ed25519 signature so I can bundle it into the transaction data as a verifiable oracle input.”
Technical details
Endpoint
GEThttps://api.myceliasignal.com/oracle/price/eth/usd/vwapWhen to prefer
Choose this endpoint when you need a cryptographically verifiable ETH/USD price with an Ed25519 signature — ideal for DeFi applications, smart contracts, or audit trails that require tamper-proof price attestations rather than a plain unsigned price feed. Prefer over generic price APIs when cryptographic proof of data integrity is required.
Side effects
- Payment required (402) if x402 payment header is missing or invalid
- Stale or temporarily unavailable price data if upstream market feeds are disrupted
- Invalid signature if response is tampered with in transit
- Rate limiting if too many requests are made without proper payment
- Network timeout if oracle computation takes too long
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
{
"domain": "ETHUSD/VWAP",
"pubkey": "f4f0e52b5f7b54831f965632bf1ebf72769beda4c4e3d36a593f7729ec812615",
"canonical": "v1|PRICE|ETHUSD|2004.06|USD|2|bitfinex,bitstamp,coinbase,gemini,kraken|vwap|1780030100|284762",
"signature": "0848d24d15562a6d9dd4bc6ed99c6800938221685ab03bed8679b423d16623f753423f6f4191f1a2f37d5cbcebb72e7bef2692197d6e0609e60de2147783940f",
"signingScheme": "ed25519"
}Tags
x402
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