Tool detail

usd

Returns Ethereum's current spot-futures basis and annualized carry as a signed, cross-venue arbitrage signal for basis traders.

Categories: Market prices

Use when

check the ETH spot-futures basis for a carry trade
get a cryptographically signed price-basis attestation for ETH

Not for

not a raw spot or futures price feed by itself
not for assets other than ETH/USD (fixed pair endpoint)

Inputs

GET, no parameters - fixed endpoint for the ETH/USD basis.

Admitted input schema

{
  "type": "object",
  "properties": {},
  "required": [],
  "additionalProperties": false
}

Endpoint

Method: GET
URL: https://api.myceliasignal.com/oracle/basis/eth/usd

Payment

Protocol: x402
Listed price: 0.02 USDC per call on Base
Payment method: exact
Network: eip155:8453
Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Listed terms are catalog metadata. The caller supplies inputs and calls the tool outside Onelayer. If payment is required, the caller uses a compatible wallet to pay.

Source

Directory: Coinbase x402 Bazaar
Record: GET https://api.myceliasignal.com/oracle/basis/eth/usd
Retrieved: 2026-09-30T20:37:07.382Z
Catalog file SHA-256: 6837ccddf886f0007cf3727ea9d27faaa5047b51b4f425345c554ce1c271a524
Catalog built: 2026-09-30T22:31:58.034Z