Tool detail

head

Returns the current Base mainnet block height and base fee per gas in wei, read from the chain at request time.

Categories: Onchain data

Use when

get the current Base block height
check the current base fee per gas on Base

Not for

No exclusions documented.

Inputs

GET: no parameters (empty query object)

Admitted input schema

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

Endpoint

Method: GET
URL: https://canary.countersignpay.com/v1/base/head

Payment

Protocol: x402
Listed price: 0.01 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://canary.countersignpay.com/v1/base/head
Retrieved: 2026-09-30T20:37:07.382Z
Catalog file SHA-256: 6837ccddf886f0007cf3727ea9d27faaa5047b51b4f425345c554ce1c271a524
Catalog built: 2026-09-30T22:31:58.034Z