Tool detail

x402 Chain Tools

Returns the latest Base Mainnet block number.

Categories: Onchain data

Use when

get the current Base block height
confirm the live Base block number before a time-sensitive read

Not for

not for other chains - Base Mainnet only
not a full block read - number only, see the block/tx tools for detail

Inputs

POST JSON body: {} (no fields)

Admitted input schema

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

Endpoint

Method: POST
URL: https://blockchain-api.x402-chain-tools.workers.dev/chain/block

Payment

Protocol: x402
Listed price: 0.001 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: POST https://blockchain-api.x402-chain-tools.workers.dev/chain/block
Retrieved: 2026-09-30T20:37:07.382Z
Catalog file SHA-256: 6837ccddf886f0007cf3727ea9d27faaa5047b51b4f425345c554ce1c271a524
Catalog built: 2026-09-30T22:31:58.034Z