x402 Base Tools
base.kagurazaka.dev · 9 paid endpoints · listed 2026-10-27
Current Base gas: base fee, priority fee percentiles over the last 10 blocks, the L1 data fee of a typical transaction, and what an ETH transfer, an ERC-20 transfer, a USDC transferWithAuthorization (an x402 payment), a swap and an NFT mint cost now in ETH and USD (ETH/USD from Chainlink).
Paid endpoints
| Method | Endpoint | Price | Networks |
|---|---|---|---|
| GET | base.kagurazaka.dev/v1/address Profile of a Base address: wallet (EOA), EIP-7702 delegated wallet or contract; transaction count; ETH and USDC balances; its primary Basename; the token it is, | $0.001 | Base |
| GET | base.kagurazaka.dev/v1/authorization Whether a USDC transferWithAuthorization nonce of an authorizer has already been used on Base, which is how an x402 buyer tells a settled payment from one that | $0.001 | Base |
| GET | base.kagurazaka.dev/v1/balance The ETH balance and ERC-20 balances of an address on Base, for the tokens you name or a default list of well-known tokens (USDC, WETH, cbBTC, AERO, DAI, USDT, D | $0.001 | Base |
| GET | base.kagurazaka.dev/v1/basename Resolve a Basename (name.base.eth) to its address, or find the primary Basename of an address (only when the name points back to it). | $0.001 | Base |
| GET | base.kagurazaka.dev/v1/gas Current Base gas: base fee, priority fee percentiles over the last 10 blocks, the L1 data fee of a typical transaction, and what an ETH transfer, an ERC-20 tran | $0.001 | Base |
| GET | base.kagurazaka.dev/v1/token Name, symbol, decimals and total supply of an ERC-20 token on Base, by address or well-known symbol, with its Basescan link. | $0.001 | Base |
| GET | base.kagurazaka.dev/v1/x402-payment Check whether a Base transaction settled x402 payments (USDC transferWithAuthorization, EIP-3009): for each, the payer, the payTo address, the amount in USDC, t | $0.001 | Base |
| GET | base.kagurazaka.dev/v1/price The USD price of any ERC-20 on Base, read from its Uniswap v3 and Aerodrome pools against USDC and WETH (ETH/USD from Chainlink). The deepest pool sets the pric | $0.002 | Base |
| GET | base.kagurazaka.dev/v1/tx Everything about a Base transaction in one call: status, time, from and to, ETH value, the function called (for common selectors), the fee split into L2 executi | $0.002 | Base |
Latest checks
| When | Endpoint | HTTP | ms | Result |
|---|---|---|---|---|
| 5 days ago | base.kagurazaka.dev/v1/address | 402 | 507 | valid x402 v2 terms |
Income on Base (7 days)
This provider's payout address is shared by several providers, so its income is not shown as its own.
Is this your API?
<a href="https://logicnodes.io/observatory/p/base.kagurazaka.dev"><img src="https://logicnodes.io/observatory/badge/base.kagurazaka.dev.svg" alt="x402 status"></a>
Claim it for free with
x402_provider_claim (sign with your payout address), and get an alert within minutes when it stops answering with x402_monitor_create ($5 for 30 days). Both work over MCP (https://logicnodes.io/mcp/v2) or POST https://logicnodes.io/v1/tools/<tool>.Income is all USDC received by the provider's payout address on Base, whatever the source. Score: 0-100: 50 x share of checks in the last 72 h that returned valid x402 payment terms + 30 x min(1, log10(1 + USDC received in 7 days) / 4) + 20 x min(1, log10(1 + distinct payers in 7 days) / 3). A provider never checked scores on income only; income is all USDC received by its payout address on Base, whatever the source. JSON: /v1/observatory/providers/base.kagurazaka.dev