Aether

Wallet balance on Base: the native ETH balance of any address, read live from the chain. Input: address

Host	aether-x402.vercel.app
Price	$0.001–$0.01 per call
Network	Base
Paid endpoints listed	22
Calls, last 30 days*	128
Most unique payers on one endpoint (30 days)*	3
Last paid call*	2026-10-17
Tags	base, erc20, transaction, token, wallet, balance, transfers, gas

* From the public x402 Bazaar index (snapshot 2026-10-18T04:07Z); reported by the facilitator, not measured by us.

Endpoints

URL	Method	Price
`https://aether-x402.vercel.app/v1/base/balance` Wallet balance on Base: the native ETH balance of any address, read live from the chain. Input: address	POST	$0.001
`https://aether-x402.vercel.app/v1/base/token/risk` Is this Base token safe to buy, or a honeypot, rug pull or scam? Simulates a real buy and sell to prove the token can…	POST	$0.01
`https://aether-x402.vercel.app/v1/base/tx` Base transaction lookup by hash: sender, recipient, value, function selector, block, and whether it succeeded or…	POST	$0.01
`https://aether-x402.vercel.app/v1/base/receipt` Base transaction receipt by hash: success or reverted, gas used, and the decoded ERC-20 Transfer events showing which…	POST	$0.003
`https://aether-x402.vercel.app/v1/base/gas` Current gas price on Base in gwei: base fee, suggested priority fee and max fee per gas, read live from the chain	POST	$0.01
`https://aether-x402.vercel.app/v1/base/block` Base block lookup by number or tag (latest, safe, finalized): timestamp, gas and transaction count	POST	$0.01
`https://aether-x402.vercel.app/v1/base/nft-owner` Who owns this NFT? Current owner of an ERC-721 token on Base by contract address and token id (ownerOf)	POST	$0.01
`https://aether-x402.vercel.app/v1/base/basename` Basename lookup: resolve a Base name such as jesse.base.eth to its wallet address, with avatar and profile text…	POST	$0.01
`https://aether-x402.vercel.app/v1/base/contract` What is this Base address? Wallet (EOA) or smart contract, code size, proxy implementation address, and whether it is…	POST	$0.01
`https://aether-x402.vercel.app/v1/base/call` Simulate a read-only contract call on Base (eth_call) without sending a transaction: returns the raw result or the…	POST	$0.01
`https://aether-x402.vercel.app/v1/base/transfers` Recent ERC-20 transfers on Base for a token, a wallet, or both: who sent how much to whom, across up to 2,000 recent…	POST	$0.01
`https://aether-x402.vercel.app/v1/base/token` Token info for any ERC-20 on Base by contract address: name, symbol, decimals and total supply	POST	$0.01
`https://aether-x402.vercel.app/api/x402/preflight` x402 endpoint audit: can a paying agent actually pay this API? Probes any x402 URL and validates its 402 payment…	POST	$0.01
`https://aether-x402.vercel.app/v1/base/price` Token price on Base by contract address: live USD price and pool liquidity from Uniswap v2/v3 and Aerodrome. Works for…	POST	$0.003
`https://aether-x402.vercel.app/v1/base/erc20-balance` ERC-20 token balance of a wallet on Base (USDC or any other token), formatted with symbol and decimals. Input: wallet…	POST	$0.002
`https://aether-x402.vercel.app/v1/base/allowance` ERC-20 allowance check on Base: how much a spender is still approved to move from an owner's token balance, and…	POST	$0.002
`https://aether-x402.vercel.app/v1/base/estimate-gas` Estimate the gas and the cost in ETH and USD of a Base transaction before signing it. Input: to, and optionally from,…	POST	$0.002
`https://aether-x402.vercel.app/v1/base/portfolio` Wallet portfolio value on Base: ETH plus major tokens (or up to 20 tokens you choose), each holding priced in USD from…	POST	$0.004
`https://aether-x402.vercel.app/v1/base/nft-metadata` NFT metadata on Base for an ERC-721 or ERC-1155 token: token URI plus the name, image and attributes it points to,…	POST	$0.005
`https://aether-x402.vercel.app/v1/opportunity/score` How strong is this startup or deal on paper? Scores an opportunity across seven pillars weighted by stage (pre-seed to…	POST	$0.01
`https://aether-x402.vercel.app/v1/evidence/audit` Does this write-up back up what it claims? Send up to 40,000 characters of text; get the claims that cite no evidence,…	POST	$0.01
`https://aether-x402.vercel.app/v1/invoice/triage` Which overdue invoice should be chased, and what is the next step? Send an invoice number, client reference, amount…	POST	$0.01

Source: x402 Bazaar discovery API (Coinbase CDP) · Licence: Public discovery metadata; descriptions by each provider. Listed in x402 pay-per-call APIs. We list tools; we do not test, rate or endorse them.

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