Aether
aether-x402.vercel.app · 22 paid endpoints · listed 2026-10-27
Estimate the gas and the cost in ETH and USD of a Base transaction before signing it. Input: to, and optionally from, data and value
livelast check 5 days ago
100%valid x402 answers, 72 h
$0.024USDC received on Base, 7 days
6distinct payers, 7 days
55.7score (0-100)
Paid endpoints
| Method | Endpoint | Price | Networks |
|---|---|---|---|
| POST | 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 | $0.001 | Base |
| POST | 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 whether the approval is unlimited. Run before a | $0.002 | Base |
| POST | 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 address and token address | $0.002 | Base |
| POST | 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, data and value | $0.002 | Base |
| POST | 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 any token with a DEX pool, including newl | $0.003 | Base |
| POST | 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 tokens moved between which addresses | $0.003 | Base |
| POST | 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 live DEX prices, with the total. Input: w | $0.004 | Base |
| POST | 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, resolved from IPFS, Arweave, data URIs or htt | $0.005 | Base |
| POST | 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 requirements (CAIP-2 network, USDC asset, payTo | $0.01 | Base |
| POST | 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 records. Input: name | $0.01 | Base |
| POST | aether-x402.vercel.app/v1/base/block Base block lookup by number or tag (latest, safe, finalized): timestamp, gas and transaction count | $0.01 | Base |
| POST | 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 revert reason. Use it to dry-run a call befor | $0.01 | Base |
| POST | 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 an ERC-20, ERC-721 or ERC-1155 token | $0.01 | Base |
| POST | 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 | $0.01 | Base |
| POST | 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) | $0.01 | Base |
| POST | aether-x402.vercel.app/v1/base/token Token info for any ERC-20 on Base by contract address: name, symbol, decimals and total supply | $0.01 | Base |
| POST | 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 be sold and to measure buy and sell tax, t | $0.01 | Base |
| POST | 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 blocks (100 results max) | $0.01 | Base |
| POST | aether-x402.vercel.app/v1/base/tx Base transaction lookup by hash: sender, recipient, value, function selector, block, and whether it succeeded or reverted | $0.01 | Base |
| POST | 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, contradictions, missing evidence and docu | $0.01 | Base |
| POST | 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 and days overdue; get its aging category and | $0.01 | Base |
| POST | 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 series B+), applies red flags, and return | $0.01 | Base |
Latest checks
| When | Endpoint | HTTP | ms | Result |
|---|---|---|---|---|
| 5 days ago | aether-x402.vercel.app/api/x402/preflight | 402 | 305 | valid x402 v2 terms |
Income on Base (7 days)
| Day | Transfers | USDC | |
|---|---|---|---|
| 2026-11-01 | 2 | $0.002 | |
| 2026-10-31 | 1 | $0.001 | |
| 2026-10-30 | 1 | $0.001 | |
| 2026-10-29 | 2 | $0.002 | |
| 2026-10-28 | 1 | $0.001 | |
| 2026-10-27 | 3 | $0.004 | |
| 2026-10-26 | 2 | $0.011 | |
| 2026-10-25 | 2 | $0.002 |
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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/aether-x402.vercel.app