Aether: Base onchain data & token risk (x402)
https://aether-x402.vercel.app/v1/base/token/riskBase token risk (honeypot sim), prices, balances, Basenames, tx data. Pay-per-call in USDC via x402.
Paid verification
How it worksNo sponsored paid call yet.
Pay this endpoint once from your own wallet (Base USDC, up to $1.00) and we call it and record what came back. Your wallet pays the listed recipient directly; Agent Tools never holds funds. Sponsored checks prove delivery; they do not count as demand.
Quality grade
How grading works- ✓ Answers a real HTTP 402 challenge
- ✓ Publishes a /.well-known/x402 descriptor
- ✓ Payment address on record
- ✓ Settlement network declared
- ✓ Price declared
x402 readiness
Readiness is how fully this listing follows its protocol and how it behaved in our probes over 30 days. It is shown for reference and does not move it in search. Search order and leaderboards use the separate quality grade (here A, 73.5/100), which weighs availability, payability and on-chain demand. How the two differ
| Valid payment requirements | 10/10 | Payment requirements carry a payee, a mainnet network and a price. |
| Live 402 challenge | 25/25 | Paid endpoint answers with an HTTP 402 challenge (118 ms). |
| x402 version | n/a | x402 version not observed yet. |
| Signed descriptor | n/a | No x402 standard defines a signed descriptor. |
| Uptime (30 days) | 15/15 | 32/32 probes succeeded over 30 days (100%). |
| Resource declaration | 10/10 | Declares 22 paid resource(s). |
| Verified identity | 5/10 | Publisher descriptor (/.well-known/x402 or OpenAPI) on record; claim this listing to verify domain control. |
| Freshness + modern flags | 1/5 | not seen in a source for over 30 days; declares x402. |
| Security declaration | n/a | Payment is the access control for an x402 resource. |
Compared with peers
Against 10,082 reachable x402 APIs in our daily snapshot (2026-11-12 06:46 UTC). Display only; it does not change search order.
- Readiness
- Higher than 80% of peers
- This listing 88 · peer median 78
- Latency
- Faster than 80% of peers
- This listing 118 ms · peer median 205 ms
Where it loses the most points, and how to win them back
- Verified identity −5
— Claim the listing and prove control of its domain.
Now: Publisher descriptor (/.well-known/x402 or OpenAPI) on record; claim this listing to verify domain control.
- Freshness + modern flags −4
— Keep the listing current in the registry or source it comes from.
Now: not seen in a source for over 30 days; declares x402.
Paid endpoints
22 resource(s) advertised by this origin. Each price below is that resource's own x402 price; the headline price is the range across them.
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 be sold and to measure buy and sell tax, then checks mint, blacklist, pause and fee powers, proxy upgradeability, owner and DEX liquidity. Input: token address. Returns a verdict (lo
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
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 address and token address
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 live DEX prices, with the total. Input: wallet address
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 whether the approval is unlimited. Run before a swap, an approve or a revoke. Input: token, owner, spender
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 records. Input: name
https://aether-x402.vercel.app/v1/base/tx
Base transaction lookup by hash: sender, recipient, value, function selector, block, and whether it succeeded or reverted
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 tokens moved between which addresses
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 an ERC-20, ERC-721 or ERC-1155 token
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
https://aether-x402.vercel.app/v1/base/block
Base block lookup by number or tag (latest, safe, finalized): timestamp, gas and transaction count
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
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 any token with a DEX pool, including newly launched ones
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 blocks (100 results max)
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)
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, resolved from IPFS, Arweave, data URIs or https
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 revert reason. Use it to dry-run a call before signing
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, data and value
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 requirements (CAIP-2 network, USDC asset, payTo checksum, amount, EIP-712 domain, resource URL, Bazaar discovery). Returns pass, warn or fail, a 0-100 score and a fix for every failure
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 series B+), applies red flags, and returns a 0 to 10 score with pass, investigate or fail. Deterministic: the same input always gives the same score. A screening aid, not investment
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 and days overdue; get its aging category and the next action to take. Deterministic rules, no AI: the same input always gives the same answer
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, contradictions, missing evidence and documentation gaps, with fixes. Deterministic rules, no AI. Rejects text containing secrets. A documentation review, not legal or financial advi
How to call
curl -sS -i -X POST https://aether-x402.vercel.app/v1/base/token/risk # expect HTTP 402 Payment Required (about 0.001 USDC/call)
https://aether-x402.vercel.app/mcp
Listed in
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