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Aether: Base onchain data & token risk (x402)

https://aether-x402.vercel.app/v1/base/token/risk
● healthy model-context-protocol-mcp

Base token risk (honeypot sim), prices, balances, Basenames, tx data. Pay-per-call in USDC via x402.

Category
model-context-protocol-mcp
Chains
base, eip155:8453
Price
$0.0010–$0.0100 USDC

Quality grade

How grading works
A 73.5 / 100
Availability 20.0 / 20
Endpoint responded (HTTP 402)
Payability 15.0 / 15
  • ✓ Answers a real HTTP 402 challenge
  • ✓ Publishes a /.well-known/x402 descriptor
  • ✓ Payment address on record
  • ✓ Settlement network declared
  • ✓ Price declared
Demand 15.3 / 35
12 distinct payers, 192 USDC transfers in the last 30 days
Performance 10.0 / 10
Last probe answered in 118 ms (full marks at 200 ms or less)
Readiness 13.2 / 15
Agent readiness 88/100
Owner verified 0.0 / 5
Nobody has claimed this listing yet
Endpoint last checked 19 h ago. On-chain activity last read 3 d ago. Availability and on-chain demand are both re-probed daily; the grade updates automatically on the next pass. This grade sets search order and leaderboards; the readiness score below is shown for reference only.

x402 readiness

B · 88/100

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.
Applicable criteria total 75 points, scaled to 100.
Responsiveness: Responsive (118 ms; bands ≤2.5 s, ≤5 s, ≤8 s, slower; penalty only).
Payment evidence: x402_challenge — We sent a request and got a live HTTP 402 challenge. Also: x402_manifest, catalog_listing. Qualifies the payment claim; adds no points.
Measured 2026-11-11.
Nine criteria, the same as the A2A readiness score, read from our daily probe of the paid endpoint, its payment requirements and 30-day probe history. Signed descriptor and security declaration are n/a for x402 (payment is the access control), as is an x402 version we have not observed; the remaining points are scaled to 100. Grades: A>=90, B>=75, C>=60, D>=40, F<40. It also feeds 15 points of the x402 quality grade.

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.

How many agent tools actually work · All statistics

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.

POST 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

POST 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 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

POST 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

POST 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

POST 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

POST 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

POST 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

POST 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

POST 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 https://aether-x402.vercel.app/v1/base/block

Base block lookup by number or tag (latest, safe, finalized): timestamp, gas and transaction count

POST 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 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

POST 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)

POST 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 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

POST 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

POST 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

POST 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

POST 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

POST 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

POST 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 · x402-fetch / x402-axios will auto-handle 402
curl -sS -i -X POST https://aether-x402.vercel.app/v1/base/token/risk  # expect HTTP 402 Payment Required (about 0.001 USDC/call)
MCP endpoint
https://aether-x402.vercel.app/mcp
/.well-known/x402.json
https://aether-x402.vercel.app/.well-known/x402

Listed in

Directories this entry was found in.

x402scan since 2026-10-02 mcp since 2026-10-08 a2a since 2026-10-08