Aether: Base onchain data & token risk (x402) MCP Server

by francosmit94-web Your server? Claim it

answering

Aether: Base onchain data & token risk (x402) is answering right now. Last checked 1 min ago. It exposes 23 tools.

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

Uptime history 14 days of history · worst day 25%

14 days agonow

100.0%

Uptime 24h

92 of 92 checks

Tools

read from the server

258 ms

Response time

average over 24h

open, no key

Access

streamable-http

What changed 23

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 9 October 2026. No other catalogue keeps this.

12 Oct 3 tool descriptions were rewritten audit_evidence, score_opportunity, triage_invoice

9 Oct 19 tool descriptions were rewritten audit_x402_payability, base_allowance, base_balance and 16 more

9 Oct a tool appeared base_token_risk_trial

Aether: Base onchain data & token risk (x402) does not always answer

Over the last week it answered 91.4% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 1 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add aether --transport http https://aether-x402.vercel.app/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "aether": {
      "url": "https://aether-x402.vercel.app/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.aether]
url = "https://aether-x402.vercel.app/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "aether": {
      "url": "https://aether-x402.vercel.app/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "aether": {
      "url": "https://aether-x402.vercel.app/mcp"
    }
  }
}

Available tools 23

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

base

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. Price: $0.002 USDC on Base via x402.

base_balance

Wallet balance on Base: the native ETH balance of any address, read live from the chain. Input: address. Price: $0.001 USDC on Base via x402.

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. Price: $0.01 USDC on Base via x402.

base_block

Base block lookup by number or tag (latest, safe, finalized): timestamp, gas and transaction count. Price: $0.01 USDC on Base via x402.

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. Price: $0.01 USDC on Base via x402.

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. Price: $0.01 USDC on Base via x402.

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. Price: $0.002 USDC on Base via x402.

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. Price: $0.002 USDC on Base via x402.

base_gas

Current gas price on Base in gwei: base fee, suggested priority fee and max fee per gas, read live from the chain. Price: $0.01 USDC on Base via x402.

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. Price: $0.005 USDC on Base via x402.

base_nft_owner

Who owns this NFT? Current owner of an ERC-721 token on Base by contract address and token id (ownerOf). Price: $0.01 USDC on Base via x402.

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. Price: $0.004 USDC on Base via x402.

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. Price: $0.003 USDC on Base via x402.

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. Price: $0.003 USDC on Base via x402.

base_token

Token info for any ERC-20 on Base by contract address: name, symbol, decimals and total supply. Price: $0.01 USDC on Base via x402.

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 (low, caution, high, avoid), a 0-100 risk score and the evidence. Check before an agent trades a token. Try it free first: 3 calls a day at POST /v1/base/token/risk/trial. Price: $0.01 USDC on Base via x402.

base_token_risk_trial

FREE trial, no wallet or payment needed: is this Base token safe to buy, or a honeypot, rug pull or scam? The same verdict as base_token_risk (real buy and sell simulation, tax, mint, blacklist and pause powers, owner, liquidity), limited to 3 calls per caller per day. Input: token address. After the trial, use base_token_risk ($0.01 via x402)

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). Price: $0.01 USDC on Base via x402.

base_tx

Base transaction lookup by hash: sender, recipient, value, function selector, block, and whether it succeeded or reverted. Price: $0.01 USDC on Base via x402.

audit

audit_evidence

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 advice. Price: $0.01 USDC on Base via x402.

audit_x402_payability

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. Price: $0.01 USDC on Base via x402.

score

score_opportunity

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 advice. Price: $0.01 USDC on Base via x402.

triage

triage_invoice

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. Price: $0.01 USDC on Base via x402.

Endpoints

URL	Transport	State	Latency	Checked
https://aether-x402.vercel.app/mcp	streamable-http	answering	261 ms	1 min ago

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Pay-per-call tx explainer, DeFi yields, token safety, SEC 8-K and OFAC data via x402 (USDC on Base).

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Pay-per-use web extract, token prices, and wallet balances via x402 USDC micropayments.

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Aether: Base onchain data & token risk (x402) — questions

Answers built from our own checks of this server.

What can Aether: Base onchain data & token risk (x402) do?

It exposes 23 tools, read directly from the server on our last check. Among them: audit_evidence, audit_x402_payability, base_allowance, base_balance, base_basename, base_block and 17 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

What is Aether: Base onchain data & token risk (x402) mostly used for?

Its tools cluster around base and audit. That is what this server is built to work with — the grouping comes from the actual tool names, not from a category we assigned.

Is Aether: Base onchain data & token risk (x402) working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 258 ms. The bar chart above shows every period we have measured.

How do I connect Aether: Base onchain data & token risk (x402)?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Aether: Base onchain data & token risk (x402) need an API key?

No. Aether: Base onchain data & token risk (x402) completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 23 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Aether: Base onchain data & token risk (x402)?

It answers our handshake in 258 ms on average, which is faster than 50% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.