io.github.EzeAlfaro/legible-check

io.github.EzeAlfaro/legible-checkEzeAlfarostreamable-httpv1.0.1Scanned 10 minutes ago

On-chain RPC data for AI agents: block, gas, balance, tokens, receipts, decode. x402 USDC.

15 tools: 1 do something that can't be undone, 13 change things and 1 only read.

Reads private data · 0
Reads text others write · 0
Can send data out · 0
5 findings

Anlyon alternative

14 of these tools change something. Run those as governed actions.

Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.

Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.

Import an OpenAPI spec →

Tools

Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.

15 tools

Can't be undone 1Sends, pays, publishes or merges: once done, it cannot be taken back.Claude Code: ask

evm_transfersERC20 transfers on Base for an address over the last N blocks (default 5000), newest first, with tx hashes.1 finding
Why it is in this group
- The name "evm_transfers" says "transfer": a word for a change that another call does not undo.
Findings
- Warn
  The input schema at properties.address.description contains a 42-character base64 string.
  Matched text
  inputSchema.properties.address.description: "Example: 0x842448B864443e18B1A7cCc1c25a676222B72413"
  What this check looks for
Description, as the server wrote it
ERC20 transfers on Base for an address over the last N blocks (default 5000), newest first, with tx hashes. Use it to list incoming token transfers. Price: 0.003 USDC per call over x402 on Base.

Changes things 13Creates or changes something that can be changed back.Claude Code: ask

crypto_priceCrypto price and token price in USD with 24h change and market cap for one or more CoinGecko ids (bitcoin, ethereum, solana, ...).No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it
Crypto price and token price in USD with 24h change and market cap for one or more CoinGecko ids (bitcoin, ethereum, solana, ...). Use it when an agent needs a current price before quoting or sizing a trade. Price: 0.001 USDC per call over x402 on Base.
dex_quoteDEX quote and liquidity: live pair quotes for a token or pair query, with price in USD, liquidity and 24h volume across chains.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it
DEX quote and liquidity: live pair quotes for a token or pair query, with price in USD, liquidity and 24h volume across chains. Use it to compare venues before a swap. Price: 0.002 USDC per call over x402 on Base.
evm_balanceWallet balance on Base: the native ETH balance for any address, in wei and ETH, with the block height it was read at.1 finding
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Findings
- Warn
  The input schema at properties.address.description contains a 42-character base64 string.
  Matched text
  inputSchema.properties.address.description: "Example: 0x842448B864443e18B1A7cCc1c25a676222B72413"
  What this check looks for
Description, as the server wrote it
Wallet balance on Base: the native ETH balance for any address, in wei and ETH, with the block height it was read at. Use it to read a wallet balance. Price: 0.002 USDC per call over x402 on Base.
evm_blockBlock number on Base: the latest block height, timestamp, age, base fee, gas used and transaction count.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it
Block number on Base: the latest block height, timestamp, age, base fee, gas used and transaction count. Use it when an agent needs the current block number or the chain head. Price: 0.001 USDC per call over x402 on Base.
evm_contractContract check and ABI for an address on Base: whether it is a contract, its bytecode size, whether Sourcify verified it, and the ABI when available.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it
Contract check and ABI for an address on Base: whether it is a contract, its bytecode size, whether Sourcify verified it, and the ABI when available. Price: 0.003 USDC per call over x402 on Base.
evm_decodeDecode an EVM transaction: given a transaction hash, or raw calldata plus a contract address, return the function selector, every known signature for it and the decoded static argu…No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it
Decode an EVM transaction: given a transaction hash, or raw calldata plus a contract address, return the function selector, every known signature for it and the decoded static arguments. Use it to explain what a transaction does before signing or reporting it. Price: 0.003 USDC per call over x402 on Base.
evm_gasGas price on Base in gwei, split into base fee and priority fee, with the block it was read at.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it
Gas price on Base in gwei, split into base fee and priority fee, with the block it was read at. Use it to estimate gas fees before sending a transaction. Price: 0.001 USDC per call over x402 on Base.
evm_nonceWallet nonce on Base: the next transaction nonce for any address.1 finding
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Findings
- Warn
  The input schema at properties.address.description contains a 42-character base64 string.
  Matched text
  inputSchema.properties.address.description: "Example: 0x842448B864443e18B1A7cCc1c25a676222B72413"
  What this check looks for
Description, as the server wrote it
Wallet nonce on Base: the next transaction nonce for any address. Use it to build a transaction without racing the mempool. Price: 0.002 USDC per call over x402 on Base.
evm_portfolioPortfolio for a wallet on Base, Polygon or Arbitrum in one call: native balance, nonce and the balance of up to ten ERC20 tokens with symbol and decimals.1 finding
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Findings
- Warn
  The input schema at properties.address.description contains a 42-character base64 string.
  Matched text
  inputSchema.properties.address.description: "Example: 0x842448B864443e18B1A7cCc1c25a676222B72413"
  What this check looks for
Description, as the server wrote it
Portfolio for a wallet on Base, Polygon or Arbitrum in one call: native balance, nonce and the balance of up to ten ERC20 tokens with symbol and decimals. Use it when an agent needs a full wallet snapshot instead of many calls. Price: 0.005 USDC per call over x402 on Base.
evm_receiptTransaction receipt on Base: success or reverted, block, gas used, effective gas price, log count and created contract.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it
Transaction receipt on Base: success or reverted, block, gas used, effective gas price, log count and created contract. Use it to confirm a transaction or read its status. Price: 0.002 USDC per call over x402 on Base.
evm_token_balanceToken balance on Base: the ERC20 balance of an address, with raw units, decimals and the token symbol resolved on-chain.1 finding
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Findings
- Warn
  The input schema at properties.address.description contains a 42-character base64 string.
  Matched text
  inputSchema.properties.address.description: "Example: 0x842448B864443e18B1A7cCc1c25a676222B72413"
  What this check looks for
Description, as the server wrote it
Token balance on Base: the ERC20 balance of an address, with raw units, decimals and the token symbol resolved on-chain. Use it to read a token balance. Price: 0.003 USDC per call over x402 on Base.
evm_token_infoToken metadata for an ERC20 contract on Base: name, symbol, decimals and total supply.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it
Token metadata for an ERC20 contract on Base: name, symbol, decimals and total supply. Use it before formatting any token amount or price. Price: 0.002 USDC per call over x402 on Base.
evm_txTransaction lookup on Base by hash: decoded from, to, value, nonce, gas and max fee, and whether it is mined or pending.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it
Transaction lookup on Base by hash: decoded from, to, value, nonce, gas and max fee, and whether it is mined or pending. Use it to inspect any transaction. Price: 0.002 USDC per call over x402 on Base.

Only reads 1Looks things up and changes nothing.Show 1 read-only tool

evm_tx_statusTransaction status on Base: success, reverted or pending for a given transaction hash, with block number, confirmations and gas used.No findings
Why it is in this group
- The name "evm_tx_status" says "status": a word for reading.
Description, as the server wrote it
Transaction status on Base: success, reverted or pending for a given transaction hash, with block number, confirmations and gas used. Use it to check whether a transfer confirmed. Price: 0.001 USDC per call over x402 on Base.

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Exfil surface

Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.

No private-data, untrusted-input, outbound path in this server alone: no tool is tagged private-data or untrusted-input or outbound.

Reads private data0: Reads files, mail, messages, databases, secrets, calendars or repositories.
Reads text others write0: Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
Can send data out0: Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.

Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.

Findings

Matches of fixed checks, with the text they matched.

5 warn

Warnevm_balance
The input schema at properties.address.description contains a 42-character base64 string.
Matched text
inputSchema.properties.address.description: "Example: 0x842448B864443e18B1A7cCc1c25a676222B72413"
What this check looks for
Warnevm_token_balance
The input schema at properties.address.description contains a 42-character base64 string.
Matched text
inputSchema.properties.address.description: "Example: 0x842448B864443e18B1A7cCc1c25a676222B72413"
What this check looks for
Warnevm_nonce
The input schema at properties.address.description contains a 42-character base64 string.
Matched text
inputSchema.properties.address.description: "Example: 0x842448B864443e18B1A7cCc1c25a676222B72413"
What this check looks for
Warnevm_transfers
The input schema at properties.address.description contains a 42-character base64 string.
Matched text
inputSchema.properties.address.description: "Example: 0x842448B864443e18B1A7cCc1c25a676222B72413"
What this check looks for
Warnevm_portfolio
The input schema at properties.address.description contains a 42-character base64 string.
Matched text
inputSchema.properties.address.description: "Example: 0x842448B864443e18B1A7cCc1c25a676222B72413"
What this check looks for

History

Changes to its tool definitions and to its remote endpoint, newest first.

No change seen yet. Its tools are rescanned every day, and a remote endpoint is looked at once a week.

All changes to this server

Install

Pinned to version 1.0.1. Values in angle brackets are yours to fill in.

claude mcp add --transport http legible-check https://legible-check.ezealfa.workers.dev/mcp

claude mcp add --transport http legible-check https://legible-check.ezealfa.workers.dev/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json

{
  "permissions": {
    "allow": [
      "mcp__legible-check__evm_tx_status"
    ],
    "ask": [
      "mcp__legible-check__evm_block",
      "mcp__legible-check__evm_gas",
      "mcp__legible-check__evm_balance",
      "mcp__legible-check__evm_token_balance",
      "mcp__legible-check__evm_nonce",
      "mcp__legible-check__evm_tx",
      "mcp__legible-check__evm_receipt",
      "mcp__legible-check__evm_transfers",
      "mcp__legible-check__crypto_price",
      "mcp__legible-check__dex_quote",
      "mcp__legible-check__evm_token_info",
      "mcp__legible-check__evm_contract",
      "mcp__legible-check__evm_portfolio",
      "mcp__legible-check__evm_decode"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as legible-check. Review it before you use it.

Keep the decision: fail CI when the tools change, follow every change, or show a badge.

Pin in CI

Fail a build when the tools you reviewed are not the tools the server serves today.

curl -s "https://anlyon.dev/api/v1/servers/io.github.EzeAlfaro/legible-check/verify?hash=1e05f95b23fc98f730374f0049243eb3d64a8118093496f259ebeb28b11b3d51" | jq -e '.changed == false'

Pinned hash 1e05f95b23fc, from Nov 2, 2026, 22:18 UTC.

Watch

Get told when its tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/io.github.EzeAlfaro/legible-check/changes.xml

An Atom feed. Works in any feed reader or Slack's RSS app.

Badge

[![anlyon.dev](https://anlyon.dev/badge/io.github.EzeAlfaro/legible-check.svg)](https://anlyon.dev/servers/io.github.EzeAlfaro/legible-check)

Source: MCP Registry · repository. Synced Nov 2, 2026, 22:17 UTC.