io.github.EzeAlfaroPublished by GitHub account EzeAlfarov1.0.1Updated Nov 3, 2026
On-chain RPC data for AI agents: block, gas, balance, tokens, receipts, decode. x402 USDC.
The publisher's own server: check.tattoo: tattoo size and placement guide
Legible Check's hosted MCP server (legible-check.ezealfa.workers.dev); no sign-in required; Streamable HTTP; 15 tools.
No AI overview yet: these facts come from the registry entry and the server itself.
Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.
Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.
Read https://sourceweft.com/mcp/io.github.EzeAlfaro%2Flegible-check/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.Add this to your client's mcpServers config.
{
"mcpServers": {
"legible-check": {
"type": "http",
"url": "https://legible-check.ezealfa.workers.dev/mcp"
}
}
}An MCP server and x402 seller that exposes on-chain data tools an agent can call and pay for per request in USDC on Base. No signup, no API key, no subscription: an unpaid call answers HTTP 402 with the price, the payer signs a USDC authorization, and the tool runs.
https://legible-check.ezealfa.workers.dev/mcphttps://legible-check.ezealfa.workers.dev/openapi.jsonhttps://legible-check.ezealfa.workers.dev/health0xF3D5de46f73d9f55DFce23F4AAF3Db5505c823c5 (Base)The server answers JSON-RPC 2.0 over POST /mcp, and also in text/event-stream frames when
the client sends Accept: text/event-stream.
Methods: initialize, tools/list, tools/call.
Chains: base, polygon, arbitrum (pass ?chain= on HTTP, or chain in the tool arguments).
402 with accepts[]: payTo, amount
(atomic USDC, 6 decimals), asset, network (eip155:8453).TransferWithAuthorization for that amount.PAYMENT-SIGNATURE header containing the base64 payload
{ x402Version: 2, accepted: <requirement>, payload: { type: "eip3009", signature, authorization } }.PAYMENT-RESPONSE header with the settlement transaction.Parameter names are query parameters on HTTP (?address=, ?token=, ?hash=, ?chain=).
Unsupported chains are rejected with 400 before any payment is requested.
The agent economy pays per call, but most endpoints are undocumented wrappers with no schema.
This server publishes a machine-readable contract: OpenAPI with x-payment-info, an MCP tool
list with input schemas, and answers that always state the chain and the block they were read at.
MIT
Source: README.md at commit ecdec1f
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.
chainGas 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.
chainWallet 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.
chainaddressrequiredToken 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.
tokenrequiredaddressrequiredWallet 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.
chainaddressrequiredTransaction 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.
hashrequiredTransaction 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.
hashrequiredERC20 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.
tokenblocksaddressrequiredCrypto 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.
vsidsDEX 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.
qTransaction 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.
hashrequiredToken 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.
tokenrequiredContract 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.
addressrequiredPortfolio 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.
chaintokensaddressrequiredDecode 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.
hashrequiredchain100% of the applicable checks met
How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.
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{ "mcpServers": { "legible-check": { "type": "streamable-http", "url": "https://legible-check.ezealfa.workers.dev/mcp" } }}