Code402 Verify MCP Server

by 89rat Your server? Claim it

answering

Code402 Verify MCP is answering right now. Last checked 10 min ago. It exposes 18 tools.

Verify code402 XDR-1 receipts: keccak digest + secp256k1 signer recovery. Free, stateless.

Uptime history 16 days of history

16 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

134 ms

Response time

average over 24h

open, no key

Access

streamable-http

Nothing serious here today

Today is the operative word: we check Code402 Verify MCP every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 10 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add code402-verify-mcp --transport http https://verify.code402.dev/mcp

Settings → Connectors → Add custom connector, then paste this address

https://verify.code402.dev/mcp

~/.codex/config.toml

[mcp_servers.code402-verify-mcp]
url = "https://verify.code402.dev/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "code402-verify-mcp": {
      "url": "https://verify.code402.dev/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "code402-verify-mcp": {
      "type": "http",
      "url": "https://verify.code402.dev/mcp"
    }
  }
}

Available tools 18

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

chain

chain_balance

Paid ($0.0029). Get native ETH balance of any Ethereum address. Returns balance in wei and ETH.

chain_block_number

Paid ($0.0029). Get the latest Ethereum mainnet block number. Returns block height and timestamp.

chain_code

Paid ($0.0029). Get the deployed bytecode at an address. Returns hex bytecode (empty = EOA, non-empty = contract). Useful for distinguishing contracts from wallets.

chain_ens_resolve

Paid ($0.008). Resolve a .eth ENS name to its Ethereum address via the universal resolver.

chain_erc20_balance

Paid ($0.0029). Get ERC-20 token balance via balanceOf. Returns balance in raw and human-readable form.

chain_gas_price

Paid ($0.0029). Get the current Ethereum mainnet gas price. Returns base fee, priority fee, and max fee in wei and gwei. Useful for estimating transaction costs.

chain_nonce

Paid ($0.0029). Get the next transaction nonce for an Ethereum address.

chain_tx

Paid ($0.008). Get Ethereum transaction details by hash. Returns from, to, value, gas used, status, block info.

chain_tx_receipt

Paid ($0.008). Get the receipt of a confirmed transaction. Returns status (success/fail), gas used, logs, contract address if deployment.

bundle

bundle_verify

Paid ($0.0029–$0.50). Multi-gate compliance bundle: run any combination of IBAN validation, sanctions screening, and EVM address validation in a single call. Returns all gate results + XDR-1 signed receipt. Tier auto-detected from field count.

iban

iban_check

Paid ($0.0029). Validate an IBAN: ISO 13616 structure, country registration, length, MOD 97-10 checksum. Returns pass/fail with all checks and issues. Covers 50 countries.

lei

lei_check

Paid ($0.0029). Validate a Legal Entity Identifier (LEI, ISO 17442). Checks 20-char alphanumeric format and Mod 97-10 check character. Verified via Rust WASM engine.

luhn

luhn_check

Paid ($0.0029). Validate a payment card or account number using the Luhn algorithm (ISO/IEC 7812-1). Checks numeric format and Mod-10 checksum. Verified via Rust WASM engine.

mod97

mod97_check

Paid ($0.0029). Calculate ISO 7064 Mod 97-10 remainder for any alphanumeric string. Returns the remainder (0-96, valid=1). Used for IBAN, LEI, and custom identifier validation. Verified via Rust WASM engine.

onchain

onchain_address_check

Paid ($0.0029). Validate an EVM address format and EIP-55 mixed-case checksum. Returns valid/invalid with normalization and checksum status.

price

price_lookup

Look up pricing for any code402 tool (free). Returns current x402 pricing tiers, accepted networks, and tool availability. Use tool_name for named lookups or url for URL-based lookups.

sanctions

sanctions_check

Paid ($0.0029). Screen Ethereum addresses and entity names against OFAC/UN/EU sanctions lists. Returns clear/hit with matched entries. Supports both EVM addresses and human-readable names.

x402

x402_verify

Verify one or more XDR-1 signed receipts offline (free). Returns valid/invalid per receipt with signer recovery, declared signer comparison, and integrity digest. Supply raw_receipt as JSON string or array for batch.

Endpoints

URL	Transport	State	Latency	Checked
https://verify.code402.dev/mcp	streamable-http	answering	156 ms	10 min ago

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Code402 Verify MCP — questions

Answers built from our own checks of this server.

What can Code402 Verify MCP do?

It exposes 18 tools, read directly from the server on our last check. Among them: bundle_verify, chain_balance, chain_block_number, chain_code, chain_ens_resolve, chain_erc20_balance and 12 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 →

Is Code402 Verify MCP working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 134 ms. The bar chart above shows every period we have measured.

How do I connect Code402 Verify MCP?

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

Does Code402 Verify MCP need an API key?

No. Code402 Verify MCP completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 18 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Code402 Verify MCP?

It answers our handshake in 134 ms on average, which is faster than 86% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.