MCP server

Code402 Verify

io.github.89rat/code402-verify-mcp

Checked 25 Oct 2026, 20:29 UTC · Connected to it and listed its tools

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

At a glance

Type

MCP server

Publisher

Not verified

Status

Working at last check

Tools

18

Token cost

About 1,904 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

25 Oct 2026, 20:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

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

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

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

Gemini CLI

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

Cursor

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

VS Code

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

Antigravity

agy mcp add code402-verify-mcp https://verify.code402.dev/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"code402-verify-mcp","server_url":"https://verify.code402.dev/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"code402-verify-mcp","server_url":"https://verify.code402.dev/mcp"}

Tools

• bundle_verify ~199 tokens
  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.
• chain_balance ~79 tokens
  Paid ($0.0029). Get native ETH balance of any Ethereum address. Returns balance in wei and ETH.
• chain_block_number ~55 tokens
  Paid ($0.0029). Get the latest Ethereum mainnet block number. Returns block height and timestamp.
• chain_code ~98 tokens
  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 ~78 tokens
  Paid ($0.008). Resolve a .eth ENS name to its Ethereum address via the universal resolver.
• chain_erc20_balance ~110 tokens
  Paid ($0.0029). Get ERC-20 token balance via balanceOf. Returns balance in raw and human-readable form.
• chain_gas_price ~73 tokens
  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 ~72 tokens
  Paid ($0.0029). Get the next transaction nonce for an Ethereum address.
• chain_tx ~84 tokens
  Paid ($0.008). Get Ethereum transaction details by hash. Returns from, to, value, gas used, status, block info.
• chain_tx_receipt ~94 tokens
  Paid ($0.008). Get the receipt of a confirmed transaction. Returns status (success/fail), gas used, logs, contract address if deployment.
• iban_check ~109 tokens
  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_check ~102 tokens
  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_check ~109 tokens
  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_check ~115 tokens
  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_address_check ~112 tokens
  Paid ($0.0029). Validate an EVM address format and EIP-55 mixed-case checksum. Returns valid/invalid with normalization and checksum status.
• price_lookup ~132 tokens
  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_check ~137 tokens
  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_verify ~146 tokens
  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.

Browse

• GitHub tools
• Payments
• Legal research
• GitHub and code hosting
• Crypto and blockchains

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