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code402-verify-mcp

by io.github.89rat
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Server Details

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

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Status
Healthy
Uptime
100.0% over the last 24 hours
Last Tested
Transport
Streamable HTTP · MCP 2025-11-25
URL
ChatGPT
–
Claude
–

TDQS

A3.6/5.0

Scored across 18 tools

Disambiguation4/5

Each tool has a largely distinct resource+action; chain_balance vs chain_erc20_balance, chain_tx vs chain_tx_receipt, and the specific validators (iban/lei/luhn) are clearly separable. The main overlap is intentional: bundle_verify aggregates iban_check/sanctions_check/onchain_address_check, and mod97_check is a generic primitive underlying the specific validators, but descriptions make these relationships clear rather than confusable.

Naming Consistency4/5

Consistent snake_case throughout with meaningful prefixes: chain_* for read-only Ethereum calls and *_check for validators, plus verb-flavored utility names (bundle_verify, price_lookup, x402_verify). The chain_ getters omit explicit verbs (chain_balance rather than get_balance) and use two grouping conventions, but the patterns are predictable and readable.

Tool Count4/5

At 18 tools it sits slightly above the ideal band, but each entry maps to a distinct RPC call or validation routine (nine chain reads, six checksum/compliance validators, a bundle, and two free utilities). The surface is a bit wide—several single-value chain getters could theoretically be grouped—but nothing feels redundant.

Completeness4/5

The surface covers the verification/read domain well: format+checksum validation (IBAN, LEI, Luhn, Mod-97, EVM EIP-55), sanctions screening, a bundled multi-gate path, and comprehensive Ethereum read operations plus receipt verification and pricing. Minor gaps exist—no allowance or ERC-20 metadata introspection, and no general signature-verification beyond x402 receipts—but agents can work around these.

Available Tools

18 tools
bundle_verifyAInspect

Paid ($0.05–$0.25). 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.

Inputs: iban, tier, sanctions, onchain_address.

chain_balanceBInspect

Paid ($0.02). Get native ETH balance of any Ethereum address. Returns balance in wei and ETH.

Inputs: address (required).

chain_block_numberAInspect

Paid ($0.02). Get the latest Ethereum mainnet block number. Returns block height and timestamp.

Inputs: no named parameters.

chain_codeAInspect

Paid ($0.02). Get the deployed bytecode at an address. Returns hex bytecode (empty = EOA, non-empty = contract). Useful for distinguishing contracts from wallets.

Inputs: address (required).

chain_ens_resolveAInspect

Paid ($0.02). Resolve a .eth ENS name to its Ethereum address via the universal resolver.

Inputs: name (required).

chain_erc20_balanceBInspect

Paid ($0.02). Get ERC-20 token balance via balanceOf. Returns balance in raw and human-readable form.

Inputs: token (required), address (required).

chain_gas_priceAInspect

Paid ($0.02). Get the current Ethereum mainnet gas price. Returns base fee, priority fee, and max fee in wei and gwei. Useful for estimating transaction costs.

Inputs: no named parameters.

chain_nonceBInspect

Paid ($0.02). Get the next transaction nonce for an Ethereum address.

Inputs: address (required).

chain_txAInspect

Paid ($0.02). Get Ethereum transaction details by hash. Returns from, to, value, gas used, status, block info.

Inputs: hash (required).

chain_tx_receiptAInspect

Paid ($0.02). Get the receipt of a confirmed transaction. Returns status (success/fail), gas used, logs, contract address if deployment.

Inputs: hash (required).

iban_checkAInspect

Paid ($0.05). Validate an IBAN: ISO 13616 structure, country registration, length, MOD 97-10 checksum. Returns pass/fail with all checks and issues. Covers 50 countries.

Inputs: iban (required).

lei_checkBInspect

Paid ($0.05). Validate a Legal Entity Identifier (LEI, ISO 17442). Checks 20-char alphanumeric format and Mod 97-10 check character. Verified via Rust WASM engine.

Inputs: lei (required).

luhn_checkBInspect

Paid ($0.05). 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.

Inputs: number (required).

mod97_checkAInspect

Paid ($0.05). 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.

Inputs: input (required).

onchain_address_checkBInspect

Paid ($0.05). Validate an EVM address format and EIP-55 mixed-case checksum. Returns valid/invalid with normalization and checksum status.

Inputs: address (required).

price_lookupAInspect

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.

Inputs: url, tool_name.

sanctions_checkAInspect

Paid ($0.05). 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.

Inputs: names, addresses.

x402_verifyAInspect

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.

Inputs: raw_receipt (required), settlement_asset.

Tool Schema Changelog

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