PayGuard
OFAC SDN sanctions screen for crypto addresses, for agents that send payments. By Crypto Money Maker
Should I use this
Quality & Safety
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"payguard": {
"url": "https://api.youraitools.co/payguard/mcp"
}
}
}Remote endpoints
https://api.youraitools.co/payguard/mcpstreamable-httpWhat it can do
Tool inventory
Tools (2)
🟢screen_address(address)
Checks one crypto address against the US Treasury OFAC SDN list of sanctioned digital currency addresses (refreshed daily). For 2 or more addresses use screen_batch (up to 50 per call, counts as one call). Accepts any chain (BTC, ETH and EVM chains, TRX, SOL, LTC, XMR, BCH, XRP, ZEC and more). Free: 30 calls/day per IP with full results (max 10/min; invalid input is not counted); after that the tool returns an error with the x402 pay URL ($0.001 USDC on Base, Polygon, Arbitrum One or Solana per call at https://api.youraitools.co/payguard/v1/address) or prepaid credits. Returns sanctioned (true/false), match_count, matches[] (entity, entity_type, programs, list_date, listed_currency), address (normalized), chain {guess, format, candidates, checksum_valid}, list_updated_at and free_tier usage. Read-only; informational screening, not legal advice.
Input Schema
{
"type": "object",
"properties": {
"address": {
"type": "string",
"description": "One blockchain address, e.g. \"0x8589427373D6D84E98730D7795D8f6f8731FDA16\" or \"bc1qxy2kgdygjrsqtzq2n0yrf2493p83kkfjhx0wlh\": 20-140 letters/digits, optional URI prefix such as \"ethereum:\" or \"bitcoincash:\" (stripped); EVM hex and bech32 match case-insensitively, base58 exactly. The chain is detected automatically. Any chain is accepted; the SDN list covers Bitcoin, Ethereum and other EVM chains (Base, Arbitrum, BNB Chain, Polygon...), Tron, Solana, Litecoin, Monero, Bitcoin Cash/SV/Gold, Dash, Dogecoin, Ethereum Classic, XRP, Verge, Zcash and USDT/USDC addresses."
}
},
"required": [
"address"
]
}🟢screen_batch(addresses)
Checks 1-50 crypto addresses against the US Treasury OFAC SDN list in one call (counts as one call). Use it instead of repeated screen_address calls whenever you have several addresses (payee lists, counterparties, transaction inputs/outputs); use screen_address for a single one. Mixed chains allowed; one invalid entry rejects the whole call. Free: 30 calls/day per IP with full results (max 10/min; invalid input is not counted); after that the tool returns an error with the x402 pay URL ($0.01 USDC on Base, Polygon, Arbitrum One or Solana per call at https://api.youraitools.co/payguard/v1/batch) or prepaid credits. Returns count, sanctioned_count, any_sanctioned, list_updated_at and results[] in input order, each {input, address, sanctioned, match_count, matches[], chain}. Read-only; informational screening, not legal advice.
Input Schema
{
"type": "object",
"properties": {
"addresses": {
"type": "array",
"items": {
"type": "string"
},
"description": "1-50 blockchain addresses, one string per element, e.g. [\"0x8589427373D6D84E98730D7795D8f6f8731FDA16\", \"bc1qxy2kgdygjrsqtzq2n0yrf2493p83kkfjhx0wlh\"]. Each: 20-140 letters/digits, optional URI prefix such as \"ethereum:\" or \"bitcoincash:\" (stripped); EVM hex and bech32 match case-insensitively, base58 exactly. Chains may be mixed (detected per address). Any chain is accepted; the SDN list covers Bitcoin, Ethereum and other EVM chains (Base, Arbitrum, BNB Chain, Polygon...), Tron, Solana, Litecoin, Monero, Bitcoin Cash/SV/Gold, Dash, Dogecoin, Ethereum Classic, XRP, Verge, Zcash and USDT/USDC addresses. More than 50 entries or any malformed one returns a bad_request error."
}
},
"required": [
"addresses"
]
}Community
Evidence