PayCheck
Score merchant domain, https URL, or 0x wallet trust before an agent pays. Does not send payments.
Connect it
Settings → Connectors → Add custom connector
URL: https://paycheck.toolweather.workers.dev/mcpSettings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://paycheck.toolweather.workers.dev/mcp{
"mcpServers": {
"paycheck": {
"url": "https://paycheck.toolweather.workers.dev/mcp",
"headers": {
"Authorization": "<YOUR_AUTHORIZATION>"
}
}
}
}claude mcp add --transport http paycheck https://paycheck.toolweather.workers.dev/mcp --header "Authorization: <value>"{
"servers": {
"paycheck": {
"type": "http",
"url": "https://paycheck.toolweather.workers.dev/mcp",
"headers": {
"Authorization": "<YOUR_AUTHORIZATION>"
}
}
}
}3 tools, verified live
check_merchantDecide whether an autonomous agent should pay a merchant, host, or wallet. PayCheck returns a deterministic trust score for one target. It does not send money, does not sign transactions, and does not hold wallet keys. Use this immediately before a payment, a checkout redirect, or a transfer to a new 0x address. Pass the payee as a bare domain (api.openai.com), an https URL, or a 0x address with
get_quotaread-onlyShow how many free PayCheck merchant checks the current caller has left for the current UTC day. Use this before a batch of check_merchant calls, or after an HTTP 402, to read the remaining free allowance and when it resets. Do not use this to score a payee. It accepts no target and it does not consume a check. Do not pay x402 for this tool. It is always free. Identity matches check_merchant. A
get_api_keyMint one free PayCheck API key. The key looks like pc_live_ followed by hex and raises the merchant-check allowance from 100 to 1,000 per UTC day. Use this once when you set up a long-running agent, then store the key and pass it on later check_merchant or get_quota calls. The plaintext key is returned only in this response. PayCheck stores a SHA-256 hash. Do not call this every turn. Do not cal
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