Pricing
Per call
$0.01
Model
flat
Pay only for what you use. No subscriptions.
Inputs
minuend *
numbersubtrahend *
numberInput Parameters
Cost per run
Execution cost$0.01
About Subtract
Subtracts the second number from the first number
Frequently Asked Questions
Subtracts the second number from the first number
Subtract costs $0.01 per call on xpay. No subscription, no minimums. Pay only for the calls you make. New accounts get $5 in free credits.
Connect the Math MCP endpoint to your client — Claude Code: claude mcp add --transport http math "https://math.mcp.xpay.sh/mcp?key=YOUR_XPAY_KEY"; Cursor/Windsurf/Cline/VS Code: same URL in mcp.json. The agent will see subtract as a callable tool with the input schema and run it directly. (Unified across all providers: https://mcp.xpay.sh/mcp?key=YOUR_XPAY_KEY, then xpay_run with toolPath math/subtract.)
Yes — that's exactly what xpay is for. You don't need a Math account or API key. Sign up at xpay.tools (Google or email), get $5 free credit, and run Subtract immediately. Billing flows through your xpay balance.
Subtract accepts 2 input parameters: minuend, subtrahend. See the input schema and runnable form on this page for details and to test live.