Paid MCP tools

MCP tools can call paid APIs, datasets, or services. AllowKit is designed to give MCP clients and servers a safe way to handle these payments using scoped allowances.

import { createAllowKitMcpClient } from "@allowkit/mcp"; // roadmap — not yet shipped

const client = createAllowKitMcpClient({
  allowanceId: "alw_mcp_research",
  policy: {
    maxPerToolCallUsd: 0.10,
    maxPerDayUsd: 10,
    allowedTools: ["search", "market_data", "weather"]
  }
});

Tool-level policy fields

{
  "allowedTools": ["search", "market_data"],
  "blockedTools": ["send_email", "trade"],
  "maxPerToolCallUsd": 0.10,
  "maxToolCallsPerSession": 25,
  "requireApprovalForWriteActions": true,
  "requireApprovalForFinancialActions": true
}