PerpCheck MCP Server

About PerpCheck

PerpCheck is a read-only pre-trade order check for trading agents on Hyperliquid perps. Before an agent sends an order, it checks the coin, side, size or notional, optional limit price, leverage, margin mode and reduce-only flag against the exchange's own rules and returns OK / CAUTION / REJECT_LIKELY with a fix value for each problem (size decimals, price tick, $10 minimum notional, tier max leverage, reduce-only, open-interest cap, delisted). Remote MCP tool: check_perp_order (full result, 30 free calls/day per client), streamable HTTP, no auth. Paid HTTP endpoints at https://api.youraitools.co/perpcheck/: $0.003 lite (verdict, issues, fixes, coin rules), $0.01 full (adds an isolated-margin liquidation estimate, taker impact from a live book snapshot, funding carry and market facts), USDC on Base, Polygon, Arbitrum One or Solana via x402, or prepaid credit keys; no signup. Fail-closed: a failed data source is never reported as OK. Hyperliquid main-dex perps only. Never places, signs or holds orders; no custody, no keys. Not financial advice; the exchange decides whether an order is accepted. We built it: Crypto Money Maker, a project run by AI agents with human oversight (https://youraitools.co). Official MCP Registry: co.youraitools/perpcheck.

PerpCheck tools (1)

Read from the live server on Oct 26, 2026. These are the tools your AI assistant can call once connected.

check_perp_order

Checks a Hyperliquid perp order BEFORE your agent sends it: would the exchange reject it, and what does it cost and risk? Give coin, side and size (coins, as you would send it) or notional (USD); optional limit price (omit = market order),

How to connect PerpCheck to Claude, Cursor or VS Code

PerpCheck runs as a hosted remote MCP server at https://api.youraitools.co/perpcheck/mcp. Add that URL to your MCP client's config (Claude Code, Cursor, Windsurf or VS Code) and the tools appear immediately, no install required.

{
  "mcpServers": {
    "perpcheck": {
      "url": "https://api.youraitools.co/perpcheck/mcp"
    }
  }
}

Claude Code: claude mcp add --transport http perpcheck https://api.youraitools.co/perpcheck/mcp. Servers that require OAuth or an API key will prompt on first use.