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Preflight

io.github.dainidude/preflight · v0.1.0

Pay-per-call smart-contract security: scans, tx simulation, and token risk via x402 (USDC on Base).

Source code Set it up

Connect Remote server

Terminal
claude mcp add --transport http preflight https://preflight--preflight-api-mcp.modal.run/mcp
~/.cursor/mcp.json
{
  "mcpServers": {
    "preflight": {
      "url": "https://preflight--preflight-api-mcp.modal.run/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "preflight": {
      "type": "http",
      "url": "https://preflight--preflight-api-mcp.modal.run/mcp"
    }
  }
}
Claude Desktop
Settings > Connectors > Add custom connector
URL: https://preflight--preflight-api-mcp.modal.run/mcp

Tools 4 found in our last check

  • preflight_check

    Scan Solidity source and return a security verdict. This is a paid call ($0.01 USDC on Base mainnet) that flows through x402; in dev mode (DEV_MODE=1) no payment is required.

  • preflight_sim

    Simulate a transaction against a contract and return revert reason, gas used, balance deltas, and severity-scored findings. mode='quick' costs $0.05 (eth_call); mode='deep' costs $0.25 (anvil local fork with gas, balance_delta_wei, and internal_calls). Paid in USDC on Base mainn…

  • preflight_token_risk

    Check a token contract before trading it. Returns a honeypot transfer verdict, transfer tax percentage, and owner privileges as a severity-scored ScanReport. Paid call ($0.05 USDC on Base mainnet) via x402; DEV_MODE=1 skips payment.

  • preflight_pricing

    Return the Preflight service info and price list (free).

Details

Endpointhttps://preflight--preflight-api-mcp.modal.run/mcp (Streamable HTTP)
First published13 Nov 2026
Last updated13 Nov 2026
Registry nameio.github.dainidude/preflight

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