invoice_preflight — Invoice Preflight x402 MCP MCP Tool
invoice_preflight
(invoice preflight) is one of 3 tools on the
Invoice Preflight x402 MCP
MCP server. Connect the server and your client discovers it on the handshake.
by client
How to call invoice_preflight from your client
- Claude Code Invoice Preflight x402 MCP invoice_preflight run in your project directory
- Claude Desktop Invoice Preflight x402 MCP invoice_preflight ~/Library/Application Support/Claude/claude_desktop_config.json
- Cursor Invoice Preflight x402 MCP invoice_preflight ~/.cursor/mcp.json
- VS Code Invoice Preflight x402 MCP invoice_preflight .vscode/mcp.json
- Zed Invoice Preflight x402 MCP invoice_preflight ~/.config/zed/settings.json
- Windsurf Invoice Preflight x402 MCP invoice_preflight ~/.codeium/windsurf/mcp_config.json
- Cline Invoice Preflight x402 MCP invoice_preflight ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
- Gemini CLI Invoice Preflight x402 MCP invoice_preflight ~/.gemini/settings.json
- Grok Invoice Preflight x402 MCP invoice_preflight .mcp.json (in your project root)
- ChatGPT Invoice Preflight x402 MCP invoice_preflight Settings → Connectors → Advanced → Developer mode
- Claude.ai Invoice Preflight x402 MCP invoice_preflight Settings → Connectors → Add custom connector
- LangChain Invoice Preflight x402 MCP invoice_preflight pip install langchain-mcp-adapters
Fastest route
claude mcp add --transport http invoice-preflight https://mcp.dropenginehq.com/api/paid-mcpOther tools on this server
This list was read from the server itself, by connecting to it and calling tools/list on 24 September 2026. It is what
the server actually exposes, not what its listing claims.
Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.