DropEngine Invoice Preflight MCP MCP server

This MCP server allows AI agents to perform pre-flight checks on invoices before approval or payment. It reconciles invoice fields and line items against expected purchase details, recalculates totals, and returns a structured match, discrepancy, or needs_review decision with evidence. It supports UBL XML, PDF, and image formats, using Mistral OCR for processing, and integrates with x402 payment protocols for tool usage.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-05Operated by DropEngine

MCP endpoint (Streamable HTTP)

https://mcp.dropenginehq.com/api/invoice-mcp

Vendor documentation

What you can do with it

Reconcile invoice fields against expected purchase details
Recalculate totals and receive structured match or discrepancy decisions
Check UBL XML, PDF, or image invoices before approval
Apply approval policies based on evidence-backed reconciliation results

Tools advertised by the last live check:

invoice_preflight_quote
invoice_preflight
invoice_preflight_10_pages
invoice_preflight_50_pages

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http dropengine-invoice-preflight-mcp https://mcp.dropenginehq.com/api/invoice-mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add dropengine-invoice-preflight-mcp --url https://mcp.dropenginehq.com/api/invoice-mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable dropengine-invoice-preflight-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "dropengine-invoice-preflight-mcp": {
      "url": "https://mcp.dropenginehq.com/api/invoice-mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "dropengine-invoice-preflight-mcp": {
      "type": "streamableHttp",
      "url": "https://mcp.dropenginehq.com/api/invoice-mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start dropengine-invoice-preflight-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "dropengine-invoice-preflight-mcp": {
      "type": "http",
      "url": "https://mcp.dropenginehq.com/api/invoice-mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http dropengine-invoice-preflight-mcp https://mcp.dropenginehq.com/api/invoice-mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "dropengine-invoice-preflight-mcp": {
      "url": "https://mcp.dropenginehq.com/api/invoice-mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "dropengine-invoice-preflight-mcp": {
      "serverUrl": "https://mcp.dropenginehq.com/api/invoice-mcp"
    }
  }
}

See all 128

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