Invoice Preflight x402 MCP Server

by ahmet11159 Your server? Claim it

answering

Invoice Preflight x402 MCP is answering right now. Last checked 16 min ago. It exposes 3 tools.

Checks UBL invoices against purchase details and recalculates totals. $0.05 USDC per call on Base.

The linked repository no longer exists on GitHub — it was deleted or made private.

Uptime history 23 hours of history

23 hours agonow

100.0%

Uptime 24h

85 of 85 checks

Tools

read from the server

415 ms

Response time

average over 24h

open, no key

Access

streamable-http

What changed 6

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 24 September 2026. No other catalogue keeps this.

24 Sep 2 tools appeared invoice_preflight_10_pages, invoice_preflight_50_pages

24 Sep 2 tools changed the parameters they ask for invoice_preflight_10_pages, invoice_preflight_50_pages

24 Sep a tool description was rewritten invoice_preflight

24 Sep a tool changed version

This one has been quiet for a while

Quiet is not dead — but it is worth knowing when it wakes up, or when someone else takes it over. We watch the repository and tell you either way.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 16 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

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

~/Library/Application Support/Claude/claude_desktop_config.json

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

~/.codex/config.toml

[mcp_servers.invoice-preflight]
url = "https://mcp.dropenginehq.com/api/paid-mcp"

.cursor/mcp.json

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

.vscode/mcp.json

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

Available tools 3

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

invoice

invoice_preflight

Paid invoice check ($0.065 USDC on Base): UBL XML or complete PDF/image invoices up to 3 pages. Returns evidence, amount checks and match/discrepancy/needs_review. No payment or bookkeeping action is taken.

invoice_preflight_10_pages

Paid invoice OCR ($0.09 USDC on Base): process complete PDF/image invoices up to 10 pages. Oversized PDFs are rejected before OCR.

invoice_preflight_50_pages

Paid invoice OCR ($0.275 USDC on Base): process complete PDF/image invoices up to 50 pages. Oversized PDFs are rejected before OCR.

Endpoints

URL	Transport	State	Latency	Checked
https://mcp.dropenginehq.com/api/paid-mcp	streamable-http	answering	471 ms	16 min ago

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Invoice Preflight x402 MCP — questions

Answers built from our own checks of this server.

What can Invoice Preflight x402 MCP do?

It exposes 3 tools, read directly from the server on our last check. Among them: invoice_preflight, invoice_preflight_10_pages, invoice_preflight_50_pages. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Invoice Preflight x402 MCP working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 85 of 85 checks got a reply (100.0%), average response time 415 ms. The bar chart above shows every period we have measured.

Is Invoice Preflight x402 MCP still maintained?

The linked repository no longer exists on GitHub — it was deleted or made private. We show this because it changes what you can expect: an unmaintained server may keep answering for months and then stop without warning.

How do I connect Invoice Preflight x402 MCP?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Invoice Preflight x402 MCP need an API key?

No. Invoice Preflight x402 MCP completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 3 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Invoice Preflight x402 MCP?

It answers our handshake in 415 ms on average, which is faster than 39% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.