MCP server

E-invoice validator & repair check (XRechnung, Peppol BIS 3, EN 16931)

io.github.nyo-agentti/einvoice-validator

Checked 25 Oct 2026, 20:29 UTC · Connected to it and listed its tools

Validate XRechnung, Peppol BIS 3 and EN 16931 invoices with KoSIT; explain rules; check auto-repair

Working at last checkAbout 263 tokens per request once connected2 tools

Website

https://einvoice-validator-k2qw.onrender.com/mcp

At a glance

Type: MCP server
Publisher: Not verified
Status: Working at last check
Tools: 2
Token cost: About 263 tokens per request
Sets up in: Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
Last checked: 25 Oct 2026, 20:29 UTC

Connect it to your agent

Add to Cursor Add to VS Code VS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http einvoice-validator https://einvoice-validator-k2qw.onrender.com/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.einvoice-validator]
url = "https://einvoice-validator-k2qw.onrender.com/mcp"

Gemini CLI

{"mcpServers":{"einvoice-validator":{"httpUrl":"https://einvoice-validator-k2qw.onrender.com/mcp"}}}

Cursor

{"mcpServers":{"einvoice-validator":{"url":"https://einvoice-validator-k2qw.onrender.com/mcp"}}}

VS Code

{"servers":{"einvoice-validator":{"type":"http","url":"https://einvoice-validator-k2qw.onrender.com/mcp"}}}

Antigravity

agy mcp add einvoice-validator https://einvoice-validator-k2qw.onrender.com/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"einvoice-validator","server_url":"https://einvoice-validator-k2qw.onrender.com/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"einvoice-validator","server_url":"https://einvoice-validator-k2qw.onrender.com/mcp"}

Tools

explain_rule ~90 tokens
Explain an EN 16931 / XRechnung / Peppol business rule by id (e.g. BR-CO-10, BR-DE-15, PEPPOL-EN16931-R001): what it means and how to fix it.
validate_einvoice ~173 tokens
Validate an XRechnung / Peppol BIS 3 / EN 16931 e-invoice (UBL 2.1 Invoice/CreditNote or CII CrossIndustryInvoice XML) with the official KoSIT validator. Returns accepted/rejected, the matched scenario and every error and warning with rule id, message, location and a link to a plain-language explana

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