# io.github.vatnode/vatnode-mcp (npm · vatnode-mcp)

Official MCP server: EU VAT validation via VIES, plus offline rates and format checks.

- Trust score: 79/100 (medium)
- Change this week: +36
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- npm · `vatnode-mcp`: 79/100 (this document), [markdown](https://verifymcp.io/servers/vatnode-vatnode-mcp/vatnode-mcp.md), [page](https://verifymcp.io/servers/vatnode-vatnode-mcp/vatnode-mcp)

## Channel facts

- Registry: `npm`
- Package: `vatnode-mcp`
- Version: `1.1.0`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-03.

- **Supply Chain Security**: 90/100
  - No malware found by supply-chain analysis.
  - Only part of the dependency tree could be resolved (96 of 100), so this covers what we could see, not the whole tree.
  - No install/post-install scripts declared.
  - Only part of the dependency tree could be resolved (96 of 100), so this covers what we could see, not the whole tree.
- **Provenance & Transparency**: 97/100
  - Source repository is publicly reachable at the declared URL.
  - Cryptographically verified build provenance (signed, bound to vatnode/vatnode-mcp).
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 0 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 71/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 1014 tokens (~202/item across 5 items; 5 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 23/100
  - Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add vatnode-vatnode-mcp -- npx -y vatnode-mcp
```

### Codex

```bash
codex mcp add vatnode-vatnode-mcp -- npx -y vatnode-mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "vatnode-vatnode-mcp": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "vatnode-mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add vatnode-vatnode-mcp --command npx --arg -y --arg vatnode-mcp
```

### Hermes

```yaml
mcp_servers:
  vatnode-vatnode-mcp:
    command: "npx"
    args: ["-y", "vatnode-mcp"]
```

### Other

```json
{
  "mcpServers": {
    "vatnode-vatnode-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "vatnode-mcp"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-03 (score 79, +1)

- [functional] Package version: 1.0.0 → 1.1.0

### 2026-08-02 (score 78, +41)

- [security regression] Provenance: pass → unverified
- [security regression] Install scripts: pass → unverified
- [security improvement] Known CVEs: unverified → partial
- [security improvement] Malware scan: unverified → pass
- [security] The attested source repository moved: vatnode/vatnode-mcp
- [functional regression] Security disclosure: fail → unverified
- [functional regression] License: pass → unverified
- [functional regression] Tool coverage: 100 → unverified
- [functional regression] Maintenance: pass → unverified
- [functional improvement] MCP protocol: unverified → pass
- [functional improvement] Stability: unverified → 0.20
- [functional improvement] Dependency health: unverified → partial
- [functional improvement] Schema quality: unverified → excellent
- [functional] Licence: MIT

### 2026-08-01 (score 37, +32)

- [security improvement] Install scripts: unverified → pass
- [security improvement] Provenance: unverified → pass
- [security] The attested source repository moved: vatnode/vatnode-mcp
- [functional improvement] License: unverified → pass
- [functional improvement] Tool coverage: unverified → 100
- [functional improvement] Maintenance: unverified → pass
- [functional] Licence: MIT

### 2026-07-31 (score 5, −20)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 25, −18)

- [security regression] Malware scan: pass → unverified

### 2026-07-27 (score 43)

First indexed and scored.

## MCP tools (5)

### `list_eu_vat_rates` (~169 tokens)

List EU VAT rates

Returns current VAT rates for all EU member states (plus XI for Northern Ireland). Read-only and offline: no network call, no API key, no rate limit, no side effects. Takes no arguments. Output: { rates: Array<{ countryCode, countryName, vatName, vatAbbr, currency, standardRate, reducedRates[], superReducedRate, parkingRate, vatNumberFormat, vatNumberPattern, updatedAt }>, count, updatedAt }. Rates are percentages (e.g. 25.5). Use when the user asks for an overview, a comparison across countries, or "all EU VAT rates". For a single country prefer get_country_vat_rates. Data is sourced from the EU Commission TEDB and updated daily. Free, no API key required.

### `get_country_vat_rates` (~227 tokens)

Get VAT rates for a country

Returns the standard, reduced, super-reduced and parking VAT rates for a single European country, plus the VAT number format and regex. Read-only and offline: no network call, no API key, no rate limit, no side effects. Accepts ISO 3166-1 alpha-2 codes (DE, FR, IT, …); also covers non-EU European jurisdictions where available (NO, CH, GB, UA, TR, …). Output: { countryCode, countryName, vatName, vatAbbr, currency, standardRate, reducedRates[], superReducedRate, parkingRate, vatNumberFormat, vatNumberPattern, updatedAt }; rates are percentages and may be null where not applicable. Returns an error if the country code is unknown. Use when the user asks "what is the VAT rate in X" or needs the VAT number format for a country. Free, no API key required.

Input parameters:

- `countryCode` (string, required): ISO 3166-1 alpha-2 country code, e.g. "DE", "FR", "IT".

### `check_vat_format` (~176 tokens)

Check VAT number format

Performs an offline syntactic check of a VAT number against the country-specific regex pattern. Read-only and offline: no network call, no API key, no rate limit, no side effects. Does NOT verify the VAT with VIES (a valid format does not mean the VAT is real or active) — use validate_vat_number for that. Output: { input, normalized, countryCode, validFormat (boolean), error }; countryCode is null when the prefix is unknown. Use when the user wants a quick sanity check on the shape of a VAT ID without burning a quota call. Free, no API key required.

Input parameters:

- `vatId` (string, required): A VAT number, with or without spaces/dashes, with or without country prefix (e.g. "DE123456789", "IE 6388047 V").

### `list_supported_countries` (~163 tokens)

List supported countries

Returns every country the vatnode server has VAT data for (EU-27 + XI for Northern Ireland + ~17 other European jurisdictions such as NO, CH, GB, UA, TR). Read-only and offline: no network call, no API key, no rate limit, no side effects. Takes no arguments. Output: { countries: Array<{ countryCode, countryName, isEUMember, viesValidationSupported }>, count, euCount, updatedAt }, sorted by countryCode. `viesValidationSupported: true` means validate_vat_number can do live VIES verification; non-EU jurisdictions are rate-lookup only. Use to discover coverage or to pick a valid countryCode before calling get_country_vat_rates or validate_vat_number.

### `validate_vat_number` (~279 tokens)

Validate EU VAT number

Verifies an EU VAT number against the official VIES service and returns validity, company name, address, registration date and other metadata. The audit-grade VIES consultation number (`consultationNumber`) is produced when a requester VAT is configured once in the vatnode dashboard Settings — a one-time account setup, not a per-call parameter. With a requester configured, every response is either a success with a non-null `consultationNumber` or an error; without one, `consultationNumber` is null and national-registry fallback stays enabled. Use whenever the user wants to confirm a VAT is real, look up the company behind a VAT, or needs evidence for accounting/compliance. Side effects: makes an authenticated network call to api.vatnode.dev (which queries the EU VIES service) and consumes one request from your monthly quota; it is read-only (verifies, never mutates) and safe to retry. Requires a vatnode API key (free tier available; set VATNODE_API_KEY). Only EU-27 + XI (Northern Ireland) are supported by VIES; other countries return an error.

Input parameters:

- `vatId` (string, required): EU VAT number, with country prefix. Spaces and dashes are stripped. Examples: "DE123456789", "IE6388047V", "FR12345678901".

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/vatnode-vatnode-mcp/vatnode-mcp#diagnostics

## Score history

- 2026-08-03: 79
- 2026-08-02: 78
- 2026-08-01: 37
- 2026-07-31: 5
- 2026-07-30: 25
- 2026-07-28: 43
- 2026-07-27: 43

## Links

- npm package: https://www.npmjs.com/package/vatnode-mcp
- Socket report: https://socket.dev/npm/package/vatnode-mcp
- Repository: https://github.com/vatnode/vatnode-mcp
- Website: https://vatnode.dev/docs/mcp
- Changelog RSS feed: https://verifymcp.io/servers/vatnode-vatnode-mcp/vatnode-mcp/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/vatnode-vatnode-mcp/vatnode-mcp/changelog.json
- HTML version of this page: https://verifymcp.io/servers/vatnode-vatnode-mcp/vatnode-mcp