# iva.pt — EU VAT check (VIES) and Portuguese VAT law (remote · iva.pt)

Validate EU VAT numbers in VIES and read the Portuguese VAT Code and RITI in Portuguese or English.

- Trust score: 75/100 (medium)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `iva.pt`: 75/100 (this document), [markdown](https://verifymcp.io/servers/pt-iva-iva/iva.md), [page](https://verifymcp.io/servers/pt-iva-iva/iva)

## Channel facts

- Endpoint: `https://iva.pt/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.1.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, 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 2026-11-05.

- **Endpoint Security**: 77/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC is configured correctly; the domain's records validate against the full chain to the root.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 71/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 626 tokens (~156/item across 4 items; 4 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 27/100
  - Stability observed for 8 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.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 4 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the iva.pt — EU VAT check (VIES) and Portuguese VAT law MCP server?

iva.pt — EU VAT check (VIES) and Portuguese VAT law is a hosted endpoint at https://iva.pt/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http pt-iva-iva 'https://iva.pt/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "pt-iva-iva": {
      "url": "https://iva.pt/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "pt-iva-iva": {
      "type": "http",
      "url": "https://iva.pt/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.pt-iva-iva]
url = "https://iva.pt/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "pt-iva-iva": {
      "type": "remote",
      "url": "https://iva.pt/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add pt-iva-iva --url 'https://iva.pt/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  pt-iva-iva:
    url: "https://iva.pt/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "pt-iva-iva": {
      "Transport": "http",
      "Url": "https://iva.pt/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add pt-iva-iva -t streamable-http -u 'https://iva.pt/mcp'
```

### Other

```json
{
  "mcpServers": {
    "pt-iva-iva": {
      "type": "http",
      "url": "https://iva.pt/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## 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.

### 2026-11-04 (score 75, +1)

No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-02 (score 74, +1)

No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-30 (score 73, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-29 (score 72, 0)

- [functional improvement] Stability: unverified → 0.03

### 2026-10-28 (score 72)

First indexed and scored.

## MCP tools (4)

### `validar_iva` (~218 tokens)

Validar número de IVA (VIES)

Valida em tempo real um número de IVA intracomunitário de qualquer Estado-membro da UE (ou da Irlanda do Norte, XI) no sistema VIES da Comissão Europeia. Devolve se é válido e, quando o Estado-membro os disponibiliza, o nome e a morada registados. Se for indicado o número de IVA do requerente, faz a verificação qualificada e devolve o número de consulta da Comissão Europeia. Validates an EU VAT number in VIES.

Input parameters:

- `idioma` (string): Idioma das mensagens (predefinição: pt).
- `numero` (string, required): Número de IVA com o prefixo do país, por exemplo PT515060445, ESB12345678, DE123456789. A Grécia usa EL.
- `pais` (string): Código do país (opcional se o número já tiver prefixo).
- `requerente` (string): Opcional: número de IVA de quem faz a consulta, para obter o número de consulta (verificação qualificada).

### `artigo_civa` (~119 tokens)

Artigo do Código do IVA

Devolve o texto em vigor de um artigo do Código do IVA português (CIVA), com a ligação para iva.pt. Fonte: Autoridade Tributária e Aduaneira. Também em inglês (tradução não oficial) com idioma=en. Portuguese VAT Code article, optionally in English.

Input parameters:

- `artigo` (string, required): Número do artigo, por exemplo "36", "7-A" ou "listas" (listas anexas).
- `idioma` (string): pt: texto oficial (predefinição); en: tradução inglesa não oficial.

### `artigo_riti` (~117 tokens)

Artigo do RITI

Devolve o texto em vigor de um artigo do Regime do IVA nas Transações Intracomunitárias (RITI), com a ligação para iva.pt. Fonte: Autoridade Tributária e Aduaneira. Também em inglês (tradução não oficial) com idioma=en.

Input parameters:

- `artigo` (string, required): Número do artigo, por exemplo "36", "7-A" ou "listas" (listas anexas).
- `idioma` (string): pt: texto oficial (predefinição); en: tradução inglesa não oficial.

### `pesquisar_legislacao` (~98 tokens)

Pesquisar no CIVA e no RITI

Pesquisa por palavras (em português) nos títulos e no texto dos artigos do Código do IVA e do RITI. Devolve os artigos mais relevantes com ligação. Use depois artigo_civa ou artigo_riti para ler o texto.

Input parameters:

- `diploma` (string): Opcional: limitar a um diploma.
- `pesquisa` (string, required): Palavras a procurar, por exemplo "declaração recapitulativa" ou "autoliquidação".

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/pt-iva-iva/iva#diagnostics

## Score history

- 2026-11-05: 75
- 2026-11-04: 75
- 2026-11-03: 74
- 2026-11-02: 74
- 2026-11-01: 73
- 2026-10-31: 73
- 2026-10-30: 73
- 2026-10-29: 72
- 2026-10-28: 72

## Common questions

### What is the iva.pt — EU VAT check (VIES) and Portuguese VAT law MCP server?

iva.pt — EU VAT check (VIES) and Portuguese VAT law is an MCP server listed in the public MCP registry as pt.iva/iva. Validate EU VAT numbers in VIES and read the Portuguese VAT Code and RITI in Portuguese or English. This page covers its hosted endpoint (https://iva.pt/mcp).

### Is the iva.pt — EU VAT check (VIES) and Portuguese VAT law MCP server safe to use?

iva.pt — EU VAT check (VIES) and Portuguese VAT law scores 75 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the iva.pt — EU VAT check (VIES) and Portuguese VAT law MCP server expose?

iva.pt — EU VAT check (VIES) and Portuguese VAT law exposes 4 tools: validar_iva, artigo_civa, artigo_riti, pesquisar_legislacao. Their descriptions and schemas cost roughly 552 tokens of context every time the server is loaded.

### Does the iva.pt — EU VAT check (VIES) and Portuguese VAT law MCP server require authentication?

No. We connected to iva.pt — EU VAT check (VIES) and Portuguese VAT law without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the iva.pt — EU VAT check (VIES) and Portuguese VAT law MCP server still maintained?

iva.pt — EU VAT check (VIES) and Portuguese VAT law is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://iva.pt/mcp
- Website: https://iva.pt/en/api
- Changelog RSS feed: https://verifymcp.io/servers/pt-iva-iva/iva.xml
- Changelog JSON feed: https://verifymcp.io/servers/pt-iva-iva/iva.json
- HTML version of this page: https://verifymcp.io/servers/pt-iva-iva/iva