# UK Data: VAT number checks

> Check a UK or EU VAT number against official sources and get the registered name and address

- name: uk.co.reliness/validation
- version: 1.5.0
- connection class: R0 (autonomous)
- trust: 82/100 flags: no-repository
- quality: 91/100 (strong)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/uk.co.reliness%2Fvalidation
- tools: https://api.protogrid.dev/v1/servers/uk.co.reliness%2Fvalidation/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "validation": {
      "type": "http",
      "url": "https://ukdata.reliness.co.uk/mcp/validation",
      "headers": {
        "Authorization": "Bearer ${VALIDATION_TOKEN}"
      }
    }
  }
}
```

Placeholders to fill: `${VALIDATION_TOKEN}`.

## Trust

- hygiene: 80
- liveness: 99
- freshness: 100
- provenance: 55
- drivers: +dns-namespace +website +reachable +uptime-96% +updated-7d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 91/100 (strong)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 100 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- pass `tools.annotations`: 2 of 2 tools declare readOnlyHint or destructiveHint
- pass `tools.directory_hints`: every tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
- pass `tools.token_cost`: about 289 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump
- pass `tools.hidden_text`: no hidden text in tool names, descriptions, schemas or annotations

### stability: 100 (weight 15)

- pass `stability.changes`: no tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name
- pass `stability.new_links`: no tool change named a new site

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 2, about 289 tokens to load them all
- tool set hash: cb342b27d55388bbd0951d623a3711e4
- badge: [![protogrid quality](https://protogrid.dev/badge/uk.co.reliness/validation.svg)](https://protogrid.dev/servers/uk.co.reliness/validation)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

_No tool definition changes recorded._

## Remotes

- https://ukdata.reliness.co.uk/mcp/validation (streamable-http, auth none, reachable true, uptime30d 0.96428573)

## Packages

_none_

## Tools (2)

- `uk_vat_check`: Validate a UK VAT registration number against the official HMRC register and return the registered business name and address. For invoicing, supplier checks and VAT reclaim. (cost: 2 credits)
- `vat_check`: Validate a VAT number and get the registered business name and address. EU numbers via the official VIES service, UK numbers via HMRC. Use for invoicing, supplier onboarding, tax and KYB checks. Accepts e.g. IE6388047V, DE811234567, GB553557881. (cost: 2 credits)