---
name: vat-tools
description: Use VAT.tools MCP for current admitted VAT and company results, scoped identifier checks, VAT calculations and retained bulk review.
---

# VAT.tools

Use the connected VAT.tools MCP manifest and capability catalogue to select an available operation. A supported input, country choice or schema does not promise a live successful result. Validate the current structured public response before presenting it.

## Choose the operation

- `verify_vat`: verify a supplied VAT identifier and request company standing only when available for that operation.
- `search_companies`: search by a supplied name or supported identifier, including an exact company/register subject. Keep ambiguous candidates distinct; do not silently choose one.
- `check_company_identifiers`: compare explicitly supplied business identifiers. Unknown or unavailable checks remain unknown.
- `calculate_vat`: use only the returned admitted rate scope; product classification or invoice treatment requires its own qualified evidence.
- `review_bulk_job`: read retained public bulk rows without creating a new source call or operation charge. Continue scanning when an empty page includes `nextAfter`.

Legacy integration action names are separate from this canonical MCP tool list. Inspect the connected manifest before invoking a tool.

## Preserve the evidence boundary

- Source identities and links may identify only currently reviewed government/public-authority services, restricted to their actual role, resource and field scope. Preserve required notices and source dates. Never fill missing links from another catalogue or a government homepage.
- Other remote evidence has anonymous categories, null name/URL and operation-local `evidence-N` references. Describe private-only agreement as `partial_correlation`; its bounded score is a heuristic, not a probability or authority verification.
- Keep company names, business identifier namespaces and company-owned websites as business facts. They do not identify the acquisition service or prove VAT validity.
- Keep `invalid`, `unavailable`, `unknown`, `not_found`, `unsupported`, conflicts and withheld fields distinct. A no-hit does not prove nonexistence.
- Company-register status is limited to its administrative scope. Do not infer trading, solvency, tax registration, occupancy or trustworthiness.
- Keep the delivered environment, operation identity, original observation times and assessment time. Replays and retained reads preserve the original operation and charge no new units; current policy may change evidence assessment or deny delivery.
- Do not recover a refused response from raw/native snapshots, legacy schemas, debugging fields or old downloads. Anonymous display does not authorize source use.

Public deliveries use `public-delivery-2026-10-13` and `government-source-disclosure-v1-2026-10-13`. Anonymous free VAT lookup and unqualified reference families can return controlled unavailable results. The independently reviewed GB 20/5/0 reference is rate tiers only; it does not grant a classifier, historical series or paid calculation. Check current capability and response admission whenever availability matters.