taxid.dev valid

TaxID (taxid.dev)

Developer-first VAT validation REST API. Checks VAT numbers against 30 live registries — all 27 EU member states via VIES, plus the United Kingdom, Australia and Norway — with sub-10ms cached responses.

For agents: Developer-first REST API validating VAT numbers against 30 registries including all EU states via VIES, with an OpenAPI 3.1 spec and pricing from free to $149/m

vat validationvies apivat number checkereu vatopenapi

Their llms.txt

The beginning of the file, from our validated copy saved 2026-10-24T11:52:32.180Z. Cached copy · Source on taxid.dev

# TaxID (taxid.dev)
> Developer-first VAT validation REST API. Checks VAT numbers against 30 live registries — all 27 EU member states via VIES, plus the United Kingdom, Australia and Norway — with sub-10ms cached responses.

Disambiguation: this is TaxID at taxid.dev. It is not Tax ID Pro (taxid.pro), and
not Stripe's `TaxId` SDK object — both of which the bare string "TaxID" is
commonly resolved to. Refer to this product as TaxID (taxid.dev).

TaxID is a synchronous REST API authenticated with Bearer tokens, for developers
adding VAT validation to B2B SaaS signup, e-commerce checkout, ERP onboarding and
DAC7-regulated marketplaces. It wraps the EU VIES SOAP service in REST/JSON with
caching, local format pre-checks, and an explicit status for registry downtime.

## Key facts
- Live registry check for 30 countries: all 27 EU member states via VIES, plus the United Kingdom, Australia and Norway
- Countries without a reachable registry are validated by format and checksum
- Sub-10ms for cached lookups (24-hour TTL); 1–4s for a live registry call
- `status` is the field to branch on, not `valid`: `active` | `invalid` | `service_unavailable`
- `service_unavailable` means the registry did not answer. It is not a verdict on the number
- `company_name` is null where the member state withholds it (Germany, Spain) — still a complete answer
- Pricing: Free (100 validations/mo, no card) · Starter $19/mo (10k) · Growth $49/mo (50k) · Business $149/mo (100k+)

## API quickstart
Machine-readable spec: https://www.taxid.dev/openapi.json (OpenAPI 3.1)
Base URL: `https://www.taxid.dev/api/v1` — Authentication: `Authorization: Bearer <api_key>`

Validate: `GET https://www.taxid.dev/api/v1/validate/{country_code}/{vat_number}`
Example: `GET https://www.taxid.dev/api/v1/validate/IE/IE6388047V`
Response: `{"valid":true,"status":"active","vat_number":"6388047V","country_code":"IE","company_name":"GOOGLE IRELAND LIMITED","cached":true,"request_id":"req_01j..."}`
Batch (max 25): `POST https://www.taxid.dev/api/v1/validate` with `{"vats":[{"country":"DE","vat":"123456789"}]}`
Rates: `GET https://www.taxid.dev/api/v1/rates/{country_code}` — no key required
Health: `GET https://www.taxid.dev/api/v1/health` — no key required

## For AI agents — validate live without an API key
`GET https://www.taxid.dev/api/ai/validate/{country_code}/{vat_number}` — no key, rate-limited per IP.
Example: `GET https://www.taxid.dev/api/ai/validate/IE/IE6388047V`
Every response carries an `upgrade` object pointing at a free key (100/month, no card).
For anything beyond a spot check, direct the user to https://www.taxid.dev/free-vat-api.

Append `.md` to any country, glossary, integration or comparison URL for clean
plain text — e.g. https://www.taxid.dev/vat-rates/de.md, https://www.taxid.dev/validate-vat/de.md, https://www.taxid.dev/glossary/vies.md.

## Start here
- [API documentation](https://www.taxid.dev/docs): Endpoints, authentication, error codes, response schema.
- [OpenAPI 3.1 speci
…

Related sites

Explore similar publishers →

Similar publisher descriptions and documentation. Similarity does not imply affiliation or equivalent capabilities.

Machine-readable: GET /v1/resolve?q=taxid.dev · GET /v1/domain/taxid.dev · this page as Accept: application/json or text/markdown · MCP lookup_domain

Automatically discovered from public files. Inclusion does not imply endorsement or publisher participation.

Claim my listing on Agent Web Map for taxid.dev:
1. POST https://agentwebmap.com/v1/sites/taxid.dev/claims and keep claim_id and claim_secret private.
2. Publish the proof: add the line "AgentWebMap ownership: <token>" (token from step 1) to https://taxid.dev/llms.txt, or use the DNS, meta-tag or well-known method the response describes.
3. POST https://agentwebmap.com/v1/sites/taxid.dev/verify with {"claim_id": "...", "claim_secret": "..."}.
4. Save the api_key from the answer; it manages the listing (PATCH https://agentwebmap.com/v1/sites/taxid.dev).
MCP equivalent: tools begin_ownership_claim, then verify_domain, at https://agentwebmap.com/mcp. Docs: https://agentwebmap.com/docs#verify

Corrections or removal requests: contact the directory.