temsor API
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EU VAT Rates

Dated EU-27 VAT rates (standard, reduced, super-reduced, parking) plus the Union OSS threshold. Not a goods classification.

POST /v1/eu/vat/rates · 1 credit · deterministic

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POST/v1/eu/vat/rates 
{
  "country": "DE",
  "asOf": "2026-01-15"
}
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Why this exists

Built for hostile input

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Repeated inputs come from cache and cost zero credits. If a response ever fails its own schema, the call is refunded automatically.

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Validation1

/v1/eu/vat/rates EU VAT Rates deterministic 1 credit

Dated EU-27 VAT rates (standard, reduced, super-reduced, parking) plus the Union OSS threshold. Not a goods classification.

Invoice software that hard-codes “Germany is 19%” breaks the day a member state moves a rate, and it never knew the reduced list. This is a point-in-time schedule of published rates for the EU VAT area, keyed by country and asOf. It is a schedule of rates, not which goods fall in which reduced band — there is no HS or NACE mapping. Great Britain, Northern Ireland, Switzerland, Norway and Türkiye are recognised and returned with null rates. If the table has no row for that date the rates are null; the last known line is not reused.

Parameters

country* string ISO 3166-1 alpha-2 country (EL accepted as Greece).
asOf string ISO date YYYY-MM-DD. Defaults to today UTC.
POST/v1/eu/vat/rates 
{
  "country": "DE",
  "asOf": "2026-01-15"
}
no request sent yet
Press Run to call the live API from your browser.

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Use it from an AI assistantthe same catalogue, exposed as MCP tools

Every endpoint is also published over the Model Context Protocol, so Claude, ChatGPT or your own agent can call it directly — no glue code, no wrapper functions. The assistant sees the same input schemas and the same metering.

Currently 27 tools. New endpoints appear automatically; nothing to update on your side.

claude_desktop_config.json

{
  "mcpServers": {
    "temsor": {
      "url": "https://api.temsor.com/mcp",
      "headers": { "x-api-key": "fk_live_…" }
    }
  }
}

Quickstart

Official client: npm install temsor-api · npmjs.com/package/temsor-api

Node.js

import Client from "temsor-api";

const api = new Client({ apiKey: KEY });
const r = await api.${(() => {
  const first = apis[0];
  return first.slug.split(/[/-]/).map((p, i) => (i === 0 ? p : p[0].toUpperCase() + p.slice(1))).join('');
})()}(${esc(JSON.stringify(apis[0].examples[0]?.input ?? {}))});
console.log(r, r.$meta);

cURL

curl -s https://api.temsor.com/v1/eu/vat/rates \
  -H "content-type: application/json" \
  -H "x-api-key: fk_live_…" \
  -d '{"country":"DE","asOf":"2026-01-15"}'

JavaScript

const res = await fetch("https://api.temsor.com/v1/eu/vat/rates", {
  method: "POST",
  headers: { "content-type": "application/json", "x-api-key": KEY },
  body: JSON.stringify({"country":"DE","asOf":"2026-01-15"})
});
const { data } = await res.json();

Python

import httpx
r = httpx.post("https://api.temsor.com/v1/eu/vat/rates",
    headers={"x-api-key": KEY},
    json={"country":"DE","asOf":"2026-01-15"})
data = r.json()["data"]