io.usefulapi由 usefulapi.io 發布官方發布者v1.0.0更新於 Nov 8, 2026
Validate VAT numbers, look up VAT rates and review past checks and plan hits in Vatstack.
發布方自己的服務：Ably MCP by usefulapi
託管式 Vatstack 伺服器，讓助理驗證增值稅號、依國家或 IP 查詢增值稅稅率，並檢視歷史驗證紀錄與方案用量。
Web executable，透過 Streamable HTTP。 遠端服務在工作區中設定後即可從網頁執行環境執行。
把這段提示詞貼上到 Claude Code、Codex、Cursor 等代理程式，或 SourceWeft 對話中。代理程式會讀取該伺服器的安裝指南，先向你展示發布者、端點和登入方式，經你同意後再把它新增到你的客戶端。金鑰不會寫進任何命令。
閱讀 https://sourceweft.com/mcp/io.usefulapi%2Fvatstack/install.md，並按其中說明把這個 MCP 伺服器接入我的客戶端。修改任何設定之前，先告訴我它的發布者、端點和登入方式，等我確認。不要把 API 金鑰寫進命令或我會提交的檔案；問我金鑰應從哪裡取得。把它新增到你客戶端的 mcpServers 設定中。
{
"mcpServers": {
"vatstack-by-usefulapi": {
"type": "http",
"url": "https://vatstack.usefulapi.io/mcp"
}
}
}Use your Vatstack account from Claude, Cursor, or any MCP client. Check VAT numbers against government registers, look up VAT rates, and read plan hit usage. Hosted, no local install: connect with your own credentials.
Live endpoint: https://vatstack.usefulapi.io/mcp · Homepage: https://usefulapi.io
https://vatstack.usefulapi.io/mcp.claude mcp add --transport http vatstack https://vatstack.usefulapi.io/mcp, then run /mcp to log in.Add only the URL. Do not add an Authorization header or an API key to the client config: the server signs you in with OAuth, and the login page asks for your Vatstack credentials.
Step-by-step setup, where to find your credentials, and FAQ: https://usefulapi.io/vatstack/
On first connect you provide a Vatstack secret key from your Vatstack dashboard, under your API keys. Use the secret key, not the public key. The server validates it and stores it per user. No keys go in config files.
read tools are read-only; write tools mutate data (clients should confirm them); meta tools report usage, manage your subscription or send a feature request.
Each paid plan covers this server only. Ask your AI to run vatstack_upgrade and choose Pro or Pro+, billed monthly or yearly (it returns a Stripe Checkout link). If you already have Pro, ask to change it to Pro+. The change requires your confirmation, keeps your billing interval and charges the price difference for the rest of the period immediately. Cancel any time with vatstack_cancel_subscription: your paid plan continues to the end of the paid period, with no refund for the current period, and asking to resume the same plan with vatstack_upgrade before then undoes the cancel. Or write to [email protected].
MIT — see LICENSE. Documentation only; the server is hosted.
來源：servers/vatstack/README.md，提交 0be0869
Validate a VAT number
Check a VAT number against the official government register. Returns whether the company is active and VAT-registered, with its name and address when the register gives them. Each check creates a validation record and uses one hit of the plan. Vatstack: POST /v1/validations.
typevat_number必填List VAT validations
List past VAT number validations, newest first. Filter by batch, number, type or request date range. Vatstack: GET /v1/validations.
pagetypebatchlimitqueryrequested_sincerequested_untilGet a VAT validation
Get one VAT validation by its id, with the register result and any error code. Vatstack: GET /v1/validations/{id}.
validation_id必填List VAT rates
List standard and reduced VAT rates by country, including rates for digital products. Filter by a two-letter country code or EU member state. Vatstack: GET /v1/rates.
pagelimitcountry_codemember_stateGet the VAT rate for an IP address
Get the VAT rate that applies to an IPv4 or IPv6 address, from its geolocated country. Leave the address empty to use the requesting address. Vatstack: GET /v1/rates/geolocate.
ip_addressGet plan hit usage
Get the hits used this month and the plan capacity, for supplies and validations. Check it before a batch of validations. Vatstack: GET /v1/hits.
無需輸入參數。
已滿足適用檢查項的 100%
該評分衡量此收錄條目的完整程度，依據註冊中心條目、端點與公開來源計算得出。它不是對伺服器本身的評價，也不表示伺服器安全或目前可用：可連通性是帶日期的檢查結果，評分也不包含安裝量或使用者評價。
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{ "mcpServers": { "vatstack": { "url": "https://vatstack.usefulapi.io/mcp" } }}