Numeral MCP by usefulapi

io.usefulapi由 usefulapi.io 发布官方发布者v1.36.5更新于 Nov 8, 2026

Calculate sales tax & VAT, record transactions and refunds, manage products and customers.

发布方自己的服务：Ably MCP by usefulapi

已验证Streamable HTTP可网页运行金融商业与电商

概览

AI 生成的概览

托管式 Numeral 服务器，用于计算销售税与增值税，并管理税务交易、退款、产品和客户。

可以做什么
  • 检查 API 健康状态与环境，查看本月用量，或提交功能请求和变更套餐
  • 根据客户地址和订单行项目计算销售税或增值税，返回各辖区税率与合计
  • 按 Numeral 或自有参考 ID 读取已记录的交易、退款、产品和客户
  • 使用先前的计算 ID 将已完成的销售记录为交易
  • 为交易记录全额或部分退款
  • 创建或更新产品，并创建客户记录
适用场景
适合需要让助手为订单报价销售税或增值税，并让 Numeral 中的税务记录与真实销售、退款、商品目录和客户保持同步，且不想本地安装的场景。
运行要求
远程 streamable HTTP 端点，无需本地安装包。仅填写 URL 并通过 OAuth 登录，首次连接时粘贴 Numeral 控制台中的 API 密钥。需要 Numeral 账户；免费套餐每月 50 次工具调用。
安装前请注意
写入类工具会创建用于申报的实时税务/合规记录：交易、退款、产品和客户，执行前应先确认。付费套餐通过升级工具返回的 Stripe 结账链接付款，取消后服务持续到已付费周期结束，当期不退款。API 密钥按用户存储在托管服务上。

安装

在 SourceWeft 中

  1. 打开 控制台中的 Numeral MCP by usefulapi，将其添加到工作区。
  2. 为需要使用其工具的对话启用该服务。

Web executable，通过 Streamable HTTP。 远程服务在工作区中配置后即可从网页运行时运行。

交给智能体安装

把这段提示词粘贴到 Claude Code、Codex、Cursor 等智能体，或 SourceWeft 对话中。智能体会读取该服务器的安装指南，先向你展示发布者、端点和登录方式，经你同意后再把它添加到你的客户端。密钥不会写进任何命令。

阅读 https://sourceweft.com/mcp/io.usefulapi%2Fnumeral/install.md，并按其中说明把这个 MCP 服务器接入我的客户端。修改任何配置之前，先告诉我它的发布者、端点和登录方式，等我确认。不要把 API 密钥写进命令或我会提交的文件；问我密钥应从哪里获取。

查看智能体所依据的安装指南

其他 MCP 客户端

把它添加到你客户端的 mcpServers 配置中。

{
  "mcpServers": {
    "numeral-by-usefulapi": {
      "type": "http",
      "url": "https://numeral.usefulapi.io/mcp"
    }
  }
}

README

Numeral MCP by usefulapi

Manage Numeral sales-tax compliance from Claude, Cursor, or any MCP client — calculate sales tax and VAT, record transactions and refunds, and manage products and customers. Hosted, no local install: connect with your Numeral API key.

Live endpoint: https://numeral.usefulapi.io/mcp · Homepage: https://usefulapi.io

Connect

  • Claude (claude.ai, Desktop): open Customize → Connectors, click + Add → Add custom connector, and paste https://numeral.usefulapi.io/mcp.
  • Claude Code: claude mcp add --transport http numeral https://numeral.usefulapi.io/mcp, then run /mcp to log in.
  • VS Code: Add to VS Code.
  • Cursor and other clients: add the URL as a remote MCP server:
json
{  "mcpServers": {    "numeral": {      "url": "https://numeral.usefulapi.io/mcp"    }  }}

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 Numeral credentials.

Step-by-step setup, where to find your credentials, and FAQ: https://usefulapi.io/numeral/

On first connect you'll paste your Numeral API key (from the Numeral dashboard). It's validated, stored per-user, and scoped to you — no keys in config files.

Tools

ToolTypeWhat it does
numeral_pingreadPing (health check)
numeral_calculate_taxreadCalculate tax
numeral_get_transactionreadGet transaction
numeral_list_transaction_refundsreadList transaction refunds
numeral_list_productsreadList products
numeral_get_productreadGet product
numeral_get_customerreadGet customer
numeral_create_transactionwriteCreate transaction
numeral_create_refundwriteCreate refund
numeral_create_productwriteCreate product
numeral_create_customerwriteCreate customer
numeral_usage_statusmetaUsage status (free-tier meter)
numeral_request_featuremetaRequest a missing feature
numeral_upgrademetaUpgrade to Pro or Pro+
numeral_cancel_subscriptionmetaCancel the Pro subscription

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.

Pricing

PlanPriceLimit
Free$050 tool calls / month
Pro (per user)$9/mo or $90/yr (2 months free)Unlimited*

*Pro has a fair use limit of 10,000 tool calls a month on this server. For more, write to [email protected].

Pro covers this server only. Subscribe with numeral_upgrade (it returns a Stripe Checkout link). Cancel any time with numeral_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running numeral_upgrade before then undoes the cancel. Or write to [email protected].

License

MIT — see LICENSE. Documentation only; the server is hosted.

来源：servers/numeral/README.md，提交 4046075

工具

11

numeral_ping

Ping (health check)

Health check — verifies the API key works and reports the environment (test/prod), api_version, and server timestamp. Numeral: GET /tax/ping.

无需输入参数。

numeral_calculate_tax

Calculate tax

Calculate sales tax / VAT for an order — a STATELESS quote that persists nothing (record it later with numeral_create_transaction using the returned calculation id). Returns per-jurisdiction rates, total_tax_amount, and totals. Provide a customer address and one or more line items (each needs reference_product_id OR product_category). Amounts are in the currency's smallest unit (cents). Numeral: POST /tax/calculations.

输入参数customer必填metadataorder_details必填origin_address

numeral_get_transaction

Get transaction

Get a recorded transaction by its Numeral id (tr_...). Returns the transaction with its line items, currencies, and metadata. Numeral: GET /tax/transactions/{transaction_id}.

输入参数transaction_id必填

numeral_list_transaction_refunds

List transaction refunds

List all refunds recorded against a transaction. Returns {refunds:[...]}. Numeral: GET /tax/transactions/{transaction_id}/refunds.

输入参数transaction_id必填

numeral_list_products

List products

List your Numeral products (up to 50 per page), each with its reference id, name, and product_category. Use `cursor` (the last_product_id from a previous page) to paginate; has_more indicates more pages. Numeral: GET /tax/products.

输入参数cursor

numeral_get_product

Get product

Get a single product by its reference_product_id (your id). Returns the product's name, product_category, and timestamps. Numeral: GET /tax/products/{reference_product_id}.

输入参数reference_product_id必填

numeral_get_customer

Get customer

Get a customer by id. By default `customer_id` is the Numeral id (cus_...); set id_type to "reference" to look up by your own reference_customer_id. Returns name, email, and tax-exempt status. Numeral: GET /tax/customers/{customer_id}.

输入参数id_typecustomer_id必填

numeral_create_transaction

Create transaction

RECORDS a completed sale as a transaction — this WRITES a live tax/compliance record used for filings. Supply the `calculation_id` returned by numeral_calculate_tax and your `reference_order_id`. Numeral: POST /tax/transactions.

输入参数metadatacalculation_id必填reference_order_id必填transaction_processed_at

numeral_create_refund

Create refund

RECORDS a refund against a transaction — this WRITES a live tax/compliance record (adjusts tax owed). Use type="full" to refund the whole transaction, or type="partial" with line_items (each keyed by reference_product_id) for a partial refund. Numeral: POST /tax/refunds.

输入参数type必填line_itemstransaction_id必填refund_processed_at

numeral_create_product

Create product

CREATES (or upserts) a product with its tax category — this WRITES to your Numeral product catalog, which drives future tax calculations. Numeral: POST /tax/products.

输入参数product_category必填reference_product_id必填reference_product_name必填

numeral_create_customer

Create customer

CREATES a customer record — this WRITES to your Numeral customer list (used for order tracking and tax exemptions). Numeral: POST /tax/customers.

输入参数nameemail必填is_tax_exemptreference_customer_id

版本历史

22
  1. v1.36.5最新Nov 8, 2026
  2. v1.36.4Nov 7, 2026
  3. v1.35.3Nov 5, 2026
  4. v1.35.2Nov 5, 2026
  5. v1.35.1Nov 4, 2026
  6. v1.35.0Nov 3, 2026
  7. v1.34.1Nov 3, 2026
  8. v1.33.0Nov 1, 2026
  9. v1.31.0Oct 31, 2026
  10. v1.30.0Oct 31, 2026
  11. v1.29.2Oct 30, 2026
  12. v1.29.0Oct 30, 2026
  13. v1.24.0Oct 26, 2026
  14. v1.21.3Oct 25, 2026
  15. v1.21.0Oct 25, 2026
  16. v1.20.0Oct 24, 2026
  17. v1.17.0Oct 23, 2026
  18. v1.16.4Oct 22, 2026
  19. v1.16.3Oct 21, 2026
  20. v1.11.1Oct 9, 2026
  21. v1.10.0Oct 9, 2026
  22. v1.0.0Sep 16, 2026

评分

已满足适用检查项的 100%

该评分衡量此收录条目的完整程度，依据注册中心条目、端点与公开来源计算得出。它不是对服务器本身的评价，也不表示服务器安全或当前可用：可连通性是带日期的检查结果，评分也不包含安装量或用户评价。

  • 近 30 天内可连通必需25 分
  • 已声明认证方式必需10 分
  • 已列出工具必需15 分
  • 描述必需15 分
  • 图标10 分
  • 文档15 分
  • 许可证10 分

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