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0s and 1s CIS calculators

السجل الرسمي المالية والمدفوعات

Free UK CIS calculators: deductions, deadlines, late penalties, gross payment test, verification.

الشيفرة المصدرية الموقع التوثيق

التثبيت

أضف هذا إلى إعدادات MCP في عميلك (Claude Desktop: claude_desktop_config.json، وCursor: ‏.cursor/mcp.json، ويستخدم VS Code وغيره الصيغة نفسها «mcpServers»).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http 0s-and-1s-cis-calculators 'https://0sand1s.co.uk/mcp'
إعداد JSON (Claude Desktop وCursor وVS Code) 
{
    "mcpServers": {
        "0s-and-1s-cis-calculators": {
            "type": "http",
            "url": "https://0sand1s.co.uk/mcp"
        }
    }
}

التوثيق

مأخوذ من ملف README للمشروع على GitHub ويُحدَّث أسبوعيًا. تفتح الروابط على GitHub.

المحتويات
  1. 0s and 1s CIS MCP server
  2. Tools
  3. Connect
  4. Try the API
  5. About this repository

0s and 1s CIS MCP server

Free calculators for the UK Construction Industry Scheme (CIS), as a remote MCP server and a JSON API. For contractors who pay subcontractors, and the bookkeepers who do it for them.

No key and no account. Nothing you send is stored. Up to 60 requests a minute from one address, the API and the MCP server together.

Tools

ToolWhat it works out
cis_deductionThe CIS deduction on a payment: gross, VAT and materials in, deduction and net out, with the working
cis_gross_upThe gross to pay so the subcontractor receives a given net
cis_tax_monthThe tax month a date falls in, the return due date (19th) and the electronic payment date (22nd, moved for weekends and bank holidays)
cis_late_penaltiesWhat a late CIS300 or nil return costs, stage by stage
cis_gross_payment_turnover_testWhether a business meets the turnover test for gross payment status
cis_needs_verificationWhether a subcontractor must be verified with HMRC before a payment
cis_nil_return_checkWhether a nil return is due for a tax month

Money goes in as pounds ("1,200.00") and comes back as pence and pounds. Dates are YYYY-MM-DD. Every answer lists the GOV.UK and legislation.gov.uk pages it follows. Answers follow the published rules; they are not tax advice and do not come from HMRC.

Connect

Claude (claude.ai and the desktop app): Customize, Connectors, Add custom connector, then name it 0s and 1s with the URL https://0sand1s.co.uk/mcp.

Claude Code:

claude mcp add --transport http 0sand1s https://0sand1s.co.uk/mcp

Cursor (~/.cursor/mcp.json):

{ "mcpServers": { "0sand1s": { "url": "https://0sand1s.co.uk/mcp" } } }

VS Code (.vscode/mcp.json):

{ "servers": { "0sand1s": { "type": "http", "url": "https://0sand1s.co.uk/mcp" } } }

Try the API

curl "https://0sand1s.co.uk/api/v1/deduction?gross=1200&vat=200&materials=300&rate=20"

About this repository

This repository holds the listing for the official MCP registry (server.json, name uk.co.0sand1s/cis) and this README. The server is hosted by 0s and 1s, CIS filing software for contractors. Questions: support@0sand1s.co.uk.

الأسئلة الشائعة

ما هو 0s and 1s CIS calculators؟

Free UK CIS calculators: deductions, deadlines, late penalties, gross payment test, verification.

كيف أثبّت 0s and 1s CIS calculators؟

يعمل كخادم بعيد. في Claude Code: claude mcp add --transport http 0s-and-1s-cis-calculators 'https://0sand1s.co.uk/mcp'. وفي العملاء الآخرين، الصق إعداد JSON من هذه الصفحة في إعدادات MCP الخاصة بهم.

هل يحتاج 0s and 1s CIS calculators إلى مفتاح API؟

لا يذكر إدراجه في السجل أي مفتاح أو سر إلزامي. قد تتطلب بعض الميزات حسابًا لدى الخدمة التي يتصل بها.

هل 0s and 1s CIS calculators مفتوح المصدر؟

نعم. شيفرته متاحة على GitHub بترخيص MIT.

من يصون 0s and 1s CIS calculators؟

ينشره 0sand1s-uk. يدرجه AI.tn لكنه لا يصونه ولا يوصي به.

من سجل MCP الرسمي. الإدراج ليس توصية: راجع شيفرة الخادم وصلاحياته قبل منحه الوصول إلى بياناتك.