NZ Data API MCP Server

by workers-zakwins-nzdata Your server? Claim it

answering

NZ Data API is answering right now. Last checked 5 min ago. It exposes 8 tools.

New Zealand public holidays, working-day deadlines, IRD/NZBN/bank checks, GST. Pay per call via x402

Uptime history 8 days of history

8 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

116 ms

Response time

average over 24h

open, no key

Access

streamable-http

Nothing serious here today

Today is the operative word: we check NZ Data API every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 5 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add nz-data-api --transport http https://nzdata.zakwins.workers.dev/mcp

Settings → Connectors → Add custom connector, then paste this address

https://nzdata.zakwins.workers.dev/mcp

~/.codex/config.toml

[mcp_servers.nz-data-api]
url = "https://nzdata.zakwins.workers.dev/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "nz-data-api": {
      "url": "https://nzdata.zakwins.workers.dev/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "nz-data-api": {
      "type": "http",
      "url": "https://nzdata.zakwins.workers.dev/mcp"
    }
  }
}

Available tools 8

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

validate

nz_validate_bank

Validate an NZ bank account number check digit (IRD algorithms A-G/X), normalise BB-bbbb-AAAAAAA-SSS and identify the bank code. Paid tool: $0.001 USDC on Base per call via x402 (an unpaid call returns PaymentRequired; retry with _meta["x402/payment"]). Example args: {"number":"01-0902-0068389-00"}

nz_validate_ird

Validate NZ IRD/GST number check digit. Paid tool: $0.001 USDC on Base per call via x402 (an unpaid call returns PaymentRequired; retry with _meta["x402/payment"]). Example args: {"number":"49091850"}

nz_validate_nzbn

Validate NZBN (GTIN-13) check digit. Paid tool: $0.001 USDC on Base per call via x402 (an unpaid call returns PaymentRequired; retry with _meta["x402/payment"]). Example args: {"number":"9429041535134"}

nz_validate_phone

Validate and normalise an NZ phone number to E.164 with type. Paid tool: $0.001 USDC on Base per call via x402 (an unpaid call returns PaymentRequired; retry with _meta["x402/payment"]). Example args: {"number":"021 123 4567"}

working

nz_working_days

Count NZ working days between two dates inclusive (weekends, public holidays, optional statutory Christmas shutdown presets oia|lgoima|building_act|rta). Paid tool: $0.002 USDC on Base per call via x402 (an unpaid call returns PaymentRequired; retry with _meta["x402/payment"]). Example args: {"start":"2026-10-01","end":"2026-10-31","region":"","preset":"none"}

nz_working_days_add

Add N NZ working days to a date (e.g. OIA 20 working-day deadline). Paid tool: $0.002 USDC on Base per call via x402 (an unpaid call returns PaymentRequired; retry with _meta["x402/payment"]). Example args: {"start":"2026-12-15","days":"20","preset":"oia"}

gst

nz_gst

NZ GST 15% calculator (exclusive or inclusive). Paid tool: $0.001 USDC on Base per call via x402 (an unpaid call returns PaymentRequired; retry with _meta["x402/payment"]). Example args: {"amount":"115","mode":"inclusive"}

holidays

nz_holidays

NZ public holidays 2022-2030 incl. Matariki, Mondayisation and optional regional anniversary day. Paid tool: $0.002 USDC on Base per call via x402 (an unpaid call returns PaymentRequired; retry with _meta["x402/payment"]). Example args: {"year":"2026","region":"auckland"}

Endpoints

URL	Transport	State	Latency	Checked
https://nzdata.zakwins.workers.dev/mcp	streamable-http	answering	93 ms	5 min ago

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NZ Data API — questions

Answers built from our own checks of this server.

What can NZ Data API do?

It exposes 8 tools, read directly from the server on our last check. Among them: nz_gst, nz_holidays, nz_validate_bank, nz_validate_ird, nz_validate_nzbn, nz_validate_phone and 2 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

What is NZ Data API mostly used for?

Its tools cluster around validate and working. That is what this server is built to work with — the grouping comes from the actual tool names, not from a category we assigned.

Is NZ Data API working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 116 ms. The bar chart above shows every period we have measured.

How do I connect NZ Data API?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does NZ Data API need an API key?

No. NZ Data API completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 8 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is NZ Data API?

It answers our handshake in 116 ms on average, which is faster than 95% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.