Documentation Hub

Developer Guides

Find documentation for TNZ API interfaces, libraries and tools, including the full REST API reference.

Help Centre: Find answers to common questions

Search setup guides, account instructions and practical answers for using TNZ services.

Recent Articles

How to Request a Higher TNZ Credit Limit

Find the TNZ credit limit extension form, check who must complete it, and learn what details you need to request a higher account limit.

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How to Request a Dedicated SMS Number or Sender ID

Request a New Zealand short code, Australian Sender ID or other dedicated number through TNZ. Learn what details you need and how to complete the form.

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Standard vs Verified WhatsApp Business Accounts

Configuring a Verified WhatsApp Business account so that your business name appears first on messages.

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Forms and Administration

Forms for adjusting credit limits, ordering numbers, requesting direct debits, etc.

Latest News: Platform updates and industry news

Q3 2026 Product Updates: What’s New at TNZ

Explore TNZs Q3 2026 product updates, including REST API v3.00, the TNZ MCP Client, new integrations, Dashboard improvements and expanded SMS capabilities.

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REST API v3 and TNZ MCP Client Now Available

Upgrade to TNZ REST API v3.00 for simpler requests, expanded messaging APIs and workflow automation, plus connect AI tools with the TNZ MCP Client.

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NZ 6-Digit SMS Short Codes Are Now Available

New Zealand businesses can now get a dedicated SMS short code from $89/month. Your own number, unlimited keywords, and customers can text you first.

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