How to Get Your Rezdy API Key (and What to Build With It)

How Rezdy API access works, what the Rezdy API lets you connect, and when you need a developer to do it properly. Perth, Melbourne, Sydney and Brisbane.

Best for: Tour, activity and experience operators Practical guide for business decision-makers

Who this is for

Tour, activity and experience operators who want to connect Rezdy to other systems and need to understand how its API works before committing to anything.

Question this answers

How do I get Rezdy API access and what can I actually connect Rezdy to?

What you'll leave with

  • How Rezdy authenticates API access
  • What data the Rezdy API exposes
  • Whether no-code tools cover your use case
  • What a proper Rezdy API integration involves
  • When you need a developer and when you do not

How Rezdy API access works

Rezdy uses an API key issued from your Rezdy account, sent with each request. The exact screens move around as Rezdy updates its interface, so rather than repeat a menu path that may already be out of date, the reliable source is the official documentation: Rezdy API documentation.

Rezdy distinguishes between supplier and agent API access. Which one you hold determines what the key can see, and it is a common source of confusion.

Treat API credentials like a password. Anyone holding them can read and often write data in your Rezdy account. Do not paste them into untrusted tools, and do not send them over email or chat.

What the Rezdy API lets you do

The Rezdy API gives you programmatic access to the core data in your account. Broadly that covers:

  • Products, sessions and availability
  • Bookings, customers and participants
  • Pricing options and extras
  • Vouchers and gift cards
  • Agents, resellers and commissions

With that access you can push data into accounting or reporting systems, keep records in step across tools, and build dashboards from live Rezdy data rather than from exports someone has to remember to run.

Rezdy and no-code tools

Zapier support for Rezdy is limited. Zapier coverage is limited, so most Rezdy integrations use the API directly. That is why searches for connecting Rezdy through no-code tools tend to turn up workarounds rather than a clean answer.

Building with the Rezdy API

Connecting Rezdy to another system means working through five things, in roughly this order:

  1. Authenticate using the credentials above, and store them somewhere your team can rotate
  2. Map the data, deciding what moves between Rezdy and the other system, in which direction, and triggered by what
  3. Handle the edge cases, such as a record that already exists on one side but not the other, or a partially completed transaction
  4. Build error handling, so a failed call is retried or surfaced rather than silently dropped
  5. Set up monitoring, so you find out something stopped working before it becomes an accounting problem

A common pairing is Rezdy with Xero or MYOB. Read-only reporting is usually straightforward. Live two-way sync is where the mapping and error handling turn it into a proper development project.

When to bring in a developer

Some Rezdy API work is genuinely straightforward. Some is not. An honest split:

Booking tasks you can manage yourself

  • Exporting bookings for a report
  • Alerting on a new booking
  • Reading availability into a display
  • Confirming your product and session structure

Rezdy work that calls for a specialist

  • Bookings into accounting

    Deposits, balances and agent commissions all need separating before anything reconciles.

  • Availability across channels

    Selling the same seat twice is the failure mode when availability is not single-sourced.

  • Agent and reseller commission

    Net versus gross treatment changes both the invoice and the revenue figure.

  • Cancellations and refunds

    Partial refunds and credits are where booking-to-ledger integrations usually break.

These integrations look simple from the outside. The work is in the detail: field mapping, conflict resolution, error recovery, and keeping everything in step as both Rezdy and the connected system change over time.

If the integration touches invoicing, stock or payroll, getting it wrong has real financial consequences. A properly built integration with monitoring and alerting is worth the upfront cost.

Key takeaways

  • Rezdy uses an API key issued from your Rezdy account, sent with each request
  • The API covers products, bookings, pricing options and extras and more
  • Zapier coverage is limited, so the API is usually the right route
  • Simple read-only use cases are achievable without specialist help
  • Two-way sync with accounting or payroll is a development project, not a weekend task
RezdyAPI IntegrationIntegrations

Meet the person

Written by the person who does the work

This guide comes from real projects. If it raises a question about your own system, you can ask the founder directly.

HELLO PEOPLE designs, builds and looks after AI, software, app and data solutions for Australian businesses, with senior expertise on every project and a scope agreed before work starts. For an integration, that means every record lands where it should and both systems agree.

Since 2007, HELLO PEOPLE has delivered more than 100 projects from Perth for small and medium businesses across Australia: custom software and apps, system integrations, data migrations, reporting and dashboards, and AI that works inside the systems a business already runs.

I lead every engagement myself. I trained in accounting before moving into IT, hold accounting and IT professional qualifications and an MBA, and bring more than 20 years of experience across sales, service delivery, inventory and compliance. I am also a PhD candidate in AI at Curtin University, researching retrieval-augmented generation (RAG), so the technology is always judged by what it does for the business.

  • An old-fashioned service

    Small and boutique. The person who scopes your integration is the person who builds it, and the same person watches the first live syncs.

  • Quick responses

    No ticket queue and no account manager in between. You hear back within one business day, usually sooner.

  • A long-term partner

    The integration is the start, not the end. When you need the next system, integration or report, you call the same person, who already knows your business.

Ask the author

Question about the Rezdy API?

Ask it here and it comes straight to Kasun, who wrote this. No sales call, no obligation, and a real answer even if the answer is that you do not need us.

Kasun Wijayamanna, Founder Kasun Wijayamanna
Founder, replies within one business day

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