Integration guides
Step-by-step guides for connecting Vacation Tracker to payroll, HRIS and AI assistants with the REST API, MCP and Zapier, and which tool to use for each job.
Each guide starts from a job, such as "show everyone's remaining vacation days in our payroll tool", and walks through it end to end. Most jobs can be done with more than one of our tools, so every guide starts by comparing them:
| Tool | Best for | You need |
|---|---|---|
| REST API v2 | Custom logic. Automate how Vacation Tracker talks to your other systems for the whole team or a group of people, or build AI agents on top of Vacation Tracker. | Someone to write and run the code |
| MCP server | Your own AI assistant (Claude, ChatGPT, Gemini or any other) doing things for you: take actions or pull reports faster, and combine Vacation Tracker data with your other tools. | An AI client that supports MCP |
| Zapier | The same kind of automation as the API, for teams that don't want to write and own custom code. It has fewer features than the API for now. | A Zapier account |
| Vee | Everyone on your team asking about and requesting their own leave in plain language, in the Vacation Tracker dashboard, Slack, Microsoft Teams or the mobile app. | Nothing to set up |
All four are available on every paid plan. Vee is on by default, and administrators can turn it off for the company.
Read leave balances
Get the remaining days of one person or the whole company, and understand every number in the response.
Request and manage leave
Create, edit, approve, deny and cancel leave, including on behalf of other people.
Send approved leave to an HRIS or payroll system
Load existing leave once, then keep the other system up to date with webhooks.
Sync leave balances with an HRIS or payroll system
Keep one source of truth for balances, send them where they are needed, and catch edits in the wrong place.
Keep users in sync with an HRIS
Match employees to users and keep locations, departments, labels and quotas up to date.
Need a guide for something else, or have questions? Email us at developers@vacationtracker.io and tell us what you want to build.
Vacation Tracker Developer Documentation
OAuth2 authorization, REST API reference, Zapier integration, and MCP server guides for Vacation Tracker.
How to read leave balances
Get PTO and leave balances for one person or the whole company from Vacation Tracker with the REST API, MCP or a scheduled report, and what each number means.