How to Use Monitor in Postman for Automated API Testing
In Postman, you use
Monitor to schedule and automate running your API collections at set intervals. You create a monitor by selecting a collection, setting the environment and schedule, then Postman runs the tests automatically and shows results in reports.Syntax
The basic steps to use a Monitor in Postman are:
- Select Collection: Choose the API collection you want to monitor.
- Set Environment: Pick an environment with variables if needed.
- Schedule: Define how often the monitor runs (e.g., every hour, daily).
- Notifications: Optionally set email alerts for failures.
Each monitor runs the collection’s requests and tests automatically based on the schedule.
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Monitor Setup Steps: 1. Go to Postman app or web. 2. Click 'Monitors' tab. 3. Click 'Create a monitor'. 4. Select your collection. 5. Choose environment (optional). 6. Set schedule (e.g., every 1 hour). 7. Save and start monitor.
Example
This example shows how to create a monitor for a collection named My API Tests that runs every day at 9 AM UTC and uses the Development environment.
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1. Open Postman and go to 'Monitors'. 2. Click 'Create a monitor'. 3. Name it 'Daily API Test Monitor'. 4. Select collection: 'My API Tests'. 5. Select environment: 'Development'. 6. Set schedule: Daily at 09:00 UTC. 7. Enable email notifications for failures. 8. Click 'Create Monitor'.
Output
Monitor 'Daily API Test Monitor' created.
It will run 'My API Tests' collection daily at 9 AM UTC.
Email alerts will be sent on test failures.
Common Pitfalls
- Not selecting an environment: If your requests use variables, missing environment causes failures.
- Incorrect schedule time zone: Monitor times are in UTC; forgetting this can cause confusion.
- Ignoring test failures: Not setting notifications means you may miss when tests fail.
- Large collections: Running very large collections frequently can hit rate limits or slow results.
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Wrong way: - Create monitor without environment when variables are used. Right way: - Always select the correct environment matching your variables.
Quick Reference
| Step | Description |
|---|---|
| Select Collection | Choose the API collection to run |
| Choose Environment | Pick environment with variables if needed |
| Set Schedule | Define how often the monitor runs (hourly, daily, etc.) |
| Configure Notifications | Set email alerts for failures |
| Create Monitor | Save and start automated runs |
Key Takeaways
Use Postman Monitor to automate running API tests on a schedule.
Always select the correct environment to avoid variable errors.
Set notifications to get alerts on test failures.
Monitor schedules use UTC time zone; plan accordingly.
Keep collections optimized to avoid slow or failed runs.