How can I get a list of all labels used in one or more lists on a board?

jhewgley July 23, 2023

I would like to be able to get a unique list of all the labels that are used on the cards in a list or perhaps across several specified lists. I have some javascript that will do this but it is kind of clunky because I have to paste it into the Developer Tools console and run it from there. This is something I need to do every day.  Is there a cleaner way to do this?  


Here is my use case: 

Every day, I review cards across multiple lists on one board and move the cards I need to address in the current day to a single list for the day.  All off my cards have labels indicating the project they belong to or an activity label such as "email" or "phone."  Once I have the cards for the day moved to the list of todos for the day, I want to generate a unique list of the labels used on those cards so I can then go and schedule a timebox on my calendar for each label.  I then address the cards throughout the day according to the calendar timebox indicated by their labels. I've found that timeboxing my activities helps me get a lot more done. 

1 answer

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Oliver S
Atlassian Team
Atlassian Team members are employees working across the company in a wide variety of roles.
July 24, 2023

Hi jhewgley,

There is an API Endpoint you could use to get all labels used on a board (so at the board level):

Another way to approach this would be to think about whether the information you need could be gathered using a Scheduled Automation, part of Trello's built in automation features.

For example, you could create something like:

"Everyday at 8am, create a report in variable 'labelsUsed', filter all cards that have the blue label and yellow label, and send an email notification to with the cards in 'labelsUsed'.


Screenshot 2023-07-25 at 1.32.07 pm.png

This would send an email through to the specified address with cards matching the filters you've set. You would likely need to adjust / tailor it to your specific needs, but this could help as a starting point to take the manual work out of it. :)

jhewgley July 25, 2023

Thanks for the suggestion of using scheduled automation. I will look into that and see if I can get it to provide me a list of labels for a particular list. 


I am also updating my original question above to better describe my use case.  

Oliver S
Atlassian Team
Atlassian Team members are employees working across the company in a wide variety of roles.
July 25, 2023

No worries! :) Based on your updated description, I tested a very simple example where I looked for all cards that had a yellow label assigned and generated an email report:

Screenshot 2023-07-26 at 11.15.38 am.png


Here's how it looks in Automation:

Screenshot 2023-07-26 at 11.17.55 am.png

You'll notice in this example I make use of the "using pattern". This allows you to draw upon Automation variables to choose how the information displays in the email report. You'll notice there are quite a lot of different fields you can use to format the report:

Keen to hear how you get along! :)

jhewgley July 25, 2023

Thanks for continuing to help me find a solution. Your latest example makes good use of automation variables but it still doesn't produce a unique list of labels (label names). If there was a {listlabelnames} automation variable, I bet it would give me what I want. But there is no such automation variable (documented). 

Essentially what I want is a unique list of label names that are used on a given list. 

The icing on the cake would be able to get a unique list of label names used across one or more lists on a board (but not all lists on the board!).  The following JavaScript, when run from the console in the browser's developer tools, produces what I need across the 3 specified lists on my board. It is just very clunky to execute that way.  What would be amazing would be if Trello had the ability to save javascript snippets with a board and be able to execute with a custom list action. Since you can't do that (I don't think), I'm looking for another way to generate what I need. 


Oliver S
Atlassian Team
Atlassian Team members are employees working across the company in a wide variety of roles.
July 26, 2023

Appreciate the additional context and feedback!

Makes more sense what you're trying to do, and sounds like based on the way you're currently achieving it - it could be a lot simpler.

I've gone ahead and filed a feature request to provide this additional level of detail through an additional variable or through a custom list action. While I can't promise an ETA, I have passed on your feedback to the team.

One other thing I should note - in the more recent example above, the labels I used didn't actually have a name to them - just coloured labels. You might be able to adjust it a bit - as there is a filter you can use for a specific list. That said, I realise it may still be a bit limited for what you're after.

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