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How to find out List IDs? The JSON trick isn't working anymore

When adding .json to the end of the URL, I just get the 404 page. How do I find out the list IDs?

3 answers

1 accepted

1 vote
Answer accepted

@Stamina Overlook 

It can happen when you do not have access to the card/board.

 Update : self correction - you get a 401 instead.

@Stamina Overlook No issue get the board. Looks like it is a Public board


You are correct that with the full url and a .json it gets a 404


Screen Shot 2022-01-19 at 12.56.20 PM.jpg

Ahhhh, so I needed to take the name of the board out of the URL! Now it's all working, thank you so much :)

Like Laura Holton likes this

An easier way, if you have generated a key and token for using the REST API, is to query the Get Lists on a Board endpoint:{board_id}/lists?key={your_key}&token={your_token}

Example JSON response:

  "id": "602786e91c69d30e45a9ccdb",
  "name": "Backlog",
  "closed": false,
  "pos": 512,
  "softLimit": null,
  "idBoard": "602786e91c69d30e45a9ccd8",
  "subscribed": false
  "id": "60541af09b1c4353c8a3b29b",
  "name": "Due in 4 days",
  "closed": false,
  "pos": 1024,
  "softLimit": null,
  "idBoard": "602786e91c69d30e45a9ccd8",
 "subscribed": false

0 votes
Laura Holton Community Leader Jan 18, 2022

Hi @Stamina Overlook 👋

Welcome to the Community! You should be able to get it via JSON:

  1. Go to your Trello Board
  2. Add ".json" to end of the URL
  3. Format the JSON so it's readable (you can find a JSON viewer online)
  4. Search for idBoard - this will list your full Board ID

URL should look like this:<name of board>.json

You'll also find the list IDs in there under idList.

Option 2:

I dropped ".json" at the end of address in firefox and a pretty nice looking json display was rendered and the first item was "id", which worked for me.

I filtered "idBoard" and the only result was a "idBoardSouce" which was null. Maybe the "idBoard" has since changed to "id".

I hope this helps but if you have any other questions just ask away 😃

All the best,


Hello! Yes, I tried these methods, but like I said, adding .json to the end of the URL just sends me to the error 404 page. There's no JSON there - and nothing in the source, either. The source of the resulting page is just the source of the 404 page, with no hidden list IDs or anything.

Here, a screenshot that proves it:image_2022-01-18_133945.png

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