# Trello **URL:** https://community.developer.atlassian.com/c/trello/42.md [Latest](https://community.developer.atlassian.com/latest.md) · [Categories](https://community.developer.atlassian.com/categories.md) · [Tags](https://community.developer.atlassian.com/tags.md) --- ## [About the Trello category](https://community.developer.atlassian.com/t/about-the-trello-category/30223)
**Author:** [@rwhitbeck](https://community.developer.atlassian.com/u/rwhitbeck)\ **Replies:** 1\ **Last updated:** [May 22, 2023, 11:39am UTC](https://community.developer.atlassian.com/t/about-the-trello-category/30223 "2023-05-22T11:39:44Z")
:rocket: Welcome to the Trello category! This is the place for all things Trello :tada:. Whether you’re getting started building your first Trello Power-Up or are a well-versed wizard :mage:t5: when it comes to Trello’s … --- ## [Submit Your Integration: the go.trello.com/dev-support form is a dead link](https://community.developer.atlassian.com/t/submit-your-integration-the-go-trello-com-dev-support-form-is-a-dead-link/103070)
**Author:** [@ChristianRosenbech](https://community.developer.atlassian.com/u/ChristianRosenbech)\ **Replies:** 0\ **Last updated:** [October 2, 2026, 4:37pm UTC](https://community.developer.atlassian.com/t/submit-your-integration-the-go-trello-com-dev-support-form-is-a-dead-link/103070 "2026-10-02T16:37:06Z")
The Submit Your Integration guide says to complete the form at go.trello.com/dev-support. That URL 301s to developer.atlassian.com/support, which has no integration submission form and does not mention Trello at all. … --- ## [Trello MCP connector: add\_comment and add\_member in trelloWriteCard rejected with "Invalid enum value"](https://community.developer.atlassian.com/t/trello-mcp-connector-add-comment-and-add-member-in-trellowritecard-rejected-with-invalid-enum-value/102839)
**Author:** [@AlexanderKleppe](https://community.developer.atlassian.com/u/AlexanderKleppe)\ **Replies:** 1\ **Last updated:** [October 2, 2026, 4:29pm UTC](https://community.developer.atlassian.com/t/trello-mcp-connector-add-comment-and-add-member-in-trellowritecard-rejected-with-invalid-enum-value/102839 "2026-10-02T16:29:08Z")
The Trello MCP connector (connected via Claude) exposes add\_comment and add\_member as documented actions of the trelloWriteCard tool. However, both actions are rejected server-side with an “Invalid enum value” error as s… --- ## [Looking for new owner for Costello Power-Up](https://community.developer.atlassian.com/t/looking-for-new-owner-for-costello-power-up/94567)
**Author:** [@webrender](https://community.developer.atlassian.com/u/webrender)\ **Replies:** 2\ **Last updated:** [September 27, 2026, 8:49pm UTC](https://community.developer.atlassian.com/t/looking-for-new-owner-for-costello-power-up/94567 "2026-09-27T20:49:15Z")
Hi folks, I’m the creator of the Costello power-up. I originally made Costello as one of the original power-ups that launched with the release of the feature in Trello - since then, I now have a 2 year old with a newbor… --- ## [OAuth 2.0 3LO is now available for Trello](https://community.developer.atlassian.com/t/oauth-2-0-3lo-is-now-available-for-trello/102691)
**Author:** [@Brunden](https://community.developer.atlassian.com/u/Brunden)\ **Replies:** 5\ **Last updated:** [September 17, 2026, 7:34pm UTC](https://community.developer.atlassian.com/t/oauth-2-0-3lo-is-now-available-for-trello/102691 "2026-09-17T19:34:01Z")
Last year, we posted RFC-89 introducing OAuth 2.0 three-legged-OAuth(3LO) for Trello (referred to as OAuth 2.0 in this post). The feedback in that thread was detailed and really valuable, and shaped how we’re approaching… --- ## [New Power-Up API key and token consistently return 401 on /1/members/me](https://community.developer.atlassian.com/t/new-power-up-api-key-and-token-consistently-return-401-on-1-members-me/102313)
**Author:** [@LeoRibeiro](https://community.developer.atlassian.com/u/LeoRibeiro)\ **Replies:** 0\ **Last updated:** [August 25, 2026, 4:44pm UTC](https://community.developer.atlassian.com/t/new-power-up-api-key-and-token-consistently-return-401-on-1-members-me/102313 "2026-08-25T16:44:37Z")
Hello, I am trying to integrate a local editorial calendar with Trello through the REST API. Steps taken: Created a new Power-Up in the Power-Up Admin Portal, with a valid HTTPS iframe connector and contact informati… --- ## [What is a list with type="datasource"](https://community.developer.atlassian.com/t/what-is-a-list-with-type-datasource/102159)
**Author:** [@Mattlassian](https://community.developer.atlassian.com/u/Mattlassian)\ **Replies:** 1\ **Last updated:** [August 13, 2026, 3:30pm UTC](https://community.developer.atlassian.com/t/what-is-a-list-with-type-datasource/102159 "2026-08-13T15:30:27Z")
Can’t find any documentation about lists with type “datasource”. An API error I’m getting: Cannot move cards into list with type "datasource" at https://api.trello.com/1/cards/\[redacted\]/idList --- ## [All PowerUp iframes failing](https://community.developer.atlassian.com/t/all-powerup-iframes-failing/101815)
**Author:** [@DEC](https://community.developer.atlassian.com/u/DEC)\ **Replies:** 2\ **Last updated:** [July 28, 2026, 5:51pm UTC](https://community.developer.atlassian.com/t/all-powerup-iframes-failing/101815 "2026-07-28T17:51:08Z")
Calling t.popup() with an args object successfully loads the iframe HTML, but window.TrelloPowerUp.iframe() throws TypeError: t is not iterable from iframe.ts:72. Removing args allows the iframe client to initialize norm… --- ## [Webhooks never fire for the personal Inbox board (board.type="inbox")](https://community.developer.atlassian.com/t/webhooks-never-fire-for-the-personal-inbox-board-board-type-inbox/101244)
**Author:** [@HalitInce](https://community.developer.atlassian.com/u/HalitInce)\ **Replies:** 0\ **Last updated:** [June 14, 2026, 12:34pm UTC](https://community.developer.atlassian.com/t/webhooks-never-fire-for-the-personal-inbox-board-board-type-inbox/101244 "2026-06-14T12:34:07Z")
A webhook registered on the personal Trello Inbox board is created successfully (active=true) but never receives any action events when cards are added to the Inbox. consecutiveFailures stays 0 (Trello never even attempt… --- ## [Filter=open on card endpoints ignores parent list's archived state (inconsistent with UI & Search)](https://community.developer.atlassian.com/t/filter-open-on-card-endpoints-ignores-parent-lists-archived-state-inconsistent-with-ui-search/100997)
**Author:** [@HalitInce](https://community.developer.atlassian.com/u/HalitInce)\ **Replies:** 0\ **Last updated:** [May 29, 2026, 9:27pm UTC](https://community.developer.atlassian.com/t/filter-open-on-card-endpoints-ignores-parent-lists-archived-state-inconsistent-with-ui-search/100997 "2026-05-29T21:27:30Z")
Hi all — we run Voiact (https://voiact.com), an AI assistant that drives Trello over natural language, so we hit a lot of the REST API surface. We ran into a visibility inconsistency around archived LISTS and wanted to f… --- ## [Content security policy](https://community.developer.atlassian.com/t/content-security-policy/100647)
**Author:** [@ernieaschermann](https://community.developer.atlassian.com/u/ernieaschermann)\ **Replies:** 0\ **Last updated:** [May 11, 2026, 2:17pm UTC](https://community.developer.atlassian.com/t/content-security-policy/100647 "2026-05-11T14:17:13Z")
does anyone know what the CSP must be to get a new Powerup to actually work… seems that trial-and-error (mostly error) is the official plan --- ## [Emailing to inbox@app.trello.com Not Showing](https://community.developer.atlassian.com/t/emailing-to-inbox-app-trello-com-not-showing/100548)
**Author:** [@RobBanning](https://community.developer.atlassian.com/u/RobBanning)\ **Replies:** 1\ **Last updated:** [May 4, 2026, 11:32pm UTC](https://community.developer.atlassian.com/t/emailing-to-inbox-app-trello-com-not-showing/100548 "2026-05-04T23:32:42Z")
I am working on a “workflow” application that sends tasks to my Trello Inbox using SendGrid. The to: address is inbox@app.trello.com, and the from: address is the address associated with my account. I have verified tha… --- ## [How to get a member's timezone?](https://community.developer.atlassian.com/t/how-to-get-a-members-timezone/83070)
**Author:** [@JanGebauer](https://community.developer.atlassian.com/u/JanGebauer)\ **Replies:** 2\ **Last updated:** [May 4, 2026, 5:42pm UTC](https://community.developer.atlassian.com/t/how-to-get-a-members-timezone/83070 "2026-05-04T17:42:50Z")
I found one topic, that claimed it’s possible to get it through REST API like so https://api.trello.com/1/members/${member}?key=${appKey}&token=${apiToken} And the documentation agrees https://developer.atlassian.com/… --- ## [How to search cards by keyword and specific date range (e.g., January 2026) in Trello?](https://community.developer.atlassian.com/t/how-to-search-cards-by-keyword-and-specific-date-range-e-g-january-2026-in-trello/100306)
**Author:** [@BilgeCantimur](https://community.developer.atlassian.com/u/BilgeCantimur)\ **Replies:** 0\ **Last updated:** [April 17, 2026, 2:47pm UTC](https://community.developer.atlassian.com/t/how-to-search-cards-by-keyword-and-specific-date-range-e-g-january-2026-in-trello/100306 "2026-04-17T14:47:49Z")
Hello, We use a Trello board with over 289 members. More than 100 cards are created daily on this board. We manage at least 25 different business lines and track all related tasks through it. Sometimes we need to searc… --- ## [Does Trello support individual developers publishing Power-Ups in the market?](https://community.developer.atlassian.com/t/does-trello-support-individual-developers-publishing-power-ups-in-the-market/100277)
**Author:** [@anon16977217](https://community.developer.atlassian.com/u/anon16977217)\ **Replies:** 0\ **Last updated:** [April 16, 2026, 3:31pm UTC](https://community.developer.atlassian.com/t/does-trello-support-individual-developers-publishing-power-ups-in-the-market/100277 "2026-04-16T15:31:16Z")
According to this post: Atlassian does not allow individuals for the Atlassian market, only companies are allowed. Could someone please clarify if it is the same for power-ups in Trello? --- ## [onCancel not working in Confirm Popup](https://community.developer.atlassian.com/t/oncancel-not-working-in-confirm-popup/99812)
**Author:** [@DEC](https://community.developer.atlassian.com/u/DEC)\ **Replies:** 0\ **Last updated:** [March 24, 2026, 4:13am UTC](https://community.developer.atlassian.com/t/oncancel-not-working-in-confirm-popup/99812 "2026-03-24T04:13:42Z")
Create a popup with confirm options, set the on Cancel button to just log a console message. Run your Power-Up, click Cancel. The Cancel button will not work See: const opts = { confirmText: "Confirm", mess… --- ## [API key - hot to get it](https://community.developer.atlassian.com/t/api-key-hot-to-get-it/99612)
**Author:** [@CarolLarson](https://community.developer.atlassian.com/u/CarolLarson)\ **Replies:** 0\ **Last updated:** [March 14, 2026, 6:13am UTC](https://community.developer.atlassian.com/t/api-key-hot-to-get-it/99612 "2026-03-14T06:13:39Z")
I need an api key --- ## [I couldn't find the API key and token in Trello](https://community.developer.atlassian.com/t/i-couldnt-find-the-api-key-and-token-in-trello/99493)
**Author:** [@giginmaryabraham](https://community.developer.atlassian.com/u/giginmaryabraham)\ **Replies:** 0\ **Last updated:** [March 8, 2026, 3:30pm UTC](https://community.developer.atlassian.com/t/i-couldnt-find-the-api-key-and-token-in-trello/99493 "2026-03-08T15:30:30Z")
I couldn’t find the API key and token in Trello, please help me --- ## [Calednar trello](https://community.developer.atlassian.com/t/calednar-trello/99420)
**Author:** [@PiotrZabek](https://community.developer.atlassian.com/u/PiotrZabek)\ **Replies:** 0\ **Last updated:** [March 4, 2026, 10:49am UTC](https://community.developer.atlassian.com/t/calednar-trello/99420 "2026-03-04T10:49:59Z")
Hi I can’t see ma task’s from the card in ma calendar trello. Finally I need to see it in calendar google --- ## [PowerUp Dev Dashboard: Collaborator search returns no results / Collaborators tab unusable](https://community.developer.atlassian.com/t/powerup-dev-dashboard-collaborator-search-returns-no-results-collaborators-tab-unusable/99226)
**Author:** [@Grault](https://community.developer.atlassian.com/u/Grault)\ **Replies:** 0\ **Last updated:** [February 22, 2026, 11:52pm UTC](https://community.developer.atlassian.com/t/powerup-dev-dashboard-collaborator-search-returns-no-results-collaborators-tab-unusable/99226 "2026-02-22T23:52:59Z")
Hi. I’m developing a new Trello PowerUp and I’m unable to add a collaborator (my personal account) from the Dev Dashboard. What I tried Signed into Trello as the PowerUp owner and opened the Dev Dashboard → selected m… --- ## [URGENT: Failure: t.get() fails from t.popup() called from t.modal()](https://community.developer.atlassian.com/t/urgent-failure-t-get-fails-from-t-popup-called-from-t-modal/98724)
**Author:** [@DEC](https://community.developer.atlassian.com/u/DEC)\ **Replies:** 0\ **Last updated:** [January 29, 2026, 1:21am UTC](https://community.developer.atlassian.com/t/urgent-failure-t-get-fails-from-t-popup-called-from-t-modal/98724 "2026-01-29T01:21:14Z")
When inside a t.modal(iframe), and you then call a t.popup(iframe, mouseEvent) almost anything you try to with the the t in that popup() just fails (especially t.get()) - no exception, the JS just stops cold. This has be… --- ## [Callback function of t.authorize not called in desktop app](https://community.developer.atlassian.com/t/callback-function-of-t-authorize-not-called-in-desktop-app/98644)
**Author:** [@Ming](https://community.developer.atlassian.com/u/Ming)\ **Replies:** 0\ **Last updated:** [January 26, 2026, 2:49pm UTC](https://community.developer.atlassian.com/t/callback-function-of-t-authorize-not-called-in-desktop-app/98644 "2026-01-26T14:49:32Z")
Hi, we get a problem when calling t.authorize() in the Trello desktop app. The following code works well in browser, but not in desktop app t.authorize(authUrl, authorizeOpts) .then(function (token) { // unreachab… --- ## [How to implement OAuth with oob](https://community.developer.atlassian.com/t/how-to-implement-oauth-with-oob/98617)
**Author:** [@LMNTRIX](https://community.developer.atlassian.com/u/LMNTRIX)\ **Replies:** 0\ **Last updated:** [January 24, 2026, 7:53pm UTC](https://community.developer.atlassian.com/t/how-to-implement-oauth-with-oob/98617 "2026-01-24T19:53:36Z")
Hey there, hope someone can lend me a hand with this. I am currently implementing a basic OAuth interaction from an app in local development with Trello, i made most of it work, the request token process is done properl… --- ## [Unable to get or find my trello api key. Please guide me How and from where to genertae the api key](https://community.developer.atlassian.com/t/unable-to-get-or-find-my-trello-api-key-please-guide-me-how-and-from-where-to-genertae-the-api-key/88169)
**Author:** [@shravanpottala](https://community.developer.atlassian.com/u/shravanpottala)\ **Replies:** 1\ **Last updated:** [January 24, 2026, 7:41pm UTC](https://community.developer.atlassian.com/t/unable-to-get-or-find-my-trello-api-key-please-guide-me-how-and-from-where-to-genertae-the-api-key/88169 "2026-01-24T19:41:38Z")
Unable to get or find my trello api key. Please guide me How and from where to genertae the api key --- ## [How to implement the authorization using OAuth 1.0](https://community.developer.atlassian.com/t/how-to-implement-the-authorization-using-oauth-1-0/78855)
**Author:** [@AlaaTAHRAOUI](https://community.developer.atlassian.com/u/AlaaTAHRAOUI)\ **Replies:** 1\ **Last updated:** [January 24, 2026, 7:36pm UTC](https://community.developer.atlassian.com/t/how-to-implement-the-authorization-using-oauth-1-0/78855 "2026-01-24T19:36:12Z")
I’m trying to integrate trelloapi with asp .net app, I followed the instruction mentioned in the following link Authorization and I got my access token successfully, but the token was as a fragment in the return\_url (exp… --- ## [What default timezone does Trello send with its REST API?](https://community.developer.atlassian.com/t/what-default-timezone-does-trello-send-with-its-rest-api/57005)
**Author:** [@Nicklaus](https://community.developer.atlassian.com/u/Nicklaus)\ **Replies:** 3\ **Last updated:** [January 21, 2026, 1:19pm UTC](https://community.developer.atlassian.com/t/what-default-timezone-does-trello-send-with-its-rest-api/57005 "2026-01-21T13:19:03Z")
I’m unable to figure out what timezone Trello uses when sending data within their REST API. I don’t believe it is UTC (???). --- ## [Surprising behavior with card-from-url capability](https://community.developer.atlassian.com/t/surprising-behavior-with-card-from-url-capability/98477)
**Author:** [@iangreenleaf](https://community.developer.atlassian.com/u/iangreenleaf)\ **Replies:** 0\ **Last updated:** [January 19, 2026, 3:52am UTC](https://community.developer.atlassian.com/t/surprising-behavior-with-card-from-url-capability/98477 "2026-01-19T03:52:21Z")
I’m looking to use the card-from-url capability in a powerup and I’m a bit mystified by when the UI will and won’t trigger that callback. I am curious if I’m missing or misunderstanding something, or if there’s a way to … --- ## [Trello - Automated download of attachments](https://community.developer.atlassian.com/t/trello-automated-download-of-attachments/98361)
**Author:** [@NisseSterckx](https://community.developer.atlassian.com/u/NisseSterckx)\ **Replies:** 1\ **Last updated:** [January 13, 2026, 2:48pm UTC](https://community.developer.atlassian.com/t/trello-automated-download-of-attachments/98361 "2026-01-13T14:48:06Z")
Dear community, I would like to set up an automation that automatically downloads and saves attachments on a Trello Card and put them in a local folder. Using the api and token, I assumed I was able to get the download… --- ## [Trello authorization is denied even with user consent](https://community.developer.atlassian.com/t/trello-authorization-is-denied-even-with-user-consent/76565)
**Author:** [@FelipeEduardodosSant](https://community.developer.atlassian.com/u/FelipeEduardodosSant)\ **Replies:** 1\ **Last updated:** [January 4, 2026, 9:04am UTC](https://community.developer.atlassian.com/t/trello-authorization-is-denied-even-with-user-consent/76565 "2026-01-04T09:04:06Z")
Hey everyone! When I ask to a user to authorize my application to get his token using t.getRestApi().authorize(), I receive a authDeniedError, even when the user agree with the authorization. The popup closes before the… --- ## [Trello Board button powerup is not working properly](https://community.developer.atlassian.com/t/trello-board-button-powerup-is-not-working-properly/98012)
**Author:** [@BobiGaraga](https://community.developer.atlassian.com/u/BobiGaraga)\ **Replies:** 0\ **Last updated:** [December 23, 2025, 12:04pm UTC](https://community.developer.atlassian.com/t/trello-board-button-powerup-is-not-working-properly/98012 "2025-12-23T12:04:13Z")
Hello Team, I created a trello power up button with index.html and in popup i’m trying to open search.html static file with no content. I deployed the code to aws and created a custom power up with the I frame URL. Boar… [Next page](https://community.developer.atlassian.com/c/trello/42.md?page=1)