Trello Developers

Trello Developer Terms

We’re excited that you’ve chosen to use Trello’s developer platform. Our APIs are designed to allow our developers to build great integrations with the Trello Service. On an approval basis, we also allow certain integrations to be included as Power-Ups within the Trello Service, as described in Section 4 below.

These Trello Developer Terms (the “Terms”) are a binding agreement between you and Trello, Inc. (“we” or “Trello”), and govern your use of APIs and any of your Power-Ups. In these Terms, you are referred to as “you” or “Developer”. If you are entering into these Terms on behalf of a company, organization or another legal entity, then “you” or “Developer” will refer to that entity, and you represent and warrant that you have the authority to bind that entity to these Terms. If you do not have such authority, or if you do not agree with these Terms, you must not accept these Terms, use the APIs or submit any Power-Ups. Trello may modify these Terms from time to time, subject to Section 13 (Changes to Terms) below.

By clicking on “I agree” (or a similar button) or by using or accessing the APIs, you agree to be bound by these Terms.

  1. API Usage.

    a. Introduction. Trello makes available certain application programming interfaces, developer tools and related features (“APIs”) designed to allow developers to connect to and communicate with Trello’s collaboration products and services (“Trello Service”). To use the APIs, you must follow any registration or credentialing requirements established by Trello. You must also follow any documentation or guidelines provided by Trello related to API usage (“API Documentation”). Unless otherwise specified, the term “API” includes the related API Documentation.

    b. Your Use Rights. Subject to these Terms, you may use the APIs to enable your products, services, and add-ons (“Applications”) to access or interface with the Trello Service. All of your use rights in these Terms (including any rights to use Trello Marks below) are limited, non-exclusive, non-sublicenseable and non-transferable, and you may only use the APIs in accordance with the API Documentation. You may permit your agents and contractors to exercise your use rights on your behalf, provided that you remain responsible for their compliance with these Terms.

    c. Trello Rights. Trello may monitor your use of the APIs and, from time to time, may place limits on access to the APIs (e.g., limits on numbers of calls). We may also limit API calls or usage if we believe that your use is in breach of these Terms or may negatively affect the Trello Service or end users.

    d. Restrictions. As conditions on your use rights, you agree not to (and not to authorize any third party to): (a) reverse engineer or extract source code from the APIs or Trello Service, or modify or create any derivative works of the APIs (except to the extent your Applications are deemed derivative works under applicable law); (b) copy, distribute, sell, sublicense, rent or lease the APIs or any access key provided by Trello or use such items for hosting, service provider or like purposes; (c) make any calls to the APIs not driven by a request from an end user of your Application, other than as part of reasonable testing of your Application with the APIs; (d) copy, frame or display any elements of the Trello Service through your Applications or use the APIs with Applications that substantially replicate any features or functionality of the Trello Service, except as expressly authorized by Trello in writing; (e) access the APIs for competitive analysis or disseminate performance information (including uptime, response time and/or benchmarks) relating to the APIs or Trello Service; (f) interfere with or compromise the integrity of the Trello Service, the APIs or our systems (including by probing, scanning or testing their vulnerability), attempt to gain unauthorized access to the Trello Service or end user accounts or data, or circumvent any access or usage limits we impose; (g) sublicense, lease, sell or otherwise transfer any End User Data (as defined below) or derivatives of End User Data to any third party (including to any ad networks, ad exchanges or data brokers) or create or update any databases using End User Data (except for the limited storage of End User Data solely as necessary to provide your Applications where expressly permitted in these Terms); or (h) take any action that would subject the APIs or Trello Service to any third party terms, including without limitation any “open source” software license terms.

  2. Attribution and Use of Marks.

    a. Trello Marks. Subject to these Terms, you may use the appropriate Trello names, logos and trademarks as designated in the Trello Brand Guide (“Trello Marks”) to identify your Applications as compatible with the Trello Service. Your use of Trello Marks must comply with the Trello Brand Guide and (without limiting Trello’s other termination rights) you must promptly cease any use of Trello Marks we identify as problematic. You may not register any domain name containing Trello Marks, the word “Trello” or the name of any Trello Service (or anything confusingly similar) and if you have done so you agree to transfer ownership of the domain name to Trello at no charge. You also agree not to contest the validity of ownership of any Trello Marks. You receive no other rights to Trello Marks under these Terms. All goodwill arising from use of Trello Marks belongs to Trello.

    b. Your Marks. Trello may (but is not obligated to) use your name, logos and other trademarks (including those related to your Applications) (“Your Marks”) to identify you as a Trello developer and to promote your Applications and the Trello Service. Trello receives no other rights to Your Marks under these Terms. All goodwill arising from use of Your Marks belongs to you. These rights (and Trello’s rights in Section 4.c below) are sublicensable through multiple tiers, including Trello’s affiliates, contractors and marketing partners, and may be exercised in connection with the Trello Service, Trello’s API program and in related marketing and promotion, in any form or media.

  3. Your Responsibilities.
    a. Your Applications and End Users. You are solely responsible, at your own expense, for (a) your Applications and their distribution, operation and support and (b) your own relationships and agreements with end users regarding their use of your Applications. As a result of your use of the APIs, an end user may enable you or your Application to access certain of its data, content or information from the Trello Service (“End User Data”). You agree to retrieve, use and store End User Data only to the extent enabled by the end user and as necessary to provide the functionality of your Applications. You will ensure that all End User Data is collected, processed, transmitted, maintained and used in accordance with (i) your agreement with the end user, a legally adequate privacy policy, and appropriate notices to and consents from end users and (ii) all Laws (as defined below).

    b. Security. You must store all End User Data securely, using strong encryption. You may not store or use End User Data except as expressly permitted by the end user. If you store End User Data, you must ensure that the data is kept up-to-date. Subject to any legal data retention requirements, you must delete all End User Data (i) upon the end user’s request, (ii) when the end user closes his or her account with, or otherwise deactivates, your applicable Application and (iii) if Trello terminates your or your applicable Application’s access to the APIs. You must use industry-standard technical, administrative and physical security measures to protect the privacy and security of End User Data. In the event of any security deficiency relating to your Application, or any actual or suspected unauthorized disclosure or use or other compromise or breach of End User Data, you must immediately notify Trello in writing at support@trello.com and work with Trello to remediate the issue and mitigate its effects. You must obtain Trello’s approval for any security breach notifications to end users that refer directly or indirectly to Trello.

    c. Notifications to Trello. You agree to immediately notify Trello (i) if you lose any intellectual property rights in your Application, (ii) if you or your Application become subject to any legal or regulatory investigation, or (iii) if you become aware of any third-party claim regarding any of the foregoing.

    d. Trello Customer Terms. Use of the Trello Service requires each end user to have a valid subscription with Trello subject to the Trello Terms of Service, Trello, Inc. Privacy Policy and/or other applicable terms with Trello (“Trello Terms”). You will not facilitate or encourage any end user to violate the Trello Terms and you, your Applications and your collection, storage, processing and other use of End User Data must be consistent with the Trello Terms. For clarity, if Trello receives any end user data from you or your Applications, it will treat that data under the Trello Terms with the applicable end user, and such data will no longer be subject to your own terms with the end user.

    e. Fees. You may not directly or indirectly charge end users for use of, or access to, the functionality of the Trello Service or APIs. If you choose to charge any fees for your Applications, then you are solely responsible for collecting those fees. You acknowledge that Trello will not collect any fees from end users on your behalf. For clarity, these Terms grant you no right to distribute or resell the Trello Service.

    f. Advertisements. Your Application may contain or display advertisements, but you must not place advertisements within or adjacent to the Trello Service or use (or authorize any third party to use) any End User Data (or other data obtained through the APIs) in advertisements or promotions or to target advertisements or contact users without their express permission.

    g. Your Representations and Warranties. You represent and warrant that (a) you have full power and authority to enter into and perform these Terms and to exploit your Applications without violating any other agreement; (b) your Applications and their use will not violate any third party rights (including intellectual property rights and rights of privacy or publicity) or any laws, rules, regulations or orders, including those relating to data privacy, data transfer, international communications or the export of technical or personal data (“Laws”); (c) your Applications will not contain (or transmit to the Trello Service or end users) any content that is illegal, tortious, defamatory, vulgar, obscene, racist, ethnically insensitive, or invasive of another person’s privacy; content that promotes illegal or harmful activity, or gambling or adult content; any viruses or harmful code; or materials that could harm minors in any way; (d) all information you provide to Trello (including any Power-Up Information under Section 4) is and will be true, accurate, and complete, and if such information is out of date or needs to be modified, you will promptly provide Trello with corrections, updates or modifications; and (e) you will not interfere with Trello’s business practices or the way in which it licenses or distributes the Trello Service or APIs. You may not suggest any affiliation with Trello, including any suggestion that Trello sponsors, endorses or guarantees your Applications, except for the API integration relationship expressly contemplated in these Terms. You may not make any representations, warranties or commitments regarding the APIs or Trello Service or on behalf of Trello.

    h. Indemnification. You will indemnify, defend (at Trello’s request) and hold harmless Trello and its affiliates and their respective directors, officers, employees, agents, contractors, end users and licensees from and against any claims, losses, costs, expenses (including reasonable attorneys’ fees), damages or liabilities based on or arising from (a) your Applications, (b) your relationships or interactions with any end users or third party distributors of your Applications, or (c) your breach or alleged breach of these Terms. Trello may at its own expense participate in the defense and settlement of any claim with its own counsel, and you may not settle a claim without Trello’s prior written consent (not to be unreasonably withheld).

  4. Power-Ups. Trello may list certain Applications or “Power-Ups” in the Trello Service or on our website for easy enablement and use with the Trello Service (“Power-Up Listings”). Current Power-Ups Listings are available here. This Section 4 applies to any Power-Ups or Power-Up Listings, in addition to the other requirements for API usage and your Applications in these Terms.

    a. Approval. Not all Applications are appropriate for Power-Ups, so Trello retains full discretion and approval over whether to include any Power-Up in the Trello Service. If you apply for a Power-Up Listing, we reserve the right to review and test your Applications and use of the APIs for security, performance and other criteria, and you agree to provide us with access to your Applications and other reasonably requested information for our review. To be eligible for a Power-Up Listing, your Application must comply with the Power-Up Guidelines. Trello retains sole discretion and control over the placement, look and feel of any Power-Up Listings and any changes thereto.

    b. Power-Up Information. You will provide Trello with all Power-Up Information in our designated format(s). “Power-Up Information” means any information, product descriptions, icons, Your Marks, Application metadata, and other materials related to your Power-Ups that you provide to us or that we reasonably request.

    c. Trello Rights. If Trello approves your Power-Up Listing, then you hereby grant Trello a worldwide, non-exclusive license (i) to list, promote and market the availability of your Power-Up, and (ii) to use, copy, distribute, publicly perform and display, to create modifications and derivative works of your Power-Up Information, and to create screenshots and excerpts of your Power-Up’s usage with the Trello Service.

    d. Hosting. While we use your Power-Up Information as described above, unless otherwise agreed by the parties in writing, you will directly host and provide end users with your Power-Up (and related Application), and Trello will not operate your Power-Up or receive any of your underlying code.

    e. Your Removals. You can request that we remove your Power-Up Listing from the Trello Service at any time by contacting support@trello.com. We will use commercially reasonable efforts to promptly remove the Power-Up Listing following receipt of your request. You agree to cooperate as requested by Trello regarding end user transition and communications.

    f. End User Support. In addition to your obligations in Section 3.a (Your Applications and End Users), for Power-Ups, you must provide end users with reasonable telephone, web-based and/or email support during normal business hours. You will provide to Trello a current email address to which Trello may direct inquiries from users regarding your Power-Ups. For the avoidance of doubt, Trello has no obligation to provide any end user support for Power-Ups.

    g. Take-Downs. Trello reserves the right to temporary or permanently take-down any Power-Up Listing (and disable any Power-Up) in its discretion. This may include, among other things, take-downs in accordance with our DMCA policy or in circumstances giving rise to a Trello termination or suspension right as described in these Terms.

    h. Your Responsibilities. All of your obligations in Section 3 (Your Responsibilities), including your representations, warranties and indemnities, also apply to your Power-Ups and Power-Up Information to the same extent as they apply to your Applications generally.

  5. Ownership. Trello and its licensors retain all ownership and other rights in the APIs, Trello Service and Trello Marks, including all intellectual property rights. Providing feedback, comments, or suggestions about the APIs or Trello Service (“Feedback”) to Trello is wholly voluntary. By providing Feedback, Developer grants Trello a worldwide, royalty-free, non-exclusive, perpetual and irrevocable license to use, copy, modify, sublicense (through multiple tiers) and otherwise exploit the Feedback (including any ideas, concepts, methods, know-how or techniques embodied in Feedback) for any purpose, without any restriction or obligation to Developer based on intellectual property rights or otherwise. For clarity, nothing in these Terms assigns ownership of your Applications or intellectual property rights to Trello.

  6. Support; Changes to APIs. Trello has no obligation to provide any maintenance or support for the APIs (or to end users of your Applications) or to fix any errors or defects. From time to time, Trello may change the APIs or Trello Service. Future versions of the APIs may not be compatible with your Applications developed using previous versions. Trello typically makes these changes as part of its overall developer program and is unable to provide notice of the changes to developers individually. Trello will have no liability resulting from the actions described in this paragraph.

  7. Termination. These Terms remain in effect until terminated. Subject to Section 4.e (Your Removals) regarding Power-Up Listings, Developer may terminate these Terms at any time by ceasing all use of the APIs and any relevant developer credentials. Trello may terminate these Terms (a) for no reason or any reason upon fifteen (15) days’ notice to Developer or (b) if Developer breaches any provision of these Terms. Trello may also immediately terminate or suspend these Terms, disable your use of the APIs, or remove any Power-Up or Power-Up Listing (i) if Trello is required to do so by Law, (ii) if Trello ceases to offer the APIs, Trello Service or its developer program, (iii) in the event of a security breach or other concern arising under Sections 3.b (Security) or 3.c (Notifications to Trello) above, or (iv) if Trello determines that continuing under these Terms could result in legal or business liability or cause harm to its products, services, reputation or end users. Upon any termination, (1) your rights to use the APIs (including related access keys and credentials) and Trello Marks will immediately terminate and you will cease all such use, (2) you will return or destroy (as requested by Trello) all of Trello’s Confidential Information and (3) Sections 2.b (Your Marks), 3 (Your Responsibilities), 5 (Ownership) and 7 (Termination) through 16 (General) will survive. Developer understands that after termination it will have no further access to any Trello developer website or portal or to any data or content that Developer submitted to Trello relating to the APIs. Trello will have no obligation or liability resulting from termination, suspension, removal or disablement as contemplated in this Section 7 or Section 4.g (Take-Downs).

  8. Disclaimer of Warranties. TO THE FULL EXTENT PERMITTED BY LAW, THE TRELLO APIS, TRELLO SERVICE AND TRELLO MARKS ARE PROVIDED “AS IS” AND “WITH ALL FAULTS” AND TRELLO AND ITS THIRD PARTY LICENSORS DISCLAIM ALL REPRESENTATIONS, WARRANTIES AND GUARANTEES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY, TITLE, NON-INFRINGEMENT AND FITNESS FOR ANY PURPOSE. TRELLO MAKES NO REPRESENTATION, WARRANTY OR GUARANTEE RELATED TO RELIABILITY, ACCURACY, OR COMPLETENESS OF THE TRELLO APIS OR TRELLO SERVICE, THAT TRELLO WILL CONTINUE TO OFFER ANY TRELLO APIS OR ITS DEVELOPER PROGRAM OR THAT USE OF ANY TRELLO APIS OR TRELLO SERVICE WILL BE SECURE, TIMELY, UNINTERRUPTED, ERROR-FREE OR MEET DEVELOPER’S REQUIREMENTS OR EXPECTATIONS. IN ADDITION, THE TRELLO APIS AND TRELLO SERVICE ARE NOT DESIGNED OR PERMITTED FOR USE IN HAZARDOUS ENVIRONMENTS REQUIRING FAIL-SAFE CONTROLS, INCLUDING OPERATION OF NUCLEAR FACILITIES, AIRCRAFT NAVIGATION OR CONTROL SYSTEMS, AIR TRAFFIC CONTROL, OR LIFE SUPPORT OR WEAPONS SYSTEMS. You may have other statutory rights, in which case the disclaimers above will apply to the full extent permitted by law.

  9. Limitations of Liability. TO THE FULL EXTENT PERMITTED BY LAW, IN NO EVENT WILL TRELLO BE LIABLE (A) FOR ANY LOSS OF USE, LOST DATA, FAILURE OF SECURITY MECHANISMS, INTERRUPTION OF BUSINESS, OR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES OF ANY KIND (INCLUDING LOST PROFITS OR LOST DATA), REGARDLESS OF THE FORM OF ACTION, WHETHER IN CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF INFORMED OF THE POSSIBILITY OF SUCH DAMAGES IN ADVANCE OR (B) IN ANY EVENT, FOR ANY DAMAGES OR LIABILITIES EXCEEDING ONE HUNDRED U.S. DOLLARS ($100). NOTWITHSTANDING ANYTHING TO THE CONTRARY, TRELLO HAS NO WARRANTY, INDEMNIFICATION OR OTHER OBLIGATION OR LIABILITY WITH RESPECT TO YOUR APPLICATIONS OR THEIR COMBINATION, INTERACTION, OR USE WITH ANY TRELLO SERVICE OR TRELLO APIS. Developer acknowledges and agrees that this Section 9 reflects a reasonable allocation of risk and that Trello would not enter into these Terms without these liability limitations. This Section 9 will survive notwithstanding any limited remedy’s failure of essential purpose.

  10. Trello Confidential Information. All information disclosed by Trello that is marked as confidential or proprietary or that you should reasonably understand to be confidential or proprietary is “Confidential Information.” Confidential Information includes the APIs, any API keys, and non-public aspects of the Trello Service. Confidential Information shall not include any information that: (i) is or becomes generally known to the public; (ii) was known to you before its disclosure hereunder; or (iii) is received from a third party, in each case without breach of an obligation owed to Trello or anyone else. You shall (a) maintain Confidential Information in confidence (using at least the same measures as for your own confidential information, and no less than reasonable care) and not divulge it to any third party and (b) only use Confidential Information to fulfill your obligations under these Terms. If you are compelled by law to disclose Confidential Information, you must provide Trello with prior notice of such compelled disclosure (to the extent legally permitted) and reasonable assistance if Trello wishes to contest the disclosure. In the event of actual or threatened breach of this Section 10, Trello shall have the right, in addition to any other remedies available to it, to seek injunctive relief to protect its Confidential Information, it being specifically acknowledged by the parties that other available remedies may be inadequate.

  11. Independent Development; Information You Provide Not Confidential. You understand and agree that Trello develops its own products and services and works with many other vendors and developers, and either Trello or these third parties could in the future develop (or already have developed) products similar to yours. You should not provide to Trello any information that you consider confidential and you agree that Trello is not subject to any confidentiality obligations or use restrictions related to information that you may provide to Trello in relation to these Terms. You expressly agree that nothing in these Terms limits Trello’s right to develop or have developed for it products, concepts, systems or techniques that are similar to or compete with any your Applications or any other products, concepts, systems or techniques contemplated by or embodied in information you disclose to Trello. For clarity, however, this paragraph, in itself, does not grant Trello any license under your intellectual property rights.

  12. Usage Data. In addition to Trello’s other rights, Trello may collect certain data and information regarding your use of the APIs, including data about your API requests, your Applications, your Power-Ups, and the end user accounts that you access (“Usage Data”). We may use and exploit Usage Data for any purpose in connection with operating, improving and supporting the APIs and our products and services.

  13. Changes to Terms. Trello may modify these Terms from time to time. Trello will use reasonable efforts to notify you of modifications as provided in Section 14 (Notices). You may be required to click through the modified Terms to show your acceptance and in any event your continued use of any APIs after the modification constitutes your acceptance to the modifications. If you do not agree to the modified Terms, your sole remedy is to terminate your use of the APIs as described in Section 7 (Termination).

  14. Notices. Trello may provide you with notices and communications at your email or physical address on file, through or website, or other reasonable emails. Any notices or communications to Trello must be sent to support@trello.com or Trello, Inc., 55 Broadway, 25th Floor, New York NY 10006.

  15. Export. The APIs may be subject to export restrictions by the United States government and import restrictions by certain foreign governments, and you agree to comply with all applicable export and import laws and regulations in your use of the APIs. You represent and warrant that you are not located in a country subject to a U.S. Government embargo, or that has been designated by the U.S. Government as a “terrorist supporting” country, and that you are not listed on any U.S. Government list of prohibited or restricted parties.

  16. General. These Terms are the parties’ entire agreement and supersede any prior or contemporaneous agreements relating to its subject matter. For clarity, if you use the Trello Service as a customer, that usage remains subject to the Trello Terms. Except as set forth in Section 13 (Changes to Terms), all amendments or modifications must be in writing and signed by both parties. The words “including” and similar terms are to be construed without limitation. Failure to enforce any provision is not a waiver and all waivers must be in writing. If any provision is found to be unenforceable it (and related provisions) will be interpreted to best accomplish its intended purpose. Developer may not assign, transfer or delegate any right or obligations under these Terms and any non-permitted assignment is void. Trello may assign these Terms and its rights and obligations to any of its affiliates or in connection with a merger, reorganization, acquisition or other transfer of all or substantially all of its assets or voting securities to which these Terms relate. The parties are independent contractors and these Terms do not create any agency, partnership, or joint venture. The Terms shall be governed by and construed under the laws of the State of New York, USA, as applied to agreements entered into and to be performed in New York by New York residents. The parties consent to the exclusive jurisdiction and venue of the courts located in and serving the Borough of Manhattan, in the City of New York, in the State of New York, USA. Trello will not be liable to Developer for any delay or failure to perform any obligation under these Terms if the delay or failure is due to unforeseen events that are beyond its reasonable control. The APIs and Trello Service are commercial computer software. If the user or licensee of such technology is an agency, department, or other entity of the United States Government, the use, duplication, reproduction, release, modification, disclosure, or transfer of such technology, or any related documentation of any kind, including technical data and manuals, is restricted by these Terms in accordance with Federal Acquisition Regulation 12.212 for civilian purposes and Defense Federal Acquisition Regulation Supplement 227.7202 for military purposes. The APIs and Trello Service were developed fully at private expense. All other use is prohibited.