Published: September 14, 2026 | Effective for existing accounts: September 29, 2026
These Terms of Service (the “Terms”) are a binding contract for services between you and StackBlitz, Inc. (“Stackblitz”, “Licensor”, “we”, “us”, or “our”) for your use of the products and services Stackblitz makes available through www.StackBlitz.com, www.Bolt.new, and related properties (the “Sites,” as further defined in Section 1.3), including StackBlitz, Bolt, and the developer tools described in Section 1.5. By accepting these Terms, or by accessing or using the Services after they become effective for you, you agree to these Terms. Your use of the Services is also governed by our Privacy Policy, available at https://stackblitz.com/privacy-policy, which describes how we collect, use, and share personal information and how you may exercise your privacy rights. These Terms apply to all Services, whether you use StackBlitz, Bolt, or both.
Transition for Existing and New Accounts. For an account created before September 14, 2026, these Terms take effect on September 29, 2026. For an account created on or after September 14, 2026, these Terms take effect when you accept them. When these Terms take effect for you, they replace the StackBlitz Terms of Service last updated January 10, 2024.
Separate Written Agreements. If you or your organization has a separate written agreement with Stackblitz that governs any Services (including an enterprise agreement, order form, or data processing addendum), that agreement controls to the extent of any conflict, and these Terms apply only to the extent not addressed by that agreement. Nothing in these Terms or the Acceptable Use Policy supersedes or amends such an agreement except as expressly provided in it.
The Terms contain, among other things, warranty disclaimers, liability limitations and use limitations. Please contact us at legal@stackblitz.com with any issues or notices related to the Terms.
If you do not agree to these Terms, do not accept them and stop using the Services before they become effective for you.
Subject to your compliance with the Terms, Stackblitz will provide the Services (as defined in Section 1.3) via the Sites. The Services may include a non-exclusive, non-transferable, worldwide license to access certain Site Content fully subject to the terms of these Terms. Stackblitz may modify the Services and these Terms of Service at its sole discretion at any time. If we make material changes to these Terms, we will provide at least fifteen (15) days’ advance notice by email to the address associated with your account or within the Services before the changes take effect, except where a shorter period is required to comply with law or to address a security or legal risk. Your continued use of the Services after updated Terms become effective constitutes your acceptance of them; if you do not agree, you must stop using the Services. This paragraph also governs when material changes to the Acceptable Use Policy and other policies incorporated into these Terms become effective.
To the extent Services consist of access to the integrated development environment (“IDE”) offered by Stackblitz, use and access to the IDE is provided via a non-exclusive, non-transferable, worldwide license. We do not provide you with the equipment to use or access the IDE, and you are responsible for ensuring your access.
We reserve the right to modify or discontinue, temporarily or permanently, all or any portion of the Sites and our Services without notice. We will not be liable to you or to any third party for any modification, suspension, or discontinuance of all or any portion of the Sites or our Services.
We also reserve the right to reject, refuse to post, or remove any material that you post or submit for posting on the Sites, and to restrict, suspend, or terminate your access to our Sites or Services at any time, for any reason (including, but not limited to, our sole determination that you violated any provision of these Terms), or for no reason, with or without prior notice, and without liability. Upon termination for any reason or no reason, you continue to be bound by these Terms. Except where these Terms or applicable law require otherwise, if Stackblitz terminates or suspends your access to the Services other than for cause, Stackblitz will, for a period of thirty (30) days following the effective date of such termination or suspension, make available to you a reasonable means to retrieve or export your User Content, after which Stackblitz may delete your User Content. Notwithstanding the foregoing, Stackblitz may suspend, disable, or delete your account and User Content immediately and without providing any export or retention period where Stackblitz reasonably believes that you have violated Section 2 of these Terms or the Acceptable Use Policy, where retention of or continued access to your User Content would violate applicable law or these Terms, or where immediate action is reasonably necessary to protect the Services, Stackblitz, other users, or any third party from harm or liability. Stackblitz is under no obligation to retain your User Content beyond the periods described above, and you are solely responsible for maintaining your own independent backups of your User Content.
“Licensor Marks” means Licensor’s proprietary trademarks, trade names, branding, or logos made available for use pursuant to these Terms.
“Services” means all products and services Stackblitz makes available through the Sites, including the StackBlitz browser-based development environment, Bolt (the AI-powered application builder), application hosting (including bolt.host), the StackBlitz SDK and embeddable editor, the WebContainer API, and any related tools, APIs, and features.
“Sites” mean stackblitz.com and bolt.new, together with any related Stackblitz websites, subdomains, and hosting properties through which the Services are made available, including bolt.host and webcontainers.io.
“Site Content” means all material, data, information, products and product features published on the Sites and IDE and accessible to you.
“User Content” means content you created, uploaded, or stored through the Services. User Content includes AI Input and AI Output and corresponds to “Your Content” as that term is used in the Acceptable Use Policy.
“AI Features” means the features of the Services that use artificial intelligence to generate or suggest code, text, applications, websites, or other output.
“AI Input” means prompts, code, files, and other content you submit to the AI Features.
“AI Output” means code, text, applications, websites, or other output generated by the AI Features in response to your AI Input.
“Bolt Model Development Content” means (i) AI Input you submit through Bolt; (ii) AI Output generated through Bolt; (iii) related interaction data generated in connection with your use of Bolt AI Features, including error messages, correction or fix traces, tool invocations, and edit histories; and (iv) project files, code, and configuration to the extent submitted to or processed by Bolt AI Features. Bolt Model Development Content is determined by the Bolt AI Features through which the content is submitted or processed, regardless of the artificial-intelligence model, mode, or inference provider used to generate or process it. Content used solely through stackblitz.com or other non-Bolt Services, including the StackBlitz SDK and embeddable editor and the WebContainer API, is not Bolt Model Development Content and is not used for the purposes described in Section 3.5. If you use a project created or stored through StackBlitz with Bolt, only content submitted to or processed by Bolt AI Features, together with related Bolt interaction data, is Bolt Model Development Content.
“Restricted Region Account” means an account that Stackblitz determines, based on billing address, account country, network location, and other information available to it, is located in the European Economic Area, the United Kingdom, or Switzerland. Where Stackblitz cannot determine an account’s location, it treats the account as a Restricted Region Account for purposes of Sections 3.5 and 3.6.
“Pricing Page” means the pricing pages for the Services located at https://stackblitz.com/pricing and https://bolt.new/pricing, as updated by Stackblitz from time to time.
Stackblitz offers the Services under free and paid subscription plans, with the plans, prices, features, usage allotments, and limits for each product described on the Pricing Page, which is incorporated into these Terms by this reference. Stackblitz may change its plans and prices from time to time; price changes apply prospectively and, for existing paid subscriptions, take effect at the start of the next billing period following at least fifteen (15) days’ prior notice given in accordance with Section 1.1. Bolt Forge, a lower-priced mode of the AI Features available on eligible Bolt plans (optional on plans that include other AI modes, and the only AI mode on the Bolt Lite plan), is described on the Pricing Page and is subject to the Bolt Forge Supplemental Terms in Section 3.6.
Use of the AI Features is metered in tokens. Each plan includes the token allotment described on the Pricing Page, and free plans are subject to daily and monthly token limits. Tokens are consumed based on the processing performed by the AI Features, regardless of whether the resulting AI Output is satisfactory to you or must be regenerated, and consumed tokens are non-refundable except where applicable law requires otherwise. Unused tokens on paid plans roll over only as described on the Pricing Page, and an active paid subscription is required to access rolled-over tokens. Additional tokens may be available for purchase as described on the Pricing Page.
Paid subscriptions renew automatically for successive billing periods until cancelled. Payments are processed by our third-party payment processor, and you authorize recurring charges to your selected payment method. You may cancel at any time through your account settings, with cancellation effective at the end of the then-current billing period. Except as required by applicable law, fees are non-refundable, and no refunds or credits are provided for partial billing periods, unused or expired tokens, or downgrades. Fees are exclusive of taxes, levies, and duties, which you are responsible for paying, excluding taxes based on Stackblitz’s income.
Nothing in this Section 1.4 or these Terms limits any non-waivable rights you may have under applicable consumer protection laws, including any statutory withdrawal, cancellation, or refund rights available to consumers in your jurisdiction.
(a) Hyperlinks. Anyone may link to the Sites or to a public project on the Services, provided the link does not misrepresent your relationship with Stackblitz or use Licensor Marks except as permitted by Stackblitz’s brand guidelines.
(b) SDK and Embedding. Subject to these Terms and the applicable developer documentation (currently at developer.stackblitz.com), Stackblitz grants you a non-exclusive, non-transferable, revocable license to integrate the StackBlitz SDK and to embed the StackBlitz editor in your own websites and applications, on the plans and within the usage limits identified on the Pricing Page or in the developer documentation.
(c) WebContainer API. Use of the WebContainer API is subject to the license tiers, session limits, and other usage limits stated in the developer documentation (currently at webcontainers.io) and on the Pricing Page. Use in a production or commercial setting, or beyond the stated limits, requires an active plan or separate written license that includes it; contact hello@stackblitz.com to discuss licensing.
(d) Duration; Documentation. The rights in this Section 1.5 continue only while the applicable plan or license is active and terminate automatically when it expires or is terminated. The usage limits and technical requirements stated in the developer documentation are incorporated into these Terms, and Stackblitz may update them in accordance with Section 1.1.
If provided a login and password, your login and password are unique to you and you may not share them with anyone else. Your account is personal to you and is licensed for use by a single, named individual user only. You may not share, sell, rent, lease, lend, sublicense, transfer, assign, or otherwise make your account available to, or permit it to be accessed or used by, any other person, and you may not allow more than one individual to access or use the Services under a single account. You may not use account sharing, credential sharing, concurrent logins, or any other means to circumvent or exceed any per-user, per-seat, usage, rate, or other limits applicable to the Services. Each individual who accesses or uses the Services must register for and use a separate account. Moreover, you are responsible for maintaining the confidentiality of any information you upload to the Sites or via the Services, and you are fully responsible for all activities that occur under your account. You agree to immediately notify Stackblitz by email at support@stackblitz.com of any unauthorized use of any such information or any other breach of security. Failure to comply with this section may result in immediate termination of access to the Sites and Services.
You shall use the Services in compliance with all applicable laws and regulations, including without limitation those related to data privacy, international communications, export, and the transmission of technical or personal data, consumer and child protection, obscenity or defamation.
You agree that you shall not (and shall not knowingly permit any third party to), directly or indirectly: (i) reverse engineer, decompile, disassemble, or otherwise attempt to discover the source code, object code, or underlying structure, ideas, or algorithms of the Services (except to the extent applicable laws specifically prohibit such restriction); (ii) modify, translate, or create derivative works based on the Services; (iii) copy, rent, lease, distribute, pledge, assign, or otherwise transfer or encumber rights to the Services; (iv) use the Services for the benefit of an unauthorized third party; (v) remove or otherwise alter any proprietary notices or labels from the Services, or any portion thereof; or (vi) use the Services to build an application, product or service that is competitive with any Stackblitz product or service.
You agree that you shall not (and shall not knowingly permit any third party to) take any action (including uploading, downloading, posting, submitting or otherwise distributing or facilitating distribution of any material through the Services) that: (i) infringes any patent, trademark, trade secret, copyright, right of publicity or other right of any other person or entity; (ii) is unlawful, threatening, abusive, harassing, defamatory, libelous, deceptive, fraudulent, invasive of another’s privacy, tortious, obscene, offensive, or profane; (iii) constitutes unauthorized or unsolicited advertising, junk or bulk e-mail (iv) contains software viruses or any other computer codes, files, or programs that are designed or intended to disrupt, damage, limit or interfere with the proper function of any software, hardware, or telecommunications equipment or to damage or obtain unauthorized access to any system, data, password or other information of Stackblitz or any third party; or (v) impersonates any person or entity, including any employee or representative of Stackblitz.
You also agree that you shall not: (i) interfere or attempt to interfere with the proper working of the Services or any activities conducted in connection with the Services; or (ii) bypass any measures Stackblitz may use to prevent or restrict access to the Services (or other accounts, computer systems or networks connected to the Services).
Your access to and use of the Services is also subject to Stackblitz’s Acceptable Use Policy, available at https://stackblitz.com/acceptable-use-policy (the “Acceptable Use Policy” or “AUP”), which is incorporated into and forms a part of these Terms by this reference. The Acceptable Use Policy describes the content and conduct that is prohibited on or through the Services, including any artificial intelligence, code-generation, and application-hosting features. By accessing or using the Services, you represent that you have read the Acceptable Use Policy and agree to comply with it. Stackblitz may update the Acceptable Use Policy from time to time in accordance with Section 1.1, and your continued use of the Services after an updated Acceptable Use Policy becomes effective constitutes your acceptance of it.
Any violation of the Acceptable Use Policy constitutes a material breach of these Terms and may result in the immediate suspension or termination of your account in accordance with Section 1.2, without any export or retention period and without liability or refund. In the event of any conflict between the Acceptable Use Policy and these Terms with respect to permitted or prohibited use of the Services, the more restrictive provision shall control.
You must be at least eighteen (18) years old, or the age of majority in your jurisdiction if higher, to access or use the Services. The Services are not directed to, and may not be used by, anyone under eighteen (18), and Stackblitz does not knowingly collect personal information from anyone under eighteen (18); if Stackblitz learns that a user does not meet the requirements of this Section 2.5, Stackblitz will terminate that user’s account and delete the associated personal information as required by applicable law. By accessing or using the Services, you represent and warrant that you meet these requirements.
As between the parties, Stackblitz retains all intellectual property rights relating to the Services and Site Content. If you provide suggestions, ideas, enhancement requests, feedback, or recommendations relating to the Services (“Feedback”), you grant Stackblitz a perpetual, irrevocable, worldwide, royalty-free, sublicensable license to use and exploit the Feedback for any purpose, without attribution or compensation to you.
The Sites, Services and Site Content are protected by copyright, trademarks, database rights and other intellectual property rights. Use of the Sites or Services does not confer any ownership rights in any Stackblitz Intellectual property.
As between you and Stackblitz, you retain all right, title, and interest in and to your User Content. You grant Stackblitz a worldwide, non-exclusive, royalty-free license to host, store, reproduce, modify, process, transmit, display, and distribute your User Content (including AI Input) solely as necessary to provide, maintain, secure, troubleshoot, and operate the Services; to detect, investigate, and prevent fraud, abuse, security incidents, and violations of these Terms or the Acceptable Use Policy; to perform quality assurance on individual interactions; to comply with applicable law; and to enforce these Terms and the Acceptable Use Policy. For clarity, the license in this Section 3.2 does not authorize Stackblitz to use User Content to train, fine-tune, improve, or benchmark artificial-intelligence models, or to prepare datasets for licensing to third parties. Those uses, if applicable, are governed exclusively by Section 3.5 and the Privacy Policy. You represent and warrant that you have all rights, licenses, and permissions necessary to submit your AI Input and other User Content and to grant the license in this Section 3.2.
To the extent permitted by applicable law, and subject to your compliance with these Terms, Stackblitz assigns to you all of its right, title, and interest, if any, in and to the AI Output generated for you through the Services. This assignment is subject to (a) any third-party rights in the underlying artificial-intelligence models, training data, or outputs, and (b) the rights of other users. You acknowledge that, due to the nature of machine learning, the Services may generate the same or similar output for other users, and nothing in these Terms restricts any rights of other users in output independently generated for them. You further acknowledge that AI Output may not be protectable by copyright or other intellectual property rights, and Stackblitz makes no representation or warranty regarding the ownership, registrability, validity, or non-infringement of any AI Output. The assignment in this Section 3.3 is subject to any license that applies under Section 3.5 in accordance with that Section; except for the licenses granted in Section 3.2 and, where applicable, Section 3.5, Stackblitz claims no rights in your AI Output.
AI Output is generated by machine-learning systems and may be inaccurate, incomplete, insecure, outdated, or infringing of third-party rights. AI Output is provided for your convenience only, does not constitute professional, legal, medical, financial, or other advice, and is not a substitute for human review. You are solely responsible for reviewing, testing, and validating all AI Output before using, deploying, distributing, or otherwise relying on it, including for errors, security vulnerabilities, and open-source and other license compliance, and you must not rely on AI Output without appropriate human review in high-risk or sensitive contexts, including medical, legal, financial, employment, or safety-critical uses, as further described in the Acceptable Use Policy.
(a) AI Model Development License. Unless and until you opt out as described in Section 3.5(c), and subject to Sections 3.5(d)-(f), you grant Stackblitz a worldwide, non-exclusive, royalty-free, sublicensable, and transferable license to use, reproduce, process, adapt, modify, and create derivative works of your Bolt Model Development Content that is eligible under Section 3.5(d) to train, fine-tune, evaluate, benchmark, and improve artificial-intelligence models developed by or for Stackblitz. This license is separate from the operational license in Section 3.2 and applies only to the model-development uses described in this Section 3.5(a). If you enable Bolt Forge, this license also applies to Forge Content as provided in Section 3.6. The licenses in Sections 3.5(a) and 3.5(b) apply notwithstanding any confidentiality or non-use obligation that might otherwise apply to Bolt Model Development Content under these Terms or any other Stackblitz policy, subject to Section 3.5(h) and any separate written agreement that controls under these Terms.
(b) Dataset Licensing; De-Identification and Anonymization. Unless and until you opt out as described in Section 3.5(c), and subject to Sections 3.5(d)-(f), you grant Stackblitz a worldwide, non-exclusive, royalty-free, sublicensable, and transferable license to prepare, market, license, and distribute datasets derived from Bolt Model Development Content that is eligible under Section 3.5(d) to third parties, including for compensation (which some laws may characterize as a “sale”), for artificial-intelligence research and for the development, training, evaluation, and improvement of artificial-intelligence models. If you enable Bolt Forge, this license also applies to Forge Content as provided in Section 3.6. Before any Bolt Model Development Content that is eligible under Section 3.5(d) is included in a licensed dataset, Stackblitz will remove or transform information that could reasonably be used to identify an individual and will maintain the resulting data in de-identified form. Stackblitz will not attempt to re-identify de-identified data, except as permitted by applicable law solely to test the effectiveness of its de-identification processes. For personal data subject to the GDPR or UK GDPR, Stackblitz will treat data as anonymous only where it meets the applicable standard for anonymization; data that remains pseudonymized remains personal data. Stackblitz will not disclose Bolt Model Development Content to dataset licensees in a form that reasonably identifies an individual and will contractually prohibit recipients from attempting to re-identify the data and from onward disclosure except subject to equivalent restrictions.
(c) Opt-Out; Withdrawal. Except as provided in Section 3.6 with respect to Forge Content while Bolt Forge is enabled, you may opt out of the uses described in Sections 3.5(a) and 3.5(b) at any time, free of charge and regardless of your plan, through your account settings or by contacting privacy@stackblitz.com. Upon receipt of an opt-out request, Stackblitz will promptly place the account on a suppression list designed to prevent the selection of that account’s Bolt Model Development Content for new model-training runs or new licensed datasets while the request is being processed. Stackblitz will complete implementation of the opt-out across applicable systems as soon as reasonably practicable and in any event within fifteen (15) days after receipt of your request. After the opt-out is effective, Stackblitz will not use your Bolt Model Development Content for new model development under Section 3.5(a) or include it in datasets newly licensed under Section 3.5(b). An opt-out or withdrawal does not, by itself, unwind processing completed before the request, models already trained, or datasets already delivered to licensees, but nothing in this Section limits any right or remedy available under applicable law or any action Stackblitz is required to take under applicable law. This Section does not limit the operational license in Section 3.2. No opt-out is required for a Restricted Region Account; see Section 3.5(e).
(d) Timing and Prospective Application. Stackblitz will describe the uses permitted by this Section 3.5, and the means of opting out, prominently in Bolt and in your account settings. Only Bolt Model Development Content created or generated on or after September 14, 2026 is eligible for the uses described in Sections 3.5(a) and 3.5(b), and Stackblitz will not use eligible content for those purposes before September 29, 2026. Content created or generated before September 14, 2026 is not eligible, even if it remains stored in your account or project or is later opened, accessed, submitted to, retrieved by, or otherwise processed by Bolt AI Features. For project files, code, and configuration that existed before September 14, 2026, only new versions, edits, or other content created or generated on or after September 14, 2026 are eligible. If Stackblitz cannot reasonably distinguish eligible content from earlier ineligible content, Stackblitz will exclude the affected content from the uses described in Sections 3.5(a) and 3.5(b). Content used solely through StackBlitz or other non-Bolt Services remains outside this Section 3.5. Nothing in this Section 3.5(d) limits the operational license in Section 3.2.
(e) European Economic Area, United Kingdom, and Switzerland. Stackblitz does not use Bolt Model Development Content associated with a Restricted Region Account, including Forge Content, for the purposes described in Section 3.5(a) or Section 3.5(b). The licenses in Sections 3.5(a) and 3.5(b) are not granted by, and Section 3.5(i) does not apply to, a Restricted Region Account. Whether an account is a Restricted Region Account is evaluated each time Bolt Model Development Content is selected for those purposes; Bolt Model Development Content selected while an account was not a Restricted Region Account may remain in use. If you believe Stackblitz has located your account incorrectly, contact privacy@stackblitz.com. Stackblitz will not extend the uses described in this Section 3.5 to Restricted Region Accounts without amending these Terms with the notice described in Section 1.1 and establishing a lawful basis under applicable law. An account holder’s consent or contractual grant does not by itself establish a lawful basis to process personal data relating to another individual where applicable law requires a separate basis. In any other jurisdiction where applicable law requires your consent for a use described in this Section 3.5, Stackblitz will engage in that use only after obtaining it. This Section 3.5(e) does not limit Stackblitz’s use of your content to provide, secure, and support the Services as described in Section 3.2 and the Privacy Policy.
(f) Sensitive and Third-Party Personal Data. Stackblitz will not intentionally select for the uses described in Sections 3.5(a) or 3.5(b) Bolt Model Development Content that it has identified as containing special-category or sensitive personal data, or personal data relating to a child below the applicable minimum age, unless applicable law permits the processing and any additional legal condition required for that data has been satisfied. Stackblitz may use technical and organizational measures designed to identify and exclude such content. You represent and warrant that you have all rights, licenses, and permissions necessary to grant the license in this Section 3.5 for your Bolt Model Development Content and agree not to submit third-party confidential information or personal information that you are not authorized to provide for these purposes.
(g) Privacy. Stackblitz’s collection, use, disclosure, de-identification, anonymization, and handling of data-subject rights in connection with this Section 3.5 are described in the Privacy Policy, which controls over this Section to the extent of any conflict concerning personal information.
(h) Excluded Accounts. This Section 3.5 does not apply to: (i) Bolt Model Development Content in accounts governed by a separate written agreement with Stackblitz that addresses the uses described in this Section, in which case that agreement controls; (ii) organization-managed accounts, except to the extent the organization’s administrator has enabled such uses and Stackblitz has provided any notice and choices required by applicable law; or (iii) Restricted Region Accounts, as provided in Section 3.5(e).
(i) Exercise of Rights. The licenses granted in this Section 3.5 take effect when these Terms take effect for you and are not conditioned on Stackblitz exercising them at any particular time. Whether and when Stackblitz exercises any use described in this Section 3.5 may vary, and Stackblitz may commence, pause, or resume any such use at any time, subject to Sections 3.5(c) through 3.5(h), and never with respect to a Restricted Region Account. Commencing or resuming a use described in this Section 3.5 is not a modification of these Terms and does not require the notice described in Section 1.1.
(a) Overview; Eligibility. Bolt Forge (“Forge”) is a mode of the AI Features (optional on plans that include other AI modes, and the only AI mode on the Bolt Lite plan) that generates AI Output using open-weight artificial-intelligence models hosted by Stackblitz or by one or more third-party inference providers, and that is offered at the reduced pricing described on the Pricing Page. Forge is available only to account holders on the eligible Bolt plans identified on the Pricing Page who have enabled Forge as described in Section 3.6(c). On a plan in which Forge is the only AI mode, the AI Features are not available unless you have enabled Forge, and declining or withdrawing consent under Section 3.6(d) means the AI Features are not available on that plan until you change plan. Forge is not available for accounts described in Section 3.5(h)(i) or 3.5(h)(ii); Restricted Region Accounts are addressed in Section 3.6(h). This Section 3.6 (the “Forge Supplemental Terms”) supplements the remainder of these Terms and, in the event of any conflict concerning Forge Content, controls over Section 3.5.
(b) Forge Content. “Forge Content” means (i) AI Input you submit to, and AI Output generated by, the AI Features while Forge is enabled for your account or the applicable project; (ii) interaction data generated in connection with those sessions, including error messages, correction and fix sequences, tool invocations, and edit histories; and (iii) the project files, code, and configuration in any project in which Forge is used, to the extent processed by Forge. Bolt Model Development Content that is not Forge Content is governed by Section 3.5, including your right to opt out under Section 3.5(c). User Content that is neither Forge Content nor Bolt Model Development Content remains governed by Section 3.2 and is not used for the model-development or dataset-licensing purposes described in Section 3.5.
(c) Enabling Forge; Express Consent. You enable Forge only by taking an affirmative action in the Services (such as clicking “Use Forge and consent to data use”) after being presented with a summary of, and a link to, these Forge Supplemental Terms. Forge Content is subject to the timing and eligibility limitations in Section 3.5(d), in addition to the affirmative-consent requirements in this Section 3.6. By enabling Forge you: (i) accept these Forge Supplemental Terms; (ii) grant Stackblitz the licenses in Sections 3.5(a) and 3.5(b) with respect to Forge Content that is eligible under Section 3.5(d), and expressly agree that Stackblitz may prepare de-identified datasets derived from Forge Content and license them to third parties, including for compensation (which some laws may characterize as a “sale”), for the development, training, and evaluation of artificial-intelligence models, including open-weight models; (iii) to the extent your consent is required by applicable law (including the GDPR or UK GDPR), consent to that processing; and (iv) acknowledge that the uses of Forge Content described in this Section 3.6 are a condition of Forge and are the basis on which Forge is offered at reduced pricing. Stackblitz will present the consent described in Section 3.6(c)(iii) in a statement that is separate from, and clearly distinguishable from, your acceptance of the other provisions of these Forge Supplemental Terms, and the affirmative action by which you enable Forge will state that it constitutes that consent. Stackblitz will record the date, time, and version of the Forge Supplemental Terms you accepted. Stackblitz does not request the consent described in this Section 3.6(c) from a Restricted Region Account; see Section 3.6(h).
(d) No Opt-Out While Forge Is Enabled; Stopping Use of Forge; Withdrawal of Consent. Because the uses described in Section 3.6(c) are a condition of Forge, the opt-out in Section 3.5(c) does not apply to Forge Content submitted or generated while Forge is enabled, and an opt-out under Section 3.5(c) does not prevent you from enabling Forge. You may stop using Forge at any time: on a plan that includes other AI modes, by switching to another agent or mode; on a plan in which Forge is the only AI mode, by changing to another plan (including a free plan). Stopping use of Forge ends the collection of new Forge Content but does not by itself withdraw your consent, and Stackblitz may continue to use Forge Content collected while Forge was enabled for the purposes described in Section 3.6(c) until you withdraw that consent. You may withdraw your consent at any time, free of charge, by contacting privacy@stackblitz.com or, once available, through the consent control in your account settings. Stackblitz will implement a withdrawal in the manner described in Section 3.5(c) for opt-outs, and after withdrawal Stackblitz will not select your Forge Content for new model-training runs or newly prepared or licensed datasets under this Section 3.6. Forge cannot be used on an account that has withdrawn consent unless you consent again under Section 3.6(c). Content submitted or generated after you stop using Forge is governed by Section 3.5 if it qualifies as Bolt Model Development Content, including your opt-out rights under Section 3.5(c). Neither stopping use of Forge nor withdrawing consent unwinds processing completed before that time, models already trained, or datasets already delivered to licensees, except as required by applicable law. Withdrawal of consent does not affect the lawfulness of processing carried out before withdrawal. After you stop using Forge, the standard AI Features and pricing of your plan (or of the plan you select) described on the Pricing Page apply prospectively from that date.
(e) Models and Inference Providers; Performance. Forge uses open-weight models selected by Stackblitz, and the specific models and inference providers used may change from time to time as new models become available. AI Input processed through Forge may be transmitted to third-party inference providers solely to generate AI Output, as described in the Privacy Policy. Open-weight models may perform differently from, and in some cases less capably than, the models available in other modes of the Services, and Stackblitz makes no representation that Forge will produce results equivalent to those modes. Sections 3.3, 3.4, and 4 apply fully to Forge and to AI Output generated through Forge. Stackblitz may modify, suspend, or discontinue Forge, or change Forge eligibility or pricing, in accordance with Sections 1.1, 1.2, and 1.4.
(f) Safeguards. Sections 3.5(b) (de-identification, anonymization, and licensee restrictions), 3.5(f) (sensitive and third-party personal data), and 3.5(g) (Privacy) apply to Forge Content. You represent and warrant that you have all rights, licenses, and permissions necessary to grant the licenses and consents in this Section 3.6 for your Forge Content, and you agree not to use Forge to process third-party confidential information, personal data of others, or other content that you are not authorized to make available for the uses described in this Section 3.6.
(g) Fees. Forge pricing is described on the Pricing Page, and Section 1.4 applies to Forge. Forge pricing is available only while Forge is enabled and these Forge Supplemental Terms are accepted; if you stop using Forge or withdraw your consent, or Stackblitz discontinues Forge, the standard pricing of your plan (or of the plan you select) applies prospectively from that date, and Stackblitz will not charge you retroactively for any period during which Forge was enabled.
(h) Restricted Region Accounts. Bolt Forge is available to Restricted Region Accounts, but Forge Content associated with a Restricted Region Account is not used for the purposes described in Section 3.6(c), Stackblitz does not request consent from a Restricted Region Account, and Sections 3.6(c)(ii) through 3.6(c)(iv), 3.6(d), and 3.6(f) (as to the licenses and consents in this Section 3.6) do not apply to it. The price of Bolt Forge, and of any plan on which Bolt Forge is the only AI mode, is not conditioned on any use of Forge Content from a Restricted Region Account. Section 3.6(e) applies to all accounts.
Each party represents and warrants to the other that: (a) it has full power and authority to grant rights or undertake obligations related to these Terms, (b) it has no outstanding obligations that conflict with these Terms, and (c) these Terms constitute a valid and legally binding obligation on that party that is enforceable in accordance with the terms of these Terms.
While Stackblitz endeavors to ensure that the information contained on the Sites is current, correct and complete, the Sites, Services and Site Content are provided “as is” and with no warranty, express or implied, given as to its currency, accuracy and completeness or that any specific results will be achieved.
The Services may display, link to, or allow you to install third-party products, services, packages, dependencies, and content, including content published by other users (“Third-Party Content”). Stackblitz does not control Third-Party Content, does not endorse it, and is not responsible for its accuracy, legality, security, or performance. Your use of Third-Party Content is at your own risk and subject to any terms that accompany it.
EXCEPT TO THE EXTENT REQUIRED BY LAW, STACKBLITZ DISCLAIMS ANY AND ALL EXPRESS OR IMPLIED WARRANTIES AND CONDITIONS INCLUDING, WITHOUT LIMITATION, WARRANTIES AND CONDITIONS AS TO MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. STACKBLITZ DOES NOT WARRANT THAT THE SITES, SERVICES OR SITE CONTENT (AS APPLICABLE) WILL BE UNINTERRUPTED OR ERROR FREE, THAT DEFECTS WILL BE CORRECTED OR THAT THE SITES, SERVICES OR SITE CONTENT (AS APPLICABLE) IS FREE OF VIRUSES OR OTHER HARMFUL COMPONENTS. WITHOUT LIMITING THE FOREGOING, STACKBLITZ MAKES NO WARRANTY THAT ANY AI OUTPUT WILL BE ACCURATE, COMPLETE, SECURE, RELIABLE, OR NON-INFRINGING, AND YOU ASSUME ALL RISK ARISING FROM YOUR USE OF OR RELIANCE ON ANY AI OUTPUT.
You agree to defend, indemnify, and hold harmless Stackblitz, its successors and assigns, and other third parties who contribute to the Sites from any loss, damage, or cost (including attorneys’ fees) resulting from your violation of the Terms.
To the fullest extent permitted by applicable law, and subject to the last paragraph of this Section 6, Stackblitz disclaims all responsibility and assumes no liability for your use of any Site Content or Services made available to you free of charge, regardless of purpose.
TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, AND SUBJECT TO THE LAST PARAGRAPH OF THIS SECTION 6: Stackblitz’s aggregate monetary liability to you for any reason and for any and all causes of action, whether in contract, tort, or otherwise, will not exceed the greater of $100 or the amount that you have paid to Stackblitz for the Services during the twelve (12) month period before the cause of action accrued. Stackblitz will not be liable to you under any cause of action, whether in contract, tort, or otherwise, for any indirect, special, incidental, consequential, or punitive damages, even if Stackblitz has been advised of the possibility of such damages. The limitations in this Section 6 apply to Stackblitz’s affiliates, licensors, suppliers, and service providers to the same extent as they apply to Stackblitz.
Nothing in these Terms excludes or limits either party’s liability for (a) death or personal injury caused by its negligence; (b) fraud or fraudulent misrepresentation; (c) willful misconduct; or (d) any other liability that cannot be excluded or limited under applicable law. If you are a consumer in the European Economic Area, the United Kingdom, or another jurisdiction whose mandatory law does not permit one or more of the limitations in this Section 6, those limitations apply to you only to the extent permitted by that law, and nothing in this Section 6 affects your non-waivable statutory rights as a consumer, including any right to a remedy for Services that do not conform to the contract.
Stackblitz respects the intellectual property rights of others and expects users of the Services to do the same. This Section 7 describes our policy and procedures for notices of claimed copyright infringement under the Digital Millennium Copyright Act, 17 U.S.C. § 512 (the “DMCA”), and is the “Copyright/DMCA Policy” referenced in the Acceptable Use Policy.
If you believe that content made available on or through the Services infringes your copyright, you may submit a written notification to our designated agent that includes: (a) a physical or electronic signature of the copyright owner or a person authorized to act on the owner’s behalf; (b) identification of the copyrighted work claimed to have been infringed (or, if multiple works are covered by a single notification, a representative list of such works); (c) identification of the material claimed to be infringing and information reasonably sufficient to permit us to locate the material (such as a URL); (d) your name, address, telephone number, and email address; (e) a statement that you have a good-faith belief that use of the material in the manner complained of is not authorized by the copyright owner, its agent, or the law; and (f) a statement that the information in the notification is accurate and, under penalty of perjury, that you are authorized to act on behalf of the copyright owner.
Notices should be sent to our designated agent: StackBlitz, Inc., Attn: DMCA Agent, 1160 Battery Street, Suite 30W, San Francisco, CA 94111; telephone: 206.588.5981; email: dmca@stackblitz.com. Upon receipt of a compliant notice, we will act expeditiously to remove or disable access to the material claimed to be infringing and will take reasonable steps to notify the user who posted it.
If material you posted was removed or disabled and you believe the removal was the result of mistake or misidentification, you may submit a written counter-notification to our designated agent that includes: (a) your physical or electronic signature; (b) identification of the material that was removed or disabled and the location at which it appeared before removal; (c) a statement, under penalty of perjury, that you have a good-faith belief the material was removed or disabled as a result of mistake or misidentification; and (d) your name, address, and telephone number, and a statement that you consent to the jurisdiction of the federal district court for the judicial district in which your address is located (or, if outside the United States, the Northern District of California) and that you will accept service of process from the person who provided the original notification or that person’s agent. Unless the original claimant files an action seeking a court order against you, we may restore the removed material in not less than ten (10) and not more than fourteen (14) business days after receipt of a compliant counter-notification.
Stackblitz will, in appropriate circumstances, terminate the accounts of users who are determined to be repeat infringers, and reserves the right to remove content, suspend access, or terminate accounts in response to any single instance of infringement.
Under 17 U.S.C. § 512(f), any person who knowingly materially misrepresents that material is infringing, or that material was removed or disabled by mistake or misidentification, may be liable for damages, including costs and attorneys’ fees.
Subject to Section 8.2(h) and any non-waivable law applicable to you, these Terms and any dispute or claim arising out of or relating to these Terms or the Services (including non-contractual disputes or claims) shall be governed by the laws of the State of California without regard to its conflict of laws provisions, except that the Federal Arbitration Act governs the interpretation and enforcement of Section 8.2.
PLEASE READ THIS SECTION CAREFULLY — IT REQUIRES THAT MOST DISPUTES BE RESOLVED THROUGH BINDING INDIVIDUAL ARBITRATION AND WAIVES THE RIGHT TO A JURY TRIAL AND TO PARTICIPATE IN A CLASS ACTION. (a) Informal Resolution. Before initiating arbitration, the party asserting a dispute must send the other an individualized written notice describing the dispute and the relief sought (to Stackblitz: legal@stackblitz.com or the notice address in Section 8.8), and the parties will attempt in good faith to resolve the dispute within sixty (60) days; this Section 8.2(a) is a condition precedent to arbitration. (b) Arbitration. Except as provided in Section 8.2(d), any dispute arising out of or relating to these Terms or the Services will be finally resolved by binding arbitration administered by JAMS under its rules then in effect, including, where applicable, the JAMS Consumer Arbitration Minimum Standards. The arbitration will be conducted by a single arbitrator, in English, and may proceed by videoconference or, if an in-person hearing is required, in San Francisco, California or the county of your residence, at your election. Payment of filing, case-management, and arbitrator fees will be governed by the applicable JAMS rules and consumer standards. The arbitrator has exclusive authority to resolve any dispute relating to the interpretation, applicability, or enforceability of this arbitration agreement, and judgment on the award may be entered in any court of competent jurisdiction. (c) Class Action Waiver. Each party may bring claims against the other only in an individual capacity, and not as a plaintiff or class member in any purported class, collective, consolidated, or representative proceeding, and the arbitrator may not consolidate more than one person’s claims. If the waiver in this Section 8.2(c) is held unenforceable as to a particular claim, that claim (and only that claim) shall proceed in court under Section 8.3 and the remainder of this Section 8.2 shall remain in effect. (d) Exceptions. Either party may (i) bring an individual claim in small claims court, and (ii) seek injunctive or other equitable relief in a court of competent jurisdiction to protect its intellectual property rights or to address unauthorized access to the Services. (e) Mass Filings. If twenty-five (25) or more demands for arbitration presenting similar claims and represented by the same or coordinated counsel are filed against a party, the demands will be administered in accordance with the JAMS Mass Arbitration Procedures and Guidelines then in effect (or any successor procedures adopted by JAMS), to the extent consistent with the JAMS Consumer Arbitration Minimum Standards and applicable law, and the applicable JAMS mass-arbitration fee schedule will govern fees for those demands. Nothing in this Section 8.2(e) delays the filing or commencement of any demand, tolls or defers payment of any fee that applicable law requires a party to pay, requires mediation or any other step as a condition of proceeding with any demand, or limits the authority of JAMS or the arbitrator under the applicable rules. (f) Opt-Out. You may opt out of this arbitration agreement and class action waiver by emailing legal@stackblitz.com within thirty (30) days after first accepting these Terms (or, if your account predates the effective date of this Section 8.2, within thirty (30) days after that effective date), stating your name, the email associated with your account, and your intent to opt out; opting out will not affect any other provision of these Terms. (g) Jury Waiver. To the extent any dispute proceeds in court, each party waives, to the fullest extent permitted by law, any right to a trial by jury. (h) Consumers Outside the United States. If you are a consumer in the European Economic Area, the United Kingdom, or another jurisdiction whose mandatory law provides otherwise, nothing in this Section 8.2 deprives you of the protection of the mandatory consumer laws of your country of residence, including any right to bring proceedings in the courts of that country, and to the extent those laws do not permit pre-dispute arbitration agreements or class action waivers for consumers, Sections 8.2(b) and 8.2(c) do not apply to you.
Subject to Section 8.2(h) and any non-waivable venue rights applicable to you, for any dispute that is not subject to arbitration under Section 8.2 (including if you have validly opted out), the federal and state courts sitting in San Francisco, California, U.S.A. will have exclusive jurisdiction and venue, and each party consents to personal jurisdiction in those courts, except that either party may bring an eligible individual claim in small claims court.
If any provision of these Terms is found to be unenforceable or invalid, that provision will be limited or eliminated to the minimum extent necessary so that these Terms will otherwise remain in full force and effect and enforceable, except as provided in Section 8.2(c) with respect to the class action waiver.
These Terms are not assignable, transferable or sublicensable by either party except with the other’s prior written consent, except that either party may transfer and assign any of its rights under these Terms without consent in connection with a reorganization, merger, consolidation, acquisition, or other restructuring involving all or substantially all of its voting securities or assets. These Terms will bind and inure to the benefit of the parties and their permitted successors and assigns; any attempted assignment in violation of this Section is void.
Except for a separate written agreement that controls under these Terms, these Terms (together with the policies and pages incorporated by reference) are the complete and exclusive statement of the mutual understanding of the parties concerning their subject matter and supersede prior written and oral agreements, communications, and understandings concerning that subject matter. These Terms do not supersede or amend any separate written agreement described above except as expressly provided in that agreement. All waivers and modifications must be in a writing signed by both parties, except as otherwise provided herein (including Section 1.1 regarding updates to these Terms). No failure or delay by either party in exercising any right under these Terms will operate as a waiver of that right, and no waiver will be effective unless made in writing.
No agency, partnership, joint venture, or employment is created by these Terms, and you do not have any authority of any kind to bind Stackblitz in any respect whatsoever.
Stackblitz may provide notices to you by email to the address associated with your account, by posting within the Services or on the Sites, or by mail, and such notices are deemed given when sent or posted. You may provide notices to Stackblitz by email to legal@stackblitz.com or by mail to StackBlitz, Inc., Attn: Legal, 1160 Battery Street, Suite 30W, San Francisco, CA 94111, and such notices are deemed given when receipt is confirmed (for email) or upon delivery (for mail or recognized overnight delivery service). You are responsible for keeping your account email address current.
If you use the Services on behalf of an organization under a Teams, Enterprise, or other organizational plan, you grant Stackblitz the right to identify that organization as a customer of the Services, including by using its name and logo in customer lists and marketing materials, in a manner that does not suggest sponsorship or endorsement. You may revoke this permission at any time by written notice to legal@stackblitz.com, effective prospectively for materials created after Stackblitz’s receipt of the notice.
Stackblitz will not be liable for any delay or failure to perform resulting from causes beyond its reasonable control, including acts of God, natural disasters, epidemics, war, terrorism, civil unrest, labor disputes, governmental action, power or internet failures, failures of hosting, network, or AI-model providers, or denial-of-service or similar attacks.
You may not access or use the Services in violation of any applicable export control or economic sanctions laws of the United States or any other applicable jurisdiction. You represent that you are not located in, organized under the laws of, or ordinarily resident in any country or region subject to comprehensive sanctions, and that you are not listed on any applicable restricted-party list.
The Services and Site Content are “commercial computer software” and “commercial computer software documentation” as those terms are used in FAR 12.212 and DFARS 227.7202. If you are a U.S. government end user, the Services are licensed to you only with the rights granted to all other users under these Terms.
You consent to receive communications from Stackblitz electronically, including by email and by notices posted within the Services, and you agree that all agreements, notices, disclosures, and other communications provided electronically satisfy any legal requirement that such communications be in writing. You further agree that any click-through acceptance, checkbox, or similar electronic action constitutes your valid signature and acceptance.
Under California Civil Code § 1789.3, California users are entitled to the following notice: the Services are provided by StackBlitz, Inc., 1160 Battery Street, Suite 30W, San Francisco, CA 94111. The Complaint Assistance Unit of the Division of Consumer Services of the California Department of Consumer Affairs may be contacted in writing at 1625 North Market Blvd., Suite N 112, Sacramento, CA 95834, or by telephone at (800) 952-5210.
Except for the parties indemnified under Section 5, these Terms do not confer any rights or remedies on any person other than the parties.
Sections 1.3, 2.3, 3, 4, 5, 6, 7, and 8, and any other provision that by its nature should survive, will survive any termination or expiration of these Terms.
Headings in these Terms are for convenience only and will have no legal meaning or effect. As used in these Terms, “including” and its variants mean “including without limitation,” and “or” is not exclusive. These Terms will not be construed against either party as drafter.