Last updated: March 29, 2026
These Terms of Service ("Terms") govern your use of Fill.md ("Fill," "we," "us"), an advertising and cross-promotion network operated as a service. By registering an app, integrating the Fill SDK, using the Fill MCP server, or accessing any Fill service (collectively, the "Services"), you ("Publisher," "you") agree to be bound by these Terms. If you do not agree, do not use the Services.
You must be at least 18 years of age and have the legal capacity to enter into binding agreements to use the Services.
Fill is a cross-promotion network for web applications. Publishers integrate the Fill SDK to display ads from other apps in the network and earn credits. Credits may be spent to promote the Publisher's own app across the network. The Services include:
3.1 Registration creates an account associated with an API key. You are responsible for maintaining the confidentiality of your API key. Any activity under your API key is your responsibility.
3.2 You agree to provide accurate information during registration. Providing false information is grounds for immediate account termination.
3.3 You may register multiple apps. Each app receives its own API key and credit balance.
Fill reserves the right to adjust credit rates, modify the credit system, or suspend credit accumulation at any time with 30 days' notice. Credits already earned at the time of a rate change will not be retroactively adjusted.
CREDITS ARE VIRTUAL ITEMS WITH NO INHERENT CASH VALUE. CREDITS DO NOT CONSTITUTE CURRENCY, PROPERTY, OR A STORED VALUE INSTRUMENT. CREDITS ARE NOT TRANSFERABLE, ASSIGNABLE, OR REDEEMABLE EXCEPT AS EXPRESSLY PROVIDED IN THESE TERMS. FILL MAY MODIFY, SUSPEND, OR DISCONTINUE THE CREDIT SYSTEM AT ANY TIME IN ITS SOLE DISCRETION.
5.1 Fill determines, in its sole discretion, what constitutes valid impressions, clicks, requests, traffic, and activity ("Valid Activity"). Invalid activity includes but is not limited to:
5.2 Fill reserves the right to withhold, adjust, or offset any payments or credits based on: (i) activity Fill determines in its sole discretion to be invalid; (ii) suspected violation of these Terms; or (iii) amounts owed by Publisher to Fill.
5.3 To protect the integrity of our detection systems, Fill will not disclose specific details of invalid activity determinations.
5.4 Clawback: If Fill determines that Publisher has engaged in invalid activity, Publisher shall reimburse Fill for all losses associated with such violations, including credits or amounts previously awarded that arose from such activity.
As a Publisher, you agree to:
7.1 Campaigns created through Fill (via API, MCP, or dashboard) are subject to Fill's content policies. Fill reserves the right to reject, suspend, or remove any campaign at its sole discretion.
7.2 Credits spent on campaigns are non-refundable once the campaign has served any impressions.
7.3 Fill does not guarantee any specific fill rate, impression count, click count, or performance for campaigns.
8.1 Fill does not pre-screen, monitor, or review all advertisements, Publisher Properties, or other content served through the Services. Fill shall not be liable for any third-party content, including advertiser creatives or Publisher Properties content.
8.2 Publisher is solely responsible for: (a) all content appearing on Publisher Properties; (b) ensuring Publisher Properties comply with all applicable laws; and (c) compliance with COPPA for child-directed properties.
9.1 TO THE MAXIMUM EXTENT PERMITTED BY LAW, EXCEPT FOR (i) INDEMNIFICATION OBLIGATIONS, (ii) BREACHES OF CONFIDENTIALITY, (iii) INTELLECTUAL PROPERTY INFRINGEMENT, OR (iv) GROSS NEGLIGENCE OR WILLFUL MISCONDUCT, NEITHER PARTY SHALL BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, CONSEQUENTIAL, OR PUNITIVE DAMAGES, INCLUDING LOST PROFITS, LOSS OF DATA, LOSS OF REVENUE, OR SERVICE INTERRUPTION, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
9.2 EACH PARTY'S TOTAL AGGREGATE LIABILITY ARISING UNDER OR RELATED TO THESE TERMS SHALL NOT EXCEED THE LESSER OF: (A) TEN THOUSAND U.S. DOLLARS (US$10,000); OR (B) THE NET AMOUNTS PAID BY THE CLAIMING PARTY TO FILL DURING THE THREE (3) MONTHS IMMEDIATELY PRECEDING THE DATE THE CLAIM AROSE. IF NO AMOUNTS WERE PAID IN SUCH PERIOD, FILL'S AGGREGATE LIABILITY SHALL NOT EXCEED TWENTY U.S. DOLLARS (US$20.00).
Publisher agrees to indemnify, defend, and hold harmless Fill, its affiliates, officers, directors, employees, agents, licensors, and advertisers ("Indemnified Parties") from and against any and all third-party claims, liabilities, damages, losses, costs, and expenses (including reasonable attorneys' fees) arising out of or related to: (a) Publisher Properties or content appearing thereon; (b) Publisher's use of the Services; (c) Publisher's breach of any term of this Agreement; (d) Publisher's violation of any applicable law or regulation; or (e) Publisher's fraud, intentional misconduct, or negligence. Advertisers using the Services are intended third-party beneficiaries of this indemnification.
FILL MAKES NO REPRESENTATIONS, WARRANTIES, OR GUARANTEES REGARDING: (A) THE LEVEL OF TRAFFIC, IMPRESSIONS, FILL RATE, CLICK-THROUGH RATE, CONVERSION RATE, EARNINGS, OR REVENUE THAT PUBLISHER WILL ACHIEVE; (B) THE CONTINUED AVAILABILITY OF ANY ADVERTISER, CAMPAIGN, OR AD CATEGORY; OR (C) THE SUITABILITY OF THE SERVICES FOR PUBLISHER'S BUSINESS OBJECTIVES. PUBLISHER'S ACTUAL RESULTS WILL VARY. FILL SHALL HAVE NO LIABILITY FOR ANY FAILURE TO ACHIEVE PUBLISHER'S REVENUE EXPECTATIONS.
The Services are provided "as is" and "as available." Fill does not guarantee uptime, availability, or uninterrupted service. Fill may modify, suspend, or discontinue any part of the Services at any time without notice. Scheduled maintenance may result in temporary service interruptions.
13.1 Fill may suspend or terminate Publisher's account or access to the Services at any time, with or without cause, and with or without notice, at Fill's sole discretion.
13.2 Fill may remove Publisher's account data from the platform following termination, subject to any retention obligations required by law.
13.3 Termination shall not entitle Publisher to any refund of amounts already paid. Fill may withhold final credit payouts if the account is terminated for policy violations pending investigation.
13.4 Upon termination, Publisher must cease all use of the Fill SDK, API, and MCP server and remove Fill integrations from Publisher Properties.
PLEASE READ THIS SECTION CAREFULLY. IT AFFECTS YOUR LEGAL RIGHTS, INCLUDING YOUR RIGHT TO FILE A LAWSUIT IN COURT.
14.1 Informal Resolution: Before initiating arbitration, the claiming party must provide sixty (60) days' written notice to the other party describing the dispute in reasonable detail. The parties shall attempt in good faith to resolve the dispute informally during this period. Notice to Fill: hello@fill.md.
14.2 Binding Arbitration: Any dispute, claim, or controversy arising from or relating to this Agreement, or its breach, termination, enforcement, interpretation, or validity, including the scope of this arbitration agreement, shall be determined by binding arbitration administered by JAMS pursuant to its Comprehensive Arbitration Rules and Procedures. Arbitration shall take place in San Francisco, California. The arbitrator's award shall be final and binding and may be entered as a judgment in any court of competent jurisdiction.
14.3 Class Action Waiver: YOU AND FILL AGREE THAT EACH MAY BRING CLAIMS AGAINST THE OTHER ONLY IN AN INDIVIDUAL CAPACITY AND NOT AS A PLAINTIFF OR CLASS MEMBER IN ANY CLASS, COLLECTIVE, CONSOLIDATED, OR REPRESENTATIVE ACTION. THE ARBITRATOR MAY NOT CONSOLIDATE MORE THAN ONE PARTY'S CLAIMS AND MAY NOT PRESIDE OVER ANY CLASS OR REPRESENTATIVE PROCEEDING.
14.4 Exceptions: Either party may seek injunctive relief in any court of competent jurisdiction for intellectual property infringement or misappropriation claims.
Publisher's use of the Services is subject to Fill's Privacy Policy at fill.md/privacy, which is incorporated into these Terms by reference. The Privacy Policy governs Fill's processing of data in connection with the Services.
Publisher is responsible for: (i) implementing "Do Not Sell or Share" opt-out mechanisms where required by law (CCPA/CPRA); (ii) processing Global Privacy Control (GPC) signals; (iii) obtaining any required consents under applicable law before serving advertising through Fill; and (iv) providing appropriate privacy disclosures to end users of Publisher Properties.
16.1 Fill retains all rights in the Services, including the API, SDK, MCP server, website, and all associated intellectual property. Publisher is granted a limited, non-exclusive, non-transferable, revocable license to use the Services in accordance with these Terms.
16.2 Publisher retains all rights in Publisher Properties and content not provided by Fill.
Fill may modify these Terms at any time. Material changes will be posted at fill.md/terms with an updated date and, where possible, communicated via email. Continued use of the Services after changes constitutes acceptance. If you do not agree to modified Terms, your sole remedy is to cease using the Services and terminate your account.
These Terms shall be governed by the laws of the State of California, United States, without regard to conflict of law principles. Subject to the arbitration provisions in Section 14, any litigation shall be brought exclusively in the state or federal courts located in San Francisco County, California.
If any provision of these Terms is held invalid or unenforceable, the remaining provisions shall remain in full force and effect. The invalid provision shall be modified to the minimum extent necessary to make it valid and enforceable.
These Terms, together with the Privacy Policy, constitute the entire agreement between you and Fill regarding the Services and supersede all prior agreements and understandings.
For questions about these Terms: