Vigil

Terms of Use

Effective Date: August 29, 2026

These Terms of Use govern your access to and use of Vigil, a mobile monitoring utility operated by Matt Crypto (“Company,” “we,” “us,” or “our”). By downloading, accessing, or using Vigil (the “App”), you agree to these Terms of Use. If you do not agree, do not use the App.

1. Eligibility

You must be legally able to enter into a binding agreement in your jurisdiction to use the App. By using the App, you represent that:

• you are at least the age of majority in your jurisdiction, or you have permission from a parent or legal guardian;
• you are not prohibited from using the App under applicable law; and
• you will use the App only in compliance with these Terms of Use and applicable law.

2. Description of the App

Vigil is a read-only monitoring utility for public Solana blockchain addresses. Depending on the version of the App and your settings, features may include:

• watching public addresses and displaying balances and parsed transaction activity;
• notifications about activity on watched addresses;
• heuristic detection of suspected address-poisoning attempts (lookalike addresses);
• a pre-send address checker comparing an address against your saved contacts, local history, and lookalike patterns; and
• a local trusted-contacts address book.

The App is non-custodial in the strongest sense: it contains no wallet, holds no keys, and cannot create, sign, or submit transactions. We may add, remove, change, suspend, or limit features at any time.

3. Informational Tool Only — No Guarantees

The App’s alerts, verdicts, and displays are informational heuristics, not guarantees. You acknowledge and agree that:

• poisoning detection is based on similarity patterns and may miss attacks (false negatives) or flag legitimate addresses (false positives);
• activity data depends on the RPC endpoint you configure and may be delayed, incomplete, or unavailable (background checks run at intervals, not in real time);
• a “no red flags” or “trusted” result is not a representation that a transaction is safe, and a flagged result is not an accusation against any person; and
• you remain solely responsible for verifying addresses and approving transactions in your wallet applications. The App is a second opinion, not a substitute for care.

4. Your Responsibilities

You are solely responsible for:

• the accuracy of addresses and labels you save;
• maintaining alternative verification channels for important payments;
• the security of your devices and wallet applications (which are unrelated to the App); and
• any decisions you make based on information the App displays.

We are not responsible for losses caused by misdirected transactions, poisoning attacks the App did not detect, RPC failures, notification delays, or user error.

5. Third-Party Services

The App queries the Solana RPC endpoint you configure. RPC providers are third parties with their own terms and policies, and we are not responsible for their availability, accuracy, or conduct. Wallet applications, exchanges, and other services whose addresses you monitor are likewise third parties unaffiliated with the App; their trademarks belong to their respective owners.

6. License

Subject to these Terms of Use, we grant you a personal, limited, non-exclusive, non-transferable, revocable license to install and use the App on devices you own or control. The App’s source code is separately made available under the MIT License at https://github.com/mattcrypto12/Vigil; that license governs the source code, and these Terms of Use govern your use of the distributed App.

7. Prohibited Conduct

You agree not to:

• use the App in violation of applicable law;
• use the App to harass, stalk, or surveil any person;
• misrepresent the App’s outputs as authoritative accusations or endorsements; or
• distribute modified versions in a manner likely to confuse users about their origin.

8. Disclaimers

THE APP IS PROVIDED “AS IS” AND “AS AVAILABLE” WITHOUT WARRANTIES OF ANY KIND, WHETHER EXPRESS, IMPLIED, OR STATUTORY, INCLUDING WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND NON-INFRINGEMENT. WE DO NOT WARRANT THAT THE APP WILL DETECT ANY PARTICULAR ATTACK, THAT ITS DATA WILL BE ACCURATE OR TIMELY, OR THAT IT WILL BE ERROR-FREE OR UNINTERRUPTED.

9. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE COMPANY WILL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, EXEMPLARY, OR PUNITIVE DAMAGES, OR FOR LOSS OF FUNDS, PROFITS, OR DATA, ARISING OUT OF OR RELATING TO YOUR USE OF OR RELIANCE ON THE APP. TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE COMPANY’S TOTAL AGGREGATE LIABILITY FOR ALL CLAIMS RELATING TO THE APP WILL NOT EXCEED THE GREATER OF (A) THE AMOUNT YOU PAID FOR THE APP, IF ANY, AND (B) TEN U.S. DOLLARS (US$10).

10. Indemnification

You agree to indemnify and hold harmless the Company from and against claims, damages, liabilities, costs, and expenses (including reasonable attorneys’ fees) arising out of your use of the App or your violation of these Terms of Use.

11. Changes to the App or Terms

We may update the App and these Terms of Use from time to time. Material changes will be reflected by updating the Effective Date above. Your continued use of the App after changes become effective constitutes acceptance of the revised Terms of Use.

12. Termination

You may stop using the App at any time by uninstalling it. We may terminate or suspend availability of the App at any time. Sections that by their nature should survive termination (including Sections 3, 4, 8, 9, and 10) survive.

13. Governing Law

These Terms of Use are governed by the laws of the State of Tennessee, without regard to its conflict-of-laws principles, except to the extent superseded by applicable law.

14. Contact

Questions about these Terms of Use can be raised via the support contact listed on the App’s Solana dApp Store listing or by opening an issue at https://github.com/mattcrypto12/Vigil.