> For the complete documentation index, see [llms.txt](https://docs.sail.money/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.sail.money/legal/open-source-licenses.md). # Open-Source Licenses **Last updated: July 1, 2026** Both Sail products are open-source software. **Your rights to use, copy, modify, and distribute the software come from these licenses — not from the** [**Terms of Use**](/legal/terms-of-use.md)**.** Nothing in the Terms of Use limits, conditions, or revokes any right these licenses grant. If the Terms of Use and an open-source license ever conflict as to the software, the license controls. The authoritative license text is the `LICENSE` file (and the per-file `SPDX-License-Identifier` headers) in each source repository. The summary below is for convenience only. ## Sail Protocol Sail Protocol is **mixed-license**, and it is not accurate to call it simply "GPL": * **Kernel and core contracts — `GPL-2.0-or-later`.** This covers the `SailKernel`, the mandate factory, governance, fee policy, permission templates, and related core contracts. Copyleft: distributing modified versions of these contracts carries the GPL's source-availability obligations. * **Interface contracts — `MIT`.** The contract interfaces (the `contracts/interfaces` files — e.g. `IPermission`, `IFeePolicy`, `IOracle`, `SailCapabilities`) and the Safe module-enabler helper are MIT-licensed, so you can build against and integrate with the protocol permissively. Each Solidity file declares its own license in its `SPDX-License-Identifier` header; that header is authoritative for that file. * Repository: [github.com/sail-money/Protocol](https://github.com/sail-money/Protocol) * License file: [LICENSE (GPL-2.0)](https://github.com/sail-money/Protocol/blob/main/LICENSE) ## Sailor Sailor — the TypeScript toolkit, CLI, and SDK — is licensed under the **`MIT`** license in full. * Repository: [github.com/sail-money/Sailor](https://github.com/sail-money/Sailor) * License file: [LICENSE (MIT)](https://github.com/sail-money/Sailor/blob/main/LICENSE) * Package: [`@sail.money/sailor`](https://www.npmjs.com/package/@sail.money/sailor) on npm ## Third-party components Both products depend on third-party open-source components, each under its own license (for example, [Safe](https://safe.global) contracts and libraries, and the `viem` library used by Sailor). Those components are governed by their respective licenses, which are included with their source. ## Trademarks are not licensed These open-source licenses grant rights to the **code only.** "Sail," "Sailor," and related names and logos are trademarks of Agentic Finance Inc. and are **not** licensed under GPL, MIT, or any other license here. ## Contact Questions about licensing: ****. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.sail.money/legal/open-source-licenses.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.