diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index c81e9e7b1..9d45a5869 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -2,6 +2,33 @@
 We want to make contributing to this project as easy and transparent as
 possible.
 
+## AI Assistance Notice
+
+> [!IMPORTANT]
+>
+> If you are using **any kind of AI assistance** to contribute to Llama Stack,
+> it must be disclosed in the pull request.
+
+If you are using any kind of AI assistance while contributing to Llama Stack,
+**this must be disclosed in the pull request**, along with the extent to
+which AI assistance was used (e.g. docs only vs. code generation).
+If PR responses are being generated by an AI, disclose that as well.
+
+An example disclosure:
+
+> This PR was written primarily by Claude Code.
+
+Or a more detailed disclosure:
+
+> I consulted ChatGPT to understand the codebase but the solution
+> was fully authored manually by myself.
+
+Failure to disclose this is first and foremost rude to the human operators
+on the other end of the pull request, but it also makes it difficult to
+determine how much scrutiny to apply to the contribution.
+
+Please be respectful to maintainers and disclose AI assistance.
+
 ## Set up your development environment
 
 We use [uv](https://github.com/astral-sh/uv) to manage python dependencies and virtual environments.