Add the Open Home Foundation AI Policy

.github/PULL_REQUEST_TEMPLATE.md

@@ -57,7 +57,8 @@
   for before merging your code.
 
   AI tools are welcome, but contributors are responsible for *fully*
-  understanding the code before submitting a PR.
+  understanding the code before submitting a PR. Please follow our AI policy:
+  https://developers.home-assistant.io/docs/ai_policy
 -->
 
 - [ ] I understand the code I am submitting and can explain how it works.

.github/copilot-instructions.md

@@ -74,7 +74,8 @@ The PR description must follow this template (from `.github/PULL_REQUEST_TEMPLAT
   for before merging your code.
 
   AI tools are welcome, but contributors are responsible for *fully*
-  understanding the code before submitting a PR.
+  understanding the code before submitting a PR. Please follow our AI policy:
+  https://developers.home-assistant.io/docs/ai_policy
 -->
 
 - [ ] I understand the code I am submitting and can explain how it works.
@@ -180,3 +181,11 @@ This repository contains the core of Home Assistant, a Python 3 based home autom
 - Do not add comments that just restate the code on the following line(s) (e.g. `# Check if initialized` above `if self.initialized:`). Comments should only explain why (non-obvious constraints, surprising behavior, or workarounds), never what. Never add comments that justify a change by referencing what the code looked like before.
 - Do not add section or divider comments (e.g. `# --- XYZ Triggers ---`) inside or outside of functions, since those can easily become stale and be misleading.
 - When catching exceptions, try-clauses should be as small as possible, i.e. avoid wrapping large blocks of code in a try-clause, and avoid catching exceptions from functions that are not expected to raise them.
+
+## AI policy
+
+This project follows the [Open Home Foundation AI Policy](AI_POLICY.md).
+Autonomous contributions are not accepted: a human must review, understand,
+and be able to explain every change before it is submitted. Do not open
+issues or pull requests autonomously, and do not post comments on behalf of
+a user without their review.

AGENTS.md

@@ -44,3 +44,11 @@ This repository contains the core of Home Assistant, a Python 3 based home autom
 - Do not add comments that just restate the code on the following line(s) (e.g. `# Check if initialized` above `if self.initialized:`). Comments should only explain why (non-obvious constraints, surprising behavior, or workarounds), never what. Never add comments that justify a change by referencing what the code looked like before.
 - Do not add section or divider comments (e.g. `# --- XYZ Triggers ---`) inside or outside of functions, since those can easily become stale and be misleading.
 - When catching exceptions, try-clauses should be as small as possible, i.e. avoid wrapping large blocks of code in a try-clause, and avoid catching exceptions from functions that are not expected to raise them.
+
+## AI policy
+
+This project follows the [Open Home Foundation AI Policy](AI_POLICY.md).
+Autonomous contributions are not accepted: a human must review, understand,
+and be able to explain every change before it is submitted. Do not open
+issues or pull requests autonomously, and do not post comments on behalf of
+a user without their review.

AI_POLICY.md

@@ -0,0 +1,45 @@
+# Open Home Foundation - AI Policy
+
+We support using AI (i.e., LLMs) as tools when contributing to Open Home Foundation projects. However, you are responsible for any contributions you submit, and we are responsible for any contributions we merge and release. We hold a high bar for all contributions to our projects.
+
+Our maintainers dedicate their time and expertise to reviewing contributions. Submitting AI-generated content that you have not personally reviewed and understood wastes that time and will not be accepted.
+
+## Autonomous agents
+
+**We do not allow autonomous agents to be used for contributing to our projects.** We will close any pull requests or issues that we believe were created autonomously, and may mark automated comments as spam. This includes contributions that bypass the provided issue or pull request templates.
+
+## Communication on issues, pull requests, and code reviews
+
+We don't mind if you use AI tools to help you write. However, do not have tools post unreviewed content on your behalf. Keep responses to the minimum needed to communicate your intent. We may hide any comments that we believe are unreviewed AI output.
+
+If you are opening a pull request, we expect you to be able to explain the proposed changes in your own words. This includes the pull request description and responses to questions. If you use AI to help generate the pull request summary, you must review it for technical accuracy.
+
+**Do not use AI to generate answers to questions from maintainers.** You should understand and be able to explain your own work. Using AI to improve grammar or clarity is fine, but the substance of your responses must be your own.
+
+If you wish to include context from an interaction with AI in your comments, it must be in a quote block (e.g., using `>`) and disclosed as such. It must be accompanied by your own commentary explaining the relevance and implications of the context. Do not share long snippets.
+
+## Non-native English speakers
+
+We understand that AI is useful when communicating as a non-native English speaker. Using AI to improve the grammar or clarity of text you have written yourself is fine. If you are using AI to translate your comments, please ensure the translation accurately reflects your intent. Including your original text in a details block shows the effort behind your contribution, helps maintainers verify the translation if needed, and keeps the conversation readable.
+
+## Code and documentation contributions
+
+AI can be a helpful tool for writing code and documentation. However, due to the foundational open source nature of our projects, we require a human in the loop who understands the work produced by AI.
+
+All contributions must be reviewed and understood by the contributor before submission. You should be able to explain every change in a pull request you submit. Pull requests that appear to be unreviewed AI output will be closed without review.
+
+## Our use of AI
+
+Some of our projects use AI tools to assist with code reviews, issue triaging, reporting, and other project management tasks. These tools may leave comments on pull requests or issues. As with any automated tooling, these comments are not always correct.
+
+If an AI tool leaves a comment on your contribution, treat it as you would any other review comment. If you believe it is incorrect, say so; a brief explanation is sufficient. Maintainers always have the final say. If in doubt, ask a maintainer.
+
+## Enforcement
+
+Contributions that do not follow this policy will be closed. Repeated violations may result in being blocked from contributing to OHF projects. If you believe your contribution was closed in error, you are welcome to reach out to a maintainer to discuss.
+
+---
+
+The canonical version of this policy is published at
+<https://developers.home-assistant.io/docs/ai_policy>. In case of differences,
+the published version applies.

CONTRIBUTING.md

@@ -19,3 +19,10 @@ If you want to suggest a new feature for Home Assistant (e.g. new integrations),
 ## Issue Tracker
 
 If you want to report an issue, please [create an issue](https://github.com/home-assistant/core/issues) on GitHub.
+
+## AI policy
+
+This project follows the [Open Home Foundation AI Policy](AI_POLICY.md). In
+short: AI tools are welcome as an aid, but you must fully understand and be
+able to explain every change you submit. Contributions made by autonomous
+agents are not accepted.