diff --git a/AGENTS.md b/AGENTS.md
index 07dc4a3..b41ee2a 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -6,6 +6,14 @@ This repository contains a TypeScript client library for the OpenHands Agent Ser
 
 The client is designed to mirror the structure and functionality of the Python SDK (`software-agent-sdk`) while providing idiomatic TypeScript/JavaScript APIs with full type safety and modern development tooling.
 
+## Cross-Repository Boundaries
+
+This repository owns the browser-compatible TypeScript client for the OpenHands Agent Server API. The canonical API implementation and behavior belong to [`OpenHands/software-agent-sdk`](https://github.com/OpenHands/software-agent-sdk); [`OpenHands/OpenHands`](https://github.com/OpenHands/OpenHands) consumes this client for Agent Canvas UI; and [`OpenHands/extensions`](https://github.com/OpenHands/extensions) owns reusable skills, plugins, automations, and integrations; [`OpenHands/automation`](https://github.com/OpenHands/automation) owns scheduling, webhooks, run history, and dispatching.
+
+The normal flow is SDK/Agent Server → OpenAPI contract → this client → Agent Canvas. Keep backend behavior and endpoints in the SDK, typed API access here, UI in Agent Canvas, and automation lifecycle behavior in `automation`. If a PR is opened in the wrong repository, explicitly recommend closing and moving it to the owning repository rather than merging it here.
+
+All pull requests must follow the repository's contribution and applicable code-review guidance.
+
 ## Key Features
 
 - **Complete API Coverage**: Implements all endpoints from the OpenHands Agent Server OpenAPI specification
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 8213cbd..e5571c1 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -62,8 +62,10 @@ python scripts/check-acp-drift.py
 
 ## Pull requests
 
+- Confirm the change belongs in `typescript-client`: backend behavior and endpoints belong in [`software-agent-sdk`](https://github.com/OpenHands/software-agent-sdk), UI belongs in [`OpenHands/OpenHands`](https://github.com/OpenHands/OpenHands), and scheduling/webhooks/dispatch belong in [`OpenHands/automation`](https://github.com/OpenHands/automation).
+- If a PR is opened in the wrong repository, recommend closing and moving it to the repository that owns the change.
 - Open focused PRs with a clear description of what changed and why.
-- Make sure the relevant checks pass before requesting review.
+- Follow the repository's applicable code-review guidance and make sure the relevant checks pass before requesting review.
 - Use conventional prefixes in the PR title when possible, such as `feat`,
   `fix`, `docs`, `refactor`, `test`, `build`, `ci`, or `chore`.
 - Include screenshots or recordings when changing user-facing example apps or
diff --git a/README.md b/README.md
index 87778ae..34a8bf3 100644
--- a/README.md
+++ b/README.md
@@ -75,6 +75,13 @@ Pinned PR CI is reproducible and required. A separate weekly
 `main` commit, records that SHA, and opens or updates an informational drift
 issue. Ordinary client PRs never generate from the moving SDK branch.
 
+
+## Repository boundaries
+
+This repository owns the browser-compatible typed client for the OpenHands Agent Server API. [`OpenHands/software-agent-sdk`](https://github.com/OpenHands/software-agent-sdk) owns the canonical API implementation, Agent Server, and agent behavior; [`OpenHands/OpenHands`](https://github.com/OpenHands/OpenHands) consumes this client for Agent Canvas UI; and [`OpenHands/extensions`](https://github.com/OpenHands/extensions) owns reusable skills, plugins, automations, and integrations; [`OpenHands/automation`](https://github.com/OpenHands/automation) owns scheduling, webhooks, run history, and dispatching.
+
+The normal flow is SDK/Agent Server → OpenAPI contract → this client → Agent Canvas. Add typed endpoint access here, backend behavior in the SDK, UI in Canvas, and automation lifecycle behavior in `automation`. A PR opened in the wrong repository should be closed and moved to the repository that owns the change.
+
 ## Quick Start
 
 ### Start an AgentServer