diff --git a/.github/pull_request_template.md b/.github/pull_request_template.md
new file mode 100644
index 0000000..b357d67
--- /dev/null
+++ b/.github/pull_request_template.md
@@ -0,0 +1,15 @@
+## Background
+
+<!-- Explain the problem or opportunity, the relevant current state, and why this change is needed. -->
+
+## Implementation Approach
+
+<!-- Describe the change, important design decisions, and scope boundaries. Use bullets when appropriate. -->
+
+## Testing Approach
+
+<!-- List the exact automated commands and manual or integration checks performed. State any checks not run and why. -->
+
+## Review Perspectives / Points of Concern
+
+<!-- Direct reviewers to material risks, trade-offs, compatibility, security, performance, accessibility, rollout, or rollback concerns. Write "None" when there are no special concerns. -->
diff --git a/AGENTS.md b/AGENTS.md
index f9283e4..c517b53 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -24,4 +24,5 @@ Write repository content, code comments, commit messages, issues, and pull reque
 - Agent guidance is generated from the pinned `stack-sh/docs` source. Edit shared instructions there, then update `skills/docs-source.json` and run `npm run skills:sync`. Never hand-edit the generated skill; verify with `npm run skills:check` and the CLI integration tests.
 
 - Use a topic branch and pull request; squash merge after approval.
+- Write pull request titles and bodies in English, and follow `.github/pull_request_template.md` without removing or renaming its sections.
 - Work in small increments and add repository-specific formatting, linting, tests, and release checks with the code that needs them.