diff --git a/AGENTS.md b/AGENTS.md
index 12c74ee..57e7e99 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -11,6 +11,7 @@ This document is a working guide for coding agents in this repository. It captur
 - When requirements are exploratory, help turn them into concrete workflows, domain language, and next implementation steps.
 - Do not rewrite broad areas of the codebase without clear justification from the current task.
 - Preserve user changes in the worktree and treat uncommitted files as active collaboration unless told otherwise.
+- When creating commits, use the Conventional Commits format, for example `docs: update product planning`.
 
 ## Repository Layout
 - `backend/`: ASP.NET Core (`net9.0`) API using FastEndpoints, EF Core (PostgreSQL), Stripe, Azure Blob Storage, and ASP.NET Identity.