diff --git a/AGENTS.md b/AGENTS.md
new file mode 100644
index 0000000..ecbe60f
--- /dev/null
+++ b/AGENTS.md
@@ -0,0 +1,14 @@
+# AGENTS.md — website
+
+Follow the org-wide rules in [BenchCommons/.github AGENTS.md](https://github.com/BenchCommons/.github/blob/main/AGENTS.md) and the decisions in [.product](https://github.com/BenchCommons/.product). This file only adds what is specific to this repo.
+
+## Role
+Site: publishes BenchCommons benchmark results. It currently shows SSGBerk; support for several families is tracked in issue #5.
+
+## Stack and commands
+- Svelte 5 with Vite. Node >= 24. Tests: Vitest, Playwright and Lighthouse CI. Deployed to Cloudflare Workers as static assets.
+- Data comes from git submodules in `data/`, namely benchmark-tool results and catalog-ssg `generators.json`. `scripts/build-data.mjs` writes `public/data/*.json`.
+
+## Rules
+- Consume the results format owned by benchmark-tool. Do not invent ad-hoc data files.
+- A new round only appears after the data submodules are bumped.