diff --git a/src/site.config.ts b/src/site.config.ts
index 7ea8b679e..eb3e63b78 100644
--- a/src/site.config.ts
+++ b/src/site.config.ts
@@ -22,6 +22,7 @@ export const siteConfig: SiteConfig = {
 		},
 	},
 	webmentions: {
+		// Webmention.io API endpoint. Get your own here: https://webmention.io/, and follow this blog post: https://astro-cactus.chriswilliams.dev/posts/webmentions/
 		link: "https://webmention.io/astro-cactus.chriswilliams.dev/webmention",
 	},
 };