diff --git a/src/components/Webmentions.astro b/src/components/Webmentions.astro
index 03ba39e..cf3c08a 100644
--- a/src/components/Webmentions.astro
+++ b/src/components/Webmentions.astro
@@ -31,9 +31,19 @@ interface FetchResult {
 }
 
 async function fetchMentions(target: string): Promise<FetchResult> {
-	const token = WEBMENTION_TOKEN;
+	// Probe multiple env sources to see which one has the token at build time.
+	const fromAstroEnv = WEBMENTION_TOKEN;
+	const procEnv = typeof process !== 'undefined' ? process.env : {};
+	const procKeyCount = Object.keys(procEnv).length;
+	const hasWebmentionKey = 'WEBMENTION_TOKEN' in procEnv;
+	const procValLen =
+		hasWebmentionKey && typeof procEnv['WEBMENTION_TOKEN'] === 'string'
+			? (procEnv['WEBMENTION_TOKEN'] as string).length
+			: 0;
+	const token = fromAstroEnv || (hasWebmentionKey ? (procEnv['WEBMENTION_TOKEN'] as string) : undefined);
 	const tokenLen = typeof token === 'string' ? token.length : 0;
-	if (!token) return { mentions: [], debug: `no-token(astroenv=${tokenLen})` };
+	const probe = `ae=${fromAstroEnv ? (fromAstroEnv as string).length : 0},pk=${procKeyCount},phas=${hasWebmentionKey},pv=${procValLen}`;
+	if (!token) return { mentions: [], debug: `no-token(${probe})` };
 	const withSlash = target.endsWith('/') ? target : `${target}/`;
 	const withoutSlash = target.replace(/\/+$/, '');
 	const fetchOne = async (t: string) => {
@@ -57,7 +67,7 @@ async function fetchMentions(target: string): Promise<FetchResult> {
 	}
 	return {
 		mentions: merged,
-		debug: `ok(len=${tokenLen}) slash=${a.status}:${a.entries.length} noslash=${b.status}:${b.entries.length}`,
+		debug: `ok(${probe}) slash=${a.status}:${a.entries.length} noslash=${b.status}:${b.entries.length}`,
 	};
 }