diff --git a/src/components/Webmentions.astro b/src/components/Webmentions.astro
index eb4dcde..41eeedb 100644
--- a/src/components/Webmentions.astro
+++ b/src/components/Webmentions.astro
@@ -47,19 +47,10 @@ interface FetchResult {
 }
 
 async function fetchMentions(target: string): Promise<FetchResult> {
-	// 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 token = WEBMENTION_TOKEN;
 	const tokenLen = typeof token === 'string' ? token.length : 0;
-	const probe = `ae=${fromAstroEnv ? (fromAstroEnv as string).length : 0},pk=${procKeyCount},phas=${hasWebmentionKey},pv=${procValLen}`;
-	if (!token) return { mentions: [], debug: `no-token(${probe})` };
+	const source = FILE_TOKEN ? 'file' : 'env';
+	if (!token) return { mentions: [], debug: `no-token(src=${source},len=${tokenLen})` };
 	const withSlash = target.endsWith('/') ? target : `${target}/`;
 	const withoutSlash = target.replace(/\/+$/, '');
 	const fetchOne = async (t: string) => {
@@ -83,7 +74,7 @@ async function fetchMentions(target: string): Promise<FetchResult> {
 	}
 	return {
 		mentions: merged,
-		debug: `ok(${probe}) slash=${a.status}:${a.entries.length} noslash=${b.status}:${b.entries.length}`,
+		debug: `ok(src=${source},len=${tokenLen}) slash=${a.status}:${a.entries.length} noslash=${b.status}:${b.entries.length}`,
 	};
 }