diff --git a/packages/obsidian/src/library/LibraryController.ts b/packages/obsidian/src/library/LibraryController.ts
index 1e73d21..9162eda 100644
--- a/packages/obsidian/src/library/LibraryController.ts
+++ b/packages/obsidian/src/library/LibraryController.ts
@@ -146,17 +146,25 @@ export class LibraryController {
 		}
 	}
 
+	/** Surfaces every counter, not just synced/written/flipped -- a run where fetches are
+	 * silently failing (e.g. Comic Vine error envelope) must not read as an empty-but-clean
+	 * success just because skippedNoData/errors were left out of the message. */
+	private buildSyncSummary(spec: MediaTypeSpec, mode: string, report: LibraryReport): string {
+		let msg = `Library ${mode}sync (${spec.typeName}): ${report.scanned} scanned, ${report.synced} ok, ${report.written} updated, ${report.flipped.length} flipped`;
+		if (report.skippedStatic) msg += `, ${report.skippedStatic} static`;
+		if (report.skippedNoId) msg += `, ${report.skippedNoId} no-id`;
+		if (report.skippedNoData) msg += `, ${report.skippedNoData} no-data (see console)`;
+		if (report.errors.length) msg += `, ${report.errors.length} errors (see console)`;
+		return msg;
+	}
+
 	private async runSync(spec: MediaTypeSpec, full: boolean, dryRun: boolean, quiet: boolean): Promise<LibraryReport> {
 		this.warnMissingKey(spec, quiet);
 		const deps = this.makeDeps(spec, dryRun);
 		const report = await libraryFolderSync(spec, deps, { full, dryRun });
 		const mode = dryRun ? 'DRY-RUN ' : '';
 		if (shouldNotifySync(quiet, report.written, report.errors.length)) {
-			this.notify(
-				`Library ${mode}sync (${spec.typeName}): ${report.synced} checked, ${report.written} updated, ${report.flipped.length} flipped` +
-					(report.errors.length ? `, ${report.errors.length} errors (see console)` : ''),
-				0,
-			);
+			this.notify(this.buildSyncSummary(spec, mode, report), 0);
 		}
 		return report;
 	}
diff --git a/packages/obsidian/src/library/comic.ts b/packages/obsidian/src/library/comic.ts
index 18fdd2c..ab27433 100644
--- a/packages/obsidian/src/library/comic.ts
+++ b/packages/obsidian/src/library/comic.ts
@@ -139,9 +139,27 @@ export function renderComic(r: ComicRecord, myNotes: string, customSections: Cus
 	return fm.join('\n') + '\n' + b.join('\n');
 }
 
-async function fetchVolumeResults(query: string, key: string, deps: SpecDeps): Promise<any[]> {
+/**
+ * Comic Vine returns HTTP 200 even on auth/request failures -- the real signal is the
+ * envelope's `status_code` (1 = OK; anything else carries a human-readable `error`, e.g.
+ * "Invalid API Key"). Left un-checked, callers see empty `results` and treat it as
+ * "nothing found" instead of a real failure. `status_code` absent entirely (as in older
+ * hand-built test fixtures) is treated as OK -- only an explicit non-1 code trips this.
+ */
+function checkEnvelope(data: any, deps: SpecDeps): boolean {
+	if (data && data.status_code !== undefined && data.status_code !== 1) {
+		const msg = data.error || 'Unknown error';
+		deps.log(`Comic Vine error: ${msg}`);
+		deps.notify(`Comic Vine: ${msg}`);
+		return false;
+	}
+	return true;
+}
+
+async function fetchVolumeResults(query: string, key: string, deps: SpecDeps): Promise<any[] | null> {
 	const qs = new URLSearchParams({ api_key: key, format: 'json', filter: `name:${query}`, limit: '10' });
 	const res = await deps.http(`${COMICVINE_BASE}/volumes/?${qs.toString()}`, {});
+	if (!checkEnvelope(res, deps)) return null;
 	return Array.isArray(res?.results) ? res.results : [];
 }
 
@@ -183,6 +201,7 @@ export const comicSpec: MediaTypeSpec = {
 		if (!query) return null;
 		try {
 			const results = await fetchVolumeResults(query, key, deps);
+			if (results === null) return null; // envelope error already logged/notified
 			if (results.length === 0) return null;
 			const q = query.toLowerCase();
 			const exacts = results.filter(r => String(r.name ?? '').toLowerCase() === q);
@@ -218,6 +237,8 @@ export const comicSpec: MediaTypeSpec = {
 			return null;
 		}
 
+		if (!checkEnvelope(json, deps)) return null;
+
 		const result = json?.results;
 		if (!result || !result.name || (result.id != null && String(result.id) !== id)) {
 			// identity-guard: never silently swap to a different volume's data; leave the note
diff --git a/tests/fixtures/comicvine-volume.json b/tests/fixtures/comicvine-volume.json
index 949ea88..c2d3d7d 100644
--- a/tests/fixtures/comicvine-volume.json
+++ b/tests/fixtures/comicvine-volume.json
@@ -1,4 +1,6 @@
 {
+	"error": "OK",
+	"status_code": 1,
 	"results": {
 		"id": 195824,
 		"name": "Absolute Batman",
diff --git a/tests/library-comic.test.ts b/tests/library-comic.test.ts
index 7213222..2d6e2aa 100644
--- a/tests/library-comic.test.ts
+++ b/tests/library-comic.test.ts
@@ -329,6 +329,16 @@ describe('comicSpec.resolve', () => {
 		const result = await comicSpec.resolve(ctx, deps);
 		expect(result).toBeNull();
 	});
+
+	test('Comic Vine error envelope (invalid key) -> null, logged', async () => {
+		const deps = makeDeps({
+			http: async () => ({ error: 'Invalid API Key', status_code: 100, results: [] }),
+			getKey: () => 'bad-key',
+		});
+		const result = await comicSpec.resolve(ctxFor({ title: 'Absolute Batman' }), deps);
+		expect(result).toBeNull();
+		expect(deps.logCalls.some(m => m.includes('Invalid API Key'))).toBe(true);
+	});
 });
 
 describe('comicSpec.sync — no id / no key', () => {
@@ -385,6 +395,17 @@ describe('comicSpec.sync — comicvine enrich', () => {
 		expect(deps.notifyCalls).toEqual([]);
 	});
 
+	test('Comic Vine error envelope (invalid key) -> null, notify + log', async () => {
+		const deps = makeDeps({
+			http: async () => ({ error: 'Invalid API Key', status_code: 100, results: [] }),
+			getKey: () => 'bad-key',
+		});
+		const result = await comicSpec.sync(ctxFor({ comicvine_id: '195824' }), deps);
+		expect(result).toBeNull();
+		expect(deps.notifyCalls.some(m => m.includes('Invalid API Key'))).toBe(true);
+		expect(deps.logCalls.some(m => m.includes('Invalid API Key'))).toBe(true);
+	});
+
 	test('fetches from GET /volume/4050-{id}/ with api_key + format=json', async () => {
 		let calledUrl = '';
 		const deps = makeDeps({
diff --git a/tests/library-controller.test.ts b/tests/library-controller.test.ts
index 4452c1c..7ca14fb 100644
--- a/tests/library-controller.test.ts
+++ b/tests/library-controller.test.ts
@@ -1,4 +1,5 @@
 import { describe, expect, test } from 'bun:test';
+import type { MediaTypeSpec } from 'packages/obsidian/src/library/types';
 import { bookSpec } from 'packages/obsidian/src/library/book';
 import { gameSpec } from 'packages/obsidian/src/library/game';
 import { LibraryController } from 'packages/obsidian/src/library/LibraryController';
@@ -421,3 +422,42 @@ describe('dry-run notify suppression (minor)', () => {
 		expect(logs.some(m => m.includes('«Test Manga» ch. 5 out'))).toBe(true);
 	});
 });
+
+describe('sync summary transparency', () => {
+	test('scanned + no-data counts surface in summary notice, not hidden behind a silent-looking 0/0', async () => {
+		const c = new LibraryController(fakePlugin());
+		const notices: string[] = [];
+		(c as any).notify = (msg: string) => notices.push(msg);
+		(c as any).makeDeps = () => ({
+			listNotes: async () => [{ path: 'Mangas/Test.md' }],
+			readNote: async () => 'content',
+			writeNote: async () => {},
+			sleep: async () => {},
+			log: () => {},
+			specDeps: fakeSpecDeps(),
+		});
+
+		// simulates e.g. a Comic Vine error-envelope: fetch "succeeds" (no throw) but spec.sync
+		// has no usable data -> counted as skippedNoData rather than a written/errors change
+		const noDataSpec: MediaTypeSpec = {
+			typeName: 'manga',
+			itemType: 'manga_item',
+			folderSettingKey: 'libraryMangaFolder',
+			enabledSettingKey: 'libraryMangaEnabled',
+			throttleMs: 0,
+			hasId: () => true,
+			isActive: () => true,
+			resolve: async () => null,
+			sync: async () => null,
+		};
+
+		const report = await c.syncType(noDataSpec, false);
+
+		expect(report.scanned).toBe(1);
+		expect(report.skippedNoData).toBe(1);
+		expect(notices.length).toBe(1);
+		expect(notices[0]).toContain('1 scanned');
+		expect(notices[0]).toContain('0 ok');
+		expect(notices[0]).toContain('1 no-data (see console)');
+	});
+});