@@ -6,12 +6,13 @@ import { getSqliteDatabaseFactory, withSqliteDatabase } from '@ccusage/internal/
 import { createFixture } from 'fs-fixture';
 import { logger } from '../../logger.ts';
 import { createAgentPricingContext, defineAgentLogLoader } from '../shared.ts';
+import { hasReadonlySqliteSupport } from '../sqlite.ts';
 import { loadHermesUsageEntries } from './parser.ts';
 import { detectHermesStateDb } from './paths.ts';
 import { calculateHermesCost } from './pricing.ts';
 
 export async function detectHermes(): Promise<boolean> {
-	return detectHermesStateDb();
+	return hasReadonlySqliteSupport() && detectHermesStateDb();
 }
 
 function createHermesPricingContext(
 
@@ -7,6 +7,7 @@ import { Result } from '@praha/byethrow';
 import { createFixture } from 'fs-fixture';
 import { logger } from '../../logger.ts';
 import { getExistingDirectories, normalizePathList } from '../path-list.ts';
+import { hasReadonlySqliteSupport } from '../sqlite.ts';
 
 const DEFAULT_OPENCODE_PATH = path.join(homedir(), '.local/share/opencode');
 export const OPENCODE_CONFIG_DIR_ENV = 'OPENCODE_DATA_DIR';
@@ -113,7 +114,7 @@ export async function detectOpenCodeSources(openCodePath: string): Promise<boole
 		OPENCODE_MESSAGES_DIR_NAME,
 	);
 	return (
-		hasOpenCodeDatabase(openCodePath) ||
+		(hasReadonlySqliteSupport() && hasOpenCodeDatabase(openCodePath)) ||
 		(await hasFileRecursive(messagesDir, { extension: '.json' }))
 	);
 }
 
@@ -1,8 +1,12 @@
 import type { SqliteDatabase } from '@ccusage/internal/sqlite';
-import { withSqliteDatabase } from '@ccusage/internal/sqlite';
+import { getSqliteDatabaseFactory, withSqliteDatabase } from '@ccusage/internal/sqlite';
 import { Result } from '@praha/byethrow';
 import { logger } from '../logger.ts';
 
+export function hasReadonlySqliteSupport(): boolean {
+	return getSqliteDatabaseFactory(logger.warn) != null;
+}
+
 export function loadReadonlySqliteRows<T>(
 	dbPath: string | null | undefined,
 	errorMessage: string,