--- /dev/null
+<?php
+/**
+ * @copyright Copyright (C) 2010-2024, the Friendica project
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace Friendica\Module\Api\Mastodon\Accounts;
+
+use Friendica\Core\Protocol;
+use Friendica\DI;
+use Friendica\Model\Contact;
+use Friendica\Module\BaseApi;
+
+/**
+ * @see https://docs.joinmastodon.org/methods/accounts/#lookup
+ */
+class Lookup extends BaseApi
+{
+ /**
+ * @throws \Friendica\Network\HTTPException\InternalServerErrorException
+ */
+ protected function rawContent(array $request = [])
+ {
+ $this->checkAllowedScope(self::SCOPE_READ);
+ $uid = self::getCurrentUserID();
+
+ $request = $this->getRequest([
+ 'acct' => '', // The username or Webfinger address to lookup.
+ ], $request);
+
+ if (empty($request['acct'])) {
+ $this->logAndJsonError(404, $this->errorFactory->RecordNotFound());
+ }
+ $contact = Contact::getByURL($request['acct'], null, ['id', 'network', 'failed', 'blocked']);
+ if (empty($contact) || ($contact['network'] == Protocol::PHANTOM) || $contact['failed'] || $contact['blocked']) {
+ $this->logAndJsonError(404, $this->errorFactory->RecordNotFound());
+ }
+
+ $this->jsonExit(DI::mstdnAccount()->createFromContactId($contact['id'], $uid));
+ }
+}
'/accounts/{id:\d+}/note' => [Module\Api\Mastodon\Accounts\Note::class, [ R::POST]],
'/accounts/{id:\d+}/remove_from_followers' => [Module\Api\Mastodon\Unimplemented::class, [ R::POST]], // not supported
'/accounts/familiar_followers' => [Module\Api\Mastodon\Unimplemented::class, [R::GET ]], // not supported
- '/accounts/lookup' => [Module\Api\Mastodon\Unimplemented::class, [R::GET ]], // not supported
+ '/accounts/lookup' => [Module\Api\Mastodon\Accounts\Lookup::class, [R::GET ]],
'/accounts/relationships' => [Module\Api\Mastodon\Accounts\Relationships::class, [R::GET ]],
'/accounts/search' => [Module\Api\Mastodon\Accounts\Search::class, [R::GET ]],
'/accounts/update_credentials' => [Module\Api\Mastodon\Accounts\UpdateCredentials::class, [R::PATCH ]],