listModels method

@override Future<List<String>> listModels(String apiKey)

Models suitable for chat / completion, newest first. Returns an empty list for an unset / invalid key. Each provider filters out embeddings / vision / audio-only models so the dropdown isn't flooded with irrelevant entries.

Implementation

@override
Future<List<String>> listModels(String apiKey) async {
  if (apiKey.isEmpty) return const [];
  final res = await _http.get(
    Uri.parse('$_baseUrl/models'),
    headers: {
      'x-api-key': apiKey,
      'anthropic-version': _apiVersion,
    },
  ).timeout(_timeout);
  if (res.statusCode >= 400) return const [];
  final body = jsonDecode(res.body) as Map<String, Object?>;
  final data = body['data'] as List<Object?>? ?? const [];
  final ids = <String>[];
  for (final m in data) {
    if (m is! Map<String, Object?>) continue;
    final modelId = m['id'] as String?;
    if (modelId != null) ids.add(modelId);
  }
  // Newest first — `claude-opus-4-7` should land before
  // `claude-3-5-sonnet`. The API already returns this order; sort
  // by id descending to normalise.
  ids.sort((a, b) => b.compareTo(a));
  return ids;
}