tconbeer/harlequin

14.7

Adjusted Score

14.7

Raw Score

100%

Time Factor

2026-08-09

Last Push

6.3K

Stars

Python

Language

22.2K

Lines of Code

143

Files

312

Pattern Hits

2026-08-09

Scan Date

0.03

HC Hit Rate

What These Metrics Mean

Adjusted Score: Primary synthetic code indicator. Raw score normalised per 1,000 lines of code and multiplied by the temporal discount factor. This is the definitive comparative metric — use it to rank repositories by AI authorship density.
Raw Score: The unmodified sum of all severity-weighted, context-multiplied pattern match scores before temporal discounting. Reflects the absolute signal strength independent of when the repository was last active.
Time Factor: The temporal discount multiplier (0–100%) applied to the raw score. Repositories last updated before ChatGPT's launch (Nov 2022) receive a 5% factor. Full signal is only assigned to repositories active in the post-adoption era (Jan 2024+).
Pattern Hits: Total count of individual pattern matches across all files and categories. A high hit count with a low score may indicate a very large codebase with isolated AI snippets; a low count with a high score indicates dense, concentrated AI signatures.
HC Hit Rate: High+Critical pattern hits per file, averaged across the repository. This orthogonal signal catches repositories where a few files are densely packed with high-severity AI tells — a strong indicator even when the normalised score appears moderate due to codebase size.
Lines of Code / Files: Total lines and files analysed. The scanner examines 94 file extensions. These denominators are used to normalise the score, enabling fair comparison between repositories of vastly different sizes.

Score History

Longitudinal tracking requires multiple scan runs. Once this repository is re-scanned after new commits land, this chart will visualise how the synthetic code signal evolves over time — enabling you to detect whether AI authorship is growing, stabilising, or being actively corrected by human engineers.

No multi-scan history yet — run the scanner again to build trend data.

Severity Breakdown

Classifies detected patterns by their diagnostic confidence and structural impact. CRITICAL patterns (coefficient 10) represent definitive synthetic signatures — hallucinated imports, explicit LLM attribution metadata — virtually never produced by human authors. HIGH (5) indicates strong structural tells such as cross-file repetition or cross-linguistic idioms. MEDIUM (2) covers recognisable conversational padding and AI-specific vocabulary. LOW (1) captures subtle indicators like tautological comments and generic boilerplate that require density to carry independent signal.

CRITICAL 0HIGH 4MEDIUM 1LOW 307

Directory Score Breakdown

This horizontal bar chart decomposes the repository's raw synthetic code score by top-level directory, allowing you to pinpoint precisely which modules or components carry the highest AI authorship density. Directories with disproportionately high scores relative to their size warrant targeted manual review: concentrated AI signatures often trace back to mass-generated configuration layers, auto-ported test suites, LLM-scaffolded boilerplate classes, or entire subsystems authored under heavy copilot assistance. Use this view to prioritise your human code-review effort.

Pattern Findings

The scanner identified 312 distinct pattern matches across 11 syntactic categories. Each entry below represents a discrete location in the source code where the engine recorded a statistically significant AI authorship indicator. Expand any category row to inspect the individual file paths, line numbers, code snippets, and the lexical context (CODE, COMMENT, or STRING) in which each match was detected.

Reading the findings table: The Severity column indicates the diagnostic confidence level (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — comment-context matches receive a ×1.5 weight because LLMs systematically over-annotate. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier as dense clusters constitute far stronger evidence of synthetic authorship than isolated hits.

Unused Imports130 hits · 129 pts

Severity	File	Line	Context
LOW	tests/conftest.py	1	CODE
LOW	tests/unit_tests/test_statements.py	8	CODE
LOW	tests/unit_tests/conftest.py	1	CODE
LOW	tests/unit_tests/test_plugins.py	1	CODE
LOW	tests/unit_tests/test_import_hygiene.py	9	CODE
LOW	tests/unit_tests/test_s3_tree.py	1	CODE
LOW	tests/unit_tests/test_exception.py	1	CODE
LOW	tests/unit_tests/test_config.py	1	CODE
LOW	tests/unit_tests/test_query.py	1	CODE
LOW	tests/functional_tests/test_keys_app.py	1	CODE
LOW	tests/functional_tests/test_results_viewer.py	1	CODE
LOW	tests/functional_tests/test_keymap_vscode.py	1	CODE
LOW	tests/functional_tests/test_run_query_bar.py	1	CODE
LOW	tests/functional_tests/test_query_editor.py	1	CODE
LOW	tests/functional_tests/test_history_screen.py	1	CODE
LOW	tests/functional_tests/test_app.py	1	CODE
LOW	tests/functional_tests/test_keymap_from_config.py	1	CODE
LOW	tests/adapter_tests/test_duckdb.py	1	CODE
LOW	tests/adapter_tests/test_sqlite.py	1	CODE
LOW	scripts/catalog_lag.py	14	CODE
LOW	scripts/cold_start.py	18	CODE
LOW	src/harlequin_sqlite/catalog.py	1	CODE
LOW	src/harlequin_sqlite/catalog.py	17	CODE
LOW	src/harlequin_sqlite/adapter.py	1	CODE
LOW	src/harlequin_sqlite/__init__.py	1	CODE
LOW	src/harlequin_sqlite/__init__.py	2	CODE
LOW	src/harlequin_sqlite/completions.py	1	CODE
LOW	src/harlequin_sqlite/cli_options.py	1	CODE
LOW	src/harlequin_sqlite/interactions.py	1	CODE
LOW	src/harlequin_sqlite/interactions.py	6	CODE
LOW	src/harlequin_sqlite/interactions.py	10	CODE
LOW	src/harlequin_sqlite/interactions.py	11	CODE
LOW	src/harlequin_sqlite/interactions.py	11	CODE
LOW	src/harlequin/catalog.py	1	CODE
LOW	src/harlequin/catalog.py	7	CODE
LOW	src/harlequin/catalog.py	8	CODE
LOW	src/harlequin/keys_app.py	1	CODE
LOW	src/harlequin/options.py	1	CODE
LOW	src/harlequin/plugins.py	1	CODE
LOW	src/harlequin/catalog_cache.py	1	CODE
LOW	src/harlequin/config.py	1	CODE
LOW	src/harlequin/query.py	15	CODE
LOW	src/harlequin/config_wizard.py	1	CODE
LOW	src/harlequin/adapter.py	1	CODE
LOW	src/harlequin/copy_formats.py	1	CODE
LOW	src/harlequin/cache.py	7	CODE
LOW	src/harlequin/cache.py	7	CODE
LOW	src/harlequin/actions.py	1	CODE
LOW	src/harlequin/__init__.py	15	CODE
LOW	src/harlequin/__init__.py	15	CODE
LOW	src/harlequin/__init__.py	15	CODE
LOW	src/harlequin/__init__.py	20	CODE
LOW	src/harlequin/__init__.py	21	CODE
LOW	src/harlequin/__init__.py	22	CODE
LOW	src/harlequin/__init__.py	22	CODE
LOW	src/harlequin/__init__.py	23	CODE
LOW	src/harlequin/__init__.py	24	CODE
LOW	src/harlequin/__init__.py	24	CODE
LOW	src/harlequin/__init__.py	25	CODE
LOW	src/harlequin/copy_widgets.py	1	CODE
70 more matches not shown…

Hyper-Verbose Identifiers119 hits · 124 pts

Severity	File	Line	Snippet	Context
LOW	tests/conftest.py	165	def app_all_adapters_small_db(	CODE
LOW	tests/conftest.py	186	def _create_sqlite_db_from_data_dir(data_dir: Path, db_path: Path) -> None:	CODE
LOW	tests/unit_tests/test_completers.py	22	def test_completer_fixed_first(iris_completer: WordCompleter) -> None:	CODE
LOW	tests/unit_tests/test_completers.py	27	def test_completer_fuzzy_match(iris_completer: WordCompleter) -> None:	CODE
LOW	tests/unit_tests/test_completers.py	54	def test_extend_catalog_merges_by_default(parent_item: CatalogItem) -> None:	CODE
LOW	tests/unit_tests/test_completers.py	60	def test_extend_catalog_defer_merge(parent_item: CatalogItem) -> None:	CODE
LOW	tests/unit_tests/test_statements.py	119	def test_find_separators_agrees_with_split(script: str, expected: list[str]) -> None:	CODE
LOW	tests/unit_tests/test_statements.py	141	def test_find_separators_returns_character_columns() -> None:	CODE
LOW⚡	tests/unit_tests/test_statements.py	152	def test_find_separators_on_multiple_lines() -> None:	CODE
LOW⚡	tests/unit_tests/test_statements.py	157	def test_find_separators_are_sorted() -> None:	CODE
LOW⚡	tests/unit_tests/test_statements.py	165	def test_statements_are_indexed_in_order() -> None:	CODE
LOW	tests/unit_tests/test_statements.py	178	def test_dollar_quoted_body_is_not_split() -> None:	CODE
LOW	tests/unit_tests/test_plugins.py	22	def test_do_not_load_keymaps_that_duplicate_plugin_names() -> None:	CODE
LOW	tests/unit_tests/test_plugins.py	29	def test_plugin_load_failure_goes_to_stderr(	CODE
LOW	tests/unit_tests/test_import_hygiene.py	40	def test_headless_imports_do_not_load_the_tui(	CODE
LOW	tests/unit_tests/test_import_hygiene.py	52	def test_public_names_still_resolve() -> None:	CODE
LOW	tests/unit_tests/test_import_hygiene.py	93	def test_unknown_attribute_still_raises_attribute_error() -> None:	CODE
LOW	tests/unit_tests/test_exception.py	7	def test_pretty_print_warning_goes_to_stderr(	CODE
LOW	tests/unit_tests/test_config.py	64	def test_load_bad_keymap_raises(	CODE
LOW	tests/unit_tests/test_config.py	90	def test_load_default_profile(data_dir: Path, filename: str) -> None:	CODE
LOW	tests/unit_tests/test_config.py	126	def test_config_file_discovery(	CODE
LOW⚡	tests/unit_tests/test_query.py	24	def test_unlimited_asks_for_everything(self) -> None:	CODE
LOW⚡	tests/unit_tests/test_query.py	28	def test_plain_limit_asks_for_exactly_that_many(self) -> None:	CODE
LOW⚡	tests/unit_tests/test_query.py	31	def test_overflow_detection_asks_for_one_more(self) -> None:	CODE
LOW⚡	tests/unit_tests/test_query.py	37	def test_yields_one_result_per_statement(	CODE
LOW⚡	tests/unit_tests/test_query.py	45	def test_ddl_yields_no_cursor(self, connection: HarlequinConnection) -> None:	CODE
LOW	tests/unit_tests/test_query.py	61	def test_stops_at_the_first_error_by_default(	CODE
LOW	tests/unit_tests/test_query.py	71	def test_continues_past_an_error_when_asked(	CODE
LOW	tests/unit_tests/test_query.py	82	def test_applies_the_fetch_limit(self, connection: HarlequinConnection) -> None:	CODE
LOW	tests/unit_tests/test_query.py	90	def test_overflow_detection_fetches_one_extra_row(	CODE
LOW	tests/unit_tests/test_query.py	103	def test_returns_columns_and_rows(self, connection: HarlequinConnection) -> None:	CODE
LOW	tests/unit_tests/test_query.py	113	def test_a_query_that_matches_nothing_returns_zero_rows(	CODE
LOW	tests/unit_tests/test_query.py	125	def test_a_cursor_that_returns_none_has_no_backend(self) -> None:	CODE
LOW	tests/unit_tests/test_query.py	150	def test_rejects_a_statement_with_no_cursor(	CODE
LOW	tests/unit_tests/test_query.py	157	def test_the_row_cap_is_not_the_fetch_limit(	CODE
LOW	tests/unit_tests/test_query.py	175	def test_truncation_is_detected_from_one_extra_row(	CODE
LOW	tests/unit_tests/test_query.py	191	def test_an_unlimited_fetch_is_never_truncated(	CODE
LOW	tests/unit_tests/test_query.py	207	def test_a_raw_driver_exception_does_not_escape(self) -> None:	CODE
LOW	tests/unit_tests/test_query.py	221	def test_keyboard_interrupt_propagates(self) -> None:	CODE
LOW	tests/unit_tests/test_query.py	249	def test_every_shape_a_cursor_may_return_is_normalized(returned: Any) -> None:	CODE
LOW	tests/unit_tests/test_cli.py	323	def test_config_path_fron_env(	CODE
LOW	tests/unit_tests/test_cli.py	380	def test_sqlite_extension_not_supported(	CODE
LOW	tests/functional_tests/conftest.py	183	async def wait_for_filtered_workers(app: Harlequin) -> None:	CODE
LOW	tests/functional_tests/conftest.py	218	def transaction_button_visible() -> Callable[[Harlequin], bool]:	CODE
LOW	tests/functional_tests/test_results_viewer.py	87	async def test_data_truncated_with_tooltip(	CODE
LOW	tests/functional_tests/test_keymap_vscode.py	171	async def test_results_viewer_bindings(	CODE
LOW	tests/functional_tests/test_query_editor.py	355	async def test_selected_queries_split_on_character_columns(	CODE
LOW	tests/functional_tests/test_history_screen.py	65	async def test_history_screen_crash(	CODE
LOW	tests/functional_tests/test_cache.py	62	async def test_harlequin_loads_cache(cache: Cache, app: Harlequin) -> None:	CODE
LOW	tests/functional_tests/test_cache.py	77	async def test_harlequin_writes_cache(app: Harlequin) -> None:	CODE
LOW	tests/functional_tests/test_app.py	76	async def test_queries_do_not_crash_all_adapters(	CODE
LOW	tests/functional_tests/test_app.py	134	async def test_queries_do_not_crash(	CODE
LOW	tests/functional_tests/test_app.py	227	async def test_single_query_terminated_with_semicolon(	CODE
LOW	tests/functional_tests/test_app.py	345	async def test_adapter_raises_unexpected_error(	CODE
LOW	tests/functional_tests/test_data_catalog.py	154	async def test_double_click_inserts_node_into_editor(	CODE
LOW	tests/functional_tests/test_data_catalog.py	349	async def test_file_tree_refreshes_after_editor_save(	CODE
LOW	tests/functional_tests/test_data_catalog.py	385	async def test_file_tree_refreshes_after_export(	CODE
LOW	tests/functional_tests/test_data_catalog.py	439	async def test_reload_while_loader_is_fetching(	CODE
LOW	tests/functional_tests/test_keymap_from_config.py	31	async def test_results_viewer_bindings(	CODE
LOW	tests/adapter_tests/test_duckdb.py	283	def test_initialize_adapter_ignores_extra_kwargs() -> None:	CODE
59 more matches not shown…

Modern Structural Boilerplate20 hits · 20 pts

Severity	File	Line	Snippet	Context
LOW	tests/conftest.py	63	def set_locale_to_enUS() -> None:	CODE
LOW	tests/functional_tests/conftest.py	172	def set_paste(x: str) -> None:	CODE
LOW	src/harlequin/keys_app.py	396	def update_binding(new_binding: HarlequinKeyBinding \| None) -> None:	CODE
LOW	src/harlequin/keys_app.py	427	def update_keymap_name(self, message: ActiveKeymapFound) -> None:	CODE
LOW	src/harlequin/locale_manager.py	6	def set_locale(locale_config: str) -> None:	CODE
LOW	src/harlequin/cache.py	9	__all__ = ["BufferState", "Cache"]	CODE
LOW	src/harlequin/__init__.py	27	__all__ = [	CODE
LOW	src/harlequin/app.py	514	def update_limit_tooltip(self, message: Input.Changed) -> None:	CODE
LOW	src/harlequin/app.py	778	def update_transaction_button_label(self, message: TransactionModeChanged) -> None:	CODE
LOW	src/harlequin/app.py	799	def update_editor_completers(self, message: CompletersReady) -> None:	CODE
LOW	src/harlequin/app.py	1210	def update_completers(self, catalog: Catalog) -> None:	CODE
LOW	src/harlequin/app.py	1251	def update_schema_data(self) -> None:	CODE
LOW	src/harlequin/autocomplete/__init__.py	8	__all__ = [	CODE
LOW	src/harlequin/autocomplete/completers.py	61	def update_catalog(self, catalog: Catalog) -> None:	CODE
LOW	src/harlequin/components/__init__.py	11	__all__ = [	CODE
LOW	src/harlequin/components/run_query_bar.py	93	def set_not_responsive(self) -> None:	CODE
LOW	src/harlequin/components/run_query_bar.py	100	def set_responsive(self) -> None:	CODE
LOW⚡	src/harlequin/components/data_catalog/__init__.py	190	def update_database_tree(self, catalog: Catalog) -> None:	CODE
LOW⚡	src/harlequin/components/data_catalog/__init__.py	193	def update_file_tree(self) -> None:	CODE
LOW⚡	src/harlequin/components/data_catalog/__init__.py	197	def update_s3_tree(self) -> None:	CODE

Docstring Block Structure3 hits · 15 pts

Severity	File	Line	Snippet	Context
HIGH	src/harlequin/adapter.py	84	Executes query and returns a cursor (for a select stmt) or None. Raises HarlequinQueryError if the data	STRING
HIGH	src/harlequin/adapter.py	132	Exports data returned by query to a file or directory at path, using options. Args:	STRING
HIGH	src/harlequin/adapter.py	150	Parses text as one or more queries; returns text if parsing does not result in an error; otherwise retu	STRING

Deep Nesting14 hits · 13 pts

Severity	File	Line	Context
LOW	tests/conftest.py	186	CODE
LOW	scripts/export_screenshots.py	34	CODE
LOW	src/harlequin_sqlite/adapter.py	189	CODE
LOW	src/harlequin_sqlite/adapter.py	308	CODE
LOW	src/harlequin/config.py	200	CODE
LOW	src/harlequin/windows_timezone.py	17	CODE
LOW	src/harlequin/cli.py	158	CODE
LOW	src/harlequin/app.py	708	CODE
LOW	src/harlequin/app.py	809	CODE
LOW	src/harlequin/components/help_screen.py	40	CODE
LOW	src/harlequin/components/debug_info.py	229	CODE
LOW	src/harlequin/components/debug_info.py	239	CODE
LOW	src/harlequin/components/data_catalog/s3_tree.py	96	CODE
LOW	src/harlequin_duckdb/adapter.py	301	CODE

Excessive Try-Catch Wrapping14 hits · 12 pts

Severity	File	Line	Snippet	Context
LOW	src/harlequin/options.py	177	except Exception as e:	CODE
LOW	src/harlequin/query.py	134	except Exception as e:	CODE
LOW	src/harlequin/windows_timezone.py	58	except Exception as e:	CODE
LOW	src/harlequin/copy_widgets.py	36	except Exception as e:	CODE
LOW	src/harlequin/bindings.py	34	except Exception as e:	CODE
LOW	src/harlequin/app.py	1115	except Exception as e:	CODE
LOW	src/harlequin/app.py	1233	except Exception:	CODE
LOW	src/harlequin/app.py	1301	except Exception as e:	CODE
LOW	src/harlequin/app.py	1327	except Exception as e:	CODE
LOW	src/harlequin/app.py	1353	except Exception as e:	CODE
LOW	src/harlequin/app.py	1375	except Exception as e:	CODE
LOW	src/harlequin/components/debug_info.py	66	except Exception:	CODE
LOW	src/harlequin/components/debug_info.py	70	except Exception:	CODE
MEDIUM	src/harlequin/components/debug_info.py	63	def parse_info(self) -> List[DebugWidget]:	CODE

AI Structural Patterns7 hits · 6 pts

Severity	File	Line	Context
LOW	src/harlequin_sqlite/adapter.py	248	CODE
LOW	src/harlequin/options.py	301	CODE
LOW	src/harlequin/export.py	128	CODE
LOW	src/harlequin/cli.py	132	CODE
LOW	src/harlequin/app.py	187	CODE
LOW	src/harlequin/components/results_viewer.py	36	CODE
LOW	src/harlequin_duckdb/adapter.py	256	CODE

Cross-Language Confusion1 hit · 2 pts

Severity	File	Line	Snippet	Context
HIGH	src/harlequin/query.py	11	null, how a nested struct comes out) in two places, and the disagreement would	STRING

Fake / Example Data2 hits · 2 pts

Severity	File	Line	Snippet	Context
LOW	src/harlequin/options.py	138	placeholder = self.placeholder or getattr(other, "placeholder", None)	CODE
LOW	src/harlequin/options.py	353	placeholder = self.placeholder or getattr(other, "placeholder", None)	CODE

AI Slop Vocabulary1 hit · 2 pts

Severity	File	Line	Snippet	Context
LOW	src/harlequin/catalog_cache.py	30	# Never raise a TypeError, just use the repr	COMMENT

Over-Commented Block1 hit · 1 pts

Severity	File	Line	Snippet	Context
LOW	src/harlequin/components/data_catalog/database_tree.py	461	except WorkerCancelled:	COMMENT

Analysis Overview

What These Metrics Mean

Score History

Severity Breakdown

Directory Score Breakdown

Pattern Findings