facet-rs/facet

5.1

Adjusted Score

5.1

Raw Score

100%

Time Factor

2026-08-28

Last Push

2.6K

Stars

Rust

Language

129.5K

Lines of Code

533

Files

573

Pattern Hits

2026-08-29

Scan Date

0.00

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

This chart maps the temporal evolution of the adjusted synthetic code score across successive scan runs. An upward trajectory indicates ongoing incorporation of AI-generated code or expanding LLM-assisted scaffolding; a stable or declining trajectory may reflect active human refactoring, code removal, or the adoption of stricter authorship policies. The dashed secondary line (right axis) independently tracks total raw pattern hit count, which can diverge from the normalised score when codebase size changes significantly between scans.

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 2HIGH 0MEDIUM 29LOW 542

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 573 distinct pattern matches across 10 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.

Over-Commented Block513 hits · 498 pts

Severity	File	Line	Snippet	Context
LOW	.config/nextest.toml	41	# Run tests under valgrind with leak checking	COMMENT
LOW	facet-pretty/src/color.rs	1	//! Color palettes and terminal theme detection for pretty-printing.	COMMENT
LOW	facet-pretty/src/color.rs	101	///	COMMENT
LOW	facet-pretty/src/lib.rs	1	#![warn(missing_docs)]	COMMENT
LOW	facet-pretty/src/lib.rs	21	//! name: String,	COMMENT
LOW	facet-pretty/src/printer.rs	21	use crate::color::ColorGenerator;	COMMENT
LOW	facet-pretty/src/printer.rs	41	/// Background (#1a1b26)	COMMENT
LOW	facet-pretty/src/printer.rs	81	// ========================================================================	COMMENT
LOW	facet-macros-impl/src/derive.rs	1	use crate::{ToTokens, *};	COMMENT
LOW	facet-macros-impl/src/on_error.rs	1	use crate::{Delimiter, Group, Ident, Span, TokenStream, TokenTree};	COMMENT
LOW	facet-macros-impl/src/lib.rs	1	// unsynn's Parser API intentionally returns its large Error by value.	COMMENT
LOW	facet-macros-impl/src/lib.rs	41	mod process_struct;	COMMENT
LOW	facet-macros-impl/src/extension.rs	81	} else {	COMMENT
LOW	facet-macros-impl/src/extension.rs	121	}	COMMENT
LOW	facet-macros-impl/src/plugin.rs	1	//! Plugin system for facet derive macro.	COMMENT
LOW	facet-macros-impl/src/plugin.rs	201	/// This filters out the plugin-system-specific attributes before passing	COMMENT
LOW	facet-macros-impl/src/plugin.rs	1321	}	COMMENT
LOW	facet-macros-impl/src/process_enum.rs	1401	#[automatically_derived]	COMMENT
LOW	facet-macros-impl/src/process_enum.rs	1421	#attributes_call	COMMENT
LOW	facet-macros-impl/src/process_struct.rs	1	//! Struct processing and vtable generation for the Facet derive macro.	COMMENT
LOW	facet-macros-impl/src/process_struct.rs	21	//!	COMMENT
LOW	facet-macros-impl/src/process_struct.rs	41		COMMENT
LOW	facet-macros-impl/src/process_struct.rs	181	});	COMMENT
LOW	facet-macros-impl/src/process_struct.rs	481	// Uses prelude aliases for compact output (𝟋VtE, 𝟋VtD)	COMMENT
LOW	facet-macros-impl/src/process_struct.rs	2581	// Proxy inherent impl (outside the Facet impl so generic params are in scope)	COMMENT
LOW	facet-macros-impl/src/attr_grammar/mod.rs	1	//! Attribute grammar system for declarative extension attribute parsing.	COMMENT
LOW	facet-macros-impl/src/attr_grammar/dispatch_attr.rs	781	// No value: for Option types, return None; otherwise error	COMMENT
LOW	facet-macros-impl/src/attr_grammar/dispatch_attr.rs	901	return quote_spanned! { span =>	COMMENT
LOW	facet-macros-impl/src/attr_grammar/dispatch_attr.rs	981	/// A single type in a `list(shape_type)` payload - everything up to the next	COMMENT
LOW	facet-macros-impl/src/attr_grammar/dispatch_attr.rs	1001	/// items:	COMMENT
LOW	facet-macros-impl/src/attr_grammar/make_parse_attr.rs	61		COMMENT
LOW	facet-macros-impl/src/attr_grammar/make_parse_attr.rs	281	#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]	COMMENT
LOW	facet-macros-impl/src/attr_grammar/make_parse_attr.rs	341	/// If true, generate `<$ty as ::core::default::Default>::default()` when no value provided.	COMMENT
LOW	facet-macros-impl/src/attr_grammar/make_parse_attr.rs	361	/// A comma-separated list of types, each converted to a Shape reference.	COMMENT
LOW	facet-macros-impl/src/attr_grammar/make_parse_attr.rs	581	}	COMMENT
LOW	facet-macros-impl/src/attr_grammar/make_parse_attr.rs	941	// For builtin mode, skip deriving Facet entirely because the derive macro	COMMENT
LOW	facet-macros-impl/src/attr_grammar/make_parse_attr.rs	1241	@variants { #(#variants_meta),* }	COMMENT
LOW	facet-macros-impl/src/attr_grammar/make_parse_attr.rs	1261	// fn is_empty(s: &String) -> bool { ... }	COMMENT
LOW	facet-macros-impl/src/attr_grammar/make_parse_attr.rs	1321	}};	COMMENT
LOW	facet-macros-impl/src/attr_grammar/make_parse_attr.rs	1341	quote! {	COMMENT
LOW	facet-macros-impl/src/attr_grammar/make_parse_attr.rs	1401	// import the Attr enum (dependency direction: facet depends on facet-core).	COMMENT
LOW	facet-testhelpers/src/lib.rs	1	#![warn(missing_docs)]	COMMENT
LOW	facet-testhelpers/src/lib.rs	21	//! fn my_test() {	COMMENT
LOW	facet-testhelpers/src/lib.rs	161	///	COMMENT
LOW	facet-showcase/src/lib.rs	1	//! Unified showcase infrastructure for facet format crates.	COMMENT
LOW	facet-showcase/src/output.rs	1	//! Output mode detection and configuration.	COMMENT
LOW	facet-macros/src/lib.rs	1	//! [![Coverage Status](https://coveralls.io/repos/github/facet-rs/facet-macros/badge.svg?branch=main)](https://coverall	COMMENT
LOW	facet-macros/src/lib.rs	21	#[doc(hidden)]	COMMENT
LOW	facet-macros/src/lib.rs	41	/// Internal proc macro for unified attribute dispatch.	COMMENT
LOW	facet-macros/src/lib.rs	61	/// Internal proc macro for attribute error messages.	COMMENT
LOW	facet-macros/src/lib.rs	101	}	COMMENT
LOW	facet-macros/src/lib.rs	121	/// 3. Call each registered plugin's code generator	COMMENT
LOW	facet-macros/src/lib.rs	141	#[doc(hidden)]	COMMENT
LOW	facet-macros/src/lib.rs	161	///	COMMENT
LOW	facet-macro-template/src/lib.rs	1	//! # Facet Macro Template	COMMENT
LOW	docs/content/reference/container-attributes.md	141		COMMENT
LOW	facet-validate/src/lib.rs	1	//! Validation attributes for facet.	COMMENT
LOW	facet-validate/src/lib.rs	21	//! pub contact_email: String,	COMMENT
LOW	facet-validate/src/lib.rs	41	//! \| `min_length` \| `validate::min_length = 1` \| String, Vec, slices \|	COMMENT
LOW	facet-validate/src/lib.rs	101	///	COMMENT
453 more matches not shown…

Decorative Section Separators24 hits · 72 pts

Severity	File	Line	Snippet	Context
MEDIUM	facet-reflect/tests/poke/at_path.rs	8	// ── Test types ──────────────────────────────────────────────────────	COMMENT
MEDIUM	facet-reflect/tests/poke/at_path.rs	35	// ── Success: struct field mutation ───────────────────────────────────	COMMENT
MEDIUM	facet-reflect/tests/poke/at_path.rs	74	// ── Success: list element mutation ──────────────────────────────────	COMMENT
MEDIUM	facet-reflect/tests/poke/at_path.rs	95	// ── Success: enum variant field mutation ─────────────────────────────	COMMENT
MEDIUM	facet-reflect/tests/poke/at_path.rs	136	// ── Success: empty path returns root ────────────────────────────────	COMMENT
MEDIUM	facet-reflect/tests/poke/at_path.rs	149	// ── Error: root shape mismatch ──────────────────────────────────────	COMMENT
MEDIUM	facet-reflect/tests/poke/at_path.rs	161	// ── Error: field out of bounds ──────────────────────────────────────	COMMENT
MEDIUM	facet-reflect/tests/poke/at_path.rs	182	// ── Error: list index out of bounds ─────────────────────────────────	COMMENT
MEDIUM	facet-reflect/tests/poke/at_path.rs	208	// ── Error: variant mismatch ─────────────────────────────────────────	COMMENT
MEDIUM	facet-reflect/tests/poke/at_path.rs	229	// ── Error: unsupported step kinds ───────────────────────────────────	COMMENT
MEDIUM	facet-reflect/tests/peek/at_path.rs	6	// ── Test types ──────────────────────────────────────────────────────	COMMENT
MEDIUM	facet-reflect/tests/peek/at_path.rs	44	// ── Success: struct field ───────────────────────────────────────────	COMMENT
MEDIUM	facet-reflect/tests/peek/at_path.rs	81	// ── Success: list index ─────────────────────────────────────────────	COMMENT
MEDIUM	facet-reflect/tests/peek/at_path.rs	101	// ── Success: enum variant + field ───────────────────────────────────	COMMENT
MEDIUM	facet-reflect/tests/peek/at_path.rs	134	// ── Success: Option ─────────────────────────────────────────────────	COMMENT
MEDIUM	facet-reflect/tests/peek/at_path.rs	150	// ── Success: Box (pointer deref) ────────────────────────────────────	COMMENT
MEDIUM	facet-reflect/tests/peek/at_path.rs	168	// ── Success: map ────────────────────────────────────────────────────	COMMENT
MEDIUM	facet-reflect/tests/peek/at_path.rs	186	// ── Success: empty path returns root ────────────────────────────────	COMMENT
MEDIUM	facet-reflect/tests/peek/at_path.rs	198	// ── Error: root shape mismatch ──────────────────────────────────────	COMMENT
MEDIUM	facet-reflect/tests/peek/at_path.rs	211	// ── Error: wrong step kind ──────────────────────────────────────────	COMMENT
MEDIUM	facet-reflect/tests/peek/at_path.rs	243	// ── Error: field out of bounds ──────────────────────────────────────	COMMENT
MEDIUM	facet-reflect/tests/peek/at_path.rs	264	// ── Error: list index out of bounds ─────────────────────────────────	COMMENT
MEDIUM	facet-reflect/tests/peek/at_path.rs	291	// ── Error: enum variant mismatch ────────────────────────────────────	COMMENT
MEDIUM	facet-reflect/tests/peek/at_path.rs	313	// ── Error: option is None ───────────────────────────────────────────	COMMENT

Structural Annotation Overuse15 hits · 28 pts

Severity	File	Line	Snippet	Context
LOW	facet-macros-impl/src/process_enum.rs	11	/// NOTE: This function generates code that uses short aliases from the 𝟋 prelude.	COMMENT
LOW	facet-macros-impl/src/process_enum.rs	41	/// NOTE: This function generates code that uses short aliases from the 𝟋 prelude.	COMMENT
LOW⚡	docs/content/reference/field-attributes.md	379	// Step 1: Create a transparent proxy that wraps String	COMMENT
LOW⚡	docs/content/reference/field-attributes.md	384	// Step 2: Implement TryFrom for deserialization (Proxy → Color)	COMMENT
LOW⚡	docs/content/reference/field-attributes.md	393	// Step 3: Implement TryFrom for serialization (Color → Proxy)	COMMENT
LOW⚡	docs/content/reference/field-attributes.md	402	// Step 4: Use the proxy attribute on your field	COMMENT
LOW⚡	facet-solver/tests/integration/solver.rs	472	// Step 1: Probe to find configuration	COMMENT
LOW⚡	facet-solver/tests/integration/solver.rs	481	// Step 2: Deserialize using resolved config	COMMENT
LOW⚡	facet-solver/tests/integration/solver.rs	509	// Step 1: Probe to find configuration	COMMENT
LOW⚡	facet-solver/tests/integration/solver.rs	518	// Step 2: Deserialize using resolved config	COMMENT
LOW	facet-reflect/docs/partial-ownership-redesign.md	280	### Step 1: Add `iset.unset(idx)` in `begin_nth_struct_field`	COMMENT
LOW	facet-reflect/docs/partial-ownership-redesign.md	297	### Step 2: Verify `end()` already sets iset	COMMENT
LOW	facet-reflect/docs/partial-ownership-redesign.md	307	### Step 3: Simplify drop logic	COMMENT
LOW	facet-reflect/docs/partial-ownership-redesign.md	339	### Step 4: Remove `current_child` from Tracker variants	COMMENT
LOW	facet-reflect/docs/partial-ownership-redesign.md	349	### Step 5: Rename `is_init` to `state`	COMMENT

Hallucination Indicators2 hits · 20 pts

Severity	File	Line	Snippet	Context
CRITICAL	facet-reflect/src/peek/set.rs	103	let iter_init_with_value_fn = self.def.vtable.iter_vtable.init_with_value.unwrap();	CODE
CRITICAL	facet-reflect/src/peek/map.rs	148	let iter_init_with_value_fn = self.def.vtable.iter_vtable.init_with_value.unwrap();	CODE

AI Slop Vocabulary5 hits · 14 pts

Severity	File	Line	Snippet	Context
LOW	facet-solver/src/lib.rs	1395	/// # Why not just use `see_key()` results?	COMMENT
MEDIUM	facet-macro-parse/src/generic_params.rs	438	// Compare string representations for robust assertion	COMMENT
MEDIUM	facet-macro-parse/src/generic_params.rs	449	// Compare string representations for robust assertion	COMMENT
MEDIUM	facet-core/src/types/specialization.rs	24	/// It wraps a value and is used in conjunction with trait implementations that leverage	COMMENT
MEDIUM	facet-core/src/types/specialization.rs	36	/// trait implementations that leverage Rust's method resolution rules to select different	COMMENT

Verbosity Indicators4 hits · 9 pts

Severity	File	Line	Snippet	Context
LOW⚡	facet-solver/tests/integration/solver.rs	472	// Step 1: Probe to find configuration	COMMENT
LOW⚡	facet-solver/tests/integration/solver.rs	481	// Step 2: Deserialize using resolved config	COMMENT
LOW⚡	facet-solver/tests/integration/solver.rs	509	// Step 1: Probe to find configuration	COMMENT
LOW⚡	facet-solver/tests/integration/solver.rs	518	// Step 2: Deserialize using resolved config	COMMENT

Fake / Example Data7 hits · 8 pts

Severity	File	Line	Snippet	Context
LOW	facet-pretty/tests/integration/pretty_print.rs	41	street: "123 Main St".to_string(),	CODE
LOW	facet-pretty/examples/pretty_basic.rs	20	street: "123 Main St".to_string(),	CODE
LOW	facet-pretty/examples/pretty_showcase.rs	341	name: "Acme Corp".into(),	CODE
LOW	facet-pretty/examples/pretty_showcase.rs	343	street: "123 Main St".into(),	CODE
LOW	facet-reflect/tests/partial/misc.rs	1334	.set("John Doe".to_string())?	CODE
LOW	facet-reflect/tests/partial/misc.rs	1344	name: "John Doe".to_string(),	CODE
LOW	facet-reflect/src/partial/mod.rs	32	//! partial = partial.set_field("street", "123 Main St")?;	COMMENT

Self-Referential Comments1 hit · 3 pts

Severity	File	Line	Snippet	Context
MEDIUM	scripts/lldb-wrapper.sh	5	# Create a temp script that conditionally shows backtrace	COMMENT

Redundant / Tautological Comments1 hit · 2 pts

Severity	File	Line	Snippet	Context
LOW	scripts/lldb-crash-handler.py	34	# Check if stopped due to signal (crash)	COMMENT

Deep Nesting1 hit · 1 pts

Severity	File	Line	Snippet	Context
LOW	scripts/lldb-crash-handler.py	10		CODE

Analysis Overview

What These Metrics Mean

Score History

Severity Breakdown

Directory Score Breakdown

Pattern Findings