Repository Analysis

reactiveui/refit

The automatic type-safe REST library for .NET Core, Xamarin and .NET. Heavily inspired by Square's Retrofit library, Refit turns your REST API into a live interface.

2.6 Likely human-written View on GitHub

Analysis Overview

This report presents the forensic synthetic code analysis of reactiveui/refit, a C# project with 9,540 GitHub stars. SynthScan v2.0 examined 99,768 lines of code across 916 source files, recording 236 pattern matches distributed across 5 syntactic categories. The overall adjusted score of 2.6 places this repository in the Likely human-written band.

The scanner applied 160+ deterministic lexical heuristics, multi-line block detectors, abstract syntax tree depth profilers, and a cross-file Jaccard similarity matrix to construct a statistically normalised synthetic code estimate. All matches are individually weighted by severity coefficient and contextual multiplier before summation, and the resulting headline score is temporally discounted to account for the repository's development history relative to the commercial emergence of large language model coding tooling (November 2022 onward).

2.6
Adjusted Score
2.6
Raw Score
100%
Time Factor
2026-07-14
Last Push
9.5K
Stars
C#
Language
99.8K
Lines of Code
916
Files
236
Pattern Hits
2026-07-14
Scan Date
0.01
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 0HIGH 6MEDIUM 0LOW 230

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 236 distinct pattern matches across 5 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 Block223 hits · 223 pts
SeverityFileLineSnippetContext
LOWtools/generate-publicapi.sh1#!/usr/bin/env bashCOMMENT
LOWtools/generate-publicapi.sh21# Each (project, TFM) pair is independent — `dotnet format` builds an in-memoryCOMMENT
LOW…eStubGenerator.Shared/Parser.Request.ParameterKinds.cs101 /// it through <c>string.Format("{0}", value)</c>, which is <c>ToString()</c> for a non-formattable value, so theCOMMENT
LOW…rfaceStubGenerator.Shared/Parser.Request.HttpMethod.cs41 private static string ResolveCustomHttpVerb(INamedTypeSymbol attributeClass) =>COMMENT
LOWsrc/InterfaceStubGenerator.Shared/Emitter.Inline.cs21COMMENT
LOWsrc/InterfaceStubGenerator.Shared/Emitter.Inline.cs621COMMENT
LOWsrc/InterfaceStubGenerator.Shared/Emitter.Inline.cs641COMMENT
LOW…c/InterfaceStubGenerator.Shared/Emitter.Inline.Path.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOWsrc/InterfaceStubGenerator.Shared/Emitter.Testing.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOWsrc/InterfaceStubGenerator.Shared/Emitter.Testing.cs21COMMENT
LOWsrc/InterfaceStubGenerator.Shared/Emitter.Testing.cs41COMMENT
LOW…c/InterfaceStubGenerator.Shared/Emitter.Constraints.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOWsrc/InterfaceStubGenerator.Shared/IsExternalInit.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOW…rfaceStubGenerator.Shared/Parser.Request.Parameters.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOW…rfaceStubGenerator.Shared/Parser.Request.Parameters.cs261 /// <param name="type">The declared parameter type.</param>COMMENT
LOWsrc/InterfaceStubGenerator.Shared/Emitter.Helpers.cs241 {{methodIndent}}/// <inheritdoc />COMMENT
LOW…aceStubGenerator.Shared/Emitter.Inline.Query.Values.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOW…tubGenerator.Shared/Emitter.Inline.Query.Dictionary.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOW…nterfaceStubGenerator.Shared/Emitter.Inline.Content.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOWsrc/InterfaceStubGenerator.Shared/Parser.Request.cs161 /// <returns><see langword="true"/> for POST, PUT and PATCH.</returns>COMMENT
LOW…/InterfaceStubGenerator.Shared/Parser.Request.Query.cs301 : attribute.ConstructorArguments[0].Value as ITypeSymbol;COMMENT
LOW…aceStubGenerator.Shared/Emitter.Inline.Query.Object.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOW…erfaceStubGenerator.Shared/Parser.Request.Multipart.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOW…rfaceStubGenerator.Shared/Emitter.Inline.FormFields.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOW…ceStubGenerator.Shared/Parser.Request.Query.Objects.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOW…ceStubGenerator.Shared/Parser.Request.Query.Objects.cs121 /// <summary>Tries to flatten a query object's public readable properties into compile-time descriptors.</summary>COMMENT
LOWsrc/InterfaceStubGenerator.Shared/Parser.Adapters.cs161 // implement the adapter interface, so this lookup always resolves.COMMENT
LOW…erfaceStubGenerator.Shared/Parser.InlineEligibility.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOW…ceStubGenerator.Shared/Emitter.Inline.ParameterInfo.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOW…erfaceStubGenerator.Shared/InterfaceStubGeneratorV2.cs441 bool EmitGeneratedCodeMarkers,COMMENT
LOW…c/InterfaceStubGenerator.Shared/Parser.Request.Path.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOW…erfaceStubGenerator.Shared/Emitter.Inline.Multipart.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOW…bGenerator.Shared/Models/QueryObjectCollectionModel.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOW…eStubGenerator.Shared/Models/PathObjectBindingModel.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOWsrc/InterfaceStubGenerator.Shared/Models/MethodModel.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOW…rfaceStubGenerator.Shared/Models/MultipartPartModel.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOW…eStubGenerator.Shared/Models/NamedAttributeArgument.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOW…c/InterfaceStubGenerator.Shared/Models/RequestModel.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOW…faceStubGenerator.Shared/Models/QueryParameterModel.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOW…InterfaceStubGenerator.Shared/Models/InterfaceModel.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOW…erfaceStubGenerator.Shared/Models/MultipartPartKind.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOW…aceStubGenerator.Shared/Models/QueryDictionaryModel.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOW…ceStubGenerator.Shared/Models/EnumFormatMemberModel.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOW…ceStubGenerator.Shared/Models/RequestParameterModel.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOW…bGenerator.Shared/Models/InterfaceGenerationContext.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOW…bGenerator.Shared/Models/InterfaceGenerationContext.cs21/// <param name="SupportsSpanEscape">Whether the target exposes <c>Uri.EscapeDataString(ReadOnlySpan&lt;char&gt;)</c> (nCOMMENT
LOW…faceStubGenerator.Shared/Models/QueryConverterModel.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOW…tubGenerator.Shared/Models/QueryObjectPropertyModel.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOW…eStubGenerator.Shared/Models/InterfacePropertyModel.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOW…StubGenerator.Shared/Models/ParameterAttributeModel.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOW…eStubGenerator.Shared/Models/InlineValueFormatModel.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOW…InterfaceStubGenerator.Shared/Models/FormFieldModel.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOWsrc/InterfaceStubGenerator.Shared/Polyfills/Range.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOWsrc/InterfaceStubGenerator.Shared/Polyfills/Index.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOWsrc/tests/Refit.Testing.Tests/User.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOWsrc/tests/Refit.Tests/IDeferredCallApi.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOWsrc/tests/Refit.Tests/IBoringCrudApi.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOWsrc/tests/Refit.Tests/IGenericMethodKeyFixture.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOW…s/Refit.Tests/INonGenericInterfaceWithGenericMethod.cs1// Copyright (c) 2019-2026 ReactiveUI and Contributors. All rights reserved.COMMENT
LOWsrc/tests/Refit.Tests/ReflectionTests.cs41 /// <param name="value2">Integer route parameter.</param>COMMENT
163 more matches not shown…
Cross-File Repetition6 hits · 30 pts
SeverityFileLineSnippetContext
HIGH…/tests/Refit.GeneratorTests/QueryParameterTypeTests.cs0using system.threading.tasks; using refit; namespace refitgeneratortest; public interface igeneratedclient { {{body}} }STRING
HIGH…c/tests/Refit.GeneratorTests/PathParameterTypeTests.cs0using system.threading.tasks; using refit; namespace refitgeneratortest; public interface igeneratedclient { {{body}} }STRING
HIGH…ratorTests/RequestGenerationCoverageTests.Multipart.cs0using system.threading.tasks; using refit; namespace refitgeneratortest; public interface igeneratedclient { {{body}} }STRING
HIGH…ts/Refit.GeneratorTests/Incremental/InheritanceTest.cs0#nullable enabled using system; using system.collections.generic; using system.linq; using system.net.http; using systemSTRING
HIGH…ts/Refit.GeneratorTests/Incremental/IncrementalTest.cs0#nullable enabled using system; using system.collections.generic; using system.linq; using system.net.http; using systemSTRING
HIGH…tests/Refit.GeneratorTests/Incremental/FunctionTest.cs0#nullable enabled using system; using system.collections.generic; using system.linq; using system.net.http; using systemSTRING
Fake / Example Data4 hits · 4 pts
SeverityFileLineSnippetContext
LOWsrc/tests/Refit.Tests/RequestBuilderTests.cs283 new JsonLineRecord { Id = "125", Name = "Acme Corp" }CODE
LOW…Refit.Tests/RestServiceIntegrationTests.RequestBody.cs168 new() { Id = "125", Name = "Acme Corp" }CODE
LOW…/tests/Refit.Tests/HttpClientFactoryExtensionsTests.cs360 client.DefaultRequestHeaders.Authorization = new("Bearer", "placeholder");CODE
LOW…/tests/Refit.Tests/HttpClientFactoryExtensionsTests.cs384 client.DefaultRequestHeaders.Authorization = new("Bearer", "placeholder");CODE
Hyper-Verbose Identifiers2 hits · 2 pts
SeverityFileLineSnippetContext
LOW…rks/Refit.Benchmarks/StaticValueHttpResponseHandler.cs11public class StaticValueHttpResponseHandler(string response, HttpStatusCode code) : HttpMessageHandlerCODE
LOW…arks/Refit.Benchmarks/StaticFileHttpResponseHandler.cs9public class StaticFileHttpResponseHandler : HttpMessageHandlerCODE
Example Usage Blocks1 hit · 2 pts
SeverityFileLineSnippetContext
LOWtools/generate-publicapi.sh29# Usage:COMMENT