Repository Analysis

vapor/vapor

💧 A server-side Swift HTTP web framework.

14.8 Low AI signal View on GitHub

Analysis Overview

This report presents the forensic synthetic code analysis of vapor/vapor, a Swift project with 26,192 GitHub stars. SynthScan v2.0 examined 36,393 lines of code across 272 source files, recording 646 pattern matches distributed across 3 syntactic categories. The overall adjusted score of 14.8 places this repository in the Low AI signal 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).

14.8
Adjusted Score
14.8
Raw Score
100%
Time Factor
2026-08-28
Last Push
26.2K
Stars
Swift
Language
36.4K
Lines of Code
272
Files
646
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 0HIGH 0MEDIUM 0LOW 646

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 646 distinct pattern matches across 3 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.

Fake / Example Data430 hits · 338 pts
SeverityFileLineSnippetContext
LOWTests/VaporTests/Utilities/long-test-file.txt1Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magnCODE
LOWTests/VaporTests/Utilities/long-test-file.txt1Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magnCODE
LOWTests/VaporTests/Utilities/long-test-file.txt3Duis autem vel eum iriure dolor in hendrerit in vulputate velit esse molestie consequat, vel illum dolore eu feugiat nulCODE
LOWTests/VaporTests/Utilities/long-test-file.txt3Duis autem vel eum iriure dolor in hendrerit in vulputate velit esse molestie consequat, vel illum dolore eu feugiat nulCODE
LOWTests/VaporTests/Utilities/long-test-file.txt7Nam liber tempor cum soluta nobis eleifend option congue nihil imperdiet doming id quod mazim placerat facer possim assuCODE
LOWTests/VaporTests/Utilities/long-test-file.txt7Nam liber tempor cum soluta nobis eleifend option congue nihil imperdiet doming id quod mazim placerat facer possim assuCODE
LOWTests/VaporTests/Utilities/long-test-file.txt11At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipCODE
LOWTests/VaporTests/Utilities/long-test-file.txt11At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipCODE
LOWTests/VaporTests/Utilities/long-test-file.txt13Consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voCODE
LOWTests/VaporTests/Utilities/long-test-file.txt13Consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voCODE
LOWTests/VaporTests/Utilities/long-test-file.txt15Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magnCODE
LOWTests/VaporTests/Utilities/long-test-file.txt15Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magnCODE
LOWTests/VaporTests/Utilities/long-test-file.txt17Duis autem vel eum iriure dolor in hendrerit in vulputate velit esse molestie consequat, vel illum dolore eu feugiat nulCODE
LOWTests/VaporTests/Utilities/long-test-file.txt17Duis autem vel eum iriure dolor in hendrerit in vulputate velit esse molestie consequat, vel illum dolore eu feugiat nulCODE
LOWTests/VaporTests/Utilities/long-test-file.txt21Nam liber tempor cum soluta nobis eleifend option congue nihil imperdiet doming id quod mazim placerat facer possim assuCODE
LOWTests/VaporTests/Utilities/long-test-file.txt21Nam liber tempor cum soluta nobis eleifend option congue nihil imperdiet doming id quod mazim placerat facer possim assuCODE
LOWTests/VaporTests/Utilities/long-test-file.txt25At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipCODE
LOWTests/VaporTests/Utilities/long-test-file.txt25At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipCODE
LOWTests/VaporTests/Utilities/long-test-file.txt27Consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voCODE
LOWTests/VaporTests/Utilities/long-test-file.txt27Consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voCODE
LOWTests/VaporTests/Utilities/long-test-file.txt29Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magnCODE
LOWTests/VaporTests/Utilities/long-test-file.txt29Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magnCODE
LOWTests/VaporTests/Utilities/long-test-file.txt31Duis autem vel eum iriure dolor in hendrerit in vulputate velit esse molestie consequat, vel illum dolore eu feugiat nulCODE
LOWTests/VaporTests/Utilities/long-test-file.txt31Duis autem vel eum iriure dolor in hendrerit in vulputate velit esse molestie consequat, vel illum dolore eu feugiat nulCODE
LOWTests/VaporTests/Utilities/long-test-file.txt35Nam liber tempor cum soluta nobis eleifend option congue nihil imperdiet doming id quod mazim placerat facer possim assuCODE
LOWTests/VaporTests/Utilities/long-test-file.txt35Nam liber tempor cum soluta nobis eleifend option congue nihil imperdiet doming id quod mazim placerat facer possim assuCODE
LOWTests/VaporTests/Utilities/long-test-file.txt39At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipCODE
LOWTests/VaporTests/Utilities/long-test-file.txt39At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipCODE
LOWTests/VaporTests/Utilities/long-test-file.txt41Consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voCODE
LOWTests/VaporTests/Utilities/long-test-file.txt41Consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voCODE
LOWTests/VaporTests/Utilities/long-test-file.txt43Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magnCODE
LOWTests/VaporTests/Utilities/long-test-file.txt43Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magnCODE
LOWTests/VaporTests/Utilities/long-test-file.txt45Duis autem vel eum iriure dolor in hendrerit in vulputate velit esse molestie consequat, vel illum dolore eu feugiat nulCODE
LOWTests/VaporTests/Utilities/long-test-file.txt45Duis autem vel eum iriure dolor in hendrerit in vulputate velit esse molestie consequat, vel illum dolore eu feugiat nulCODE
LOWTests/VaporTests/Utilities/long-test-file.txt49Nam liber tempor cum soluta nobis eleifend option congue nihil imperdiet doming id quod mazim placerat facer possim assuCODE
LOWTests/VaporTests/Utilities/long-test-file.txt49Nam liber tempor cum soluta nobis eleifend option congue nihil imperdiet doming id quod mazim placerat facer possim assuCODE
LOWTests/VaporTests/Utilities/long-test-file.txt53At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipCODE
LOWTests/VaporTests/Utilities/long-test-file.txt53At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipCODE
LOWTests/VaporTests/Utilities/long-test-file.txt55Consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voCODE
LOWTests/VaporTests/Utilities/long-test-file.txt55Consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voCODE
LOWTests/VaporTests/Utilities/long-test-file.txt57Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magnCODE
LOWTests/VaporTests/Utilities/long-test-file.txt57Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magnCODE
LOWTests/VaporTests/Utilities/long-test-file.txt59Duis autem vel eum iriure dolor in hendrerit in vulputate velit esse molestie consequat, vel illum dolore eu feugiat nulCODE
LOWTests/VaporTests/Utilities/long-test-file.txt59Duis autem vel eum iriure dolor in hendrerit in vulputate velit esse molestie consequat, vel illum dolore eu feugiat nulCODE
LOWTests/VaporTests/Utilities/long-test-file.txt63Nam liber tempor cum soluta nobis eleifend option congue nihil imperdiet doming id quod mazim placerat facer possim assuCODE
LOWTests/VaporTests/Utilities/long-test-file.txt63Nam liber tempor cum soluta nobis eleifend option congue nihil imperdiet doming id quod mazim placerat facer possim assuCODE
LOWTests/VaporTests/Utilities/long-test-file.txt67At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipCODE
LOWTests/VaporTests/Utilities/long-test-file.txt67At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipCODE
LOWTests/VaporTests/Utilities/long-test-file.txt69Consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voCODE
LOWTests/VaporTests/Utilities/long-test-file.txt69Consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voCODE
LOWTests/VaporTests/Utilities/long-test-file.txt71Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magnCODE
LOWTests/VaporTests/Utilities/long-test-file.txt71Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magnCODE
LOWTests/VaporTests/Utilities/long-test-file.txt73Duis autem vel eum iriure dolor in hendrerit in vulputate velit esse molestie consequat, vel illum dolore eu feugiat nulCODE
LOWTests/VaporTests/Utilities/long-test-file.txt73Duis autem vel eum iriure dolor in hendrerit in vulputate velit esse molestie consequat, vel illum dolore eu feugiat nulCODE
LOWTests/VaporTests/Utilities/long-test-file.txt77Nam liber tempor cum soluta nobis eleifend option congue nihil imperdiet doming id quod mazim placerat facer possim assuCODE
LOWTests/VaporTests/Utilities/long-test-file.txt77Nam liber tempor cum soluta nobis eleifend option congue nihil imperdiet doming id quod mazim placerat facer possim assuCODE
LOWTests/VaporTests/Utilities/long-test-file.txt81At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipCODE
LOWTests/VaporTests/Utilities/long-test-file.txt81At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipCODE
LOWTests/VaporTests/Utilities/long-test-file.txt83Consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voCODE
LOWTests/VaporTests/Utilities/long-test-file.txt83Consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voCODE
370 more matches not shown…
Over-Commented Block215 hits · 198 pts
SeverityFileLineSnippetContext
LOWNOTICES.txt1COMMENT
LOWTests/VaporTests/RequestTests.swift361 }COMMENT
LOWTests/VaporTests/RequestTests.swift381// request.body.drain { part inCOMMENT
LOWTests/VaporTests/RequestTests.swift401// This was taken from AsyncHTTPClients's AsyncRequestTests.swift code.COMMENT
LOWTests/VaporTests/HTTPMediaTypeSetTests.swift61 HTTPMediaType(type: "b", subType: "-", parameters: ["A": "a"]),COMMENT
LOWTests/VaporTests/HTTPMediaTypeSetTests.swift81 #expect(mediaSet.contains(HTTPMediaType(type: "a", subType: "-")))COMMENT
LOWTests/VaporTests/ErrorTests.swift141 }COMMENT
LOWTests/VaporTests/RouteTests.swift421 }COMMENT
LOWTests/VaporTests/EnvironmentTests.swift1@testable import VaporCOMMENT
LOWTests/VaporTests/MiddlewareTests.swift401 #expect(span.attributes["http.request.method"]?.toSpanAttribute() == "GET")COMMENT
LOWTests/VaporTests/URLEncodedFormTests.swift21 #expect(user.pets.last == "Foo")COMMENT
LOWTests/VaporTests/URLEncodedFormTests.swift41 #expect(user.foos[0] == .baz)COMMENT
LOWTests/VaporTests/URLEncodedFormTests.swift361 #expect(result.contains("dict[b]=2"))COMMENT
LOWTests/VaporTests/URLEncodedFormTests.swift381 }COMMENT
LOWTests/VaporTests/URLEncodedFormTests.swift421 ).encode(usersToEncode)COMMENT
LOWTests/VaporTests/URLEncodedFormTests.swift461 let tanner = User(name: "Tanner", age: 23, pets: ["Zizek", "Foo"], dict: ["a": 1, "b": 2], foos: [.baz], nums: [COMMENT
LOWTests/VaporTests/ServerTests.swift21import NIOHTTPTypesHTTP1COMMENT
LOWTests/VaporTests/ServerTests.swift41 // app.post("gzip") { $0.body.string ?? "" }COMMENT
LOWTests/VaporTests/ServerTests.swift61 // Issue.record("Missing response.body")COMMENT
LOWTests/VaporTests/ServerTests.swift81 // app.post("gzip") { $0.body.string ?? "" }COMMENT
LOWTests/VaporTests/ServerTests.swift101 //COMMENT
LOWTests/VaporTests/ServerTests.swift121 // let httpClient = HTTPClient(eventLoopGroupProvider: .singleton, configuration: clientConfig)COMMENT
LOWTests/VaporTests/ServerTests.swift141 // unsupportedNoncompressedRequest.method = .POSTCOMMENT
LOWTests/VaporTests/ServerTests.swift161 // } else {COMMENT
LOWTests/VaporTests/ServerTests.swift181 // request.body = compressedPayloadCOMMENT
LOWTests/VaporTests/ServerTests.swift201 // let clientKeyPath = Bundle.module.url(forResource: "expired", withExtension: "key") else {COMMENT
LOWTests/VaporTests/ServerTests.swift221 // #expect(peerCerts == [cert])COMMENT
LOWTests/VaporTests/ServerTests.swift241 // struct TestResponse: Content {COMMENT
LOWTests/VaporTests/ServerTests.swift261 //COMMENT
LOWTests/VaporTests/ServerTests.swift281 // }COMMENT
LOWTests/VaporTests/ServerTests.swift301 //COMMENT
LOWTests/VaporTests/ServerTests.swift321 //COMMENT
LOWTests/VaporTests/ServerTests.swift341 // let unsupportedCompressedResponse = try await httpClient.get("http://localhost:\(port)/compressed"COMMENT
LOWTests/VaporTests/ServerTests.swift361 //COMMENT
LOWTests/VaporTests/ServerTests.swift381 // app.http.server.configuration.tlsConfiguration = serverConfigCOMMENT
LOWTests/VaporTests/ServerTests.swift401 // let httpClient = HTTPClient(eventLoopGroupProvider: .singleton, configuration: httpClientConfig)COMMENT
LOWTests/VaporTests/ServerTests.swift421 // #expect(supportedUncompressedResponse.headers.first(name: HTTPField.Name.contentEncoding.canonicalCOMMENT
LOWTests/VaporTests/ServerTests.swift441 // enum WriterError: Error {COMMENT
LOWTests/VaporTests/ServerTests.swift461 // }COMMENT
LOWTests/VaporTests/ServerTests.swift481 //COMMENT
LOWTests/VaporTests/ServerTests.swift501 // }COMMENT
LOWTests/VaporTests/ServerTests.swift521 // })COMMENT
LOWTests/VaporTests/ServerTests.swift541 // promise.fail(error)COMMENT
LOWTests/VaporTests/ServerTests.swift561 // req.headers[.init("test")!] = "a"COMMENT
LOWTests/VaporTests/ServerTests.swift581 // app.on(.post, "echo", body: .stream) { request -> Response inCOMMENT
LOWTests/VaporTests/ServerTests.swift601 // let port = try #require(app.http.server.shared.localAddress?.port, "Failed to get port")COMMENT
LOWTests/VaporTests/ServerTests.swift621 // typealias Response = HTTPClient.ResponseCOMMENT
LOWTests/VaporTests/ServerTests.swift641 // _ = try await HTTPClient.shared.execute(COMMENT
LOWTests/VaporTests/ServerTests.swift661 //COMMENT
LOWTests/VaporTests/ServerTests.swift681 // }COMMENT
LOWTests/VaporTests/ServerTests.swift701 // app.on(.post, "hello", body: .stream) { req -> Response inCOMMENT
LOWTests/VaporTests/ServerTests.swift721 //COMMENT
LOWTests/VaporTests/ServerTests.swift741 // @Test("Test Request Body Backpressure")COMMENT
LOWTests/VaporTests/ServerTests.swift761 // bytesTheServerSaw.wrappingIncrement(by: bytes.readableBytes, ordering: .relaxed)COMMENT
LOWTests/VaporTests/ServerTests.swift781 // typealias Response = VoidCOMMENT
LOWTests/VaporTests/ServerTests.swift801 // headers: [:],COMMENT
LOWTests/VaporTests/ServerTests.swift901 }COMMENT
LOWTests/VaporTests/ServerTests.swift921 //COMMENT
LOWTests/VaporTests/ServerTests.swift941 // arguments: ["vapor", "serve", "--port", "8123", "--unix-socket", "/path/to/socket"]COMMENT
LOWTests/VaporTests/ServerTests.swift961 // try await checkForError(app)COMMENT
155 more matches not shown…
Example Usage Blocks1 hit · 2 pts
SeverityFileLineSnippetContext
LOWSources/Vapor/Environment/Environment+Secret.swift39 /// Example usage:COMMENT