{"uid":"cap_aWgfMCYPsN_QAhrnd2Q8j","slug":"grokzilla-ai-detector-12b1f104","name":"Grokzilla AI Detector","description":"Estimate whether text (or a web page's text) is AI-written using a trained classifier: about 78% accurate on a held-out benchmark (not a guarantee). Uncertain results suggest a rerun on a longer section (300+ words); tell phrases are only a secondary 'possible AI influence' signal.","url":"https://grokzilla.shop/api/skills/ai-detector?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"url":{"type":"string"},"text":{"type":"string"}}},"responseSchema":{"type":"json","example":{"band":[0.5334,1],"skill":"ai_detector","method":"stylometry","caveats":["Detection is probabilistic and should not be used as the only evidence that a text was or was not written by a person.","ai_likelihood is a stylometric score from 0 to 1, not a calibrated probability. The band widens when there is less text and is not a statistical confidence interval.","A low score means these surface patterns are weak. It does not prove a person wrote the text.","Weights were chosen on a small set of public-domain prose, poems, and synthetic assistant-style paragraphs. Fixture accuracy is not a field accuracy."],"signals":{"burstiness":0.3542,"line_count":1,"verse_like":false,"hapax_ratio":0.8841,"sentence_count":8,"contraction_rate":3.2967,"type_token_ratio":0.7582,"stock_phrase_hits":3,"average_word_length":4.3846,"repeated_ngram_rate":0,"stock_phrases_found":["it's worth noting","a testament to","in conclusion"],"sentence_length_mean":11.375,"stock_phrase_per_100":3.2967,"lexical_features_used":true,"punctuation_diversity":4,"line_length_uniformity":null,"sentence_length_variance":16.2344},"verdict":"possible_ai_influence","sections":[{"result":"no_signal","section":"rhythm","evidence":["8 sentences, sentence-length CV 0.35 (AI <= 0.34, human >= 0.55)","rhythm is in the overlap range where human and prompted-AI text both sit"],"section_weight":0.1},{"result":"ai_sign","section":"vocabulary","evidence":["tell-phrase weight 2.4 (2.64 per 100 words, 138-entry list)","tells: it's worth noting, a testament to, in conclusion","lexical diversity MTLD 105 (informational, not scored)","surprisal mean 3.21, variance 2.15, spike 0.40; rare-word share 0.033; MATTR 0.834; Zipf slope deviation 0.63","tell phrases are dense; possible AI influence (secondary signal)"],"section_weight":0.4},{"result":"no_signal","section":"voice_structure","evidence":["ai cues: hedging (2 hedges)","human cues: none","first person, names, dialogue and sensory detail are not counted either way"],"section_weight":0.3},{"result":"no_signal","section":"resolution","evidence":["rhythm vs vocabulary: no_overlap (no_signal / ai_sign)","vocabulary vs voice_structure: no_overlap (ai_sign / no_signal)","voice_structure vs rhythm: no_overlap (no_signal / no_signal)","tell phrases present but not confirmed by two sections; secondary signal only"],"section_weight":0.2}],"classifier":{"verdict":"uncertain","model_kind":"logistic_regression","threshold_ai":0.585,"model_version":"2026-10-13","probability_ai":0.362,"threshold_human":0.3233},"word_count":91,"content_type":"opinion","rubric_score":0.4,"tell_phrases":[{"count":1,"phrase":"it's worth noting","tell_weight":0.9},{"count":1,"phrase":"a testament to","tell_weight":0.9},{"count":1,"phrase":"in conclusion","tell_weight":0.6}],"ai_likelihood":0.7822,"possible_ai_influence":true}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_HTadnIDMlfwzsV29b72oi","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Detects whether a given piece of text or content was generated by AI, returning a classification result via a pay-per-call microservice.","exampleAgentPrompt":"Can you check if this article text was written by AI or a human? Here's the content: 'The rapid advancement of renewable energy technologies has fundamentally altered the global energy landscape...'","exampleUseCases":[{"title":"Academic plagiarism / AI-writing check","prompt":"I need to verify whether this student essay was AI-generated before grading it — here's the full text: 'Climate change represents one of the most pressing challenges facing modern society...' Can you run it through the AI detector?"},{"title":"Content authenticity gate for publishing","prompt":"Before we publish this guest blog post, can you scan it and tell me if it was written by AI? The piece starts with: 'In today's fast-paced digital economy, businesses must adapt or perish...'"},{"title":"Automated moderation pipeline for user submissions","prompt":"We're getting user-submitted product reviews and I want to flag any that appear to be AI-generated — can you analyze this review: 'This product exceeded all my expectations. The build quality is exceptional and delivery was prompt.'"}],"resultDescription":"Returns a JSON object with an 'ok' boolean indicating success and the endpoint path, along with AI detection classification results indicating whether the submitted content is AI-generated or human-written.","failureModes":["Missing required 'input' field returns validation error","Malformed request body causes 400-level error","Payment not included or rejected results in 402 Payment Required response","Empty or null content body may return indeterminate result","Network timeout if content is excessively large"],"whenToPreferThis":"Choose this endpoint when you need a lightweight, pay-per-call AI content detection microservice with no subscription commitment, particularly inside autonomous agent workflows that require machine-to-machine payment via x402/USDC. Ideal for pipelines where cost-per-check needs to be tightly controlled at $0.01 per call.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-27T13:03:44.343Z","isFirstParty":false,"canonicalSlug":"grokzilla-ai-detector-12b1f104"}