Koray Tugberk GUBUR has created an extensive collection of 48 AI agentsβ€”custom ChatGPT tools designed for semantic SEO professionals.

πŸ“Š Quick Stats: 48 AI Agents | 9 Categories | All Free with ChatGPT Plus

πŸ“Œ Overview: The 9 Categories

These agents cover linguistic analysis, semantic extraction, entity mapping, topicality, sentiment processing, SEO auditing, data analysis, summarization, and technical generators.

πŸ“ 1. Linguistic & Syntactic Analysis (8 Agents)

These agents analyze text at the grammatical and structural level.

Algorithmic Authorship (Sentence Filterer)

What it does: Scans documents and identifies sentences starting with 'If', unnecessary words, or unclear nested statements.

Required Input: A document, article, or text block (minimum 500 words).

Use Cases: Editing, Proofreading, Document quality checks, Academic writing

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Tokenizer, Lemmatizer and Stemmer

What it does: Parses short texts into a detailed NLP table with lemmas, stems, POS tags, and dependency relations.

Required Input: Short text paragraph or sentence (up to 500 words).

Use Cases: SEO/content analysis, NLP debugging, Keyword research

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Syntax Tree Creator

What it does: Reveals grammatical structure by parsing paragraphs into sentences, clauses, and phrases with syntax trees.

Required Input: A paragraph or multiple sentences of well-formed English prose.

Use Cases: Syntax learning, SEO content refinement, Translation QA

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Contextless Word Remover

What it does: Removes stop words, vague fillers, and redundant phrases.

Required Input: Text content (article, paragraph, or document). Works best with 200+ words.

Use Cases: SEO editing, Conversion copy optimization

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Vocabulary Richness Auditor

What it does: Measures complex, varied language metrics like type/token ratio and syllable patterns.

Required Input: Text content (minimum 300 words for statistical significance).

Use Cases: SEO content optimization, Content quality auditing

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Metadiscourse Markers Auditor

What it does: Identifies markers that organize discourse, including frame markers and result markers.

Required Input: Article, essay, or long-form content with multiple paragraphs.

Use Cases: SEO content optimization, Content clarity & flow

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Question Logic Analyzer

What it does: Maps logical relationships between entities in questions.

Required Input: A question or set of questions. Can include FAQ lists.

Use Cases: Entity relationship analysis, SEO strategy, Content brief creation

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Translator (Context-based)

What it does: Translates English to Turkish while preserving SEO context and topical relevance.

Required Input: English source text with SEO context.

Use Cases: SEO translation, Content localization, Metadata optimization

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🧠 2. Semantic Analysis & Meaning Extraction (9 Agents)

These agents extract meaning, semantic roles, and conceptual relationships from text.

Frame Semantics Analyzer

What it does: Identifies predicates and frame elements to show how syntax connects to semantic roles.

Required Input: Paragraph or article text with action-oriented content.

Use Cases: SEO content analysis, Content optimization, SERP analysis

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Semantic Role Labeler

What it does: Marks AGENT, PATIENT, EXPERIENCER, and other roles to show 'who did what'.

Required Input: Sentences or paragraphs with clear action statements.

Use Cases: SEO content analysis, On-page optimization

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Word Meaning Extractor

What it does: Identifies all possible meanings of a word and highlights the one used in context.

Required Input: Target word plus surrounding context (sentence or paragraph).

Use Cases: Word-sense disambiguation, SEO keyword clarity

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Semantic Emphasizer

What it does: Highlights semantically important concepts with relevance and importance scores.

Required Input: Text content with clear topical focus.

Use Cases: SEO content analysis, Topical authority mapping

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Lexical Path Analyzer

What it does: Traces multi-step lexical paths like synonyms, antonyms, and hypernyms.

Required Input: Two words/concepts to find paths between.

Use Cases: Topical mapping, Content clustering, Internal linking

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Triple Generator

What it does: Converts paragraphs into subject-predicate-object triples with prominence scores.

Required Input: Paragraph or article text. Factual content yields best results.

Use Cases: Knowledge graph building, Topical authority mapping, Schema planning

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Microsemantics – Relevant Item Finder

What it does: Pinpoints the single most topically relevant content unit for a given phrase.

Required Input: Target keyword/phrase plus content to analyze.

Use Cases: Keyword targeting, Internal linking, Topical alignment

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Knowledge Domain Terms Extractor

What it does: Generates a 100+ term glossary for any topic with definitions and importance scores.

Required Input: Topic or domain name. Can include seed terms.

Use Cases: Topical map design, Entity-first SEO, Content briefing

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Entity Type Root, Rare, Unique Attribute Extractor

What it does: Extracts structured attributes (Root, Rare, Unique) for any entity type.

Required Input: Entity type (e.g., 'smartphone', 'lawyer', 'recipe').

Use Cases: Entity schema design, Faceted navigation, Taxonomy building

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πŸ”— 3. Entity & Knowledge Graph Oriented (8 Agents)

These agents focus on named entities and knowledge graph construction.

Named Entity Inserter

What it does: Enriches paragraphs by inserting missing but topically related entities.

Required Input: Text paragraph plus target topic.

Use Cases: Content enrichment, Topical authority building

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Named Entity Suggester

What it does: Uncovers contextually relevant entities and ranks them by prominence.

Required Input: Topic or content paragraph.

Use Cases: Content expansion, Topical authority, Entity gap analysis

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Named Entity Suggester (Person Type)

What it does: Builds shared contextual domains between subjects focusing on people and experts.

Required Input: Two topics to find connecting people.

Use Cases: Topical mapping, Content strategy, Digital PR, E-E-A-T building

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Which-Agent

What it does: Provides 'which one and why' comparisons for tools, assets, or concepts.

Required Input: Two or more options to compare plus context.

Use Cases: Product comparison, Tech choice, Strategy selection

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Who-Agent

What it does: Creates context-rich profiles of people linked to historical and professional landscapes.

Required Input: Person name plus optional context.

Use Cases: Biographical lookup, Expert profiling, Thought leadership mapping

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What-Agent

What it does: Creates consistent 8-sentence explanations for 'What is X?' questions.

Required Input: Concept, term, or entity name to define.

Use Cases: Concept glossaries, Training, Documentation, Featured snippets

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What it does: Builds entity-relationship maps for legal documents.

Required Input: Legal document, case summary, or structured legal data.

Use Cases: Content modeling, Information architecture, Legal analysis

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Irrelevant Attribute Auditor

What it does: Scans entities and flags sensitive, irrelevant, or unnecessary attributes.

Required Input: Entity list with attributes (CSV/JSON format).

Use Cases: Data cleaning, Bias auditing, ML feature review

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🎯 4. Topicality & Coverage Analysis (7 Agents)

These agents measure and optimize topical relevance and coverage gaps.

Topicality Scorer

What it does: Evaluates paragraph relevance to different topics with contextual scores (0-100).

Required Input: Paragraph or article plus target topic(s).

Use Cases: SEO content auditing, Competitor analysis, Brief validation

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Bridge Topic Suggester

What it does: Uncovers topical gaps in title tags and URLs to propose new topics.

Required Input: List of existing title tags, URLs, or topics (CSV preferred).

Use Cases: Topical gap analysis, Site architecture, Content roadmap

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Topic Clusterer

What it does: Automatically builds topical clusters from keyword lists using semantic similarity.

Required Input: Keyword list (CSV preferred). Include search volumes for prioritization.

Use Cases: Keyword research organization, Content silo structure

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Query Term Weight Calculator

What it does: Computes importance of query terms using lexical and BERT-based methods.

Required Input: Search query or list of queries.

Use Cases: Query intent analysis, SEO prioritization, Title optimization

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Title-Query Coverage Ratio Auditor

What it does: Measures how well page titles cover target queries.

Required Input: Spreadsheet/CSV with Page Title and Target Query columns.

Use Cases: Content audits, Migration QA, Metadata cleanup

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Contextual Vector Sharpener and Aligner

What it does: Rewrites context paragraphs to maximize semantic relevance to target queries.

Required Input: Current intro/context paragraph plus target query.

Use Cases: SEO intro optimization, Landing page relevance

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Context Paragraph Refresher

What it does: Revises existing text to be more context-rich with definitions and expert quotes.

Required Input: Existing paragraph plus topic focus.

Use Cases: SEO content refinement, B2B content, E-E-A-T enhancement

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πŸ’­ 5. Sentiment & Processing (2 Agents)

These agents analyze and optimize sentiment in customer feedback.

Comment Creator (Pros, Cons)

What it does: Generates structured sentiment summaries with recurring themes from customer comments.

Required Input: Customer reviews or comments.

Use Cases: Review mining, E-commerce optimization, Voice of customer

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Comment Sentiment Optimizer

What it does: Softens emotional extremes and amplifies constructive positivity in reviews.

Required Input: Review or comment text to optimize.

Use Cases: Reputation management, Comment polishing, Support scripts

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πŸ” 6. SEO & Search Quality Auditing (5 Agents)

These agents help diagnose ranking issues and audit content quality.

HCU Auditor

What it does: Evaluates content against Google's helpfulness, quality, and trust criteria.

Required Input: Article or page content. Include URL if available.

Use Cases: Quality checks, AI-content screening, HCU recovery

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Quality Update Auditor

What it does: Maps traffic data to specific Google updates with impact visualizations.

Required Input: Traffic data export (GA/GSC CSV) covering multiple updates.

Use Cases: Traffic forensics, Recovery diagnostics, Client reporting

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Spam Hit Detector

What it does: Detects if a website was hit by Google spam or link spam updates.

Required Input: Traffic/ranking CSV data with dates. Include backlink data if available.

Use Cases: Ranking loss analysis, Penalty diagnosis, Recovery tracking

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Publication Frequency Auditor

What it does: Analyzes publication speed and URL structure from sitemap files.

Required Input: Sitemap export or URL list with dates (CSV format).

Use Cases: Editorial planning, Site architecture, Competitor research

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Image Auditor

What it does: Evaluates how well images match textual concepts and topical scores.

Required Input: Image file or URL plus associated text/topic.

Use Cases: Ad creatives, E-commerce, Image-text alignment

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πŸ“Š 7. Data, Logs & Performance Analysis (4 Agents)

These agents process log files, keyword datasets, and competitive metrics.

Data Analyzer (Unique Queries)

What it does: Identifies patterns in keyword datasets like query lengths and company names.

Required Input: Keyword/query dataset in CSV format.

Use Cases: Keyword research, Intent mapping, FAQ discovery

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Log File Analyzer

What it does: Processes crawl log files to show Googlebot discovery patterns.

Required Input: Server log file or crawl log export.

Use Cases: Crawl behavior analysis, Internal linking evaluation

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Outranking Cost Calculator

What it does: Visualizes the difficulty and cost of outranking competitors.

Required Input: Target keyword plus competitor URLs.

Use Cases: SEO budgeting, Opportunity mapping, Client pitches

Open Agent β†’

What it does: Compares two websites' backlink profiles with DR bin visualizations.

Required Input: Two domain names or backlink exports for comparison.

Use Cases: Competitor link analysis, Authority growth tracking

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πŸ“‹ 8. Content Structure & Summarization (3 Agents)

These agents extract key facts, generate safe content, and optimize site structure.

Key Fact Summarizer

What it does: Extracts critical information and ranks factual statements by prominence.

Required Input: Article, report, or document with factual content.

Use Cases: Entity & attribute mapping, Content briefing

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Safe Answer Generator

What it does: Analyzes questions from multiple expert angles with safe explanations.

Required Input: Question or topic to analyze.

Use Cases: Multi-angle SEO analysis, Strategy decision, Safe content

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What it does: Proposes SEO-friendly footer structures with 5 columns and contextual anchors.

Required Input: Site structure overview or existing navigation.

Use Cases: Footer architecture, Internal linking, Site navigation

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βš™οΈ 9. Technical Generators (2 Agents)

These agents generate semantic HTML and structured product data.

Semantic HTML Math Formula Creator

What it does: Converts math formulas into semantic <math> elements.

Required Input: Math formula (LaTeX, plain text, or image).

Use Cases: Equation publishing, Accessibility, Technical documentation

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Product Specs Generator

What it does: Transforms product info into structured lists of 40+ ordered specifications.

Required Input: Product name, description, or existing specs.

Use Cases: Buyer guides, E-commerce optimization, Comparison pages

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πŸš€ How to Access and Use These AI Agents

  1. ChatGPT Plus subscription – All agents are custom GPTs requiring Plus access
  2. Click the agent link – Opens directly in ChatGPT
  3. Provide the required input – Each agent specifies what data to provide
  4. Review and apply results – Use the output for your SEO workflow

❓ Frequently Asked Questions

The agents themselves are free, but you need a ChatGPT Plus subscription ($20/month) to access custom GPTs.

For content optimization, start with the Vocabulary Richness Auditor and Semantic Emphasizer. For topical mapping, try the Knowledge Domain Terms Extractor and Topic Clusterer.