SEO, website development and Generative Engine Optimization specialist, based in Belo Horizonte, Brazil. I have worked professionally with SEO since 2007 and founded Lucas Ferraz SEO, an agency that serves companies across Brazil. My work sits on two layers: being found on Google and being the name an AI assistant recommends.
- Technical notes, studies and research logs at lucasferraz.com
- Author of A Empresa que a IA Recomenda (Brazilian Portuguese, 2026, ISBN 978-65-02-23078-7)
- Open data from my studies at lucasferraz.com/estudos, under CC BY 4.0
- The tools below are the same ones I use in my own audits, published as they are
Links. Website · Blog · Press · Agency · LinkedIn · YouTube · X · Instagram
| Repository | What it does |
|---|---|
| citability-lint | Mechanical citability check for text: length band, vague openings, unsourced numbers, AI clichés |
| chunk-boundary-lint | Checks whether the first paragraph of each section stands on its own when extracted |
| page-to-ai-markdown | Shows what an AI crawler reads from a page without JavaScript, as markdown |
| llms-txt-lint | Validates the structure of an llms.txt file |
| anti-citation-directives-check | Scans HTML for nosnippet, max-snippet:0, noarchive and data-nosnippet |
| ai-bots-list | Open, versioned list of AI bots (search and training) plus a robots.txt checker |
| ai-crawler-log-parser | Finds and classifies AI bot hits in server access logs |
| citation-round-logger | Logs AI citation rounds and calculates brand share of voice |
| ai-readiness-check | Scores a site's technical readiness for AI search: llms.txt, AI bots in robots.txt, entity schema, edge probes |
| geo-lint-action | GitHub Action that runs these GEO checks on every pull request |
| Repository | What it does |
|---|---|
| jsonld-graph-check | Validates JSON-LD @graph integrity: duplicate @id, dangling references, isolated nodes |
| faq-schema-parity-check | Compares the visible FAQ in the HTML with the FAQPage JSON-LD |
| structured-data-json-ld | LocalBusiness JSON-LD template for structured data |
| heading-structure-lint | Heading hierarchy with no skipped levels and a single H1 |
| snippet-pixel-measure | Estimates title and meta description width in pixels, not characters |
| og-image-check | Checks that a URL's og:image exists and reports its real dimensions |
| keyword-density-report | Keyword density and most frequent n-grams for Brazilian Portuguese text |
| entity-sameas-check | Audits Organization and Person sameAs: dead profiles, Wikidata cross-check, @id consistency |
| internal-link-audit | Internal link crawler: orphans, click depth, repeated links per text, generic anchors, nofollow |
| sitemap-similarity-check | Finds near-duplicate pages, repeated sections and similar titles across a sitemap |
| sitemap-lastmod-audit | Checks whether sitemap lastmod dates are real or generated at build time |
| Repository | What it does |
|---|---|
| ab-test-significance | Statistical significance of an A/B test with a small sample |
| gsc-cannibalization-finder | Finds Search Console queries split across two or more URLs of the same site |
| ai-referrer-report | GA4 sessions and conversions from AI assistants, by real referrer only |
| Repository | What it does |
|---|---|
| awesome-generative-engine-optimization | Curated, verified list of primary sources on GEO: AI crawler docs, standards, papers, tools and datasets |
| free-open-source-seo-tools | Free and open source SEO tools by task, with license, last activity and honest limits |
| geo-measurement-protocol | Open protocol to measure brand citation across AI search surfaces: prompts, rounds, refusals, share of voice |
| schema-org-templates-br | JSON-LD templates for Brazilian service businesses: clinics, law, accounting, real estate and more |
| a-empresa-que-a-ia-recomenda | Companion materials for my book: checklists, llms.txt, robots.txt and entity JSON-LD (not the book text) |
| Repository | What it does |
|---|---|
| llm-api-python | Ready-to-use Python scripts to send a prompt and receive the reply from 13 AI APIs: ChatGPT, Claude, Gemini, Grok, Perplexity, DeepSeek, Mistral, Groq, OpenRouter, Qwen, Kimi, Maritaca and Ollama |
| Repository | What it does |
|---|---|
| wordpress-functions | Snippets for a theme's functions.php: cleanup, image optimization, reCAPTCHA v3 on login |
| wordpress-security-tips | Hardening snippets: functions.php, .htaccess and Cloudflare WAF rules |
| privacy-policy-disclaimer-without-wordpress-plugin | Cookie consent for WordPress in one file for functions.php, no plugin: LGPD, GDPR, CCPA/CPRA, Google Consent Mode v2, embed blocking and consent log |
| facilitated-routines-wordpress-plugin | Planned WordPress plugin to automate repetitive maintenance tasks (no code yet) |
Every repository has a README in English and in Brazilian Portuguese. Bug reports and suggestions are welcome through each repository's Issues.
For SEO, GEO or website projects, the way in is the agency, Lucas Ferraz SEO.
Português (Brasil)
Especialista em SEO, criação de sites e Generative Engine Optimization, sediado em Belo Horizonte. Atuo profissionalmente com SEO desde 2007 e fundei a Lucas Ferraz SEO, agência que atende empresas de todo o Brasil. Meu trabalho tem duas camadas: ser encontrado no Google e ser o nome que um assistente de IA recomenda.
- Notas técnicas, estudos e registros de pesquisa em lucasferraz.com
- Autor de A Empresa que a IA Recomenda (2026, ISBN 978-65-02-23078-7)
- Dados abertos dos meus estudos em lucasferraz.com/estudos, sob CC BY 4.0
- As ferramentas acima são as mesmas que uso nas minhas auditorias, publicadas como estão
Links. Site · Blog · Imprensa · Agência · LinkedIn · YouTube · X · Instagram
- GEO e busca com IA. citability-lint, chunk-boundary-lint, page-to-ai-markdown, llms-txt-lint, anti-citation-directives-check, ai-bots-list, ai-crawler-log-parser, citation-round-logger, ai-readiness-check e geo-lint-action (GitHub Action que roda essas checagens em pull request).
- SEO técnico e dados estruturados. jsonld-graph-check, faq-schema-parity-check, structured-data-json-ld, heading-structure-lint, snippet-pixel-measure, og-image-check, keyword-density-report, entity-sameas-check, internal-link-audit, sitemap-similarity-check e sitemap-lastmod-audit.
- Medição. ab-test-significance, gsc-cannibalization-finder e ai-referrer-report.
- Guias, listas e modelos. awesome-generative-engine-optimization (fontes primárias de GEO, verificadas), free-open-source-seo-tools (ferramentas abertas de SEO por tarefa), geo-measurement-protocol (protocolo de medição de citação por IA), schema-org-templates-br (modelos de JSON-LD por segmento brasileiro) e a-empresa-que-a-ia-recomenda (materiais de apoio do livro, sem o texto dele).
- APIs de IA. llm-api-python (scripts Python prontos para enviar prompt e receber a resposta de 13 APIs de IA, do ChatGPT ao Ollama).
- WordPress. wordpress-functions, wordpress-security-tips, privacy-policy-disclaimer-without-wordpress-plugin (consentimento de cookies com LGPD, GDPR, CCPA/CPRA e Consent Mode v2, sem plugin) e facilitated-routines-wordpress-plugin (plugin planejado, ainda sem código).
Todo repositório tem README em inglês e em português do Brasil. Relatos de erro e sugestões são bem-vindos pelas Issues de cada repositório.
Para projetos de SEO, GEO ou criação de sites, o caminho é a agência, Lucas Ferraz SEO.