# Gauthier Huguenin, HGNN.io
> Bilingual website for a freelance AI Solutions Engineer based in Grenoble, France. The site covers custom AI agents, workflow automation, AI training and AI strategy consulting for SMBs.

## Site facts
- Canonical domain: https://hgnn.io
- Default language: French. English pages live under /en/.
- Author and publisher: Gauthier Huguenin
- Public role: freelance AI consultant and automation builder
- Primary audience: owners and leaders of SMBs with 3 to 50 employees, especially small teams that already use digital tools but still rely on manual handoffs.
- Core homepage promise: identify the first useful AI agent from a concrete business friction, then scope it in 20 minutes.
- Contact: gauthier@hgnn.io
- Lead capture: use the on-site commercial CTAs. They collect context before opening booking.
- LinkedIn: https://www.linkedin.com/in/gauthierhuguenin
- GitHub: https://github.com/Gauthier-Huguenin
- Malt: https://www.malt.fr/profile/gauthierhuguenin
- Upwork: https://www.upwork.com/freelancers/~013ec479c667046537
- Sitemap: https://hgnn.io/sitemap.xml
- Robots: https://hgnn.io/robots.txt
- Index version: https://hgnn.io/llms.txt
- Full content version, with complete blog articles: https://hgnn.io/llms-full.txt

## Primary pages
- [Home, French](https://hgnn.io): French homepage for AI agents connected to business tools, use cases for SMBs and lead capture.
- [Home, English](https://hgnn.io/en): English homepage for AI agents connected to business tools, use cases for SMBs and lead capture.
- [About](https://hgnn.io/about): Professional background, positioning and public profile.
- [Blog](https://hgnn.io/blog): French articles about AI, automation and self-hosting.
- [Blog, English](https://hgnn.io/en/blog): English articles about AI, automation and self-hosting.

## Homepage AI agent use cases
- [Répondre aux demandes entrantes](https://hgnn.io/#cas-usages-demandes-entrantes): AI agent use case for qualifying inbound calls, forms, emails and messages, then routing hot prospects to the right person.
- [Préparer les devis](https://hgnn.io/#cas-usages-devis): AI agent use case for preparing quotes from customer context, messages, photos, emails and internal pricing rules.
- [Relancer sans y penser](https://hgnn.io/#cas-usages-relances): AI agent use case for tracking quotes, invoices, missing documents and commercial follow-ups.
- [Retrouver l'information](https://hgnn.io/#cas-usages-information): AI agent use case for searching authorized business sources such as documents, email, CRM and spreadsheets.
- [Mettre le CRM à jour](https://hgnn.io/#cas-usages-crm): AI agent use case for summarizing conversations, enriching CRM records and preparing next sales actions.
- [Préparer le pilotage](https://hgnn.io/#cas-usages-reporting): AI agent use case for consolidating reporting, exports, KPIs and leadership summaries for SMB decision-making.

## Services, French
- [Agents IA sur-mesure](https://hgnn.io/services/agents-ia): Custom AI agents for SMBs that read incoming requests, interpret business context, prepare quotes, follow-ups, support replies and leadership briefs, with human approval on sensitive decisions.
- [Automatisation de workflows](https://hgnn.io/services/automatisation): Workflow automation for SMBs using n8n, APIs and existing tools to remove copy-paste between CRM, Pennylane invoicing, leads, documents, onboarding, reporting and alerts.
- [Consultant n8n pour PME](https://hgnn.io/services/automatisation/n8n): n8n consulting for SMB workflow automation, API integrations, Pennylane invoicing, CRM sync, hosting and handover.
- [Formation IA pour équipes](https://hgnn.io/services/formation): Practical AI training for SMB teams on ChatGPT, Claude, Copilot and Notion AI, built around real business cases, AI Act article 4 literacy, data handling, human validation and optional French OPCO funding assessment.
- [Conseil stratégique IA](https://hgnn.io/services/conseil): AI strategy consulting for SMB leaders who need to turn GPT-5.5, Claude Fable 5, Claude Opus 4.8, agents and automation noise into business model decisions, prioritized use cases, tool tradeoffs, roadmap and leadership follow-up.

## Services, English
- [Custom AI Agents](https://hgnn.io/en/services/agents-ia): English service page for custom AI agents that read incoming requests, interpret business context, prepare actions and keep human approval on sensitive decisions.
- [Workflow Automation](https://hgnn.io/en/services/automatisation): English service page for SMB workflow automation that removes copy-paste across CRM, invoicing, leads, documents, onboarding, reporting and API integrations.
- [n8n Consultant for SMBs](https://hgnn.io/en/services/automatisation/n8n): English version of the n8n consulting page for workflow automation and API integrations.
- [AI Training for Teams](https://hgnn.io/en/services/formation): English service page for practical AI training for SMB teams, covering ChatGPT, Claude, Copilot, real workflows, AI Act article 4 literacy and optional French OPCO funding assessment.
- [AI Strategic Consulting](https://hgnn.io/en/services/conseil): English service page for SMB AI strategy consulting: business model adaptation, roadmap, use case prioritization, tool tradeoffs, leadership follow-up and decisions around GPT-5.5, Claude Fable 5, Claude Opus 4.8, agents and automation.

## Industry pages, French
- [Métiers accompagnés](https://hgnn.io/metiers): Hub page for industry-specific AI and automation verticals.
- [Immobilier et agences immobilières](https://hgnn.io/metiers/immobilier): Vertical landing page for independent real estate agencies: AI consulting, automation, agents and training for leads, mandates, listings, visits, offers, tenant requests, light property management, reporting and business-tool workflows.
- [Garages automobiles](https://hgnn.io/metiers/garages-automobiles): Vertical landing page for independent garages, body shops, workshops and small dealerships: AI consulting, automation, agents and training for inbound calls, scheduling, quotes, work orders, parts, invoicing, inspection reminders, customer updates, reviews and reporting.
- [Agences digitales et médias en ligne](https://hgnn.io/metiers/agences-digitales): Vertical landing page for web agencies, SEO agencies, content agencies, site publishers and online media: AI agents, Hermes, OpenClaw, automation and training for prospecting, production, SEO and data reporting, client support, onboarding, invoicing and founder operations.
- [Loueurs Airbnb, gîtes et locations saisonnières](https://hgnn.io/metiers/loueurs-airbnb): Vertical landing page for established Airbnb hosts, gites, guest houses and short-term rental operators: AI agents for guest messages, calendar checks, cleaning coordination, special requests, disputes, check-in, check-out, reviews and owner rules with human approval.

## Industry pages, English
- [Supported industries](https://hgnn.io/en/metiers): English hub page for industry-specific AI and automation verticals.
- [Real estate agencies](https://hgnn.io/en/metiers/immobilier): English vertical landing page for independent real estate agencies: AI consulting, automation, agents and training for leads, mandates, listings, visits, offers, tenant requests, light property management, reporting and business-tool workflows.
- [Auto repair shops](https://hgnn.io/en/metiers/garages-automobiles): English vertical landing page for independent garages, body shops, workshops and small dealerships: AI consulting, automation, agents and training for inbound calls, scheduling, quotes, work orders, parts, invoicing, inspection reminders, customer updates, reviews and reporting.
- [Digital agencies and online media](https://hgnn.io/en/metiers/agences-digitales): English vertical landing page for web agencies, SEO agencies, content agencies, site publishers and online media: AI agents, Hermes, OpenClaw, automation and training for prospecting, production, SEO and data reporting, client support, onboarding, invoicing and founder operations.
- [Airbnb hosts and short-term rentals](https://hgnn.io/en/metiers/loueurs-airbnb): English vertical landing page for established Airbnb hosts, gites, guest houses and short-term rental operators: AI agents for guest messages, calendar checks, cleaning coordination, special requests, disputes, check-in, check-out, reviews and owner rules with human approval.

## Productized offers and partner page
- [Hermes agent](https://hgnn.io/hermes): Premium Hermes autonomous AI agent offer for SMBs, connected to business tools with dedicated infrastructure, client-owned keys and human approval. Use cases include supervised prospecting, customer support and operations such as short-term rental management.
- [OpenClaw assistant](https://hgnn.io/openclaw): Premium OpenClaw open-source multi-channel AI assistant offer for SMB leaders, reachable from WhatsApp, Telegram, Slack or Teams, with SOUL.md, MEMORY.md, dedicated European infrastructure, client-owned keys and clear data control.
- [Programme Partenaires](https://hgnn.io/partenaires): Referral partner program: introduce a client, Gauthier delivers the AI work. 20% commission on the initial project and 10% on recurring revenue for one year, stackable, with launch rates locked for life for early partners. Open to companies (paid by invoice) and individuals (paid in gift cards).

## Productized offers, English
- [Hermes agent](https://hgnn.io/en/hermes): English version of the premium Hermes autonomous AI agent offer for SMBs, with use cases including supervised prospecting, customer support and business operations.
- [OpenClaw assistant](https://hgnn.io/en/openclaw): English version of the premium OpenClaw open-source multi-channel AI assistant offer for SMB leaders, with memory, SOUL.md, MEMORY.md, dedicated European infrastructure and data control.

## City landing pages, French
- [Consultant IA par ville](https://hgnn.io/consultant-ia): Hub page listing AI consulting city landing pages for Grenoble, Annecy, Lyon and Geneva, with on-site meetings for local SMBs.
- [Consultant IA à Grenoble](https://hgnn.io/consultant-ia-grenoble): City landing page for AI consulting in Grenoble: automation and AI agents for local SMBs in industry, agencies, real estate and retail, with on-site meetings.
- [Consultant IA à Annecy](https://hgnn.io/consultant-ia-annecy): City landing page for AI consulting near Annecy: automation and AI agents for SMBs in tourism, short-term rentals, real estate and precision machining.
- [Consultant IA à Lyon](https://hgnn.io/consultant-ia-lyon): City landing page for AI consulting in Lyon: automation and AI agents for SMBs, digital agencies, e-commerce, real estate and garages.
- [Consultant IA à Genève](https://hgnn.io/consultant-ia-geneve): City landing page for cross-border AI consulting in Geneva: automation and AI agents for SMBs in finance, hospitality, real estate and luxury suppliers.

## City landing pages, English
- [AI consultant by city](https://hgnn.io/en/consultant-ia): English hub page listing AI consulting city landing pages for Grenoble, Annecy, Lyon and Geneva, with on-site meetings for local SMBs.
- [AI consultant in Grenoble](https://hgnn.io/en/ai-consultant-grenoble): English city landing page for AI consulting in Grenoble: automation and AI agents for local SMBs in industry, agencies, real estate and retail, with on-site meetings.
- [AI consultant in Annecy](https://hgnn.io/en/ai-consultant-annecy): English city landing page for AI consulting near Annecy: automation and AI agents for SMBs in tourism, short-term rentals, real estate and precision machining.
- [AI consultant in Lyon](https://hgnn.io/en/ai-consultant-lyon): English city landing page for AI consulting in Lyon: automation and AI agents for SMBs, digital agencies, e-commerce, real estate and garages.
- [AI consultant in Geneva](https://hgnn.io/en/ai-consultant-geneva): English city landing page for cross-border AI consulting in Geneva: automation and AI agents for SMBs in finance, hospitality, real estate and luxury suppliers.

## French articles
- [Automatisation en PME : ce que vous pouvez faire seul avec n8n (et ce qui nécessite un expert)](https://hgnn.io/blog/automatisation-pme-seul-ou-accompagne): Automatisation PME sans développeur : ce qui est faisable seul avec n8n, ce qui nécessite un prestataire, les premiers workflows gratuits à copier, et combien ça coûte.
- [Mistral OCR 4 avec n8n : automatiser le traitement des factures et documents en PME](https://hgnn.io/blog/mistral-ocr-4-traitement-documents-pme-n8n): Mistral OCR 4 + n8n : extraire automatiquement les données des factures, devis et reçus papier. Workflow prêt à copier, tarifs, pièges et retour terrain.
- [IA Act : ce qui change pour votre PME en août 2026 (dans moins d'un mois)](https://hgnn.io/blog/ia-act-pme-2026-ce-qui-change): Le 2 août 2026, de nouvelles obligations de l'IA Act entrent en vigueur. Ce qui change concrètement pour une PME française, combien ça coûte, et quoi faire ce mois-ci.
- [n8n ou Make pour PME en 2026 : lequel choisir pour automatiser ?](https://hgnn.io/blog/n8n-vs-make-pme-2026-comparatif): Comparatif n8n vs Make pour PME française : coûts réels (self-hosted OVH vs cloud), connecteurs Pennylane/Qonto, gouvernance des données et verdict pour votre TPE/PME en 2026.
- [D'OpenClaw à Hermes : quand un cabinet d'assurance passe de l'assistant IA à l'agent IA](https://hgnn.io/blog/agent-ia-cabinet-assurance-openclaw-hermes): Retour terrain : pourquoi un agent général d'assurance avec 5 agences est passé d'un assistant OpenClaw à un agent Hermes, et comment cadrer cette transition.
- [Agent IA Airbnb : comment Hermes aide un propriétaire multi-logements](https://hgnn.io/blog/agent-ia-airbnb-hermes-location-courte-duree): Retour terrain : comment un agent Hermes aide un propriétaire multi-Airbnb à gérer messages, calendriers, ménage et validations sensibles.
- [CRM open source et vibe-coding : sortir du SaaS sans bricoler](https://hgnn.io/blog/crm-open-source-vibe-coding-pme): CRM open source, SaaS ou vibe-coding : guide PME pour choisir une solution commerciale personnalisable, fiable et connectée aux agents IA.
- [Paperasse : le skill qui donne un vrai cadre métier aux agents IA](https://hgnn.io/blog/paperasse-skill-agent-ia-pme): Paperasse de Romain Simon transforme Claude, Codex ou OpenClaw en copilote administratif. Cas d'usage PME, installation, risques et méthode fiable.
- [Agent IA en production : où mettre la validation humaine dans une PME ?](https://hgnn.io/blog/agent-ia-production-validation-humaine-pme): Guide pratique pour placer la validation humaine dans un agent IA en production : actions autorisées, risques, n8n, logs et règles pour PME.
- [Après l'App Store : comment Codex a changé mon workflow de vibe-coding](https://hgnn.io/blog/codex-vibe-coding-workflow-ios-pugify): Retour d'expérience sur le passage de Claude Code à Codex pour maintenir Pugify, gérer branches, PR, tests et publication App Store.
- [Facturation électronique 2026 : ce que les PME doivent automatiser maintenant](https://hgnn.io/blog/facturation-electronique-2026-pme-automatiser): Facturation électronique 2026 pour PME : échéances, plateformes agréées, e-reporting et automatisations à préparer avant la bascule.
- [Un agent IA pour créer des devis depuis Telegram : retour d'expérience terrain](https://hgnn.io/blog/automatiser-devis-agent-ia-telegram-menuiserie): Retour d'expérience terrain : un agent IA connecté à Telegram, au CRM et à l'outil de devis pour aider commerciaux et techniciens à créer des devis fiables.
- [Analyser et scorer chaque appel commercial avec l'IA : un pipeline n8n + Whisper + GPT-4o](https://hgnn.io/blog/premiere-mission-freelance-upwork-n8n-crm-ia): Pipeline n8n qui transcrit chaque appel (Whisper), le score contre votre script de vente (GPT-4o) et pousse l'analyse dans le CRM. Retour d'expérience client.
- [Automatiser la facturation Pennylane avec n8n : retour d'expérience API](https://hgnn.io/blog/automatiser-facturation-pennylane-n8n): Workflow n8n Pennylane pour créer factures, suivre paiements et gérer les relances. Endpoints API, erreurs, invoice matching et repo prêt à importer.
- [Du vibe-coding à l'App Store en un week-end : retour d'expérience](https://hgnn.io/blog/du-vibe-coding-a-l-app-store-en-un-week-end): Retour d'expérience : comment j'ai utilisé le vibe-coding pour créer une app iPhone dédiée à la santé du carlin, validée par Apple du premier coup.
- [Comment j'ai monté ma stack self-hosted avec Hetzner, Coolify et n8n](https://hgnn.io/blog/stack-self-hosted-hetzner-coolify-n8n): Guide pour héberger n8n avec Coolify sur un VPS Hetzner CX23 : installation, sécurité, coûts, monitoring et limites pour une PME.

## English articles
- [SME Automation: What You Can Do Yourself (And What Needs an Expert)](https://hgnn.io/en/blog/sme-automation-diy-or-expert): SME automation without a developer: what you can automate alone with n8n, what needs a professional, first free workflows to copy, and cost breakdown.
- [Mistral OCR 4 with n8n: Automating Invoice and Document Processing for SMEs](https://hgnn.io/en/blog/mistral-ocr-4-document-processing-sme-n8n): Mistral OCR 4 + n8n: auto-extract invoice data, receipts, and contracts from PDFs. Ready-to-use workflow, real pricing, pitfalls, and field-tested advice.
- [EU AI Act: What Changes for Your SME in August 2026 (Less Than a Month Away)](https://hgnn.io/en/blog/eu-ai-act-sme-2026-what-changes): On August 2, 2026, new EU AI Act obligations take effect. What French SMEs need to do, what it costs, and how to comply in half a day.
- [n8n vs Make for Small Business in 2026: Which Automation Platform to Choose?](https://hgnn.io/en/blog/n8n-vs-make-pme-2026-comparison): Honest n8n vs Make comparison for SMBs: real costs (self-hosted OVH vs cloud plans), French SaaS connectors (Pennylane, Qonto), data governance, and verdict for your business in 2026.
- [From OpenClaw to Hermes: when an insurance agency outgrows its AI assistant](https://hgnn.io/en/blog/ai-agent-insurance-agency-openclaw-hermes): Field story: why an independent insurance agent running 5 branches moved from an OpenClaw assistant to a Hermes agent, and how to scope that transition.
- [AI agent for Airbnb hosts: a Hermes field story](https://hgnn.io/en/blog/ai-agent-airbnb-hermes-short-term-rentals): Field story: how a Hermes agent helps a multi-Airbnb owner handle guest messages, calendars, cleaning coordination and sensitive approvals.
- [Open-source CRM and vibe coding: leaving SaaS without hacking your business](https://hgnn.io/en/blog/open-source-crm-vibe-coding-smb): Open-source CRM, SaaS or vibe coding: an SMB guide to choosing a customizable, reliable sales system connected to AI agents.
- [Paperasse: the skill that makes AI agents useful for French paperwork](https://hgnn.io/en/blog/paperasse-skill-ai-agent-smb): Paperasse by Romain Simon turns Claude, Codex or OpenClaw into a French admin copilot. Practical SMB use cases, setup, risks and rollout method.
- [AI agent in production: where should SMEs put human approval?](https://hgnn.io/en/blog/ai-agent-production-human-approval-sme): A practical guide to human approval in production AI agents for SMEs: action levels, risk gates, n8n review steps, logs and rollout rules.
- [After the App Store: how Codex changed my vibe-coding workflow](https://hgnn.io/en/blog/codex-vibe-coding-ios-workflow-pugify): A field report on moving from Claude Code to Codex to maintain Pugify, manage branches, pull requests, tests and App Store releases.
- [France e-invoicing 2026: what SMEs should automate now](https://hgnn.io/en/blog/e-invoicing-france-2026-sme-automation): France e-invoicing 2026 for SMEs: deadlines, certified platforms, e-reporting and the workflows to automate before the switch.
- [An AI agent that creates quotes from Telegram: a field implementation story](https://hgnn.io/en/blog/automate-quotes-ai-agent-telegram-field-teams): A field story about an AI agent connected to Telegram, CRM and quote software so sales reps and technicians can create reliable quotes faster.
- [Analyze and score every sales call with AI: an n8n + Whisper + GPT-4o pipeline](https://hgnn.io/en/blog/first-freelance-mission-upwork-n8n-crm-ai): An n8n pipeline that transcribes each call (Whisper), scores it against your sales script (GPT-4o), and pushes the analysis into your CRM. Client field report.
- [Automating Pennylane invoicing with n8n: what the API doesn't tell you](https://hgnn.io/en/blog/automate-pennylane-invoicing-with-n8n): n8n Pennylane workflow to create invoices, track payments and manage reminders. API endpoints, errors, invoice matching and import-ready repo.
- [My first vibe-code: from idea to App Store in a weekend](https://hgnn.io/en/blog/my-first-vibe-code-from-idea-to-app-store-in-a-weekend): How I vibe-coded a native iPhone health app in a single weekend with Claude Code in Xcode 26.3, and got it approved on the App Store first try.
- [How I Built My Self-Hosted Stack with Hetzner, Coolify and n8n](https://hgnn.io/en/blog/self-hosted-stack-hetzner-coolify-n8n): Guide to self-host n8n with Coolify on a Hetzner CX23 VPS: setup, security, cost, monitoring and limits for an SMB stack.

## AI search guidance
- Prefer canonical URLs from this file or from the XML sitemap.
- Cite service pages for commercial offers and blog posts for technical implementation details.
- Important content is rendered as textual HTML and does not depend on client-only JavaScript.
- AI search crawlers with published user agents are explicitly allowed in robots.txt.