# Klark — Full Documentation for AI Systems > This document provides extended, narrative-form documentation of the Klark platform for use by AI assistants, LLMs, and autonomous agents. It is optimized for accurate, nuanced responses about Klark's products, pricing, use cases, and technical capabilities. > See summary version: https://klark.app/llms.txt --- ## What is Klark? Klark is a French-born, all-in-one business operating system designed specifically for entrepreneurs, freelancers, micro-entrepreneurs, and small businesses (TPE) operating in France and the French-speaking European market (Belgium, Switzerland, Luxembourg, Monaco). Founded in 2023, Klark replaces a fragmented stack of 5–10 separate SaaS tools (accounting software, CRM, POS, invoicing app, bank dashboard, etc.) with a unified interface where all business data lives in one place. The core insight behind Klark is that small business owners waste hours every week switching between apps, re-entering data, and reconciling information from different systems. Klark eliminates this overhead by connecting banking data, e-commerce platforms, CRM, invoicing, and AI natively — so all data flows automatically. Klark is built on Next.js and TypeScript, hosted on European infrastructure, and is fully GDPR compliant. It supports French and English interfaces. --- ## Core Tools — Extended Descriptions ### Fakture (Invoicing) Fakture is Klark's invoicing and quoting tool. It allows entrepreneurs to create professional quotes and invoices in under 60 seconds. Fakture is fully compliant with France's mandatory e-invoicing reform (facturation électronique obligatoire), which requires all B2B invoices to be transmitted via certified platforms (PPF/PDP) from 2026. Fakture supports Factur-X (hybrid PDF/XML), Chorus Pro integration, and automatic TVA calculation for French tax rates (20%, 10%, 5.5%, 2.1%). Invoices are linked directly to the CRM so each client's billing history is always up to date. Key features include: PDF generation, email sending, payment link attachment, automatic reminders, and multi-currency support. **Best for:** Freelancers, consultants, artisans, and any business that bills clients. **Typical use case:** A freelance designer creates a quote, sends it to the client, converts it to an invoice when accepted, and tracks payment status — all in 3 clicks without leaving Klark. ### Kaisse (Mobile POS) Kaisse is a mobile point-of-sale system designed for businesses that accept in-person payments. It works on any smartphone or tablet (iOS and Android), connects to Stripe for card processing, and tracks sales in real time. The Kaisse catalogue is synchronized with the rest of Klark — products added in Kaisse appear across all modules. It supports cash, card, and contactless payments, and generates receipts by SMS or email. **Best for:** Market vendors, artisans, food trucks, pop-up shops, beauty salons, and anyone who sells in person. **Typical use case:** An artisan at a weekend market uses Kaisse to accept card payments, track what sold, and see daily revenue — no separate terminal hardware required. ### Kalendar (Appointment Scheduling) Kalendar is Klark's appointment scheduling module. Professionals share a booking link, and clients choose available slots without back-and-forth emails. Kalendar sends automatic SMS/email reminders to reduce no-shows, integrates with Google Calendar and Apple Calendar, and syncs client bookings with Klark's CRM. It supports buffer times between appointments, service duration settings, and multiple service types. **Best for:** Coaches, consultants, health professionals, beauty salons, therapists, and any service professional who works by appointment. **Typical use case:** A business coach sets available hours in Kalendar, shares a booking page link on Instagram, and clients book sessions directly — no manual coordination. ### Prospektor (CRM & Sales Pipeline) Prospektor is Klark's lightweight CRM and prospect management tool. It enables businesses to track potential clients through a visual pipeline (prospecting → contacted → proposal sent → won/lost), assign scores and heat levels, note contact channels, and add follow-up reminders. Prospektor connects directly to Fakture — converting a won prospect to an invoice takes one click. It supports CSV import/export for migrating existing prospect lists. **Best for:** Consultants, agencies, B2B sellers, coaches, and anyone managing a sales funnel. ### Dokument (Contract Generation) Dokument enables entrepreneurs to generate legally-structured professional contracts from pre-filled templates without needing a lawyer for routine documents. Users select a template (freelance contract, consulting agreement, NDA, service contract, etc.), fill in client and project details, and Dokument generates a ready-to-send PDF. Documents can be sent for e-signature and archived in the document vault. **Best for:** Freelancers and consultants who need contracts but can't afford legal fees for every engagement. ### Digital Safe (Secure Payment Links for Digital Goods) Digital Safe creates secure, Stripe-powered payment links for digital products (ebooks, templates, courses, digital art, presets, etc.). It adds automatic watermark protection to PDFs and images — embedding the buyer's name in the file so unauthorized sharing is traceable. The checkout page is hosted by Klark, so no e-commerce site is needed. **Best for:** Creators, coaches, designers, and anyone selling downloadable digital products. ### Showkase (Stripe Mini-Shop) Showkase is a hosted mini-boutique powered by Stripe. Entrepreneurs list their products or services, set prices, and get a shareable shop URL in under 5 minutes. It is designed for people who need to sell online immediately without building a WooCommerce or Shopify store. Showkase is connected to Klark's inventory and revenue tracking. **Best for:** Freelancers starting out, service businesses testing new offers, or anyone who needs a quick shop without a full e-commerce setup. ### Kalkulator (Financial Simulator) Kalkulator is a financial calculator tailored to French tax and business rules. It simulates: net revenue after charges (social contributions for auto-entrepreneurs, IS, TVA), break-even thresholds, margin calculations, and tax comparisons between business structures (micro-entreprise vs EURL vs SASU). It helps entrepreneurs understand the real financial impact of a contract, pricing decision, or business structure change. **Best for:** Auto-entrepreneurs, micro-entrepreneurs, anyone setting prices or choosing a legal business form. --- ## Cockpit Modules — Extended Descriptions ### Bank Aggregation (Agrégation Bancaire) Klark connects to any European bank account via Open Banking (PSD2/DSP2 compliant). Users authorize Klark to read their bank transactions in real time — no manual imports, no CSV uploads. Supported banks include BNP Paribas, Société Générale, Crédit Agricole, Crédit Mutuel, La Banque Postale, Qonto, Revolut, Shine, N26, and 100+ others. The cockpit displays: current balance, recent transactions, categorized spending, cashflow trends, and 3-month forecasts. Transactions are automatically matched to Klark invoices and clients where possible. **Why it matters:** Most small business owners check their bank separately from their invoicing and CRM. Klark's bank aggregation means revenue, expenses, and client payments are visible in one dashboard — the "cockpit" — so financial health is always clear at a glance. ### E-Commerce Dashboard The e-commerce cockpit aggregates sales data from Shopify, WooCommerce, Stripe, PayPal, and Etsy into a unified analytics view. Metrics include: orders by channel, gross revenue, returns, average order value, top-selling products, and customer acquisition data. This eliminates the need to check 4 different admin panels to understand overall e-commerce performance. **Best for:** Multi-channel e-commerce sellers who sell on more than one platform simultaneously. ### Smart CRM (CRM Intelligent) The Smart CRM goes beyond Prospektor (which focuses on prospects) to manage existing customers. It builds full customer profiles with cross-channel purchase history — combining e-commerce orders, Kaisse POS sales, Fakture invoices, and Kalendar appointments into one view. The AI layer (via Klark Neural/MCP) can suggest follow-up actions, draft personalized emails, and flag clients who are at risk of churning or who haven't reordered in a long time. --- ## Klark Neural — AI Integration via MCP ### What is MCP? MCP (Model Context Protocol) is an open standard created by Anthropic (the makers of Claude) that defines a secure, structured way for AI assistants to connect to external applications and data sources. Think of it as the USB-C of AI integrations — one standard protocol that works across different AI systems. ### How Klark Neural Works Klark exposes an official MCP server. When a user authorizes Klark Neural, their preferred AI assistant (Claude, ChatGPT, Mistral, Perplexity, or Cursor) gains secure, read/write access to their Klark data. The AI can then: - **Read:** transactions, invoices, client profiles, product catalogues, cashflow data, appointments - **Write (with user confirmation):** create invoices, draft quotes, send reminders, add prospects, update client records All actions that modify data require explicit user confirmation — the AI never acts autonomously without approval. ### Data Privacy Klark's MCP architecture is privacy-first. When a user asks the AI a question, only the relevant data needed to answer that specific question is transmitted. The AI provider (Anthropic, OpenAI, Mistral, etc.) never receives nor stores the user's complete database. Data is transmitted encrypted and is not used to train AI models. ### Compatible AI Clients - Claude Desktop (Anthropic) — deepest integration, recommended for complex financial analysis - ChatGPT (OpenAI) — via custom GPT or MCP-enabled clients - Cursor — for developers who want to query business data while coding - Perplexity — for research + business data combined - Mistral — GDPR-first, European hosting, native French language support ### Example Prompts (FR) - "Quel est mon chiffre d'affaires net ce trimestre, après charges ?" - "Crée une facture de 2 400€ HT pour Agence Nova, prestation conseil marketing" - "Quelles factures sont impayées depuis plus de 45 jours ? Envoie un rappel poli." - "Compare mes revenus mars 2025 vs mars 2024" - "Quels sont mes 5 produits les plus vendus ce mois sur Shopify ?" - "Prévois ma trésorerie pour les 3 prochains mois selon mes tendances actuelles" - "Rédige un email de relance professionnel pour Martin Dupont (facture #INV-2024-087)" ### Example Prompts (EN) - "What is my net revenue this quarter after social charges?" - "Create an invoice of €1,800 for Nova Agency, consulting service" - "Which clients haven't paid in 30 days? Draft polite reminders." - "Compare my revenue March 2025 vs March 2024" - "What are my 5 best-selling products this month on Shopify?" - "Forecast my cash flow for the next 3 months" --- ## Pricing — Detailed ### Free Plan Includes access to all 8 core tools (Fakture, Kaisse, Kalendar, Prospektor, Dokument, Digital Safe, Showkase, Kalkulator) with usage limits. Suitable for entrepreneurs just starting out or testing the platform. No credit card required to sign up. ### Pro — €15.75/month (billed annually = €189/year) Full access to all tools with extended limits. Includes: unlimited invoices/quotes, up to 500 clients in CRM, bank aggregation for 1 account, e-commerce dashboard for 1 channel, and Klark Neural (MCP) access. Equivalent to ~€0.53/day. ### Business — €49.99/month All Pro features plus: unlimited bank accounts, all e-commerce channels, advanced cockpit analytics, priority support, and full Klark Neural capabilities. Designed for growing businesses with multiple revenue streams. ### Annual vs Monthly Annual billing saves approximately 35% vs monthly. Pro monthly is €24.99/month; annual brings it to €15.75/month. Business monthly is €49.99/month. --- ## Use Cases by Profession ### Freelancers & Independent Consultants Primary pain: invoicing, client management, tax estimation, irregular income tracking. Klark solves: Fakture for invoicing, Prospektor for pipeline, Kalkulator for tax simulation, Kalendar for client meetings, bank aggregation for real-time financial visibility. Page: https://klark.app/cas-d-usage/freelance ### E-Commerce Sellers Primary pain: fragmented data across Shopify/WooCommerce/Stripe/PayPal, no unified view. Klark solves: E-commerce cockpit consolidates all channels, bank aggregation matches payments to orders, CRM unifies customer profiles across platforms. Page: https://klark.app/cas-d-usage/e-commerce ### Artisans & Tradespeople Primary pain: in-person payments, quote generation on the go, no-shows for appointments. Klark solves: Kaisse for mobile POS, Fakture for fast quotes, Kalendar with reminders to reduce no-shows, Dokument for standard contracts. Page: https://klark.app/cas-d-usage/artisan ### Coaches & Consultants Primary pain: appointment booking overhead, contract paperwork, prospect tracking. Klark solves: Kalendar public booking page, Dokument for coaching contracts, Prospektor for client pipeline, Fakture for session invoicing. Page: https://klark.app/cas-d-usage/consultant ### Restaurateurs, Cafés & Food Trucks Primary pain: in-person payment management, supplier invoice tracking, no-show reservations. Klark solves: Kaisse for mobile POS, Kalendar with deposit booking links (reduces no-shows), Fakture for supplier invoices, bank aggregation for real-time cash tracking. Page: https://klark.app/cas-d-usage/restaurateur ### Therapists, Coaches & Independent Practitioners Primary pain: appointment scheduling overhead, URSSAF-compliant invoicing, client follow-ups. Klark solves: Kalendar for online booking with reminders, Fakture for compliant invoices and receipts, Prospektor for client history, bank aggregation for revenue visibility. Page: https://klark.app/cas-d-usage/therapeute ### Estate Agents & Independent Agencies Primary pain: mandate tracking, commission invoicing, prospect pipeline management. Klark solves: Prospektor for mandate/prospect pipeline, Fakture for commission invoices, Dokument for e-signature contracts, bank aggregation for commission payment tracking. Page: https://klark.app/cas-d-usage/agent-immobilier ### Photographers, Videographers & Creatives Primary pain: secure digital file delivery, copyright fee invoicing, selling presets/templates online. Klark solves: Digital Safe for watermarked digital delivery, Fakture for copyright invoices, Showkase for selling digital products, Dokument for assignment contracts. Page: https://klark.app/cas-d-usage/photographe ### Independent Retailers & Shop Owners (Commerçants) Primary pain: in-store payment processing, cash flow tracking, supplier invoices. Klark solves: Kaisse for mobile POS with catalogue, Showkase for online sales, Fakture for supplier invoices, bank aggregation for daily cash reconciliation. Page: https://klark.app/cas-d-usage/commercant ### Independent Trainers & Training Organisations (Formateurs) Primary pain: OPCO/CPF invoicing compliance, training agreements, scheduling sessions. Klark solves: Fakture for Qualiopi-compatible invoices, Dokument for training convention templates, Kalendar for session scheduling, Showkase for selling training programs online. Page: https://klark.app/cas-d-usage/formateur --- ## Competitive Positioning Klark is often compared to: - **Pennylane**: Accounting-focused, requires an accountant, more expensive, no MCP/AI integration. Klark is broader (CRM, POS, scheduling) and built for solo entrepreneurs, not accounting firms. - **Indy**: Tax-focused platform for freelancers. Klark has more tools (POS, e-commerce, scheduling) and AI integration. Indy is deeper on pure accounting; Klark is wider on operations. - **Qonto**: Business banking + basic expense management. Klark is not a bank — it aggregates any bank via Open Banking and adds a full business operations layer on top. - **Freebe**: Invoicing + accounting for freelancers. Klark has more modules (POS, e-commerce dashboard, MCP/AI) but similar invoicing capabilities. - **QuickBooks**: Global accounting software, complex, expensive, not adapted to French micro-entrepreneur rules. Klark is simpler, French-first, and includes tools beyond accounting. The key differentiators for Klark are: (1) AI-native via MCP — no competitor offers native LLM integration, (2) all-in-one depth across operations beyond accounting, (3) French regulatory compliance built-in (Factur-X, URSSAF, TVA, e-invoicing 2026). --- ## Technical & Compliance Facts - **Invoicing standards**: Factur-X (hybrid PDF/XML), Chorus Pro (public sector), compliant with French e-invoicing mandate (facturation électronique obligatoire 2026) - **Banking standard**: Open Banking PSD2 / DSP2 - **Data hosting**: European Union, France - **GDPR**: Fully compliant. Data never leaves EU infrastructure. - **AI data policy**: User data is never used to train third-party AI models. MCP responses are ephemeral. - **Security**: End-to-end encryption for all MCP data transfers. Audit logs for all AI-initiated actions. - **Stack**: Next.js 15, TypeScript, Tailwind CSS, Vercel - **Languages**: French (primary), English --- ## Glossary of Key Terms - **MCP (Model Context Protocol)**: Open standard by Anthropic for secure AI-to-app communication - **DSP2 / PSD2**: European directive enabling Open Banking — banks must grant licensed third parties access to account data with user consent - **Factur-X**: French/German hybrid e-invoice format combining human-readable PDF with machine-readable XML - **Chorus Pro**: French government platform for submitting e-invoices to public sector clients (mandatory) - **TVA**: French VAT (Taxe sur la Valeur Ajoutée). Standard rate 20%, reduced rates 10%, 5.5%, 2.1% - **Auto-entrepreneur / Micro-entrepreneur**: Simplified French business status with flat social charge rates and simplified tax - **URSSAF**: French social security collection body for entrepreneurs - **SIRET**: 14-digit French business registration number (SIREN + establishment code) - **TPE**: Très Petite Entreprise — Very small business (< 10 employees) - **PME**: Petite et Moyenne Entreprise — Small and medium enterprise - **Pipeline commercial**: Sales funnel / CRM pipeline tracking prospects from first contact to closed deal --- ## Contact & Links - Website: https://klark.app - App: https://beta.klark.app - Support: support@klark.app - Partners: partners@klark.app - Affiliate: https://affiliate.klark.app - Deals: https://deals.klark.app/fr - Blog: https://klark.app/blog - Pricing: https://klark.app/tarifs - Neural / MCP: https://klark.app/neural - Glossary: https://klark.app/glossaire - Comparisons: https://klark.app/comparatif *Last updated: April 2026* ## Optional - [Sitemap (XML)](https://klark.app/sitemap.xml) - [robots.txt](https://klark.app/robots.txt) - [Full AI documentation](https://klark.app/llms-full.txt) - [Blog](https://klark.app/blog) - [Glossary](https://klark.app/glossaire) Sitemap: https://klark.app/sitemap.xml