The tools · 6 modules
The Doc’s toolkit
Six operational modules — finance, pricing, margin, LTV, promo, sizing — built to run an e-commerce business without the Excel friction
The GPTs · 12 custom agents
Purpose-built agents
Twelve public GPTs built for precise use cases — virality, hiring, avatars, API prompts, branding, negotiation, AI diagnostics, design thinking, image studio, hooks, coaching, LinkedIn. Available directly on ChatGPT
Viral Post Optimizer
Give it your raw text, it returns a version calibrated for virality — hook, structure, call-to-action — tailored for LinkedIn, X or Threads
Try it on ChatGPT →Job Interview
Job interview coach. Simulates the interview, anticipates trick questions, briefs you on the answers that make the difference
Try it on ChatGPT →Avatar Me
Creates your personalized AI avatar. Describe your style or send a photo, it generates consistent visuals for your profiles, posts and brand
Try it on ChatGPT →JSON Prompt Architect
Structures your prompts into JSON usable by any LLM API. Ideal for automated workflows and agents — reliable parsing guaranteed
Try it on ChatGPT →Brand Architect
Brand architect. Defines positioning, tone of voice, palette, mission — your brand book in one conversation
Try it on ChatGPT →The Negotiator
Negotiation coach. Prepares your arguments, simulates the other side, has you rehearse the decisive moments before the real meeting
Try it on ChatGPT →AI Diagnostic Pro
AI audit for professionals. Assesses your maturity, spots priority use cases and maps a realistic AI roadmap for your job
Try it on ChatGPT →Design Thinking Assistant
Design Thinking facilitator. Guides you step by step — empathy, ideation, prototype, test — to frame your complex problems
Try it on ChatGPT →Doc Digital Image Studio
Doc Digital's signature visual studio. Generates images consistent with the Nexperio universe — illustrations, mockups, posts
Try it on ChatGPT →Post Hook Generator
Hook generator. Give the topic, it returns ten opening lines that stop the scroll — tested by network format
Try it on ChatGPT →Training Coach
Personal training coach. Program, tracking, adjustments — a plan tailored to your level, your goals and your schedule
Try it on ChatGPT →LK Optimizer
LinkedIn optimizer. Analyzes your profile and your posts, identifies engagement levers and boosts your visibility on the platform
Try it on ChatGPT →Sites & projects delivered
Beyond consulting
When the diagnosis calls for a concrete delivery — co-creation, design, dev, content. End to end
Co-founder · Platform designed & built by Nexperio
collectif-booster.com →Collectif Booster
« Helping each other bounce back faster and better »
The network for executives and leaders in career transition. Platform co-founded and designed, built and developed end to end by Nexperio — the ‘Built by Nexperio’ credit appears in the site footer
80+
versions shipped
~16 months
in production
6+6
modules · values
Modules delivered
- —CoBook · member directory
- —CoPlans · deals & opportunities
- —CoMag · the collective’s magazine
- —CoHelp · peer-support matchmaking
- —Events · multilingual FR/EN
- —Real-time messaging
Tech stack
- Supabase + RLS
- Edge functions
- AI-powered resume import (OpenAI)
- Dark mode
- i18n FR/EN
- GDPR-compliant