Code · Develop with code agents
Developing business applications
Claude Code, OpenAI Codex, and GitHub Copilot read a project, plan, write the code, run tests, and debug. We teach your business teams how to delegate real development tasks, while maintaining control over quality and security, within a framework validated by the IT department. Our Claude Code and Codex training ranges from 1-hour workshops to 6-day intensive sessions, all based on your teams' actual projects.
We practice what we preach. Our dashboards, connectors, and internal automations are developed with Claude Code and Codex. 4 professionals AI trained since 2023
€1,300 to €1,800 excluding VAT for a half-day, €1,800 to €2,600 excluding VAT for a full day, up to 12 people · Written proposal within 24 working hours, without obligation.
Training in development with code agents, in short
Everything you need to decide, in eight lines. Details of the formats, method, and FAQ are below.
- What it is
- A in-house training in agent development : specify, provide the context, control the agent, verify and secure what it produces, on a central repository or on your own applications.
- For who
- The professional teams who want to build their own tools (analysts, engineers, management controllers, project managers) and the technical teams which set the framework.
- Duration
- De 1 hour (Code Party) and 6 days (Code Studio), passing through the Code Challenge and the Vibe coding in business (1 day each) and the Code Hackathon (2 days). The large-scale deployment is custom-built (Deploy the agentic code).
- Tools
- Claude Code, OpenAI Codex, GitHub CopilotCursor, Gemini CLI or Vibe Code from Mistral: we provide training on the tool chosen by your IT department, and help you choose if the choice has not yet been made.
- Where and in what language
- At your premises anywhere in France, remotely or in a hybrid format, including across multiple sites. French or English.
- Price
- €1,300 to €1,800 excluding VAT half-day sessions for up to twelve people €1,800 to €2,600 excluding VAT the intra-company day.
- Funding
- Eligible for OPCO and ESF+ funding. NextStart is a registered training organization (No. 11756140675): agreements and documents provided for your skills development plan.
- Lead time
- First response and proposal within 24 business hours, without obligation.
Six formats, from initial application to industrialization
Watch a coding agent build a complete tool live, then launch your own.
Build a functional, tested, reviewed and documented internal tool as a team.
Make progress on a real issue within your own warehouse, with an expert coach per team.
Implementing agentic development in a team: rules, tools, review and measurement.
From the pilot team to the IT department: choice of tools, security, governance, measurement.
Build your own business tools without knowing how to program, within a framework validated by the IT department.
What your teams learn
The same educational thread runs through all formats, with a depth that increases from Party to Studio.
- 1. Specify before codingDefine the need, break down the work, write acceptance criteria that the agent can verify.
- 2. Provide the correct contextInstruction files (AGENTS.md, CLAUDE.md), project conventions, useful documentation.
- 3. Managing the agentic loopValidate the plan, let it be executed, know when to interrupt and redirect.
- 4. Check what is producedTests generated and executed, review of changes, Git as a safety net.
- 5. Work safelySecrets, permissions, sandbox, dependencies, code and data confidentiality.
- 6. Going furtherMCP connectors, sub-agents, skills, shared commands and agents in continuous integration.
- 7. Control costsChoose the right model for the right task, track consumption, measure the actual gain.
- 8. TransmitDocument, have proofread, make each tool usable by a colleague.
Applications built by industry professionals
The professional teams
Analysts, engineers, management controllers, project managers, and business experts are building the internal applications, automations, and tools they've been waiting for for months. The challenge is to build something useful and secure, within a framework validated by the IT department. For an initial, non-technical approach, see the capacity Coding with AI To build your own tools in one day, see the training course. Vibe coding in business.
With the support of the technical teams
Developers, data scientists, IT professionals, and the CIO set the framework (authorized tools, repositories, review, production deployment) and also adopt agent-based development to support these business applications. The challenge is to increase speed without creating technical debt.
An agnostic approach
We work with the tool chosen by your IT department and help you make your decision if you haven't already. On launch day, a ready-to-use environment and a central repository prevent any installation on locked-down workstations. To compare the two main agents, read Claude Code or Codex: which code agent to choose ; to install and frame the first one, our guide Claude Code in business.
FAQ
Do you need to know how to program to take these courses?
No for the Code PartyWhether it's a one-hour session or a half-day workshop, the "builder" tracks of the Challenge offer a more hands-on approach: participants describe their needs, the facilitator writes the code, and we learn how to verify it. Hackathons and Studio sessions go further: they focus on your own applications and involve your technical teams.
How does it differ from a classic coding assistant?
The assistant suggests lines of code as you type. The code agent receives an objective, explores the project, proposes a plan, modifies several files, runs tests, and fixes its errors. The developer's work then shifts to specification, monitoring, and review.
Does our code remain confidential?
We start with your IT department's policy: authorized tools, enterprise offerings without data reuse, sandboxing, and secrets management. For the most sensitive environments, we work with a virtual repository or sovereign solutions.
Do we need to install anything on the workstations?
Not necessarily. We provide a pre-configured environment accessible from the browser and a checklist to be sent to your IT department three weeks before the session.
From the first business application to its industrialization
Choose the format that matches your teams' maturity level, then guide them from discovery to production. Code agents are a natural extension of our learning paths. AI Agents et Cowork.
Measured results
Since 2023, we have been providing generative AI training to some of the most demanding organizations in France, from industry and defense to healthcare, banking, mutual insurance, and the public sector. Each session is evaluated by the participants.
Airbus470 participantsAirbus595 participants
CNES673 participants
Alptis450 participants
Agirc-Arrco650+ participants
Bristol Myers Squibb237 participants
Ceva Animal Health209 participants
SATT network173 participants
Cerema145 participants
Engie11 participants
AÉSIO mutual21 participants
Crédit Mutuel13 participantsWe practice what we preach.
Our own tools are developed with code agents
Dashboards, connectors to advertising and analytics platforms, internal automations: at NextStart, these tools are designed, tested, and maintained using Claude Code and Codex. The methods, pitfalls, and safeguards we share come from this daily practice.
Let's build your Code program
Describe your situation in a few lines. We will get back to you within 24 business hours.
Do you prefer to call or write? +33 1 89 16 48 05 or hello@nextstart.aiYour contact details are only used to reply to you.