Duration
One day, 09:30 to 17:00
Group
4 to 8 people
Price
€690 net, regular €890
Venue
Grell37 in Berlin Prenzlauer Berg or at your place
Who it is for
Developers, tech leads and freelancers who already use a coding agent and now want to let it touch code that somebody is liable for.
What you bring
- Your own laptop with Claude Code or a comparable agent up and running
- A real repo you are allowed to work on. No sample project
- Basic Git routine
What you take away
- A CLAUDE.md for your own repo, written and tested
- A slash command and a subagent of your own that still work on Monday
- A rule set for the team: which actions the agent never takes on its own
- A checklist for the moment the agent claims to be done
Not on the programme
- Prompt engineering for its own sake
- Model comparisons and benchmarks
- Building your own agent frameworks
Agenda
The times are a plan. If a topic is burning in the group, the rest shifts.
Arrival and setup check
Everyone's agent is running, everyone has their repo with them. Whoever is still installing in the morning loses half of it.
How an agent actually works
Context window, tools, permission modes, what gets lost when the context is compacted. Live on a real repo, no slides. By the end you know why the agent starts making things up after two hours.
11:00
Break
Preparing the repo
What belongs in CLAUDE.md, what in a knowledge base, what in the agent's memory and what nowhere at all. Without that separation the agent starts from zero every morning. You write the file for your own repo and try it on a real task straight away.
12:30
Lunch
The ten rules
Every rule with the incident behind it, with a date and with what it cost. Credentials in the transcript. A firewall rule that takes the production API offline for two hours. A cache that halves a media library. It is the most uncomfortable block of the day.
Extending the agent
Slash commands, subagents, skills and a small MCP server on your own API. You build a command and a subagent that you keep afterwards.
15:45
Break
When it goes wrong
The recurring failure patterns: the fix that only repairs the surface. The detour when the named path does not work. The rebuild where one line would have done. And the classic that costs the most hours: the agent reports done without having run it. We practise spotting that in the wording before you notice it in production.
Rollout in the team
Cost and consumption, model choice, branch rules, protection on main, a guard in CI and the short list of things the agent never does without a human.
Wrap-up
Everyone leaves with three rules to put into practice on Monday. Written down. Experience says a resolution lasts until Tuesday.
Dates
A date runs from four registrations. Until it is confirmed, your registration is non-binding and free. You will know at least ten days in advance whether the date goes ahead. The invoice comes only after that.
Thursday, 12 November 2026
Grell37, Grellstraße 37, Berlin Prenzlauer Berg. Greifswalder Straße S-Bahn station, four minutes on foot.
€690
Pilot price
Thursday, 10 December 2026
Grell37, Grellstraße 37, Berlin Prenzlauer Berg. Greifswalder Straße S-Bahn station, four minutes on foot.
€890