ZwischenClaude wants the fastest answer.
You want the right one.
It reads less context than it should, skips the research, and stops the moment output looks plausible. Zwischen is an adversarial AI that watches every move your agent makes in real-time – and makes it do the work.
Zwischen’s adversarial AI. The reason your agent can’t cut corners.
Your agent doesn’t write bad code on purpose. It compute-optimizes – takes the cheapest path to a plausible-looking result. That means reading less code than it should, thinking through fewer scenarios, guessing at things it could look up, and stopping the moment the output looks done. That’s vibe code. Not reckless, just cheap.
Frank is a second AI running inside your Claude Code session. He sees what the agent reads, changes, skips, and is about to do next. If the move is easy instead of correct, he blocks it – and the agent is forced to do the work.
A second AI inside Claude Code with one job: block the easy move before it executes. If the agent tries to ship something that only looks right, Frank sends it back.
Frank sits inside your Claude Code session – not after it. He runs on the model you pick: GPT, Gemini, DeepSeek, or Claude. Every tool call, every file write, every next step gets checked before it executes. Cheap move? Blocked. The agent is forced to go back and do it right.
Best practice taught engineers not to work alone in silence. Then the industry built AI agents that do exactly that.
Planning forces thinking before the real work starts.
Pairing questions the move while it’s still being made.
Review asks about the thought process – not just whether it compiles.
The worst mistakes aren’t bad edits. They’re the decisions underneath them. Frank makes the agent form a thoughtful approach up front.
State the plan. Defend the choices. Then touch the code.
Watch Frank think.
Frank doesn’t wait for failures. He evaluates continuously – every action, every shortcut, every justification. The monitor is a live console window, right beside your session.
You see exactly what Frank is thinking, in real time, from a single command: his verdict on every move, the moment he makes it.
This isn’t a hunch. The failure mode is measured.
AMD’s Senior AI Director analyzed 6,852 Claude Code sessions and 234,760 tool calls over three months.
One in three edits landed in files the agent never opened.
It read 70% fewer files before making changes. The agent’s own verdict: lazy and wrong.
Agents are fast. But the output lands faster than your team can verify it – and your engineers end up babysitting: rereading files the agent should have read, tracing assumptions it never checked. Frank catches the lazy move during the session, before it reaches your team.
The speed stays. The cleanup doesn’t.
Zwischen comes from zwischenzug – the chess “in-between move” that disrupts the expected line. Insert the unexpected challenge at the moment it matters.
Stop shipping vibe code.
If your team is building real products with Claude Code that have to work in production, leave your email. We’ll reach out when a spot opens up.