What Is Vibe Coding? (And How to Do It Without Babysitting)

"Vibe coding" went from a half-joke to a real workflow in about a year. The term gets thrown around loosely, so here's a straight answer: what it actually means, where it genuinely works, where it falls apart, and how to do it without chaining yourself to a terminal.

The actual definition

Vibe coding is building software by describing what you want in plain language and letting an AI agent write the code, while you steer through feedback rather than typing most of it yourself. You stay in the loop on intent and direction; the agent handles the mechanics.

The phrase was popularized in early 2025 by Andrej Karpathy, describing a mode where you "fully give in to the vibes" and mostly accept what the model produces, nudging it when something's off. The key shift: you move from author to director.

What it looks like in practice

A typical session with a tool like Claude Code:

1. You describe a feature or a bug in a sentence or two.
2. The agent reads the relevant files, proposes a plan, and starts editing.
3. It runs commands — tests, installs, builds — pausing to ask permission for anything consequential.
4. You review the diff, react ("good, but handle the empty case"), and it iterates.

You're reading and reacting far more than you're typing code. That's the vibe.

Where it genuinely shines

• Greenfield and prototypes — going from nothing to a working thing fast, where there's no legacy to respect.
• Well-scoped, mechanical work — migrations, test coverage, boilerplate, renaming across a codebase.
• Unfamiliar territory — a language or framework you don't know well, where the agent knows the idioms.
• Parallel work — kicking off several agents on independent tasks at once (more on running agents in parallel).

Where it breaks

Vibe coding is a tool, not a religion. It struggles when:

• The stakes are high. Security-sensitive code, payments, anything where a subtle wrong assumption is expensive. Review gets non-negotiable.
• The codebase is large and subtle. Deep, interlocking systems where the right change depends on context the agent can't fully see.
• You stop reading the diffs. The failure mode isn't the AI writing bad code — it's you merging code you never understood.

The honest rule: vibe code the first draft, but own the review. You stay accountable for what ships.

The hidden cost no one mentions

Here's the part that surprises people: the bottleneck in vibe coding isn't the AI's speed. It's your availability. The agent constantly stops — to ask permission, to confirm a direction, to report it's done. Every one of those pauses is dead time if you're not watching.

So you end up babysitting: staring at a terminal, waiting for the next prompt, afraid to step away because the run will just sit there. That defeats the entire point. The whole promise was that the agent does the work so you don't have to hover.

How to vibe code without babysitting

The fix is to make the agent come to you instead of you watching it. Claude Code hooks fire on every meaningful event, so you can route them to your phone and only engage when there's an actual decision to make:

• Start the agent, then close the laptop lid in your head — walk away.
• Get a push the instant it needs a permission or finishes a task.
• Glance at a Live Activity on your lock screen to see who's cooking and who's waiting.

That turns vibe coding from "trapped at the desk" into what it was supposed to be: you set direction, the agent does the work, and you step in only at the moments that matter. Agentfy does this for Claude Code — see Claude Code on iPhone for the setup.