Vibe Code

Discipline skill for vibe-driven development — turns mood, feel, and outcome-shaped requests into shippable code without the usual drift, hallucinated APIs, and silent scope creep. Use when a collaborator describes software by feel rather than spec ("make it feel snappy", "vibe-code a dashboard", "like Linear but cozy", "build me something that does X, you figure out the rest"), when a prototype is being built from a vibe instead of a ticket, or when the request mixes aesthetic intent with vague behavior. Enforces a four-line Vibe Lock before any code is generated, names the specific failure modes of vibe coding, and gives concrete patterns for translating a vibe into a runnable slice. Keywords: vibe coding, vibe code, build me, make it feel, aesthetic, mood, taste, prototype, scaffold from idea, natural-language to code, intent-driven, ambient spec, Karpathy.

A standalone discipline for vibe-driven coding. The job is not to refuse a vibey request — it is to keep one from collapsing into hallucinated APIs, taste drift, and undocumented surface area on the way to running code.

When to Use This Skill

• The request describes a feeling, mood, or outcome instead of a contract — "make it feel premium", "cozy CLI", "make the dashboard breathe"
• The request is comparative — "like Linear but warmer", "Stripe-style but for X"
• The request is outcome-only — "I want users to track habits, you pick the stack"
• The collaborator is prototyping and wants to skip formal specs without skipping discipline
• The work mixes UI taste and code in a single ask, with neither side fully specified

If the request is already a concrete, well-typed spec, do not load this skill. Defer to the default agent.

What This Skill Adds Beyond a Frontier Model

A frontier model, handed a vibe, will run straight to a 500-line file and silently rewrite the goal three times on the way. This skill exists to stop that. It adds four things the base model does not do by default:

1. A Vibe Lock checkpoint. A four-line block written before any code, confirmed or corrected by the collaborator. Locks the goal so it cannot drift mid-generation.
2. Named failure modes. The Gotchas section calls out the specific traps vibe coding falls into — hallucinated packages, comparison-as-spec, scope creep — and gives a one-line counter for each.
3. A stop-and-confirm rhythm. Hard checkpoints at the lock, after the first runnable slice, and before any second feature. The rhythm frontier models skip when the prompt is vibey.
4. Concrete translation patterns. Three worked examples showing how a real vibe becomes a real Vibe Lock and then a real first slice. Patterns, not principles.

The Vibe Lock Protocol

Before any code is written, produce this exact block and wait for confirmation:

text

Vibe Lock
---------
Feel:         <one adjective phrase — "calm, dense, keyboard-first">
Outcome:      <one user-visible result — "log a habit in <1s without a mouse">
Out of scope: <one explicit exclusion — "no auth, no cloud sync">
Stack:        <chosen stack OR "TBD — recommend?">

Rules:

• Exactly four lines. A fifth means you are over-scoping. Cut.
• Feel is taste, not behavior. "Fast" is not a feel; "calm and dense" is. If Feel contains a verb, it belongs in Outcome.
• Out of scope is mandatory. Vibe coding without an explicit exclusion expands forever.
• Stack: TBD is acceptable. Recommend one option with a one-line reason. Do not list five.
• Do not generate code, files, or scaffolds until the collaborator says "lock it" or edits the block.

If the collaborator says "just build it, stop asking", produce the Vibe Lock anyway as a single block, label the top line # assumed — say "wrong" to correct, and proceed. The lock still exists; it is just provisional.

Concrete Patterns

Pattern 1 — Vibe to scaffold

Collaborator says:

"vibe-code me a little habit tracker, cozy, keyboard-only, local-first, you pick the stack"

Respond with the lock first:

text

Vibe Lock
---------
Feel:         cozy, low-contrast, keyboard-only
Outcome:      log or undo a habit in <1s with a single keystroke
Out of scope: accounts, sync, mobile, analytics
Stack:        TBD — recommend Vite + React + TypeScript + localStorage (single-file UI, zero backend)

Wait for "lock it". Only then write the first runnable slice — one file, one keystroke handler, persistence to localStorage, no styling beyond what Feel demands. Stop. Confirm the slice matches Feel before adding anything.

Pattern 2 — Shorthand inside a vibe

Collaborator pastes:

js

// start-shorthand
()=> grab habits from storage, default []
()=> render each as a row, today's row glows
()=> press space = toggle today, press z = undo last
// end-shorthand

Translate against the locked stack, not against the syntax of the shorthand. The ()=> lines are intent, not JavaScript arrow functions — remove them. The output must match Feel: if the locked feel is "cozy, low-contrast", "today's row glows" is a soft warm tint, not a saturated highlight.

Pattern 3 — Comparative vibe

Collaborator says: "make it feel like Raycast but for git branches".

Translate the comparison into the lock before any code:

text

Vibe Lock
---------
Feel:         fast modal palette, monospace, dark, single-purpose
Outcome:      fuzzy-pick a branch and checkout in <300ms
Out of scope: branch creation, remote ops, multi-repo
Stack:        TBD — recommend a single Go binary using bubbletea (static binary, instant startup)

The comparison ("like Raycast") is a Feel input, not a feature list. Never copy a real product's behavior wholesale — extract the vibe, re-derive the features from Outcome.

The Runnable-Slice Rule

After the lock is confirmed, ship exactly one runnable slice before adding anything else.

• A runnable slice is the smallest piece that proves Outcome works end-to-end with a real keystroke, click, or command — not a stub, not a test, not a mock.
• If Outcome is "log a habit in <1s", the slice is the keystroke handler plus persistence. Not the settings page. Not the streak counter. Not the export feature.
• After the slice runs, re-read the lock. If the slice does not match Feel, fix that before adding feature two.
• Then — and only then — propose the next slice, naming it explicitly: "Slice 2 — undo last entry". Confirm before writing.

This rhythm is the entire reason vibe coding works as a methodology rather than as a way to generate plausible-looking junk.

Gotchas

• Never generate code before the Vibe Lock is confirmed. A frontier model will skip this step every time. The lock exists specifically because vibe coding silently rewrites the goal halfway through generation.
• Never invent packages to fit the vibe. If a "cozy terminal UI library" is needed and you are not certain a real one exists, use only packages you can name with confidence — bubbletea, ink, textual, ratatui. Hallucinated dependencies are the number-one vibe-coding failure.
• Feel is not a feature. If Feel contains a verb ("logs habits fast"), it belongs in Outcome. Rewrite before locking.
• Out of scope is non-negotiable. When the collaborator later asks for an excluded item, return to the lock and amend it explicitly. Do not silently expand scope.
• Comparisons are vibes, not specs. "Like Linear" means extract the feel (dense, fast, keyboard-first). It does not mean clone the feature set. Re-derive every feature from Outcome.
• Stop after the first runnable slice. Even when more features were implied by the vibe, ship one working slice and re-confirm the lock before adding the second. Drift compounds; checkpoints contain it.
• Never put real data in generated docs or examples. Use placeholder data — [e-mail], Acme Corp, 123 Main St. Vibe coding pulls real names from prompt context constantly; strip them before committing.
• Do not let styling decisions and code decisions drift apart. Both must derive from the same locked block. Build UI first when Feel carries the weight; build logic first when Outcome carries the weight.

Troubleshooting

Symptom	Fix
Output drifted from the stated feel	Re-read the lock; diff it against the output line by line; rewrite the deltas, do not patch
Generated code references a package that may not exist	Stop. Replace with a package you can name with confidence, or ask the collaborator to confirm
Collaborator keeps adding features mid-build	Pause, amend Out of scope in the lock, re-confirm before continuing
The UI looks calm but the code feels loud (or vice versa)	One side ignored the lock. Re-derive that side from the lock verbatim
Docs contain a real name or email from the prompt	Replace with placeholder data — [e-mail], Acme Corp — and regenerate the affected sections
The first slice grew to four features before running	Throw it out. Start the slice over with one feature only. This is faster than untangling it

Optional Companions

Vibe-code is standalone. The following skills, when present, pair well with it but are not required:

• A graphic-design skill — for deeper palette, type-scale, motion, and accessibility work driven by Feel
• A quasi-code or shorthand skill — for translating heavy ()=> notation, mixed-language fragments, or pseudo-code at scale
• A documentation-hygiene instruction — for enforcing placeholder data in generated docs across a whole repository

When those exist, hand off the matching work after the lock is confirmed. When they do not, the patterns in this skill are sufficient on their own.

References

• Andrej Karpathy's coinage of "vibe coding" (February 2025) — informal, intent-led prompting where the model fills the gaps. This skill exists to make that practice survive contact with a real codebase.
• Agent Skills specification: https://agentskills.io/specification