// GLOSSARY -- AGENTIC AI

What is Vibe Coding?

1 min read Updated

Vibe coding is the practice of building software by describing desired behavior to an AI coding assistant in natural language, iterating through conversation rather than writing code directly — coined by Andrej Karpathy in early 2025.

WHY IT MATTERS

Vibe coding represents a fundamental shift in software development. Instead of writing code line by line, developers describe what they want ('build me a DeFi dashboard that shows my positions across Uniswap and Aave') and let AI generate the implementation.

The approach dramatically lowers the barrier to building software. Non-programmers can create functional applications. Experienced developers can prototype in hours instead of days. But it comes with a risk: people building systems they don't fully understand.

For financial applications, vibe coding is a double-edged sword. Anyone can quickly build an agent that interacts with smart contracts — but without deep understanding of transaction mechanics, gas estimation, or edge cases, the resulting agent might have critical vulnerabilities.

HOW POLICYLAYER USES THIS

Vibe-coded financial agents especially need guardrails. When developers don't fully understand the code their AI generated, PolicyLayer provides a safety net — enforcing spending limits and controls regardless of implementation quality.

FREQUENTLY ASKED QUESTIONS

Is vibe coding a real development practice?
Yes. The term was coined by Andrej Karpathy (ex-OpenAI, ex-Tesla AI director) and describes a practice millions of developers now use with tools like Cursor, GitHub Copilot, and Claude. It's becoming mainstream, not a fad.
Is vibe coding safe for financial applications?
It's risky without guardrails. Vibe-coded agents might have subtle bugs in transaction handling, gas estimation, or error recovery. Always add spending controls, audit code that handles money, and test thoroughly.
Will vibe coding replace traditional development?
For many applications, partially. Complex systems still require deep understanding. The likely evolution: vibe coding for prototypes and simple apps, with traditional expertise for critical systems like financial infrastructure.

FURTHER READING

Enforce policies on every tool call

Intercept is the open-source MCP proxy that enforces YAML policies on AI agent tool calls. No code changes needed.

npx -y @policylayer/intercept
github.com/policylayer/intercept →
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