Vibe Coding Cleans Contact Data, But It Can't Verify It's Real

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Ask an AI coding assistant to write a script that deduplicates your customer database, and it can produce working code in under a minute. Ask it whether the email addresses, phone numbers, or mailing addresses in that same database actually exist and can be used, and the answer becomes far less certain.

That distinction highlights where vibe coding reaches its practical limits for contact and customer data.

Vibe Coding Is Genuinely Useful, Up to a Point

Generating code from a natural language prompt and shipping it with minimal review has become routine for developers in 2026. It is fast, low-friction, and for many tasks, it is exactly the right tool. Exploring an unfamiliar dataset, sketching a matching rule against a sample, or running a one-off script on a file that will never touch production—vibe coding handles all of that well.

The trouble starts when the same instinct gets applied to...

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