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How risky is this migration?

Paste a snippet from an old .NET Framework codebase. Get an honest risk read on moving it to modern .NET — with the specific blockers named, not just a vague "it depends."

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No API key, no signup on this site — it uses your normal Claude.ai usage. Opens on claude.ai.

No key stored yet. Get one at platform.claude.com — the check calls the API directly from your browser with your key, so you pay for your own usage (typically a fraction of a cent per check). The key is saved only in this browser's local storage; this site has no server and never sees it.

Example result for the code above — click “Estimate the risk” for your own.
Migration risk badge preview