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Eval Harness Generator

Tools · For you

Eval Harness Generator

Paste a prompt and examples, get a runnable TypeScript eval.

The prompt you want to test3-5 example inputs (and what good output looks like)

Give a prompt you're about to change and a few example inputs. Get a plain-TypeScript regression eval — property-based cases, an assert function, and a runnable main — so you can change the prompt without breaking it.

Free up to 3 runs/day. Upgrade for unlimited.

Where this leads

This is the free, self-serve side of the Build & Run offer.

See the Build & Run offer →

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Eval Harness Generator · SDEN