fix: eval parameters omit null description - #613
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resolves https://linear.app/braintrustdata/issue/SDK-92/remote-eval-params-with-no-description-serialize-description-null
Summary
Remote eval dev mode (
braintrust eval <file> --dev) hid all evals in the playground UI when any eval declared a parameter without adescription.All three branches of
serialize_eval_parameters(prompt, model, data) emitted"description": nullwhen unset. The playground's zod schema only accepts a string or an absent key, and it validates the whole/listresponse in onesafeParse— so one description-less parameter hid every eval on the endpoint.Fix: include
descriptiononly when it's notNone, same asdefaultalready is. #508 fixed this pattern for prompt defaults;descriptionwas missed.Test
With proposed change the remote eval is detected:
Same remote eval running in 0.30.1 is not detected:
