Fix Prompt#validate_arguments! crash when arguments are nil#246
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koic merged 1 commit intomodelcontextprotocol:mainfrom Mar 1, 2026
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Fix Prompt#validate_arguments! crash when arguments are nil#246koic merged 1 commit intomodelcontextprotocol:mainfrom
Prompt#validate_arguments! crash when arguments are nil#246koic merged 1 commit intomodelcontextprotocol:mainfrom
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atesgoral
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Mar 1, 2026
atesgoral
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Mar 1, 2026
`Prompt#validate_arguments!` called `required_args` which does `arguments_value.filter_map`, crashing with `NoMethodError` when `arguments_value` is `nil` (the default for prompts without declared arguments). Additionally, passing `nil` as args caused a crash on `args.keys`. Fix by defaulting `arguments_value` to `[]` and guarding against `nil` args.
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Motivation and Context
Prompt#validate_arguments!calledrequired_argswhich doesarguments_value.filter_map, crashing withNoMethodErrorwhenarguments_valueisnil(the default for prompts without declared arguments). Additionally, passingnilas args caused a crash onargs.keys.Fix by defaulting
arguments_valueto[]and guarding againstnilargs.How Has This Been Tested?
Added a repro test to verify the fix and prevent regression.
Breaking Changes
None.
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