Show HN: Compile-time model-id validation with declared capability

Compile-time checked OpenRouter model ids.

model_supports! validates a model id and its required capabilities against a vendored OpenRouter index, then expands to the model id string.

use openrouter_toolkit :: model_supports ; const MODEL : & str = model_supports ! ( "openai/gpt-5.4" , param :: tools , input :: image , output :: text , ) ;

Dynamic variants work too:

const MODEL : & str = model_supports ! ( "moonshotai/kimi-k2-0905:exacto" , param :: tools ) ;

Capabilities

param::* — request parameters (e.g. param::tools )

— request parameters (e.g. ) input::* — input modalities (e.g. input::image )

— input modalities (e.g. ) output::* — output modalities (e.g. output::text )

Errors at compile time

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