Expose select item option mapping

[Tibor Rac]

Hi everyone,

I'm playing with webMCP on a search form using imperative implementation (next.js app). The form has several quite long lists eg. cities (200+ items), categories (~100).

The form submits the cityId and categoryId, so the agent should be able to resolve the city from the prompt to the corresponding ids. 

Is there a specific schema structure to expose the list/mapping? 

Just generate as description text? It might work, but looks eh..

Create a tool for resolving ids and referring it in the cityId field description?

Thanks

Tibor

[François Beaufort]

Hey Tibor,

I'm happy to see I'm not the only one facing this issue. See https://issues.chromium.org/484936846

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[Tibor Rac]

Hey François,

Thanks for the heads-up. I managed to kinda get it working by using an additional tool, but it adds extra complexity. I now have to handle edge cases and fuzzy matching, which ideally shouldn’t be necessary if the model could understand it correctly in the first place.

I’m following the bug report.

[François Beaufort]

I've noticed an additional tool was also helpful in https://issues.chromium.org/issues/484936846#comment2 but like you said, it would be nice if it wasn't necessary.