feat: take initial prompt from URL query parameter

[Efe-Cal]

Hi @Mostlime12195 ! I would love it if we could set the initial prompt from a redirect. With this PR, when a user visits the page with an initialPrompt parameter, the chat input is automatically pre-filled with its value.

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Project	Deployment	Actions	Updated (UTC)
libre-assistant	Ready	Preview, Comment	Mar 1, 2026 3:32pm

[Mostlime12195]

This is very cool! I can't believe I hadn't thunk of this sooner. Though, could make the tiniest change and change the name initialPrompt to just q for simplicity and to match other search engines?

Also, this is entirely your choice, could you make it so that it doesn't just fill out the input, but submits it too? This way people could effectively use the app as a search engine.

Again, much thanks for the PR! I wouldn't have thought of this idea in a million years.

[Efe-Cal]

The pleasure is mine! Thank you for building this amazing site.

could you make it so that it doesn't just fill out the input, but submits it too?

Maybe then also a model parameter would be useful (to set a desired model before starting the conversation)?

[Mostlime12195]

Maybe then also a model parameter would be useful (to set a desired model before starting the conversation)?

Yes! The idea crossed my mind but I didn't want to put too much work on your shoulders. Thank you for offering.

[Mostlime12195]

Hi! the model parameter isn't working in the latest commit. I assume it's because model IDs typically have slashes in them (i.e. minimax/minimax-m2.5) which may break it, even when you encode it into something like minimax%2Fminimax-m2.5.

Just my opinion, but perhaps we could filter the model IDs? Instead of minimax/minimax-m2.5, we could use minimax-minimax-m2.5. This way, when reading the parameter, we turn the first hyphen into a slash (the value minimax-minimax-m2.5 will be converted to minimax/minimax-m2.5 before being used). This is the simplest method I could think of.

[Efe-Cal]

This way, when reading the parameter, we turn the first hyphen into a slash

@Mostlime12195
This is genius! Implemented it.