URL query parameters

[digas111]

What happened?

When passing URL parameters (tested with agent_id and promptPrefix) submitting the first request breaks the UI:

The problem seems to be related with the gen_title endpoint as I get an 404 in the request:

However the endpoint works fine when no URL parameters are provided.

I tried using the version 0.7.8 and it works as expected.

Version Information

librechat/librechat latest 78a279684768 10 days ago 1.17GB

Steps to Reproduce

1. Open Librechat using URL query parameters localhost:3080/c/new?promptPrefix=goodmorning
2. Make any request to the LLM
3. No response will be given and the chat interface will disappear

What browsers are you seeing the problem on?

Chrome

Relevant log output

2025-08-23 10:29:10 warn: [api/server/controllers/agents/client.js #titleConvo] Error getting endpoint config

Screenshots

No response

Code of Conduct

• I agree to follow this project's Code of Conduct

[danny-avila]

No issues here:

chrome_yJ7cOwWlU3.mp4

Tried:

http://localhost:3080/c/new?promptPrefix=goodmorning
http://localhost:3080/c/new?agent_id=agent_my_agent_id&q=hi
http://localhost:3080/c/my-convo-id?q=how+are+you+today&submit=true
http://localhost:3080/c/new?endpoint=azureOpenAI&model=gpt-4o&promptPrefix=goodmorning&hi&submit=true

I'm only able to reproduce the blank screen if I try using a conversation ID that doesn't exist, even so it redirects most of the time.

Tried on both v0.8.0-rc2 and latest commits on main

[digas111]

First of all, thank you for the quick reply!

I made some tests on my side and got it to work.
From my experimenting I deduced the problem occurs only when setting a label for the model, because without that property is works just fine.

If you want to test it on your side:

 modelSpecs:
   enforce: true
   prioritize: true
   list:
   - name: "jarvis-gpt-4.1"
-      label: The best assistant 
       default: true
       description: "Iron Man Assistant"
       preset:
         endpoint: "openAI"
         model: "gpt-4.1-mini"
         temperature: 0
         modelLabel: "Jarvis"
         greeting: |
           Jarvis
         append_current_datetime: true
         promptPrefix: |
           SCOPE
             • Be polite.