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Support custom LiteLlm() providers in ADK Web UI model selector

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
45/100
Issue type
Feature
Clarity
Mostly clear
Activity status
Stale
Tech stack
typescript
Domain
frontend

Research direction

Start at the Web UI Model Selector and review how its fixed Gemini model options are configured. Add the requested Custom Model (LiteLLM) inputs and ensure the selector creates and uses a LiteLlm instance with the provider/model, base URL, and secure API key; done means custom models can be selected in the UI alongside the predefined options.

Written by the indexing model from the issue text.

Description

Right now, the Web UI only lets you choose fixed Gemini models (e.g., two predefined options). There’s no UI entry or configuration to select custom models via the LiteLlm integration, even though ADK can use
LiteLlm(model="your_provider/your_model", base_url=…, api_key=…)

Expected Behavior

In the Web UI Model Selector, include an option like:

  • Custom Model (LiteLLM)
  • Provider/Namespace (text input)
  • Model name (text input)
  • Base URL (text input)
  • API Key / Token (secure input)

So the UI would create a LiteLlm instance behind the scenes, and use that as the agent’s model. This mirrors what the docs show is already supported in the Python side of ADK.

Dominant language
TypeScript
Stars
1k
Forks
266
Avg merge
10d 13h
Merged PRs (30d)
5

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

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