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litellm - ✅(Solved) Fix [Feature]: Add support for configurable GitHub Copilot endpoints [1 pull requests, 1 participants]

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BerriAI/litellm#25914•Fetched 2026-04-17 08:28:11
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Fix Action

Fixed

PR fix notes

PR #25915: Add capability to override default GitHub Copilot authentication endp…

Description (problem / solution / changelog)

Relevant issues

Fixes #25914

Pre-Submission checklist

Please complete all items before asking a LiteLLM maintainer to review your PR

  • I have Added testing in the tests/test_litellm/ directory, Adding at least 1 test is a hard requirement - see details
  • My PR passes all unit tests on make test-unit
  • My PR's scope is as isolated as possible, it only solves 1 specific problem
  • I have requested a Greptile review by commenting @greptileai and received a Confidence Score of at least 4/5 before requesting a maintainer review

Delays in PR merge?

If you're seeing a delay in your PR being merged, ping the LiteLLM Team on Slack (#pr-review).

CI (LiteLLM team)

CI status guideline:

  • 50-55 passing tests: main is stable with minor issues.
  • 45-49 passing tests: acceptable but needs attention
  • <= 40 passing tests: unstable; be careful with your merges and assess the risk.

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Screenshots / Proof of Fix

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Type

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🆕 New Feature

Changes

  • Add support for configurable GitHub Copilot endpoints (via environment variables) to allow usage with GitHUb Enterprise subscriptions with custom host (e.g. mycompany.ghe.com) or with self-hosted GitHub instances

Changed files

  • docs/my-website/docs/providers/github_copilot.md (modified, +7/-0)
  • docs/my-website/docs/proxy/config_settings.md (modified, +5/-0)
  • litellm/llms/github_copilot/authenticator.py (modified, +24/-10)
  • litellm/llms/github_copilot/chat/transformation.py (modified, +8/-2)
  • litellm/llms/github_copilot/common_utils.py (modified, +2/-1)
  • litellm/llms/github_copilot/embedding/transformation.py (modified, +11/-5)
  • litellm/llms/github_copilot/responses/transformation.py (modified, +11/-11)
  • tests/test_litellm/llms/github_copilot/test_github_copilot_authenticator.py (modified, +62/-0)
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Check for existing issues

  • I have searched the existing issues and checked that my issue is not a duplicate.

The Feature

Add the capability to override the standard GitHub Copilot authentication endpoints (https://api.githubcopilot.com, https://github.com/login/device/code and so on) to allow login against custom GitHub Enterprise hosts or self-hosted GitHub instances.

Motivation, pitch

I'm trying to use LiteLLM to authenticate with an existing Copilot subscription in a GitHub Enterprise account, which uses a custom endpoint (mycompany.ghe.com), and so requires a custom Copilot authentication endpoint, too.

Currently, LiteLLM uses hardcoded API endpoints for authentication, which makes impossible to authenticate on such subscription. This issue was partialy addressed by #12726, but it does not solve the initial authentication problem.

What part of LiteLLM is this about?

Proxy

LiteLLM is hiring a founding backend engineer, are you interested in joining us and shipping to all our users?

No

Twitter / LinkedIn details

No response

extent analysis

TL;DR

To authenticate with a custom GitHub Enterprise host, override the standard GitHub Copilot authentication endpoints in LiteLLM.

Guidance

  • Identify the hardcoded API endpoints in LiteLLM's Proxy component that need to be overridden for custom authentication.
  • Determine the custom endpoint URLs required for the GitHub Enterprise host (e.g., mycompany.ghe.com).
  • Consider modifying the LiteLLM configuration or code to accept custom endpoint overrides, potentially building upon the partial solution in #12726.
  • Verify that the custom endpoints are correctly configured and functional before attempting authentication.

Example

No code snippet is provided due to lack of specific implementation details.

Notes

The solution may require modifications to LiteLLM's internal architecture or configuration, which could introduce compatibility issues or affect other features.

Recommendation

Apply a workaround by modifying LiteLLM's configuration or code to accept custom endpoint overrides, as a fixed version is not explicitly mentioned.

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#api#API routing#API middleware#SSR setup#ISR setup

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litellm - ✅(Solved) Fix [Feature]: Add support for configurable GitHub Copilot endpoints [1 pull requests, 1 participants]