[NingLin Liu (ninglinLiu)]

Motivation & Context

The red teaming sample (python/samples/05-end-to-end/evaluation/red_teaming) builds its agent with FoundryChatClient(credential=credential) and passes no model. That client reads FOUNDRY_PROJECT_ENDPOINT and FOUNDRY_MODEL (env_prefix="FOUNDRY_") and ignores AZURE_OPENAI_*. The README, .env.example and the comment above the constructor still ask for AZURE_OPENAI_ENDPOINT, AZURE_OPENAI_MODEL and an optional AZURE_OPENAI_API_KEY, and never mention FOUNDRY_MODEL. Following them fails at startup with Model is required. Set via 'model' parameter or 'FOUNDRY_MODEL' environment variable.

Description & Review Guide

• What are the major changes?
  • README.md: the environment section lists FOUNDRY_PROJECT_ENDPOINT (used by both the agent and RedTeam) and FOUNDRY_MODEL, with the https://<resource>.services.ai.azure.com/api/projects/<project> endpoint format used by the other Foundry samples; the prerequisites and "The sample will" list describe a model deployed in the Foundry project / FoundryChatClient instead of Azure OpenAI.
  • .env.example: same variables.
  • red_team_agent_sample.py: the comment now says the constructor reads FOUNDRY_PROJECT_ENDPOINT, FOUNDRY_MODEL.
• What is the impact of these changes? Documentation/comments only; sample behavior is unchanged.
• What do you want reviewers to focus on? RawFoundryChatClient.__init__ in packages/foundry/agent_framework_foundry/_chat_client.py (env_prefix="FOUNDRY_", the FOUNDRY_MODEL error).

Related Issue

N/A - trivial change. Stale environment-variable names in one sample's README, .env.example and a comment; the correction follows what the sample already reads, with no behavior change.

AI Assistance

• No material AI assistance was used.
• This is an AI-assisted contribution. I reviewed, understood, and verified all submitted content and accept responsibility for it.

AI assistance details: finding the mismatch (README variables vs. the client settings the sample uses), the documentation edit, and this PR description.

Contribution Checklist

• The code builds clean without any errors or warnings
• All unit tests pass, and I have added new tests where possible
• The PR follows the Contribution Guidelines
• This PR links to an agreed issue with no competing open PR, or the Related Issue section documents a trivial-change or repository-automation exception.
• This is not a breaking change. If it is a breaking change, add the breaking change label (or add "[BREAKING]" to the title prefix, before or after any language prefix) — a workflow keeps the label and title prefix in sync automatically.

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[Copilot]

🟢 Approval recommended

No active review issues are reported for the documentation and comment updates aligning the sample’s setup with Foundry configuration.

No open issues 🎉

What changed in this PR

This PR aligns the Python red teaming sample’s setup instructions with the FOUNDRY_* settings used by FoundryChatClient. Changes are limited to documentation and comments; runtime behavior is unchanged.

Changes:

• Replace stale AZURE_OPENAI_* settings with FOUNDRY_PROJECT_ENDPOINT and FOUNDRY_MODEL.
• Document the Foundry project endpoint format and Azure CLI authentication.
• Update prerequisites and the constructor comment to match the existing client.

File	Description
python/​samples/​05-end-to-end/​evaluation/​red_teaming/​red_team_agent_sample.py	Corrects the environment-variable names in the constructor comment.
python/​samples/​05-end-to-end/​evaluation/​red_teaming/​README.md	Aligns setup instructions and prerequisites with Foundry configuration.
python/​samples/​05-end-to-end/​evaluation/​red_teaming/​.env.example	Provides the required Foundry settings and endpoint template.

_{Review effort: Balanced}