[Naveen Chatlapalli (1aifanatic)]

Motivation & Context

These Python samples moved to FoundryChatClient in the Foundry migration (#6557), but their READMEs still tell readers to set AZURE_OPENAI_* names that the code never reads. This is the Python counterpart of #9600 for .NET.

README	asks for	the sample reads	following the README
02-agents/devui/agent_content_understanding	AZURE_OPENAI_RESPONSES_DEPLOYMENT_NAME	FOUNDRY_MODEL	KeyError: 'FOUNDRY_MODEL' at import
02-agents/devui/agent_content_understanding_file_search_azure_openai	same	FOUNDRY_MODEL	same
02-agents/context_providers (azure_ai_foundry_memory.py)	AZURE_OPENAI_EMBEDDING_DEPLOYMENT_NAME	AZURE_OPENAI_EMBEDDING_MODEL	KeyError
02-agents/skills/file_based_skill, mixed_skills	AZURE_OPENAI_MODEL	FOUNDRY_MODEL, default gpt-4o-mini	the configured model is silently ignored
05-end-to-end/chatkit-integration	AZURE_OPENAI_ENDPOINT / _API_VERSION / _MODEL	FoundryChatClient (FOUNDRY_PROJECT_ENDPOINT, FOUNDRY_MODEL)	ValueError: Model is required. Set via 'model' parameter or 'FOUNDRY_MODEL' environment variable.

Two READMEs also show a FOUNDRY_PROJECT_ENDPOINT that is not a Foundry project endpoint: https://your-project.api.azureml.ms and https://your-project.openai.azure.com/.

Description & Review Guide

• What are the major changes? README text only:
  • Use the variable names each sample reads.
  • Show the https://<account>.services.ai.azure.com/api/projects/<project> endpoint format that the sibling READMEs use.
  • In the ChatKit README, the prerequisites and component description now say the server uses FoundryChatClient.
• What is the impact of these changes? Documentation only.
• What do you want reviewers to focus on? Nothing special.

I found these by comparing the environment variables each sample README names with the names its Python files and .env templates reference. The rows above with errors were reproduced by setting only the README's variables. The other matches from that comparison are variables the OpenAI/Azure clients read implicitly, such as AZURE_OPENAI_API_KEY in the chat-client README, so they are correct and unchanged.

Related Issue

N/A - trivial change: the READMEs are corrected to the variable names the samples already read.

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: Claude Code helped compare README variables with what each sample reads, reproduce the failures, make the edits, and draft this 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.

🤖 Generated with Claude Code

[Copilot]

🟢 Approval recommended

The narrow documentation corrections match the sample configuration contracts, with no unresolved issues identified.

No open issues 🎉

What changed in this PR

Updates six Python sample READMEs to document the settings their existing Foundry-based implementations read. These are documentation-only corrections; runtime behavior is unchanged.

Changes:

• Replace outdated model and embedding environment variable names.
• Correct two Foundry project endpoint examples.
• Align ChatKit prerequisites and component descriptions with FoundryChatClient.

File	Description
python/​samples/​05-end-to-end/​chatkit-integration/​README.md	Documents Foundry configuration, prerequisites, and client usage.
python/​samples/​02-agents/​skills/​mixed_skills/​README.md	Corrects the project endpoint and model variable.
python/​samples/​02-agents/​skills/​file_based_skill/​README.md	Uses FOUNDRY_MODEL for model configuration.
python/​samples/​02-agents/​devui/​agent_content_understanding/​README.md	Corrects the project endpoint and model variable.
python/​samples/​02-agents/​devui/​agent_content_understanding_file_search_azure_openai/​README.md	Uses FOUNDRY_MODEL for model configuration.
python/​samples/​02-agents/​context_providers/​README.md	Corrects the embedding model variable.

_{Review effort: Balanced}