[NingLin Liu (ninglinLiu)]

Motivation & Context

The setup steps in the two Content Understanding DevUI sample READMEs tell users to set AZURE_OPENAI_RESPONSES_DEPLOYMENT_NAME=gpt-4.1, but neither sample reads that variable. Both agent.py files build the client with model=os.environ["FOUNDRY_MODEL"] (and list FOUNDRY_MODEL in their docstrings), so a .env written from the README fails with KeyError: 'FOUNDRY_MODEL' when DevUI loads the agent.

Description & Review Guide

• What are the major changes? Replace AZURE_OPENAI_RESPONSES_DEPLOYMENT_NAME with FOUNDRY_MODEL in the environment-variable block of:
  • python/samples/02-agents/devui/agent_content_understanding/README.md
  • python/samples/02-agents/devui/agent_content_understanding_file_search_azure_openai/README.md
• What is the impact of these changes? Documentation only; the samples' code and behavior are unchanged.
• What do you want reviewers to focus on? That FOUNDRY_MODEL is the variable the samples read: agent_content_understanding/agent.py line 49 and agent_content_understanding_file_search_azure_openai/agent.py line 62. No other variable in either block is affected (FOUNDRY_PROJECT_ENDPOINT and AZURE_CONTENTUNDERSTANDING_ENDPOINT match the code).

Related Issue

N/A - trivial change. A stale environment-variable name in two README setup blocks; the correction follows the variable the existing sample code 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. os.environ reads in the samples), 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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Contribution License Agreement

This Contribution License Agreement (“Agreement”) is agreed to by the party signing below (“You”),
and conveys certain license rights to Microsoft Corporation and its affiliates (“Microsoft”) for Your
contributions to Microsoft open source projects. This Agreement is effective as of the latest signature
date below.

1. Definitions.
   “Code” means the computer software code, whether in human-readable or machine-executable form,
   that is delivered by You to Microsoft under this Agreement.
   “Project” means any of the projects owned or managed by Microsoft and offered under a license
   approved by the Open Source Initiative (www.opensource.org).
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   have disclosed under Section 3). You represent that You have secured permission from Your employer to
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   employer or Your employer has intellectual property rights in Your Submission by contract or applicable
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   REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING, AND EXCEPT FOR THE WARRANTIES
   EXPRESSLY STATED IN SECTIONS 3, 4, AND 6, THE SUBMISSION PROVIDED UNDER THIS AGREEMENT IS
   PROVIDED WITHOUT WARRANTY OF ANY KIND, INCLUDING, BUT NOT LIMITED TO, ANY WARRANTY OF
   NONINFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE.
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   the parties consent to exclusive jurisdiction and venue in the federal courts sitting in King County,
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   defenses of lack of personal jurisdiction and forum non-conveniens.
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    the parties relating to the subject matter hereof. This Agreement may be assigned by Microsoft.

[Copilot]

🟢 Approval recommended

Both documentation corrections match the agents’ existing FOUNDRY_MODEL reads, with no unresolved issues.

No open issues 🎉

What changed in this PR

Corrects the setup instructions for two Content Understanding DevUI samples to match the environment variable their agents already read.

Changes:

• Replaces AZURE_OPENAI_RESPONSES_DEPLOYMENT_NAME with FOUNDRY_MODEL in both README environment blocks.
• Leaves sample code, model values, and other environment variables unchanged.

File	Description
python/​samples/​02-agents/​devui/​agent_content_understanding/​README.md	Corrects the model environment variable in setup instructions.
python/​samples/​02-agents/​devui/​agent_content_understanding_file_search_azure_openai/​README.md	Applies the same correction to the file-search sample.

_{Review effort: Balanced}