[AGX1-125] Add a one-line comment to the top of setup.py explaining what the Agentex SDK does

[danielmillerp]

Summary

• Created setup.py with a single-line comment explaining what the Agentex SDK is: a Python client library for building and deploying AI agents on the Agentex platform.

Test plan

• Verified that setup.py contains the descriptive comment at the top
• Confirm the comment is accurate and follows project conventions

🤖 Generated with Claude Code

Greptile Summary

This PR adds a new setup.py file containing a single comment describing the Agentex SDK. No functional code is added.

• Potential build tool confusion: The project uses pyproject.toml with hatchling as its build backend. Adding an empty setup.py (no setup() call) could confuse tools that detect setup.py and attempt to use it for building. Consider adding this documentation to pyproject.toml instead, or to the existing README.

Confidence Score: 3/5

• Low-risk change but introduces a file that could confuse Python build tooling in edge cases.
• The PR adds only a comment file with no executable code, so there's no immediate runtime risk. However, the presence of a setup.py in a pyproject.toml/hatchling project is unconventional and could cause subtle issues with build tools or CI pipelines that detect setup.py. Score of 3 reflects that while the change is small, the approach is questionable.
• setup.py — should be evaluated for whether this file should exist at all in a hatchling-based project.

Important Files Changed

Filename	Overview
setup.py	New file containing only a comment. The project uses pyproject.toml/hatchling for builds — adding setup.py could confuse build tools that detect its presence.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[setup.py added to repo root] --> B{Build tool invoked}
    B -->|pip install / hatchling| C[Reads pyproject.toml]
    C --> D[Uses hatchling build backend]
    D --> E[Build succeeds normally]
    B -->|python setup.py install| F[Reads setup.py]
    F --> G[No setup call found]
    G --> H[Silent no-op / failure]
    B -->|Older tools detect setup.py| I[May attempt setuptools build]
    I --> G

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[greptile-apps]

Empty setup.py may confuse build tools

This project uses pyproject.toml with hatchling as its build backend (see [build-system] in pyproject.toml). Adding a setup.py that contains only a comment — with no setup() call — is potentially problematic:

1. Tool confusion: Some tools (e.g., older versions of pip, python setup.py install, or CI scripts) detect the presence of setup.py and may attempt to use it instead of pyproject.toml. Since this file has no setup() call, it would silently do nothing.
2. Misleading presence: Having a setup.py in a pyproject.toml-based project implies a setuptools build, which this project doesn't use.

If the goal is to document what the SDK does, consider adding this comment to the top of pyproject.toml instead, or to the project description field (which already contains a similar description: "The official Python library for the agentex API").

Prompt To Fix With AI

This is a comment left during a code review.
Path: setup.py
Line: 1

Comment:
**Empty `setup.py` may confuse build tools**

This project uses `pyproject.toml` with `hatchling` as its build backend (see `[build-system]` in `pyproject.toml`). Adding a `setup.py` that contains only a comment — with no `setup()` call — is potentially problematic:

1. **Tool confusion**: Some tools (e.g., older versions of pip, `python setup.py install`, or CI scripts) detect the presence of `setup.py` and may attempt to use it instead of `pyproject.toml`. Since this file has no `setup()` call, it would silently do nothing.
2. **Misleading presence**: Having a `setup.py` in a `pyproject.toml`-based project implies a setuptools build, which this project doesn't use.

If the goal is to document what the SDK does, consider adding this comment to the top of `pyproject.toml` instead, or to the project `description` field (which already contains a similar description: `"The official Python library for the agentex API"`).

How can I resolve this? If you propose a fix, please make it concise.