[SWE Destroyer] Add a hello world function to the README.md file

[danielmillerp]

Automated PR from SWE Destroyer agent.

Prompt: Add a hello world function to the README.md file

Greptile Summary

This PR adds a "Hello World" example section to the README.md to help new users get started with the Agentex Python SDK. The example defines a hello_world() function that initializes the client, lists tasks, and prints a greeting.

• Bug: The example uses tasks.data to access the task list, but client.tasks.list() returns a plain List[TaskListResponseItem], not a paginated response object. This will cause an AttributeError at runtime. Should use len(tasks) instead of len(tasks.data).
• The example largely duplicates the existing "Usage" section above it with minor additions (print statements and a function wrapper).

Confidence Score: 3/5

• Low-risk documentation change, but the code example contains a runtime error that would mislead users.
• The PR only modifies README.md so there's no risk to production code. However, the code example has a clear bug (accessing .data on a list) that would fail when users copy-paste it, undermining its purpose as a getting-started guide.
• README.md — the hello world code example needs to be corrected before merging.

Important Files Changed

Filename	Overview
README.md	Adds a "Hello World" section with a code example, but the example references tasks.data which does not exist on the list return type, causing a runtime error.

Sequence Diagram

sequenceDiagram
    participant User as User Script
    participant Client as Agentex Client
    participant API as Agentex REST API

    User->>Client: Initialize client
    User->>Client: client.tasks.list()
    Client->>API: GET /tasks
    API-->>Client: List of TaskListResponseItem
    Client-->>User: tasks (plain list)
    User->>User: print(len(tasks))

Loading

_{Last reviewed commit: d533fbf}

[greptile-apps]

_{1 file reviewed, 1 comment}

_{Edit Code Review Agent Settings | Greptile}

[greptile-apps]

tasks.data will raise AttributeError

client.tasks.list() returns a List[TaskListResponseItem] (a plain Python list), not an object with a .data attribute. Accessing tasks.data will raise AttributeError: 'list' object has no attribute 'data' at runtime.

This can be confirmed in src/agentex/types/task_list_response.py where the return type is defined as:

TaskListResponse: TypeAlias = List[TaskListResponseItem]

The same pattern applies to client.agents.list() and client.spans.list() — they all return plain lists.

Suggested change

	tasks = client.tasks.list()
	print("Hello, World! Connected to Agentex successfully.")
	print(f"Found {len(tasks.data)} tasks.")
	tasks = client.tasks.list()
	print("Hello, World! Connected to Agentex successfully.")
	print(f"Found {len(tasks)} tasks.")

Prompt To Fix With AI

This is a comment left during a code review.
Path: README.md
Line: 54-56

Comment:
**`tasks.data` will raise `AttributeError`**

`client.tasks.list()` returns a `List[TaskListResponseItem]` (a plain Python list), not an object with a `.data` attribute. Accessing `tasks.data` will raise `AttributeError: 'list' object has no attribute 'data'` at runtime.

This can be confirmed in `src/agentex/types/task_list_response.py` where the return type is defined as:
```python
TaskListResponse: TypeAlias = List[TaskListResponseItem]
```

The same pattern applies to `client.agents.list()` and `client.spans.list()` — they all return plain lists.

```suggestion
    tasks = client.tasks.list()
    print("Hello, World! Connected to Agentex successfully.")
    print(f"Found {len(tasks)} tasks.")
```

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