Pricing
00
In productionProbeginnerHallucination

The AI called an rclpy method that doesn't exist

Replace the invented API call with the real Jazzy one.

Pairs with Grounding AI in the real ROS 2 docs in Use AI efficiently with ROS 2. Read the concept first, then diagnose it here.

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Operator report

AttributeError: 'Publisher' object has no attribute 'set_qos_override'.

Ubuntu 24.04, ROS 2 Jazzy, rclpy/rclcpp, an LLM coding assistant + MCP

01

System boundary

Trace only the relevant path.

3 nodes
  1. 01LLM code→
  2. 02real rclpy API→
  3. 03runtimeOUT
02

How this lab works

You diagnose it. No command list.

Open the repair workspace and gather your own evidence in a real terminal. No diagnostic commands are handed to you - finding the fault is the exercise. Stuck? Progressive hints unlock inside the workspace.

03

Verification

Pass more than the visible symptom.

4 checks
  • Real API used
  • Node runs
  • Hidden regression behavior
  • Root cause explanation