ROS2 Skill Index

This skill is a navigation aid. The repo's ROS2 coverage is split across nine focused skills, each triggered by its specific topic. Open the one that matches your task.

Pick by Task

Task	Skill
Create a node, structure a node, separate logic from ROS, scaffold pkg	ros2-node-creation
Choose QoS, define a custom message, debug "topic doesn't connect"	ros2-messaging
Service vs. action, write a server/client, structured error codes	ros2-service-action
Bring up a system, externalize parameters to YAML, composable nodes	ros2-launch-config
Managed startup, configure → activate → deactivate, supervisor patterns	ros2-lifecycle
TF2 broadcasters, listeners, frame trees, lookup-at-timestamp	ros2-transforms
Health monitoring, /diagnostics, frequency monitors, logging rules	ros2-diagnostics
pytest/gtest for rclpy/rclcpp, integration & launch_testing	ros2-testing
rosbag2 recording/playback, MCAP vs SQLite3, programmatic capture	ros2-bag
Layered architecture for codebases >1 node, domain-port-adapter	ros2-clean-architecture

Pick by Symptom

Symptom	Likely skill
"Publisher and subscriber both exist but no data arrives"	ros2-messaging (QoS mismatch)
"Service call hangs forever from inside a callback"	ros2-node-creation (executor)
"Action goal accepted but never executes"	ros2-service-action
"TF lookup fails / extrapolation into the future"	ros2-transforms
"Test passes locally, fails in CI"	ros2-testing (sleep / QoS)
"Node started but is silently doing nothing"	ros2-lifecycle (unconfigured)
"Tuning a parameter requires a rebuild"	ros2-launch-config (YAML)
"Camera dropped frames and we noticed minutes later"	ros2-diagnostics (frequency)
"Replay timing is off / TF says ExtrapolationException"	ros2-bag (use_sim_time)
"Node is 1000 lines mixing CV, math, and rclpy"	ros2-clean-architecture

Adjacent Skills (Outside the ROS2 Family)

• ros1 — Catkin / rospy / roscpp / nodelets, and migration to ROS2.
• ros2-web-integration — rosbridge, REST/WebSocket bridges, MJPEG/WebRTC.
• robot-bringup — systemd, udev, watchdogs, boot ordering above the launch layer.
• docker-ros2-development — multi-stage Dockerfiles, GPU passthrough, devcontainers.
• robotics-testing — broader testing strategy (hardware mocks, simulation, CI).
• robotics-security — SROS2, DDS encryption, secrets, e-stop isolation.
• robotics-design-patterns, robotics-software-principles, robot-perception — domain-level patterns.