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name: rosa description: "Route ROSA LangChain agent construction, ROS 1 and ROS 2 operations, custom tool integration, and safe troubleshooting for jpl-rosa." disable-model-invocation: true metadata: disco-role: operating license: Apache 2.0

ROSA repository skill

Use this skill when a task names ROSA, jpl-rosa, from rosa import ROSA, LangChain tool-calling agents for ROS, ros_version, ROSA tools, or the ROSA TurtleSim-style agent pattern. It is a self-contained operating guide for the public package; it does not require the original repository checkout.

Route the request

• Construct, configure, invoke, stream, or debug the agent: read agent-core.
• ROS 1 / Noetic graph, topics, nodes, services, parameters, packages, logs, launch, or kill: read ros1-operations.
• ROS 2 / Humble, Iron, or Jazzy CLI-backed graph, topics, services, parameters, doctor, or logs: read ros2-operations.
• Custom LangChain tools or packages, blacklists, robot prompts, math, logging, or safe adaptation: read tool-customization.

Start with the route matching the user's primary action, then follow its cross-links instead of loading every reference. Read runtime prerequisites and troubleshooting when environment boundaries or failures are involved. The spaces in the first link are intentional Markdown-label syntax; the target remains inside this skill tree.

Package boundary and minimal check

The public distribution is jpl-rosa and the import package is rosa. Install it in Python >=3.9,<4:

python -m pip install jpl-rosa
python -c "from rosa import ROSA, RobotSystemPrompts, ChatModel; print('rosa import ok')"

The base package includes LangChain OpenAI integration. Install only the provider extra needed by the selected workflow, for example jpl-rosa[anthropic] or jpl-rosa[ollama]. Package installation does not install ROS 1/ROS 2 middleware, a ROS master/daemon, a DDS graph, an LLM service, credentials, Docker, or a display server. Use the safe environment checker before constructing a live agent; it never contacts a model or ROS system unless an explicit ROS check is requested.

Safe operating rules

1. Select ros_version=1 or 2 from the user's actual middleware; never mix the ROS 1 and ROS 2 tool catalogs.
2. For action requests, discover current nodes and topics first, then inspect the exact service/topic/parameter/package before acting.
3. Execute one tool call at a time. Do not batch movement, drawing, service, launch, kill, or parameter operations.
4. Treat service calls, parameter writes, launches, and node kills as mutations; state the target and expected effect before execution.
5. Use the package's calculation tools for angles, distances, coordinates, and geometry rather than doing robotics arithmetic manually.
6. Keep API keys and private robot details out of prompts, logs, source files, and generated reports.

Provenance and limits

Read repo-provenance.md before deciding whether this skill matches a changed ROSA checkout. Read the shared troubleshooting reference for install/import, provider, middleware, input-validation, and demo limitations. ROSA's Docker/X11 TurtleSim demo is intentionally documented as a bounded optional integration; this skill does not launch it automatically.