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Patterns and best practices for integrating ROS2 systems with web technologies including REST APIs, WebSocket bridges, and browser-based robot interfaces.
Passed 20 of 23 test cases with the skill, and 15 of 23 without it.
and 3 more in the full report
5 fixed15 passed either way3 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 5 test cases the skill fixed. Same model, same prompt, with and without the skill.
I need to implement a REST endpoint in a FastAPI robot bridge that allows clients to update a declared ROS2 parameter value at runtime. How should parameter lookup, setting, and response handling be written?
| Checked | Without skill | With skill |
|---|---|---|
| Calls set_parameters with Parameter objects to update parameter values on the ROS2 node. | Passed | Passed |
| Handles missing or undeclared parameters by raising an HTTP 404 error response. | Missed | Passed |
The instructions your model reads when the skill loads.
| Feature | rosbridge_suite | Custom FastAPI Bridge | Custom Flask Bridge |
|---|---|---|---|
| Latency | ~5-15ms (WebSocket) | ~2-5ms (WebSocket), ~10-30ms (REST) | ~10-50ms (REST only without extensions) |
| Throughput | Medium (JSON serialization overhead) | High (binary WebSocket, async) | Low-Medium (sync, GIL-bound) |
| Auth | Basic (rosauth, limited) | Full (JWT, OAuth2, API keys) | Full (Flask-Login, JWT) |
| Complexity | Low (launch and connect) | Medium (must manage two event loops) | Medium (must manage threading) |
| Video Streaming | Requires separate web_video_server | Native (MJPEG, WebSocket binary) | MJPEG via generator responses |
| Production Ready | No (exposes full topic graph) | Yes | Yes (with gunicorn) |
| When to Use | Prototyping, foxglove, quick demos | Production APIs, high-perf streaming | Simple internal tools, legacy systems |
Use rosbridge_suite when:
Use a custom bridge (FastAPI/Flask) when:
test cases passed, vs 15 / 23 without
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