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Signal is a built-in worker that scans an LLM project’s traces on a schedule, groups recurring failure patterns into issues, and writes an investigation for each one (overview, trace evidence, suggested fix).
Requires an LLM project with traces in Arize. See Set up tracing if needed.
No repo or extra skills are required to detect issues. To open fix PRs, clone the preset, add a GitHub skill, and attach a repo—see Agent Studio.

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Enable Signal

1

Open the LLM project

Signal only reads traces from the selected project.
2

Open the Signal tab

Select Signal in the project navigation.
3

Click Enable Signal

Arize creates a default automation using the Signal preset (recurring schedule, for example every 10 minutes). The tab stays linked to this automation until you disable Signal or delete it.

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Read issues

The Signal tab shows issue volume over time, a breakdown by entity when tagged, and a ranked issue list. Select an issue to read its investigation:
  • Overview — summary of the failure pattern
  • Evidence — trace IDs and filters
  • Proposed fix — suggested prompt, code, config, or eval change
Use View matching traces to open evidence in Explore your traces.