Iii Observability

OpenTelemetry tracing and Prometheus metrics baked into the iii worker framework. Every function invocation gets traced automatically, traces propagate via W3C context, and the engine exports everything over OTLP to your collector of choice. You can add custom spans and metrics when the defaults aren't enough, but most workers won't need them. The Prometheus endpoint lives on port 9464 if you prefer scraping. This is infrastructure observability for a specific runtime, not a general purpose monitoring tool. If you're running iii workers and need visibility into what they're doing, this handles the plumbing so you don't wire up tracing yourself.

skills.sh installs: 195
GitHub stars: 18.9K
last updated: Aug 21, 2026

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Install

$ npx -y skills add iii-hq/iii --skill iii-observability --agent claude-code

Installs into .claude/skills of the current project.

Files

iii-observability

The iii-observability worker provides OpenTelemetry-backed observability for the iii engine: distributed tracing, structured logs, metrics with rollups, alert rules, sampling configuration, and baggage propagation. Every surface is a callable engine::* function, plus two engine-hosted sources: observability::on-log, called once per ingested log record, and observability::on-span, called once per coalesced window of span activity. Functions span nine sub-namespaces — emit, query stored telemetry, inspect configuration, and propagate context.

SKILL.md on GitHub

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