I released Wide Events, a Rails gem that records each request or job execution as one dense, high-cardinality telemetry event. It gives coding agents queryable production context without making them reconstruct what happened from scattered logs, spans, and metrics. Agents can retrieve only the relevant rows and fields for a route, account, build SHA, feature flag, or error, keeping the context compact.

The event is attached to the OpenTelemetry root span. If you do not use tracing, a log sink emits the same event as a single JSON line. I extracted the gem from a production Rails app where it currently exports to a self-hosted ClickStack setup, although any OTLP backend should work.

One request in that app performs a hybrid search and drafts a reply with an LLM. Its event includes the account, active feature flags, search-quality measurements, model, token usage, cost, and Postgres query count. Instead of collecting that context from several systems, an agent can query one row.

More example on how we use this on production here.

The gem also includes a generator that installs agent skills for adding instrumentation and querying the resulting events. Attributes are declared in a YAML registry that can be enforced in tests and CI, handled errors receive explicit slugs, and instrumentation never raises into application code.

Wide Events supports Ruby 3.2+ and Rails 7.1+ and is MIT licensed. I would especially appreciate feedback on the agent workflow, registry design, and attribute naming conventions.