# client_signals v0.4.3 - Table of Contents

> Privacy-safe client signals for CLI HTTP traffic.

## Modules

- [ClientSignals](ClientSignals.md): Privacy-safe client signals for CLI HTTP traffic.

- [ClientSignals.Plug](ClientSignals.Plug.md): Reads the coarse, self-reported `Fly-Client-*` headers (as produced by
`ClientSignals.headers_for/2`) off an incoming request and attaches
them to the current request's OTel span as `fly.client.*` attributes.
- [ClientSignals.PromExPlugin](ClientSignals.PromExPlugin.md): PromEx plugin for the canonical client-signals request counter.

- [ClientSignals.Request](ClientSignals.Request.md): Bounded server-side classification and route helpers for incoming
client-signal headers.
- [ClientSignals.RequestMetrics](ClientSignals.RequestMetrics.md): Emits the canonical telemetry event for requests classified using client signals.

