Reference: Environment Variables

Variable	Purpose	Example
`BRIXO_OTLP_ENDPOINT`	OTEL traces endpoint	`https://collector.brixo.example/v1/traces`
`BRIXO_API_KEY`	Auth header for Brixo collector	`xyz123`
`SERVICE_NAME`	OTEL service.name resource	`my-agent`
`ENV`	deployment.environment	`dev` / `prod`
`OTEL_TRACES_SAMPLER`	Sampling policy	`always_on` (staging)
`TRACELOOP_TRACE_CONTENT`	Capture prompt/completion text	`true` (dev) / `false` (prod)`
`TRACELOOP_SAFE_MODE`	Aggressive redaction (if supported)	`true`

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