ObserveMetricsOptions
Properties
Section titled “Properties”custom?
Section titled “custom?”
optionalcustom?:CustomMetricMapping[]
Custom state-to-metric mappings for middleware-specific metrics.
meter?
Section titled “meter?”
optionalmeter?:Meter
Custom OTel Meter instance. Overrides global MeterProvider.
optionalotel?:boolean
Emit OTel GenAI standard metrics alongside agent_express_* metrics. Default: false.
output?
Section titled “output?”
optionaloutput?: (event) =>void
Custom output callback for standalone mode (when @opentelemetry/api is not installed).
Parameters
Section titled “Parameters”Returns
Section titled “Returns”void