metrics

var (
	// ToolCallsTotal counts tools/call dispatches by tool name and outcome.
	ToolCallsTotal *Counter
	// ToolCallDuration records dispatch duration in seconds.
	ToolCallDuration *Histogram
	// RateLimitRejections counts rate limiter rejections by kind.
	RateLimitRejections *Counter
	// Cancellations counts tools/call cancellations by reason
	// (client_requested, timeout, context_cancelled).
	Cancellations *Counter
	// HTTPRequestsTotal counts HTTP requests by path, method, and status.
	// Path is normalized at the call site to a bounded set (/mcp, /health,
	// /ready, /metrics, /other) to prevent cardinality blowup from probes.
	HTTPRequestsTotal *Counter
	// HTTPRequestDuration records HTTP request wall-clock duration.
	HTTPRequestDuration *Histogram
	// ReadyState is 1 when the server is ready, 0 otherwise.
	ReadyState *Gauge
	// BuildInfo exposes build metadata; value is always 1.
	BuildInfo *Gauge
	// InFlightToolCalls reports the dispatch-layer in-flight goroutine count.
	InFlightToolCalls *Gauge
	// UpstreamRequestsTotal counts outbound Clockify API requests by
	// endpoint (URL template), HTTP method, and status code bucket
	// (2xx/3xx/4xx/5xx/error).
	UpstreamRequestsTotal *Counter
	// UpstreamRequestDuration records Clockify API call latency.
	UpstreamRequestDuration *Histogram
	// UpstreamRetriesTotal counts retry attempts by endpoint and reason.
	UpstreamRetriesTotal *Counter
	// ProtocolErrorsTotal counts JSON-RPC protocol-level errors by code.
	ProtocolErrorsTotal *Counter
	// PanicsRecoveredTotal counts panics recovered from tool handlers and HTTP.
	PanicsRecoveredTotal *Counter
)

var Default = NewRegistry()

var DefaultBuckets = []float64{.005, .01, .025, .05, .1, .25, .5, 1, 2.5, 5, 10}

var HTTPDurationBuckets = []float64{0.005, 0.01, 0.025, 0.05, 0.1, 0.25, 0.5, 1, 2.5, 5, 10}

var ToolCallBuckets = []float64{0.05, 0.1, 0.25, 0.5, 1, 2, 3, 5, 10, 20, 45}

var UpstreamDurationBuckets = []float64{0.05, 0.1, 0.25, 0.5, 1, 2, 3, 5, 10, 20, 45}