Use case	What to do
Pick attributes for a new HTTP / DB / RPC / messaging span	apm-service-catalog.md — what each Coralogix APM feature reads; for stable/current/new HTTP metrics use `http.request.method`
Diagnose a missing operation in APM Service Catalog	apm-service-catalog.md — service.name + span kind + operation-name attribute checklist
Diagnose a missing database in Database Monitoring	database-monitoring.md — target span attributes are `db.system`, `db.name`, `db.operation`, `db.statement`, `net.peer.name`; newer names are bridge inputs
Handle new DB semantic-convention names such as `db.system.name` / `db.query.text`	database-monitoring.md and spanmetrics.md — DB bridge: `db.name` first, then `server.address`, `network.peer.name`, `net.peer.name`, `network.peer.address`, final `db.system`; include `db_calls_total` vs `calls_total` / `db_namespace` symptoms
Diagnose recurring cross-product gotchas	high-signal-rules.md — common scope, topology, cardinality, and product-path rules
Answer a specific "which fields / exact names" question	Always read final-answer-checklists.md first — short-answer anchors that must not be inferred or paraphrased away
Triage a new OTel semantic-convention breaking change after an SDK / Collector upgrade	triage-workflow.md — classify attribute-name, attribute-value, metric data-point, scope, or topology changes before choosing a bridge
Configure Span Metrics labels or cardinality	spanmetrics.md — minimum labels include `span_name`, `service_name`, `span_kind`, `status_code`, `collector_instance_id`, `http_method`, `host_name`, `k8s_cluster_name`, `cgx.transaction`, `cgx.transaction.root`, `db_namespace`, `db_operation_name`, `db_collection_name`, `db_system`, `application_name`, `cx_subsystem_name`; use `k8s.pod.name` only for collision cases, not blanket defaults
Diagnose Span Metrics writer identity or topology	spanmetrics.md and associated-boundaries.md — restore `service.instance.id` for resource-key collisions; for gateways name traceID / trace ID load balancing
Diagnose `otel.metric.overflow="true"` / `otel_metric_overflow="true"` series	spanmetrics.md — expected overflow fallback, not a bug; raw OTLP vs PromQL labels; reduce source cardinality; qualify `aggregation_cardinality_limit: 0` vs Helm v0.0.203+ 100,000 default
Diagnose missing pods / hosts in Infrastructure Explorer	infrastructure-explorer.md — resource-scope `k8s.cluster.name`, `k8s.namespace.name`, `k8s.pod.name`, `k8s.node.name`, `k8s.container.name`, `service.name`, plus owner `k8s.deployment.name` / `k8s.statefulset.name` / `k8s.daemonset.name` / `k8s.job.name` / `k8s.cronjob.name` / `k8s.replicaset.name`; EC2 tag target is `host.name`
Diagnose resource metadata lifetime / Resource Catalog inventory issues	infrastructure-explorer.md — `resource_ttl`, `interval`, `otel.entity.interval`, `schema_url`, `coralogix/resource_catalog`, `x-coralogix-ingress: metadata-as-otlp-logs/v1`
AI Center: missing LLM rows, `gen_ai.*` attributes, prompts, cost	Not this skill — hand off to `ai-app-instrumentation`, which owns GenAI span shape, detection, and AI Center verification
Diagnose custom metric temporality, duplicate labels, or `_1_total` names	custom-metrics.md — `delta` temporality, writer identity, Prometheus normalization, and low-cardinality labels
Diagnose Lambda/log metadata scope or EC2 tag enrichment	logs-serverless.md — log-record vs resource scope, `cx_metadata.*`, dashboard/correlation warning, and host identity enrichment
Decide when semconv should hand off to another skill	associated-boundaries.md — `core` owns `cx.application.name` / `cx.subsystem.name`; Javaagent setup including `OTEL_RESOURCE_ATTRIBUTES` and JMX receiver belongs to instrumentation; exact `set(...)` / where / context belongs to `opentelemetry-ottl`
Decide whether an attribute belongs on resource, span, or metric	Attribute placement below

Attribute placement

Scope mismatches are a common reason Coralogix features stay empty while telemetry is flowing.

Level	Use for	Examples
Resource	producer identity / environment	`service.name`, `service.instance.id`, `deployment.environment.name`, `host.name`, `k8s.pod.name`, `cloud.region`
Span	per-operation context	`http.route`, `db.system`, `db.operation`, `db.statement`, `net.peer.name`, `rpc.method`
Metric data point	bounded dimensions	`http.request.method`, `http.response.status_code`, `db.system`, generated labels such as `span_kind`
Log record	per-log-event fields	parsed body fields, filelog parser output, request IDs
Span event	point-in-time span details	`exception.type`, `exception.message`, `exception.stacktrace`

Exporter application_name_attributes and subsystem_name_attributes read resource attributes only; for exact routing answers read final-answer-checklists.md.

Common Triage Flow

Use this flow when a Coralogix surface is empty or changed after an OTel SDK / instrumentation / Collector upgrade.

Identify the changed OTel version, instrumentation source, and schema_url when present.
Identify the affected Coralogix surface and load the matching reference above.
Inspect raw telemetry before and after transforms with the collector debug exporter.
Classify the break as one of:
- attribute-name rename;
- attribute-value / enum rename;
- generated metric label or data-point change;
- resource/span/metric/log-record scope mismatch;
- collection topology or product-path gap.
Choose the bridge location conceptually:
- span attributes before APM / DB / Span Metrics consume spans;
- generated RED metric labels after spanmetrics;
- resource attributes before export / Resource Catalog correlation;
- log/resource metadata before exporter routing or serverless metadata processing.
Hand exact implementation to the owning skill: opentelemetry-ottl for transform syntax, opentelemetry-collector for pipeline/Helm/Fleet wiring, opentelemetry-instrumentation for SDK and sampler setup, core for Coralogix app/subsystem routing, and ai-app-instrumentation for AI Center / GenAI spans.

Minimal evidence-only collector config for step 3:

receivers:
  otlp:
    protocols:
      grpc: {}
      http: {}
exporters:
  debug:
    verbosity: detailed
service:
  pipelines:
    traces:
      receivers: [otlp]
      exporters: [debug]
    metrics:
      receivers: [otlp]
      exporters: [debug]
    logs:
      receivers: [otlp]
      exporters: [debug]

Use this only to inspect raw scopes and attribute names; production pipeline wiring still belongs to opentelemetry-collector.

For worked diagnosis examples, read triage-workflow.md.

Limitations

This skill diagnoses telemetry semantics. Hand off implementation details:

core: cx.application.name, cx.subsystem.name, regional domains, and application/subsystem routing order.
opentelemetry-instrumentation: SDK env vars, sampler chains, CoralogixTransactionSampler, and manual span code.
ai-app-instrumentation: AI Center and GenAI — gen_ai.* span shape, detection, GenAI proxy/library setup, and verification in AI Center.
opentelemetry-ottl: exact set(...), replace_pattern(...), contexts, and where clauses.
opentelemetry-collector: collector pipeline wiring, Helm/Fleet values, rendered ConfigMaps, exporter queues, Resource Catalog paths, and profile pipeline setup.
Product workflows: dashboard queries, SLOs, alerts, synthetics, RUM, and product-specific rule repair unless the root cause is one of the telemetry attribute shapes documented here.

Attribute placement

Common Triage Flow

Limitations

Upstream References

opentelemetry-semantic-conventions

OpenTelemetry Semantic Conventions for Coralogix

Reference Map and Scope