Maintain Observability

Maintain Observability Surfaces

Use this skill when changing event fields, exporter behavior, subscriber config, or binding parity for ATIF or the full, gen_ai, and openinference OpenTelemetry projections.

Surfaces To Keep In Sync

• Core event model and emitted fields
• crates/core/src/observability/atif.rs
• crates/core/src/observability/otel.rs
• crates/core/src/observability/openinference.rs
• FFI and binding-native wrappers where the config or lifecycle is exposed
• Python, Go, and Node.js config objects and subscriber/exporter methods
• Observability config version 3, where one opentelemetry section contains typed endpoints and OpenInference has no standalone public surface
• Docs under docs/about-nemo-relay/concepts/subscribers.mdx and docs/configure-plugins/observability/

Design Checklist

• Is this an event-model change, exporter-config change, or lifecycle change?
• Do all bindings expose the same logical knobs and semantics?
• Does every OpenTelemetry endpoint require a type and nonblank destination?
• Does each endpoint resolve header_env values at activation and reject missing, blank, or duplicate headers?
• Do layered ATOF sink, ATIF storage, and OpenTelemetry endpoint lists concatenate with higher-precedence entries first?
• Are OpenTelemetry and OpenInference dependencies unconditional rather than Cargo feature-gated?
• Does gen_ai avoid nemo_relay.*, project sanitized LLM instructions and messages into the standard content attributes, and emit minimal spans for scopes without GenAI semantics so their parentage is preserved?
• Does enable_full_payloads preserve complete sanitized LLM request input and annotations while leaving credential removal and sanitizers active?
• Does Relay derive compliant trace and span IDs consistently across typed OpenTelemetry endpoints while preserving lifecycle parentage?
• Are mark events, start/end events, and orphan cases still handled correctly?
• Does a sanitized tool result annotation remain opaque under category_profile.tool_result_annotation, ATIF observation-result extra.tool_result_annotation, and the single nemo_relay.tool.result.annotation attribute in full and openinference, while gen_ai omits it?
• Do examples and docs use each exporter's documented flush/deregister order before shutdown?
• Are span or trajectory fields still derived from the intended event data?

Validation

• Run the affected Rust crate tests plus just test-rust if event fields changed.
• Run only the binding suites whose exposed configuration, lifecycle, event, or exporter contract changed.
• Update and validate docs or examples when the public workflow, documented observability contract, or emitted output changed.

References

• docs/about-nemo-relay/concepts/subscribers.mdx
• docs/configure-plugins/observability/about.mdx
• docs/configure-plugins/observability/opentelemetry.mdx
• crates/core/src/observability/atif.rs
• crates/core/src/observability/otel.rs
• crates/core/src/observability/openinference.rs