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# Module diagnostics

> Negotiated, bounded plugin diagnostic submission and delivery controls. Bounded diagnostic delivery, independent of execution and operational logs. Counters, history, and recording permission remain owned by the Relay host.

Generated from `cargo doc --no-deps -p nemo-relay -p nemo-relay-adaptive -p nemo-relay-pii-redaction -p nemo-relay-ffi -p nemo-relay-types -p nemo-relay-plugin -p nemo-relay-worker-proto -p nemo-relay-worker`.

Negotiated, bounded plugin diagnostic submission and delivery controls. Bounded diagnostic delivery, independent of execution and operational logs. Counters, history, and recording permission remain owned by the Relay host.

## Structs

* [DiagnosticCodeDefinition](/reference/api/rust-library-reference/nemo-relay-worker/diagnostics/struct-diagnosticcodedefinition)
* [DiagnosticComponent](/reference/api/rust-library-reference/nemo-relay-worker/diagnostics/struct-diagnosticcomponent): Component-scoped authoring handle; code IDs are one-based registration positions.
* [DiagnosticDeliveryStats](/reference/api/rust-library-reference/nemo-relay-worker/diagnostics/struct-diagnosticdeliverystats): SDK-local saturating delivery totals; never replayed as host observations.
* [DiagnosticExtensionDefinition](/reference/api/rust-library-reference/nemo-relay-worker/diagnostics/struct-diagnosticextensiondefinition)
* [DiagnosticObservation](/reference/api/rust-library-reference/nemo-relay-worker/diagnostics/struct-diagnosticobservation)
* [DiagnosticReceipt](/reference/api/rust-library-reference/nemo-relay-worker/diagnostics/struct-diagnosticreceipt)
* [WorkerDiagnostics](/reference/api/rust-library-reference/nemo-relay-worker/diagnostics/struct-workerdiagnostics): One negotiated facade per activation. Disabled/unsupported facades are inert.

## Enums

* [DiagnosticDeliveryError](/reference/api/rust-library-reference/nemo-relay-worker/diagnostics/enum-diagnosticdeliveryerror): Delivery outcome, independent of plugin execution or health.
* [DiagnosticEvidenceRetention](/reference/api/rust-library-reference/nemo-relay-worker/diagnostics/enum-diagnosticevidenceretention)
* [DiagnosticObservationOutcome](/reference/api/rust-library-reference/nemo-relay-worker/diagnostics/enum-diagnosticobservationoutcome)
* [DiagnosticObservationSeverity](/reference/api/rust-library-reference/nemo-relay-worker/diagnostics/enum-diagnosticobservationseverity)
* [DiagnosticReceiptStatus](/reference/api/rust-library-reference/nemo-relay-worker/diagnostics/enum-diagnosticreceiptstatus)

## Functions

* [builtin_code](/reference/api/rust-library-reference/nemo-relay-worker/diagnostics/fn-builtin-code): Select a typed catalogue code without copying its spelling into plugin code.
* [extension_code](/reference/api/rust-library-reference/nemo-relay-worker/diagnostics/fn-extension-code): Define a bounded internal operation in the host-assigned session namespace.

> Negotiated, bounded plugin diagnostic submission and delivery controls. Bounded diagnostic delivery, independent of execution and operational logs. Counters, history, and recording permission remain owned by the Relay host.

## Docs

- [Struct Diagnostic Code Definition](https://docs.nvidia.com/nemo/relay/dev/reference/api/rust-library-reference/nemo-relay-worker/diagnostics/struct-diagnosticcodedefinition.md): API documentation for the Rust `DiagnosticCodeDefinition` struct in crate `nemo_relay_worker`.
- [Struct Diagnostic Component](https://docs.nvidia.com/nemo/relay/dev/reference/api/rust-library-reference/nemo-relay-worker/diagnostics/struct-diagnosticcomponent.md): Component-scoped authoring handle; code IDs are one-based registration positions.
- [Struct Diagnostic Delivery Stats](https://docs.nvidia.com/nemo/relay/dev/reference/api/rust-library-reference/nemo-relay-worker/diagnostics/struct-diagnosticdeliverystats.md): SDK-local saturating delivery totals; never replayed as host observations.
- [Struct Diagnostic Extension Definition](https://docs.nvidia.com/nemo/relay/dev/reference/api/rust-library-reference/nemo-relay-worker/diagnostics/struct-diagnosticextensiondefinition.md): API documentation for the Rust `DiagnosticExtensionDefinition` struct in crate `nemo_relay_worker`.
- [Struct Diagnostic Observation](https://docs.nvidia.com/nemo/relay/dev/reference/api/rust-library-reference/nemo-relay-worker/diagnostics/struct-diagnosticobservation.md): API documentation for the Rust `DiagnosticObservation` struct in crate `nemo_relay_worker`.
- [Struct Diagnostic Receipt](https://docs.nvidia.com/nemo/relay/dev/reference/api/rust-library-reference/nemo-relay-worker/diagnostics/struct-diagnosticreceipt.md): API documentation for the Rust `DiagnosticReceipt` struct in crate `nemo_relay_worker`.
- [Struct Worker Diagnostics](https://docs.nvidia.com/nemo/relay/dev/reference/api/rust-library-reference/nemo-relay-worker/diagnostics/struct-workerdiagnostics.md): One negotiated facade per activation. Disabled/unsupported facades are inert.
- [Enum Diagnostic Delivery Error](https://docs.nvidia.com/nemo/relay/dev/reference/api/rust-library-reference/nemo-relay-worker/diagnostics/enum-diagnosticdeliveryerror.md): Delivery outcome, independent of plugin execution or health.
- [Enum Diagnostic Evidence Retention](https://docs.nvidia.com/nemo/relay/dev/reference/api/rust-library-reference/nemo-relay-worker/diagnostics/enum-diagnosticevidenceretention.md): API documentation for the Rust `DiagnosticEvidenceRetention` enum in crate `nemo_relay_worker`.
- [Enum Diagnostic Observation Outcome](https://docs.nvidia.com/nemo/relay/dev/reference/api/rust-library-reference/nemo-relay-worker/diagnostics/enum-diagnosticobservationoutcome.md): API documentation for the Rust `DiagnosticObservationOutcome` enum in crate `nemo_relay_worker`.
- [Enum Diagnostic Observation Severity](https://docs.nvidia.com/nemo/relay/dev/reference/api/rust-library-reference/nemo-relay-worker/diagnostics/enum-diagnosticobservationseverity.md): API documentation for the Rust `DiagnosticObservationSeverity` enum in crate `nemo_relay_worker`.
- [Enum Diagnostic Receipt Status](https://docs.nvidia.com/nemo/relay/dev/reference/api/rust-library-reference/nemo-relay-worker/diagnostics/enum-diagnosticreceiptstatus.md): API documentation for the Rust `DiagnosticReceiptStatus` enum in crate `nemo_relay_worker`.
- [Function builtin_code](https://docs.nvidia.com/nemo/relay/dev/reference/api/rust-library-reference/nemo-relay-worker/diagnostics/fn-builtin-code.md): Select a typed catalogue code without copying its spelling into plugin code.
- [Function extension_code](https://docs.nvidia.com/nemo/relay/dev/reference/api/rust-library-reference/nemo-relay-worker/diagnostics/fn-extension-code.md): Define a bounded internal operation in the host-assigned session namespace.