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> For a complete documentation index, see https://docs.nvidia.com/nemo/relay/dev/reference/api/rust-library-reference/nemo-relay-worker-proto/conversions/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.nvidia.com/nemo/relay/_mcp/server.

# Module conversions

> Typed domain conversions for the namespaced worker contract. Typed conversions between shared domain values and protobuf values.

Generated from `cargo doc --no-deps -p nemo-relay-builtins -p nemo-relay-diagnostics -p nemo-relay-logging -p nemo-relay-plugin-host -p nemo-relay-codecs -p nemo-relay -p nemo-relay-runtime -p nemo-relay-model-pricing -p nemo-relay-resource-metrics -p nemo-relay-observability -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`.

Typed domain conversions for the namespaced worker contract. Typed conversions between shared domain values and protobuf values.

The host and Rust worker use the same [`WireValue`](/reference/api/rust-library-reference/nemo-relay-worker-proto/conversions/trait-wirevalue) implementations so native and worker callbacks retain the types from `nemo_relay_types`. Generated protobuf types describe transport presence and alternatives separately.

`dto.rs` declares struct fields, enum mappings, and collection wrappers. Matching field names use `field: mode`; renames use `source => target: mode`. Both directions construct every struct field, making omitted mappings a compile-time error. `variants.rs` handles enums and structural differences explicitly. Shared helpers here check required values, integer widths, timestamps, and JSON syntax while preserving native null semantics.

See the crate's `CONTRACT.md`, "Rust domain conversions", for field modes, representation differences, and the maintenance workflow.

## Structs

* [ConversionError](/reference/api/rust-library-reference/nemo-relay-worker-proto/conversions/struct-conversionerror): A malformed or unsupported value at the worker protocol boundary.

## Traits

* [WireValue](/reference/api/rust-library-reference/nemo-relay-worker-proto/conversions/trait-wirevalue): Bidirectional conversion without exposing transport representation to callbacks.

## Functions

* [decode](/reference/api/rust-library-reference/nemo-relay-worker-proto/conversions/fn-decode): Decode a protobuf value into its shared domain representation.
* [encode](/reference/api/rust-library-reference/nemo-relay-worker-proto/conversions/fn-encode): Encode a domain value into its protobuf representation.

## Type Aliases

* [Result](/reference/api/rust-library-reference/nemo-relay-worker-proto/conversions/type-result): Result of a domain/protobuf conversion.

> Typed domain conversions for the namespaced worker contract. Typed conversions between shared domain values and protobuf values.

## Docs

- [Struct Conversion Error](https://docs.nvidia.com/nemo/relay/dev/reference/api/rust-library-reference/nemo-relay-worker-proto/conversions/struct-conversionerror.md): A malformed or unsupported value at the worker protocol boundary.
- [Trait Wire Value](https://docs.nvidia.com/nemo/relay/dev/reference/api/rust-library-reference/nemo-relay-worker-proto/conversions/trait-wirevalue.md): Bidirectional conversion without exposing transport representation to callbacks.
- [Function decode](https://docs.nvidia.com/nemo/relay/dev/reference/api/rust-library-reference/nemo-relay-worker-proto/conversions/fn-decode.md): Decode a protobuf value into its shared domain representation.
- [Function encode](https://docs.nvidia.com/nemo/relay/dev/reference/api/rust-library-reference/nemo-relay-worker-proto/conversions/fn-encode.md): Encode a domain value into its protobuf representation.
- [Type Alias Result](https://docs.nvidia.com/nemo/relay/dev/reference/api/rust-library-reference/nemo-relay-worker-proto/conversions/type-result.md): Result of a domain/protobuf conversion.