> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.nvidia.com/nemo/relay/dev/reference/api/rust-library-reference/nemo-relay/codec/identity/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 identity

> Stable LLM codec identities shared across SDK boundaries. Stable LLM codec identities shared across Relay runtime and SDK boundaries.

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`.

Stable LLM codec identities shared across SDK boundaries. Stable LLM codec identities shared across Relay runtime and SDK boundaries.

These types identify a codec selected by the Relay runtime. They do not provide codec implementations, provider detection, or runtime capabilities.

## Enums

* [BuiltinLlmCodec](/reference/api/rust-library-reference/nemo-relay/codec/identity/enum-builtinllmcodec): Relay's built-in LLM codec identities.
* [LlmCodecIdentity](/reference/api/rust-library-reference/nemo-relay/codec/identity/enum-llmcodecidentity): Per-call LLM codec identity supplied to sanitizer and SDK callbacks.

> Stable LLM codec identities shared across SDK boundaries. Stable LLM codec identities shared across Relay runtime and SDK boundaries.

## Docs

- [Enum Builtin LlmCodec](https://docs.nvidia.com/nemo/relay/dev/reference/api/rust-library-reference/nemo-relay/codec/identity/enum-builtinllmcodec.md): Relay's built-in LLM codec identities.
- [Enum LlmCodec Identity](https://docs.nvidia.com/nemo/relay/dev/reference/api/rust-library-reference/nemo-relay/codec/identity/enum-llmcodecidentity.md): Per-call LLM codec identity supplied to sanitizer and SDK callbacks.