> This page is for NeMo Relay, version v0.8.4.
> For other versions, use one of these documentation indexes:
> - Latest (v0.10.0) (default): https://docs.nvidia.com/nemo/relay/latest/llms.txt
> - dev: https://docs.nvidia.com/nemo/relay/dev/llms.txt
> - v0.10.0: https://docs.nvidia.com/nemo/relay/v0.10.0/llms.txt
> - v0.9.4: https://docs.nvidia.com/nemo/relay/v0.9.4/llms.txt
> - v0.8.4: https://docs.nvidia.com/nemo/relay/v0.8.4/llms.txt
> - v0.7.3: https://docs.nvidia.com/nemo/relay/v0.7.3/llms.txt
> - v0.6.0: https://docs.nvidia.com/nemo/relay/v0.6.0/llms.txt
> - v0.5.0: https://docs.nvidia.com/nemo/relay/v0.5.0/llms.txt

> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.nvidia.com/nemo/relay/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.nvidia.com/nemo/relay/_mcp/server.

# Struct Request Rails Config

> Request-time rail selection for Guardrails generation.

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`.

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Request-time rail selection for Guardrails generation.

These are backend request options, not top-level NeMo Relay interception surfaces.

## Fields

### `input: Option<RailSelector>`

Input rails selection.

### `output: Option<RailSelector>`

Output rails selection.

### `retrieval: Option<RailSelector>`

Retrieval rails selection.

### `dialog: Option<bool>`

Dialog rails selection.

### `tool_output: Option<RailSelector>`

Tool-output rails selection.

### `tool_input: Option<RailSelector>`

Tool-input rails selection.

## Trait Implementations

### `impl Clone for RequestRailsConfig`

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#### `clone`

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#### `clone_from`

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### `impl Debug for RequestRailsConfig`

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#### `fmt`

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### `impl Default for RequestRailsConfig`

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#### `default`

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### `impl<'de> Deserialize<'de> for RequestRailsConfig`

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#### `deserialize`

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### `impl EditorConfig for RequestRailsConfig`

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#### `editor_schema`

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### `impl Serialize for RequestRailsConfig`

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#### `serialize`

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