> ## Documentation Index > Fetch the complete documentation index at: https://openrouter-d02e98a0-mintlify-a46887cf.mintlify.site/llms.txt > Use this file to discover all available pages before exploring further. # Guardrail - Go SDK > Guardrail type definition The Go SDK and docs are currently in beta. Report issues on [GitHub](https://github.com/OpenRouterTeam/go-sdk/issues). ## Fields | Field | Type | Required | Description | Example | | ----------------------- | --------------------------------------------------------------------------------------------------------------------------------------------- | -------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------- | | `AllowedModels` | optionalnullable.OptionalNullable\[\[]`string`] | :heavy\_minus\_sign: | Array of model canonical\_slugs (immutable identifiers) | \[
"openai/gpt-5.2-20251211",
"anthropic/claude-4.5-opus-20251124",
"deepseek/deepseek-r1-0528:free"
] | | `AllowedProviders` | optionalnullable.OptionalNullable\[\[]`string`] | :heavy\_minus\_sign: | List of allowed provider IDs | \[
"openai",
"anthropic",
"google"
] | | `ContentFilterBuiltins` | optionalnullable.OptionalNullable\[\[][components.ContentFilterBuiltinEntry](/client-sdks/go/api-reference/models/contentfilterbuiltinentry)] | :heavy\_minus\_sign: | Builtin content filters applied to requests. Includes PII detectors and the regex-based prompt injection detector. | \[
`{"action": "redact","label": "[EMAIL]","slug": "email"}`
] | | `ContentFilters` | optionalnullable.OptionalNullable\[\[][components.ContentFilterEntry](/client-sdks/go/api-reference/models/contentfilterentry)] | :heavy\_minus\_sign: | Custom regex content filters applied to request messages | \[
`{"action": "redact","label": "[API_KEY]","pattern": "\\b(sk-[a-zA-Z0-9]{48}`)\b"
}
] | | `CreatedAt` | `string` | :heavy\_check\_mark: | ISO 8601 timestamp of when the guardrail was created | 2025-08-24T10:30:00Z | | `Description` | optionalnullable.OptionalNullable\[`string`] | :heavy\_minus\_sign: | Description of the guardrail | Guardrail for production environment | | ~~`EnforceZdr`~~ | optionalnullable.OptionalNullable\[`bool`] | :heavy\_minus\_sign: | : warning: \*\* DEPRECATED \*\*: This will be removed in a future release, please migrate away from it as soon as possible.

Deprecated. Use enforce\_zdr\_anthropic, enforce\_zdr\_openai, enforce\_zdr\_google, and enforce\_zdr\_other instead. When provided, its value is copied into any of those per-provider fields that are not explicitly specified on the request. | false | | `EnforceZdrAnthropic` | optionalnullable.OptionalNullable\[`bool`] | :heavy\_minus\_sign: | Whether to enforce zero data retention for Anthropic models. Falls back to enforce\_zdr when not provided. | false | | `EnforceZdrGoogle` | optionalnullable.OptionalNullable\[`bool`] | :heavy\_minus\_sign: | Whether to enforce zero data retention for Google models. Falls back to enforce\_zdr when not provided. | false | | `EnforceZdrOpenai` | optionalnullable.OptionalNullable\[`bool`] | :heavy\_minus\_sign: | Whether to enforce zero data retention for OpenAI models. Falls back to enforce\_zdr when not provided. | false | | `EnforceZdrOther` | optionalnullable.OptionalNullable\[`bool`] | :heavy\_minus\_sign: | Whether to enforce zero data retention for models that are not from Anthropic, OpenAI, or Google. Falls back to enforce\_zdr when not provided. | false | | `ID` | `string` | :heavy\_check\_mark: | Unique identifier for the guardrail | 550e8400-e29b-41d4-a716-446655440000 | | `IgnoredModels` | optionalnullable.OptionalNullable\[\[]`string`] | :heavy\_minus\_sign: | Array of model canonical\_slugs to exclude from routing | \[
"openai/gpt-4o-mini-2024-07-18"
] | | `IgnoredProviders` | optionalnullable.OptionalNullable\[\[]`string`] | :heavy\_minus\_sign: | List of provider IDs to exclude from routing | \[
"azure"
] | | `LimitUsd` | optionalnullable.OptionalNullable\[`float64`] | :heavy\_minus\_sign: | Spending limit in USD | 100 | | `Name` | `string` | :heavy\_check\_mark: | Name of the guardrail | Production Guardrail | | `ResetInterval` | optionalnullable.OptionalNullable\[[components.GuardrailInterval](/client-sdks/go/api-reference/models/guardrailinterval)] | :heavy\_minus\_sign: | Interval at which the limit resets (daily, weekly, monthly) | monthly | | `UpdatedAt` | optionalnullable.OptionalNullable\[`string`] | :heavy\_minus\_sign: | ISO 8601 timestamp of when the guardrail was last updated | 2025-08-24T15:45:00Z | | `WorkspaceID` | `string` | :heavy\_check\_mark: | The workspace ID this guardrail belongs to. | 0df9e665-d932-5740-b2c7-b52af166bc11 |