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The Go SDK and docs are currently in beta. Report issues on GitHub.

Fields

FieldTypeRequiredDescriptionExample
CacheControl*components.AnthropicCacheControlDirective:heavy_minus_sign:Enable automatic prompt caching. When set at the top level, the system automatically applies cache breakpoints to the last cacheable block in the request. Currently supported for Anthropic Claude models.{"type": "ephemeral"}
Description*string:heavy_minus_sign:N/A
InputSchemacomponents.InputSchema:heavy_check_mark:N/A
Namestring:heavy_check_mark:N/A
Type*components.ToolTypeCustom:heavy_minus_sign:N/A