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docs/build/snippets/python/code-samples/ls-metadata-parameters-basic-kt.mdx
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2026-07-29 10:28:19 +00:00

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```kotlin Kotlin
import com.langchain.smith.tracing.RunType
import com.langchain.smith.tracing.TraceConfig
import com.langchain.smith.tracing.traceable
val myCustomLlm =
traceable(
{ prompt: String -> callCustomApi(prompt) },
TraceConfig.builder()
.runType(RunType.LLM)
.metadata(
mapOf(
"ls_provider" to "my_provider",
"ls_model_name" to "my_custom_model",
),
)
.build(),
)
```