# ObservationType
## Enum Variants
| Name | Value |
|---- | -----|
| Span | SPAN |
| Generation | GENERATION |
| Event | EVENT |
| Agent | AGENT |
| Tool | TOOL |
| Chain | CHAIN |
| Retriever | RETRIEVER |
| Evaluator | EVALUATOR |
| Embedding | EMBEDDING |
| Guardrail | GUARDRAIL |
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