OpenAI spans
gen_ai.system,gen_ai.model,gen_ai.request.typegen_ai.prompt.*,gen_ai.completion.*gen_ai.usage.prompt_tokens,gen_ai.usage.completion_tokens,gen_ai.usage.total_tokens
HTTP/tool spans
http.method,http.url,http.status_code
Semantic steps (optional)
workflow.name,workflow.versiontraceloop.span.kind∈workflow|task|agent|tool
