Telemetry correlation

Telemetry explains what happened operationally. Evidence explains why an outcome should be trusted. Agent Evidence should reference telemetry without replacing it.

Required correlation fields

• trace_id
• span_id
• span_kind when known
• event_id or log id when known
• runtime_id, session_id, thread_id, turn_id, task_id, run_id, tool_call_id, artifact_id when available
• exporter or backend reference when traces are not embedded

Rules

• Do not copy raw traces into every evidence pack.
• Preserve W3C trace context ids when available.
• Preserve OpenTelemetry GenAI operation names when available.
• Mark telemetry as unavailable or not_collected instead of inferring success.
• Link evidence facts to the smallest useful span or event.
• Treat tool arguments and results as potentially sensitive.

Common joins

Evidence fact	Telemetry join
Claim derived from tool result	tool_call_id, tool span, result ref.
Claim derived from retrieval	retrieval span, query id, source ids.
Artifact generated by a model	model span, artifact id, version id.
Verification check	check activity id, span id, issue refs.
Export	export activity id, file hashes, pack id.