Interface PropagateAttributesParams

INTERNAL USE ONLY - For Langfuse experiment framework.

This parameter is used internally by the Langfuse experiment system to propagate experiment context to child spans. It should NOT be used by external code.

If true, propagates attributes using OpenTelemetry baggage for cross-process/service propagation.

Security warning: When enabled, attribute values are added to HTTP headers on ALL outbound requests. Only enable if values are safe to transmit via HTTP headers and you need cross-service tracing.

Additional key-value metadata to propagate to all spans.

• Keys and values must be strings
• All values must be ≤200 characters
• Use for dimensions like internal correlating identifiers
• AVOID: large payloads, sensitive data, non-string values (will be dropped with warning)

Session identifier to associate with all spans in this context. Must be a string ≤200 characters. Use this to group related traces within a user session (e.g., a conversation thread, multi-turn interaction).

List of tags to categorize the group of observations

User identifier to associate with all spans in this context. Must be a string ≤200 characters. Use this to track which user generated each trace and enable e.g. per-user cost/performance analysis.

Version identifier for parts of your application that are independently versioned, e.g. agents