| Layer | Product | Role |
|---|---|---|
| L4 | Blekline | Allow/block at ingress; metadata audit |
| L3 | LangSmith | Eval, traces, datasets |
Wiring
- Blekline emits metadata-only events via
/api/events(no prompt bodies by default) - Forward OTel labels from Telemetry spec to LangSmith
- Correlate traces via
requestId
LangSmith measures quality after Blekline governance decisions. LangSmith is not a SIEM — use Enterprise telemetry for Splunk/Datadog.
Next steps: Eval hub · Trust boundaries · Telemetry · Open workspace