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Observability

This page lists the minimum observability signals you should capture for production support.

Correlation fields (log these)

FieldWhere it comes from
realm_idapp config
principal_idyour request context
billing_account_idmapping table or token issue response
Idempotency-Keyyour client headers
X-Request-Idyour request headers (recommended)
response envelopeVluna response

Hints

Treat hints as machine-readable signals:

  • record them in logs
  • aggregate counts by hint type
  • alert on unexpected spikes (for example, pricing.not_configured)
  • request rate and latency per endpoint
  • error rate by status code and error code
  • idempotent replay rate
  • rate limit events
  • wallet insufficient balance events

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