New fields added in schema BetaMessageDeltaUsage: [fallback_credit]

What changed

New fields added in schema BetaMessageDeltaUsage: [fallback_credit] Affected surface: schema BetaMessageDeltaUsage. Root cause: schema `BetaMessageDeltaUsage`. Detected at Sat, 25 Jul 2026 06:57:43 UTC UTC.

Diff

{
  "added_fields": [
    "fallback_credit"
  ],
  "path": "schema BetaMessageDeltaUsage",
  "schema_path": "schema BetaMessageDeltaUsage"
}

Likely impact

This is an additive change. Existing integrations are unaffected; this is mostly useful if you want to take advantage of the new surface.

Recommended action

Diff your serializers against the new schema. The diff above shows what moved.