lightsparkdev · jacklatourette · Jul 31, 2026
diff --git a/mintlify/openapi.yaml b/mintlify/openapi.yaml
diff --git a/openapi.yaml b/openapi.yaml
diff --git a/openapi/components/schemas/config/FeeConfig.yaml b/openapi/components/schemas/config/FeeConfig.yaml
@@ -18,13 +18,27 @@ properties:
       Variable fee in basis points (1 bps = 0.01%) to apply to a transaction's source-currency amount.
     example: 30
   fixedFee:
-    type: integer
-    format: int64
-    minimum: 0
-    description: >-
-      Fixed fee charged per transaction, denominated in the smallest unit of
-      the fee config's `sourceCurrency` (e.g., cents for USD).
-    example: 100
+    type: object
+    description: Fixed fee charged per transaction.
+    properties:
+      amount:
+        type: integer
+        format: int64
+        minimum: 0
+        description: >-
+          Fee amount in the smallest unit of the fixed fee's `currency`
+          (e.g., cents for USD).
+        example: 100
+      currency:
+        type: string
+        description: >-
+          Three-letter currency code (ISO 4217) the fixed fee is denominated
+          in. Some cryptocurrencies may use their own ticker symbols (e.g.
+          "BTC" for Bitcoin, "USDC" for USDC, etc.)
+        example: USD
+    required:
+      - amount
+      - currency
 required:
   - feeType
   - sourceCurrency