added api docs

interface/external/chain_network.yaml

@@ -0,0 +1,10 @@
+components:
+  schemas:
+    ChainNetwork:
+      type: string
+      enum:
+        - unspecified
+        - ethereum_mainnet
+        - arbitrum_one
+        - tron_mainnet
+        - tron_nile

interface/external/endpoint_type.yaml

@@ -0,0 +1,10 @@
+components:
+  schemas:
+    EndpointType:
+      type: string
+      enum:
+        - ledger
+        - managedWallet
+        - cryptoAddress
+        - card
+        - cardToken

interface/external/fx_side.yaml

@@ -0,0 +1,8 @@
+components:
+  schemas:
+    FxSide:
+      type: string
+      enum:
+        - unspecified
+        - buy_base_sell_quote
+        - sell_base_buy_quote

interface/external/payment_kind.yaml

@@ -0,0 +1,9 @@
+components:
+  schemas:
+    PaymentKind:
+      type: string
+      enum:
+        - unspecified
+        - payout
+        - internal_transfer
+        - fx_conversion

interface/external/payment_method_type.yaml

@@ -0,0 +1,12 @@
+components:
+  schemas:
+    PaymentMethodType:
+      type: string
+      enum:
+        - iban
+        - card
+        - cardToken
+        - bankAccount
+        - wallet
+        - cryptoAddress
+        - ledger

interface/external/payment_state.yaml

@@ -0,0 +1,12 @@
+components:
+  schemas:
+    PaymentState:
+      type: string
+      enum:
+        - payment_state_unspecified
+        - payment_state_accepted
+        - payment_state_funds_reserved
+        - payment_state_submitted
+        - payment_state_settled
+        - payment_state_failed
+        - payment_state_cancelled

interface/external/settlement_mode.yaml

@@ -0,0 +1,8 @@
+components:
+  schemas:
+    SettlementMode:
+      type: string
+      enum:
+        - unspecified
+        - fix_source
+        - fix_received