[ANCHOR-251] OpenAPI SEP-31 updates (#125)

* OpenAPI SEP-31 updates

* English...

* Address comments

ap_api/callbacks/customer/index.mdx

@@ -5,16 +5,19 @@ order: 0
 
 import {EndpointsTable} from "@site/src/components/EndpointsTable";
 
+The Anchor Platform does not store customer KYC data. Instead, the Anchor Platform forwards this data to and requests it from the business.
+
+The customer callbacks are designed for this purpose. Currently, requests & responses for these endpoints are almost identical to the [SEP-12 KYC API specification][sep-12].
+
 <EndpointsTable title="Endpoints">
 
 | | |
 | --- | --------------------- |
 | GET | [/customer](../get-customer.api.mdx) |
 | PUT | [/customer](../put-customer.api.mdx) |
-| PUT | [/customer/callback](../put-customer-callback.api.mdx) |
 | DELETE | [/customer/:id](../del-customer.api.mdx) |
 
 
 </EndpointsTable>
 
-[sep-38]: https://github.com/stellar/stellar-protocol/blob/master/ecosystem/sep-0038.md
+[sep-12]: https://github.com/stellar/stellar-protocol/blob/master/ecosystem/sep-0012.md

ap_api/callbacks/del-customer.api.mdx

@@ -1,11 +1,11 @@
 ---
 id: del-customer
 title: "Delete Customer Data"
-description: "The request for this endpoint is identical to the `PUT /customer/callback` request defined in SEP-12."
+description: "The request for this endpoint is identical to the"
 sidebar_label: "Delete Customer Data"
 hide_title: true
 hide_table_of_contents: true
-api: {"tags":["Customers"],"description":"The request for this endpoint is identical to the `PUT /customer/callback` request defined in SEP-12.\n\nDelete the customer's data or queue the customers data for deletion.\n","operationId":"delCustomer","parameters":[{"in":"path","name":"id","schema":{"type":"string"},"required":true}],"responses":{"204":{"description":"Success."},"404":{"description":"Customer not found.","content":{"application/json":{"schema":{"type":"object","properties":{"error":{"type":"string"},"id":{"type":"string"}},"required":["error"],"title":"Error"}}}}},"method":"delete","path":"/customer/{id}","info":{"version":"2.0.0","description":"The Synchronous Callbacks API specification for the Stellar Anchor Platform project.\n\nThe Synchronous Callbacks API defines requests made by the Platform while it is processing a request from a client application. The \nanchor's responses to these requests affect the Platform responses to the client application.\n","title":"Synchronous Callbacks API"},"postman":{"name":"Delete Customer Data","description":{"content":"The request for this endpoint is identical to the `PUT /customer/callback` request defined in SEP-12.\n\nDelete the customer's data or queue the customers data for deletion.\n","type":"text/plain"},"url":{"path":["customer",":id"],"host":["{{baseUrl}}"],"query":[],"variable":[{"disabled":false,"description":{"content":"(Required) ","type":"text/plain"},"type":"any","value":"","key":"id"}]},"header":[{"key":"Accept","value":"application/json"}],"method":"DELETE"}}
+api: {"tags":["Customers"],"description":"The request for this endpoint is identical to the \n[`DELETE /customer`](https://github.com/stellar/stellar-protocol/blob/master/ecosystem/sep-0012.md#customer-delete) \nrequest defined in SEP-12.\n\nDelete the customer's data or queue the customers data for deletion.\n","operationId":"delCustomer","parameters":[{"in":"path","name":"id","schema":{"type":"string"},"required":true}],"responses":{"204":{"description":"Success."},"404":{"description":"Customer not found.","content":{"application/json":{"schema":{"type":"object","properties":{"error":{"type":"string"},"id":{"type":"string"}},"required":["error"],"title":"Error"}}}}},"method":"delete","path":"/customer/{id}","info":{"version":"2.0.0","description":"The Synchronous Callbacks API specification for the Stellar Anchor Platform project.\n\nThe Synchronous Callbacks API defines requests made by the Platform while it is processing a request from a client application. The \nanchor's responses to these requests affect the Platform responses to the client application.\n","title":"Synchronous Callbacks API"},"postman":{"name":"Delete Customer Data","description":{"content":"The request for this endpoint is identical to the \n[`DELETE /customer`](https://github.com/stellar/stellar-protocol/blob/master/ecosystem/sep-0012.md#customer-delete) \nrequest defined in SEP-12.\n\nDelete the customer's data or queue the customers data for deletion.\n","type":"text/plain"},"url":{"path":["customer",":id"],"host":["{{baseUrl}}"],"query":[],"variable":[{"disabled":false,"description":{"content":"(Required) ","type":"text/plain"},"type":"any","value":"","key":"id"}]},"header":[{"key":"Accept","value":"application/json"}],"method":"DELETE"}}
 sidebar_class_name: "delete api-method"
 info_path: api/callbacks/synchronous-callbacks-api
 custom_edit_url: null
@@ -24,7 +24,9 @@ import TabItem from "@theme/TabItem";
 
 
 
-The request for this endpoint is identical to the `PUT /customer/callback` request defined in SEP-12.
+The request for this endpoint is identical to the 
+[`DELETE /customer`](https://github.com/stellar/stellar-protocol/blob/master/ecosystem/sep-0012.md#customer-delete) 
+request defined in SEP-12.
 
 Delete the customer's data or queue the customers data for deletion.
 

ap_api/callbacks/fee/index.mdx

@@ -5,6 +5,10 @@ order: 0
 
 import {EndpointsTable} from "@site/src/components/EndpointsTable";
 
+The `/fee` is a special endpoint, that is called to fetch fee information for a transaction without a quote.
+
+For example, if your business supports clients who want to skip the quote creation process and will be using the businesses' market rate.
+
 <EndpointsTable title="Endpoints">
 
 | | |
@@ -13,5 +17,3 @@ import {EndpointsTable} from "@site/src/components/EndpointsTable";
 
 
 </EndpointsTable>
-
-[sep-38]: https://github.com/stellar/stellar-protocol/blob/master/ecosystem/sep-0038.md