fix: Errata for 1.0-draft (#5)

* fix: Errata for 1.0-draft

* Fix name

Author: nbarbettini

spec/http/1.0/openapi.json

@@ -1,15 +1,15 @@
 {
   "openapi": "3.1.0",
   "info": {
-    "title": "Open Tool Calling Standard",
+    "title": "Open eXecution Protocol (OXP) Standard",
     "version": "1.0.0",
     "description": "A standard for calling tools (functions or services) in a distributed system.",
     "license": {
       "name": "MIT",
       "url": "https://opensource.org/licenses/MIT"
     },
     "contact": {
-      "url": "https://opentoolcalling.org"
+      "url": "https://openexecprotocol.org"
     }
   },
   "paths": {
@@ -66,14 +66,14 @@
                       "type": "string",
                       "format": "uri"
                     },
-                    "tools": {
+                    "items": {
                       "type": "array",
                       "items": {
                         "$ref": "#/components/schemas/ToolDefinition"
                       }
                     }
                   },
-                  "required": ["tools"]
+                  "required": ["items"]
                 }
               }
             }
@@ -222,15 +222,8 @@
           },
           "input_schema": {
             "type": "object",
-            "properties": {
-              "parameters": {
-                "type": "object",
-                "additionalProperties": true,
-                "description": "JSON Schema describing the input parameters for the tool. Supports standard JSON Schema validation but excludes $ref and definitions/schemas for simplicity."
-              }
-            },
-            "required": ["parameters"],
-            "additionalProperties": true
+            "additionalProperties": true,
+            "description": "JSON Schema describing the input parameters for the tool. Supports standard JSON Schema validation but excludes $ref and definitions/schemas for simplicity."
           },
           "output_schema": {
             "oneOf": [
@@ -298,13 +291,7 @@
             "additionalProperties": true
           }
         },
-        "required": [
-          "id",
-          "name",
-          "description",
-          "input_schema",
-          "output_schema"
-        ],
+        "required": ["id", "name", "description", "version"],
         "additionalProperties": false
       },
       "CallToolRequest": {
@@ -430,6 +417,23 @@
           "developer_message": {
             "type": "string",
             "description": "An internal message that will be logged but will not be shown to the user or the AI model"
+          },
+          "missing_requirements": {
+            "type": "object",
+            "description": "A map of missing requirements.",
+            "properties": {
+              "authorization": {
+                "type": "array",
+                "description": "A list of authorization challenges that must be completed before the tool can be called.",
+                "items": {
+                  "$ref": "#/components/schemas/ToolAuthorizationChallenge"
+                }
+              },
+              "user_id": {
+                "type": "boolean",
+                "description": "Whether the tool requires a user ID."
+              }
+            }
           }
         },
         "required": ["message"],
@@ -454,6 +458,25 @@
         "required": ["message"],
         "additionalProperties": true
       },
+      "ToolAuthorizationChallenge": {
+        "type": "object",
+        "properties": {
+          "id": {
+            "type": "string",
+            "description": "The unique identifier for the authorization challenge."
+          },
+          "url": {
+            "type": "string",
+            "description": "The URL the user must visit to complete the authorization challenge."
+          },
+          "check_url": {
+            "type": "string",
+            "description": "The URL to check the status of the authorization challenge."
+          }
+        },
+        "required": ["id", "url"],
+        "additionalProperties": false
+      },
       "ToolError": {
         "type": "object",
         "description": "An error that occurred inside the tool function.",