upd json rpc message schema

Author: bug-ops

crates/rmcp/tests/test_message_schema/client_json_rpc_message_schema.json

@@ -257,6 +257,17 @@
       "description": "```rust\n# use rmcp::model::ClientCapabilities;\nlet cap = ClientCapabilities::builder()\n    .enable_experimental()\n    .enable_roots()\n    .enable_roots_list_changed()\n    .build();\n```",
       "type": "object",
       "properties": {
+        "elicitation": {
+          "description": "Capability to handle elicitation requests from servers for interactive user input",
+          "anyOf": [
+            {
+              "$ref": "#/definitions/ElicitationCapability"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        },
         "experimental": {
           "type": [
             "object",
@@ -294,6 +305,9 @@
         {
           "$ref": "#/definitions/ListRootsResult"
         },
+        {
+          "$ref": "#/definitions/CreateElicitationResult"
+        },
         {
           "$ref": "#/definitions/EmptyObject"
         }
@@ -319,6 +333,26 @@
         "argument"
       ]
     },
+    "CreateElicitationResult": {
+      "description": "The result returned by a client in response to an elicitation request.\n\nContains the user's decision (accept/decline/cancel) and optionally their input data\nif they chose to accept the request.",
+      "type": "object",
+      "properties": {
+        "action": {
+          "description": "The user's decision on how to handle the elicitation request",
+          "allOf": [
+            {
+              "$ref": "#/definitions/ElicitationAction"
+            }
+          ]
+        },
+        "content": {
+          "description": "The actual data provided by the user, if they accepted the request.\nMust conform to the JSON schema specified in the original request.\nOnly present when action is Accept."
+        }
+      },
+      "required": [
+        "action"
+      ]
+    },
     "CreateMessageResult": {
       "description": "The result of a sampling/createMessage request containing the generated response.\n\nThis structure contains the generated message along with metadata about\nhow the generation was performed and why it stopped.",
       "type": "object",
@@ -357,6 +391,39 @@
         "content"
       ]
     },
+    "ElicitationAction": {
+      "description": "Represents the possible actions a user can take in response to an elicitation request.\n\nWhen a server requests user input through elicitation, the user can:\n- Accept: Provide the requested information and continue\n- Decline: Refuse to provide the information but continue the operation\n- Cancel: Stop the entire operation",
+      "oneOf": [
+        {
+          "description": "User accepts the request and provides the requested information",
+          "type": "string",
+          "const": "accept"
+        },
+        {
+          "description": "User declines to provide the information but allows the operation to continue",
+          "type": "string",
+          "const": "decline"
+        },
+        {
+          "description": "User cancels the entire operation",
+          "type": "string",
+          "const": "cancel"
+        }
+      ]
+    },
+    "ElicitationCapability": {
+      "description": "Capability for handling elicitation requests from servers.\n\nElicitation allows servers to request interactive input from users during tool execution.\nThis capability indicates that a client can handle elicitation requests and present\nappropriate UI to users for collecting the requested information.",
+      "type": "object",
+      "properties": {
+        "schemaValidation": {
+          "description": "Whether the client supports JSON Schema validation for elicitation responses.\nWhen true, the client will validate user input against the requested_schema\nbefore sending the response back to the server.",
+          "type": [
+            "boolean",
+            "null"
+          ]
+        }
+      }
+    },
     "EmptyObject": {
       "description": "This is commonly used for representing empty objects in MCP messages.\n\nwithout returning any specific data.",
       "type": "object"

crates/rmcp/tests/test_message_schema/server_json_rpc_message_schema.json

@@ -402,6 +402,45 @@
         }
       ]
     },
+    "CreateElicitationRequestParam": {
+      "description": "Parameters for creating an elicitation request to gather user input.\n\nThis structure contains everything needed to request interactive input from a user:\n- A human-readable message explaining what information is needed\n- A JSON schema defining the expected structure of the response",
+      "type": "object",
+      "properties": {
+        "message": {
+          "description": "Human-readable message explaining what input is needed from the user.\nThis should be clear and provide sufficient context for the user to understand\nwhat information they need to provide.",
+          "type": "string"
+        },
+        "requestedSchema": {
+          "description": "JSON Schema defining the expected structure and validation rules for the user's response.\nThis allows clients to validate input and provide appropriate UI controls.\nMust be a valid JSON Schema Draft 2020-12 object.",
+          "type": "object",
+          "additionalProperties": true
+        }
+      },
+      "required": [
+        "message",
+        "requestedSchema"
+      ]
+    },
+    "CreateElicitationResult": {
+      "description": "The result returned by a client in response to an elicitation request.\n\nContains the user's decision (accept/decline/cancel) and optionally their input data\nif they chose to accept the request.",
+      "type": "object",
+      "properties": {
+        "action": {
+          "description": "The user's decision on how to handle the elicitation request",
+          "allOf": [
+            {
+              "$ref": "#/definitions/ElicitationAction"
+            }
+          ]
+        },
+        "content": {
+          "description": "The actual data provided by the user, if they accepted the request.\nMust conform to the JSON schema specified in the original request.\nOnly present when action is Accept."
+        }
+      },
+      "required": [
+        "action"
+      ]
+    },
     "CreateMessageRequestMethod": {
       "type": "string",
       "format": "const",
@@ -480,6 +519,31 @@
         "maxTokens"
       ]
     },
+    "ElicitationAction": {
+      "description": "Represents the possible actions a user can take in response to an elicitation request.\n\nWhen a server requests user input through elicitation, the user can:\n- Accept: Provide the requested information and continue\n- Decline: Refuse to provide the information but continue the operation\n- Cancel: Stop the entire operation",
+      "oneOf": [
+        {
+          "description": "User accepts the request and provides the requested information",
+          "type": "string",
+          "const": "accept"
+        },
+        {
+          "description": "User declines to provide the information but allows the operation to continue",
+          "type": "string",
+          "const": "decline"
+        },
+        {
+          "description": "User cancels the entire operation",
+          "type": "string",
+          "const": "cancel"
+        }
+      ]
+    },
+    "ElicitationCreateRequestMethod": {
+      "type": "string",
+      "format": "const",
+      "const": "elicitation/create"
+    },
     "EmptyObject": {
       "description": "This is commonly used for representing empty objects in MCP messages.\n\nwithout returning any specific data.",
       "type": "object"
@@ -683,6 +747,9 @@
         },
         {
           "$ref": "#/definitions/RequestNoParam2"
+        },
+        {
+          "$ref": "#/definitions/Request2"
         }
       ],
       "required": [
@@ -1306,6 +1373,22 @@
         "params"
       ]
     },
+    "Request2": {
+      "description": "Represents a JSON-RPC request with method, parameters, and extensions.\n\nThis is the core structure for all MCP requests, containing:\n- `method`: The name of the method being called\n- `params`: The parameters for the method\n- `extensions`: Additional context data (similar to HTTP headers)",
+      "type": "object",
+      "properties": {
+        "method": {
+          "$ref": "#/definitions/ElicitationCreateRequestMethod"
+        },
+        "params": {
+          "$ref": "#/definitions/CreateElicitationRequestParam"
+        }
+      },
+      "required": [
+        "method",
+        "params"
+      ]
+    },
     "RequestNoParam": {
       "type": "object",
       "properties": {
@@ -1545,6 +1628,9 @@
         {
           "$ref": "#/definitions/ListToolsResult"
         },
+        {
+          "$ref": "#/definitions/CreateElicitationResult"
+        },
         {
           "$ref": "#/definitions/EmptyObject"
         }