client-methods.json

{
    "$schema": "http://json-schema.org/draft-07/schema#",
    "title": "MCP Client Methods",
    "description": "List of all client-to-server method calls in the Model Context Protocol",
    "type": "object",
    "properties": {
        "methods": {
            "type": "array",
            "items": {
                "type": "object",
                "properties": {
                    "name": {
                        "type": "string",
                        "description": "The name of the method"
                    },
                    "description": {
                        "type": "string",
                        "description": "Description of what the method does"
                    },
                    "params": {
                        "type": "object",
                        "description": "Parameters accepted by the method"
                    }
                }
            }
        }
    },
    "methods": [
        {
            "name": "initialize",
            "description": "Sent from the client to the server when it first connects, asking it to begin initialization",
            "params": {
                "capabilities": {
                    "type": "object",
                    "description": "Capabilities that the client supports"
                },
                "clientInfo": {
                    "type": "object",
                    "description": "Information about the client implementation",
                    "properties": {
                        "name": {
                            "type": "string",
                            "description": "Name of the client implementation"
                        },
                        "version": {
                            "type": "string",
                            "description": "Version of the client implementation"
                        }
                    }
                },
                "protocolVersion": {
                    "type": "string",
                    "description": "The latest version of the Model Context Protocol that the client supports"
                }
            }
        },
        {
            "name": "ping",
            "description": "A ping to check that the server is still alive",
            "params": {
                "_meta": {
                    "type": "object",
                    "properties": {
                        "progressToken": {
                            "type": [
                                "string",
                                "integer"
                            ],
                            "description": "Token for progress notifications"
                        }
                    }
                }
            }
        },
        {
            "name": "prompts/list",
            "description": "Request a list of prompts and prompt templates from the server",
            "params": {
                "cursor": {
                    "type": "string",
                    "description": "An opaque token for pagination"
                }
            }
        },
        {
            "name": "prompts/get",
            "description": "Used by the client to get a prompt provided by the server",
            "params": {
                "name": {
                    "type": "string",
                    "description": "The name of the prompt or prompt template"
                },
                "arguments": {
                    "type": "object",
                    "description": "Arguments to use for templating the prompt",
                    "additionalProperties": {
                        "type": "string"
                    }
                }
            }
        },
        {
            "name": "resources/templates/list",
            "description": "Request a list of resource templates from the server",
            "params": {
                "cursor": {
                    "type": "string",
                    "description": "An opaque token for pagination"
                }
            }
        },
        {
            "name": "resources/list",
            "description": "Request a list of resources from the server",
            "params": {
                "cursor": {
                    "type": "string",
                    "description": "An opaque token for pagination"
                }
            }
        },
        {
            "name": "resources/read",
            "description": "Sent from the client to the server, to read a specific resource URI",
            "params": {
                "uri": {
                    "type": "string",
                    "format": "uri",
                    "description": "The URI of the resource to read"
                }
            }
        },
        {
            "name": "resources/subscribe",
            "description": "Request resources/updated notifications from the server whenever a particular resource changes",
            "params": {
                "uri": {
                    "type": "string",
                    "format": "uri",
                    "description": "The URI of the resource to subscribe to"
                }
            }
        },
        {
            "name": "resources/unsubscribe",
            "description": "Request cancellation of resources/updated notifications from the server",
            "params": {
                "uri": {
                    "type": "string",
                    "format": "uri",
                    "description": "The URI of the resource to unsubscribe from"
                }
            }
        },
        {
            "name": "roots/list",
            "description": "Request a list of root URIs from the client",
            "params": {
                "_meta": {
                    "type": "object",
                    "properties": {
                        "progressToken": {
                            "type": [
                                "string",
                                "integer"
                            ],
                            "description": "Token for progress notifications"
                        }
                    }
                }
            }
        },
        {
            "name": "tools/call",
            "description": "Request the server to execute a tool",
            "params": {
                "name": {
                    "type": "string",
                    "description": "The name of the tool to call"
                },
                "arguments": {
                    "type": "object",
                    "description": "The parameters to pass to the tool",
                    "additionalProperties": true
                }
            }
        },
        {
            "name": "tools/list",
            "description": "Request a list of available tools from the server",
            "params": {
                "cursor": {
                    "type": "string",
                    "description": "An opaque token for pagination"
                }
            }
        },
        {
            "name": "logging/setLevel",
            "description": "A request from the client to the server, to enable or adjust logging",
            "params": {
                "level": {
                    "type": "string",
                    "enum": [
                        "alert",
                        "critical",
                        "debug",
                        "emergency",
                        "error",
                        "info",
                        "notice",
                        "warning"
                    ],
                    "description": "The level of logging that the client wants to receive from the server"
                }
            }
        },
        {
            "name": "completion/complete",
            "description": "A request from the client to the server, to ask for completion options",
            "params": {
                "argument": {
                    "type": "object",
                    "description": "The argument's information",
                    "properties": {
                        "name": {
                            "type": "string",
                            "description": "The name of the argument"
                        },
                        "value": {
                            "type": "string",
                            "description": "The value of the argument to use for completion matching"
                        }
                    }
                },
                "ref": {
                    "type": "object",
                    "description": "Reference to a prompt or resource",
                    "oneOf": [
                        {
                            "properties": {
                                "type": {
                                    "const": "ref/prompt"
                                },
                                "name": {
                                    "type": "string"
                                }
                            }
                        },
                        {
                            "properties": {
                                "type": {
                                    "const": "ref/resource"
                                },
                                "uri": {
                                    "type": "string",
                                    "format": "uri-template"
                                }
                            }
                        }
                    ]
                }
            }
        },
        {
            "name": "notifications/initialized",
            "description": "Notification sent from the client to the server after initialization has finished",
            "params": {
                "_meta": {
                    "type": "object",
                    "description": "Additional metadata for the notification"
                }
            }
        },
        {
            "name": "notifications/cancelled",
            "description": "Notification sent by either side to indicate that it is cancelling a previously-issued request",
            "params": {
                "requestId": {
                    "type": [
                        "string",
                        "integer"
                    ],
                    "description": "The ID of the request to cancel"
                },
                "reason": {
                    "type": "string",
                    "description": "An optional string describing the reason for the cancellation"
                }
            }
        },
        {
            "name": "notifications/progress",
            "description": "An out-of-band notification used to inform the receiver of a progress update for a long-running request",
            "params": {
                "progress": {
                    "type": "number",
                    "description": "The progress thus far"
                },
                "progressToken": {
                    "type": [
                        "string",
                        "integer"
                    ],
                    "description": "The progress token which was given in the initial request"
                },
                "total": {
                    "type": "number",
                    "description": "Total number of items to process, if known"
                }
            }
        },
        {
            "name": "notifications/roots/list_changed",
            "description": "A notification from the client to the server, informing it that the list of roots has changed",
            "params": {
                "_meta": {
                    "type": "object",
                    "description": "Additional metadata for the notification"
                }
            }
        }
    ]
}