McpProtocol

MCP protocol constants and response builders.

All methods are pure functions that produce Gson JsonObject structures conforming to the MCP JSON-RPC protocol.

Properties

Latest supported MCP protocol version.

Older supported MCP protocol version for backward compatibility.

Server version string reported in the initialize response.

fun buildInitializeResult(serverName: String, clientProtocolVersion: String?): JsonObject

Builds the initialize result object including protocol version, capabilities, and server info.

fun buildPingResult(): JsonObject

Builds the ping result.

fun buildToolsList(tools: List<McpTool>): JsonArray

Builds the tools array for a tools/list response from the given tool registry.

fun createErrorContent(message: String, meta: JsonObject? = null): JsonObject

Wraps an error tool result into the MCP content envelope.

fun createSuccessContent(message: String): JsonObject

Wraps a successful tool result into the MCP content envelope.

fun jsonRpcError(message: String, requestId: Int?): JsonObject

Creates a JSON-RPC error response with the given message.

fun jsonRpcSuccess(result: JsonObject, requestId: Int?): JsonObject

Wraps a result payload into a JSON-RPC success response.