/**
 * MCP protocol types used by display helpers.
 *
 * These are structurally compatible with `@modelcontextprotocol/sdk`'s
 * `CallToolResult` — prefab display helpers can be returned directly from
 * SDK tool handlers without casting.
 *
 * @see https://spec.modelcontextprotocol.io/specification/server/tools/
 */
/** MCP text content block (compatible with SDK's TextContent) */
export interface McpTextContent {
    type: 'text';
    text: string;
    annotations?: Record<string, unknown>;
    _meta?: Record<string, unknown>;
}
/** MCP image content block (compatible with SDK's ImageContent) */
export interface McpImageContent {
    type: 'image';
    data: string;
    mimeType: string;
    annotations?: Record<string, unknown>;
    _meta?: Record<string, unknown>;
}
/** Text resource contents (has `text`, never `blob`). */
export interface McpTextResourceContents {
    uri: string;
    mimeType?: string;
    text: string;
    _meta?: Record<string, unknown>;
}
/** Blob resource contents (has `blob`, never `text`). */
export interface McpBlobResourceContents {
    uri: string;
    mimeType?: string;
    blob: string;
    _meta?: Record<string, unknown>;
}
/** MCP embedded resource content block (compatible with SDK's EmbeddedResource) */
export interface McpResourceContent {
    type: 'resource';
    resource: McpTextResourceContents | McpBlobResourceContents;
    annotations?: Record<string, unknown>;
    _meta?: Record<string, unknown>;
}
/** Any MCP content block */
export type McpContent = McpTextContent | McpImageContent | McpResourceContent;
/**
 * MCP tool result — returned from tool handlers.
 *
 * Structurally assignable to `@modelcontextprotocol/sdk`'s `CallToolResult`.
 * The index signature allows the SDK's `Result` base interface to be satisfied
 * without requiring an explicit cast.
 */
export interface McpToolResult {
    content: McpContent[];
    /** Structured payload forwarded to MCP Apps iframes via ui/notifications/tool-result. */
    structuredContent?: Record<string, unknown>;
    isError?: boolean;
    _meta?: Record<string, unknown>;
    [key: string]: unknown;
}
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