/** Content returned when an MCP resource is read. */
export interface ResourceReadResult {
    /** UTF-8 text body of the resource. */
    text: string;
}
/**
 * Declarative definition of an MCP resource served by the Grackle MCP server.
 *
 * `read` is a function (not a static string) so a later phase (#1239) can serve
 * dynamic / per-session / agent-authored content without changing this shape.
 */
export interface ResourceDefinition {
    /** Resource URI, e.g. `ui://grackle/hello-widget`. */
    uri: string;
    /** Human-readable name. */
    name: string;
    /** Optional description shown in `resources/list`. */
    description?: string;
    /** MIME type (e.g. `text/html;profile=mcp-app` for MCP Apps widgets). */
    mimeType: string;
    /** Optional `_meta` (e.g. MCP Apps `McpUiResourceMeta`); omitted in #1237. */
    meta?: Record<string, unknown>;
    /** Produce the resource body. */
    read: () => ResourceReadResult;
}
/**
 * Registry of MCP resource definitions with lookup support — mirrors
 * {@link ToolRegistry}. Static (register-at-startup) in #1237; the mutable /
 * per-session registry for agent-authored widgets is #1239.
 */
export declare class ResourceRegistry {
    private readonly resources;
    /** Register a resource. Throws if a resource with the same URI already exists. */
    register(resource: ResourceDefinition): void;
    /** Register an array of resource definitions. */
    registerAll(resources: ResourceDefinition[]): void;
    /** Return all registered resources. */
    list(): ResourceDefinition[];
    /** Look up a resource by URI. Returns undefined if not found. */
    get(uri: string): ResourceDefinition | undefined;
}
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