/**
 * Session — tracks the current MCP session's model provenance.
 *
 * Created at MCP server startup. Auto-injected into every write operation.
 * The caller never has to pass provenance — the engine handles it.
 */
import type { ModelProvenance, ConfidenceTier } from './types.js';
import type { ModelProvenanceConfig } from './config.js';
export declare class Session {
    private readonly provenance;
    private readonly tiers;
    constructor(modelId: string, modelFamily: string, client: string, agent: string, tiers: ModelProvenanceConfig);
    /** Get the current session's provenance for write tagging. */
    getProvenance(): ModelProvenance;
    /** Get the confidence tier for the current model. */
    getConfidenceTier(): ConfidenceTier;
    /** Look up the confidence tier for any model ID. */
    static tierForModel(modelId: string, config: ModelProvenanceConfig): ConfidenceTier;
    /** Auto-detect model from environment variables. */
    static detectModel(): {
        modelId: string;
        modelFamily: string;
        client: string;
    };
}
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