/**
 * Amazon Bedrock Converse Stream provider.
 *
 * Talks directly to `bedrock-runtime.{region}.amazonaws.com` over HTTPS with
 * SigV4 signing and decodes the `application/vnd.amazon.eventstream` response.
 * No `@aws-sdk/*`, no `@smithy/*`, no `proxy-agent`. Proxies are honored via
 * Bun's native `HTTPS_PROXY` support.
 */
import type { Effort } from "@oh-my-pi/pi-catalog/effort";
import type { StreamFunction, StreamOptions, ThinkingBudgets } from "../types";
export type BedrockThinkingDisplay = "summarized" | "omitted";
export interface BedrockOptions extends StreamOptions {
    region?: string;
    profile?: string;
    /** Amazon Bedrock API key sent as `Authorization: Bearer`, ahead of SigV4 credential resolution. */
    bearerToken?: string;
    toolChoice?: "auto" | "any" | "none" | {
        type: "tool";
        name: string;
    };
    reasoning?: Effort;
    thinkingBudgets?: ThinkingBudgets;
    interleavedThinking?: boolean;
    /**
     * Controls how Claude returns thinking content in Bedrock responses.
     * - `"summarized"`: thinking blocks include human-readable summaries (default here).
     * - `"omitted"`: thinking content is suppressed; the encrypted signature still
     *   travels back for multi-turn continuity.
     *
     * Starting with Claude Opus 4.7 and Claude Fable/Mythos 5 the Anthropic API
     * default is `"omitted"`, which leaves callers waiting on a silent stream during
     * long reasoning runs (issue #1373). We default to `"summarized"` so adaptive-
     * thinking models that accept the field keep producing visible thinking deltas.
     * Older adaptive-thinking models (Opus 4.6, Sonnet 4.6+) reject the field, so
     * we omit it for them.
     */
    thinkingDisplay?: BedrockThinkingDisplay;
}
export declare const streamBedrock: StreamFunction<"bedrock-converse-stream">;