/**
 * 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.
 *
 * A `models.yml` `baseUrl` is the request origin verbatim (VPC endpoint, gateway, …);
 * only AWS's own regional host is re-pointed at the resolved region. SigV4 unaffected.
 */
import type { Effort } from "@oh-my-pi/pi-catalog/effort";
import type { StreamFunction, StreamOptions, ThinkingBudgets } from "../types.js";
/**
 * Resolve the service-model status for an in-stream exception/error code.
 * Frame headers carry the bare shape name in either camelCase
 * (`internalServerException`) or PascalCase (`InternalServerException`); both
 * normalize to the same map key. Unknown shapes default to 400.
 */
export declare function bedrockStreamExceptionStatus(code: string): number;
export type BedrockThinkingDisplay = "summarized" | "omitted";
/** Bedrock guardrail trace verbosity, mirrors the Converse `guardrailConfig.trace` values. */
export type BedrockGuardrailTrace = "enabled" | "disabled" | "enabled_full";
export interface BedrockOptions extends StreamOptions {
    region?: string;
    profile?: string;
    /** Amazon Bedrock API key sent as `Authorization: Bearer`, ahead of SigV4 credential resolution. */
    bearerToken?: string;
    /**
     * Amazon Bedrock Guardrail id or ARN. When set, the Converse request carries a
     * `guardrailConfig` so accounts that gate `bedrock:InvokeModel*` on the
     * `bedrock:GuardrailIdentifier` condition key stop returning an explicit deny.
     */
    guardrailIdentifier?: string;
    /** Guardrail version to apply. Defaults to `"DRAFT"` when a guardrail is set. */
    guardrailVersion?: string;
    /** Guardrail trace verbosity. Left unset (Bedrock default) unless provided. */
    guardrailTrace?: BedrockGuardrailTrace;
    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;
    /**
     * Per-request Bedrock invocation-log tags. Merged over `model.requestMetadata`
     * (per-call entries win on key collision). AWS caps the result at 16 entries;
     * keys 1-256 chars, values 0-256 chars, both limited to
     * `[a-zA-Z0-9\s:_@$#=/+,-.]`. Entries outside those limits are dropped.
     */
    requestMetadata?: Record<string, string>;
}
export declare const streamBedrock: StreamFunction<"bedrock-converse-stream">;