/**
 * Internal Agent Run System Prompt
 *
 * Composes the system prompt for project-runtime agent runs, mirroring the
 * hosted chat runtime's instruction assembly. Before this, internal runs used
 * the agent's authored instructions verbatim, so request-scoped agents (e.g.
 * Studio-created project agents) never learned the project reference, branch,
 * Studio environment context, or effective tool surface of the run they were
 * executing in and asked users for values the harness already knew.
 *
 * The composed prompt extends the agent's resolved base instructions (which
 * already include the factory's visible skill catalog) with:
 * - the shared project-context block (project reference + branch)
 * - the requested model
 * - the caller-supplied environment context (`studio_context` context item)
 * - the effective run tool inventory
 *
 * @module
 */
import type { Agent, AgentSystem } from "../agent/index.js";
import type { ChatSystemMessage } from "../chat/types.js";
import type { RuntimeRunAgentInput } from "./schema.js";
import type { ModelRuntime } from "../provider/index.js";
/** Caller-supplied run context extracted from the `studio_context` item. */
export type InternalAgentStudioRunContext = {
    environmentContext?: string;
    projectId?: string;
    branchId?: string | null;
};
/** Extracts the Studio-supplied run context from run context items. */
export declare function getInternalAgentStudioRunContext(context: RuntimeRunAgentInput["context"]): InternalAgentStudioRunContext;
/** Input payload for compose internal agent run system prompt. */
export type ComposeInternalAgentRunSystemPromptInput = {
    agent: Agent;
    resolvedBaseSystem?: AgentSystem;
    runInput: RuntimeRunAgentInput;
    projectId?: string | null;
    branchId?: string | null;
    toolNames: readonly string[];
    providerOptionKey?: string;
    modelRuntime?: ModelRuntime;
};
/** Composes the internal agent run system prompt. */
export declare function composeInternalAgentRunSystemPrompt(input: ComposeInternalAgentRunSystemPromptInput): Promise<ChatSystemMessage[]>;
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