/**
 * src/tools/_placeholder.ts — Stub handler for the 25+ Phase 0 placeholder tools.
 *
 * The beacon-mcp-tools-v1 contract reserves 30+ tool names but only writes
 * full input/output schemas for 8 of them (5 key + 3 feedback/prefs). Until
 * subagent-A finishes the schema sweep in Week 5, every reserved name still
 * has to be a registered MCP tool — otherwise agents discover only 8 tools
 * and can't reason about the full surface.
 *
 * This handler returns SkillFmToolError code = TOOL_NOT_IMPLEMENTED.
 *
 * TODO Week 5:
 *   - Delete this file once every tool name has its own typed handler.
 *   - Until then, keep the userHint copy short — agents may forward it
 *     verbatim to end users.
 */
import { type SkillFmToolResult } from '../_vendored-contracts/beacon-mcp-tools-v1.js';
/**
 * Generic placeholder. The MCP server registers it for every reserved tool
 * name, capturing `toolName` in a closure so the error message identifies
 * which tool the agent tried to call.
 */
export declare function makePlaceholderHandler(toolName: string): (input: Record<string, unknown>) => Promise<SkillFmToolResult<Record<string, unknown>>>;
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