/**
 * src/tools/check-usage.ts — handler for `skillfm_check_usage`.
 *
 * Phase 0: returns the mock fixture from BrainClient.getUsage() (matches
 * ACCEPTANCE-SCENARIO §1.1 A2 — $487 / month, $312 already saved).
 *
 * TODO Week 5:
 *   - Pull real usage from each provider via BYOK proxy (LlmTask reverse
 *     dispatch — agent runs the SDK calls on user machine, MCP only
 *     aggregates). Never read API keys here.
 *   - Honor `period` input ('24h' / '7d' / '30d') — Phase 0 always returns
 *     monthly.
 *   - Apply Pro gating: Free users get totalSpent + savings only;
 *     `byPlatform` breakdown locked behind ProLockedFeature.
 *   - Per-platform `tokens` and `calls` should come from ccusage / Mem0
 *     integrations, not from brain.
 *   - Add cache: if last fetch < 30s ago, return cached blob.
 */
import { type SkillFmCheckUsageInput, type SkillFmCheckUsageOutput, type SkillFmToolResult } from '../_vendored-contracts/beacon-mcp-tools-v1.js';
import type { BrainClient } from '../brain-client.js';
export interface CheckUsageDeps {
    brain: BrainClient;
}
export declare function handleCheckUsage(_input: SkillFmCheckUsageInput, deps: CheckUsageDeps): Promise<SkillFmToolResult<SkillFmCheckUsageOutput>>;
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