diff --git a/bin/cli/commands/registry.mjs b/bin/cli/commands/registry.mjs
index d8772a856b..03099fe0c7 100644
--- a/bin/cli/commands/registry.mjs
+++ b/bin/cli/commands/registry.mjs
@@ -2,6 +2,7 @@ import { registerChat } from "./chat.mjs";
 import { registerStream } from "./stream.mjs";
 import { registerSimulate } from "./simulate.mjs";
 import { registerCost } from "./cost.mjs";
+import { registerUsage } from "./usage.mjs";
 import { registerServe } from "./serve.mjs";
 import { registerStop } from "./stop.mjs";
 import { registerRestart } from "./restart.mjs";
@@ -33,6 +34,7 @@ export function registerCommands(program) {
   registerStream(program);
   registerSimulate(program);
   registerCost(program);
+  registerUsage(program);
   registerServe(program);
   registerStop(program);
   registerRestart(program);
diff --git a/bin/cli/commands/usage.mjs b/bin/cli/commands/usage.mjs
new file mode 100644
index 0000000000..780f6d3e3f
--- /dev/null
+++ b/bin/cli/commands/usage.mjs
@@ -0,0 +1,331 @@
+import { setTimeout as sleep } from "node:timers/promises";
+import { apiFetch } from "../api.mjs";
+import { emit, maskSecret } from "../output.mjs";
+import { t } from "../i18n.mjs";
+
+const fmtTs = (v) => (v ? new Date(v).toISOString().replace("T", " ").slice(0, 19) : "-");
+const maskKey = (v) => (typeof v === "string" ? maskSecret(v) : (v ?? "-"));
+const fmtCost = (v) => (v ? `$${Number(v).toFixed(4)}` : "-");
+const fmtTokens = (v) => {
+  if (!v) return "0";
+  if (v > 1e6) return `${(v / 1e6).toFixed(1)}M`;
+  if (v > 1e3) return `${(v / 1e3).toFixed(1)}K`;
+  return String(v);
+};
+
+const analyticsSchema = [
+  { key: "provider", header: "Provider", width: 20 },
+  { key: "requests", header: "Reqs", formatter: (v) => (v != null ? v.toLocaleString() : "0") },
+  { key: "tokensIn", header: "Tokens In", formatter: fmtTokens },
+  { key: "tokensOut", header: "Tokens Out", formatter: fmtTokens },
+  { key: "costUsd", header: "Cost (USD)", formatter: fmtCost },
+];
+
+const budgetSchema = [
+  { key: "scope", header: "Scope", width: 25 },
+  { key: "period", header: "Period" },
+  { key: "limit", header: "Limit (USD)", formatter: (v) => `$${Number(v).toFixed(2)}` },
+  { key: "used", header: "Used (USD)", formatter: (v) => `$${Number(v).toFixed(2)}` },
+  { key: "remaining", header: "Remaining", formatter: (v) => `$${Number(v).toFixed(2)}` },
+  { key: "pct", header: "%", formatter: (v) => `${(Number(v) * 100).toFixed(1)}%` },
+];
+
+const quotaSchema = [
+  { key: "provider", header: "Provider", width: 20 },
+  { key: "limit", header: "Limit", formatter: fmtTokens },
+  { key: "used", header: "Used", formatter: fmtTokens },
+  { key: "remaining", header: "Remaining", formatter: fmtTokens },
+  { key: "resetAt", header: "Reset At", formatter: fmtTs },
+  { key: "state", header: "State" },
+];
+
+const logsSchema = [
+  { key: "timestamp", header: "Time", width: 20, formatter: fmtTs },
+  { key: "apiKey", header: "API Key", width: 16, formatter: maskKey },
+  { key: "method", header: "Method", width: 8 },
+  { key: "provider", header: "Provider", width: 14 },
+  { key: "model", header: "Model", width: 25 },
+  { key: "tokens", header: "Tokens", formatter: fmtTokens },
+  { key: "costUsd", header: "Cost", formatter: fmtCost },
+  { key: "latencyMs", header: "Latency", formatter: (v) => (v ? `${v}ms` : "-") },
+  { key: "status", header: "Status" },
+];
+
+export function registerUsage(program) {
+  const usage = program.command("usage").description(t("usage.description"));
+
+  // analytics
+  usage
+    .command("analytics")
+    .description(t("usage.analytics.description"))
+    .option("--period <range>", t("usage.analytics.period"), "30d")
+    .option("--provider <id>", t("usage.analytics.provider"))
+    .action(runUsageAnalytics);
+
+  // budget
+  const budget = usage.command("budget").description(t("usage.budget.description"));
+  budget.command("list").action(runBudgetList);
+  budget.command("get [scope]").action(runBudgetGet);
+  budget
+    .command("set <amount>")
+    .option("--scope <s>", t("usage.budget.set.scope"), "global")
+    .option("--period <p>", t("usage.budget.set.period"), "monthly")
+    .action(runBudgetSet);
+  budget.command("reset [scope]").action(runBudgetReset);
+
+  // quota
+  usage
+    .command("quota")
+    .description(t("usage.quota.description"))
+    .option("--provider <id>", t("usage.quota.provider"))
+    .option("--check", t("usage.quota.check"))
+    .action(runUsageQuota);
+
+  // logs
+  usage
+    .command("logs")
+    .description(t("usage.logs.description"))
+    .option("--limit <n>", t("usage.logs.limit"), parseInt, 100)
+    .option("--search <q>", t("usage.logs.search"))
+    .option("--since <ts>", t("usage.logs.since"))
+    .option("--follow", t("usage.logs.follow"))
+    .option("--api-key <k>", t("usage.logs.api_key"))
+    .action(runUsageLogs);
+
+  // utilization
+  usage
+    .command("utilization")
+    .description(t("usage.utilization.description"))
+    .option("--api-key <k>", t("usage.utilization.api_key"))
+    .action(runUsageUtilization);
+
+  // history
+  usage
+    .command("history")
+    .description(t("usage.history.description"))
+    .option("--limit <n>", t("usage.history.limit"), parseInt, 100)
+    .action(runUsageHistory);
+
+  // proxy-logs
+  usage
+    .command("proxy-logs")
+    .description(t("usage.proxy_logs.description"))
+    .option("--limit <n>", t("usage.proxy_logs.limit"), parseInt, 100)
+    .action(runUsageProxyLogs);
+}
+
+export async function runUsageAnalytics(opts, cmd) {
+  const globalOpts = cmd.optsWithGlobals();
+  const p = new URLSearchParams({ range: opts.period ?? "30d" });
+  if (opts.provider) p.set("provider", opts.provider);
+  const res = await fetchOrExit(`/api/usage/analytics?${p}`, globalOpts);
+  const data = await res.json();
+  const rows = toArray(data.byProvider ?? data.providers ?? []).map((r) => ({
+    provider: r.provider ?? r.providerId ?? "",
+    requests: r.totalRequests ?? r.requests ?? 0,
+    tokensIn: r.totalTokensIn ?? r.tokensIn ?? 0,
+    tokensOut: r.totalTokensOut ?? r.tokensOut ?? 0,
+    costUsd: r.totalCost ?? r.cost ?? r.costUsd ?? 0,
+  }));
+  emit(rows, globalOpts, analyticsSchema);
+}
+
+export async function runBudgetList(opts, cmd) {
+  const globalOpts = cmd.optsWithGlobals();
+  const res = await fetchOrExit("/api/usage/budget", globalOpts);
+  const data = await res.json();
+  const rows = normalizeBudgetRows(data);
+  emit(rows, globalOpts, budgetSchema);
+}
+
+export async function runBudgetGet(scope, opts, cmd) {
+  const globalOpts = cmd.optsWithGlobals();
+  const p = new URLSearchParams();
+  if (scope) p.set("scope", scope);
+  const res = await fetchOrExit(`/api/usage/budget?${p}`, globalOpts);
+  const data = await res.json();
+  const rows = normalizeBudgetRows(data);
+  emit(rows, globalOpts, budgetSchema);
+}
+
+export async function runBudgetSet(amount, opts, cmd) {
+  const globalOpts = cmd.optsWithGlobals();
+  const res = await apiFetch("/api/usage/budget", {
+    method: "POST",
+    body: {
+      amount: Number(amount),
+      scope: opts.scope ?? "global",
+      period: opts.period ?? "monthly",
+    },
+    timeout: globalOpts.timeout,
+    acceptNotOk: true,
+  });
+  if (!res.ok) {
+    const txt = await res.text().catch(() => "");
+    process.stderr.write(`[error] HTTP ${res.status}: ${txt.slice(0, 200)}\n`);
+    process.exit(res.exitCode ?? 1);
+  }
+  if (!globalOpts.quiet)
+    process.stdout.write(
+      `Budget set: $${Number(amount).toFixed(2)} / ${opts.scope ?? "global"} / ${opts.period ?? "monthly"}\n`
+    );
+}
+
+export async function runBudgetReset(scope, opts, cmd) {
+  const globalOpts = cmd.optsWithGlobals();
+  const res = await apiFetch("/api/usage/budget", {
+    method: "DELETE",
+    body: { scope: scope ?? "global" },
+    timeout: globalOpts.timeout,
+    acceptNotOk: true,
+  });
+  if (!res.ok) {
+    const txt = await res.text().catch(() => "");
+    process.stderr.write(`[error] HTTP ${res.status}: ${txt.slice(0, 200)}\n`);
+    process.exit(res.exitCode ?? 1);
+  }
+  if (!globalOpts.quiet) process.stdout.write(`Budget reset: ${scope ?? "global"}\n`);
+}
+
+export async function runUsageQuota(opts, cmd) {
+  const globalOpts = cmd.optsWithGlobals();
+  const p = new URLSearchParams();
+  if (opts.provider) p.set("provider", opts.provider);
+  if (opts.check) p.set("check", "true");
+  const res = await fetchOrExit(`/api/usage/quota?${p}`, globalOpts);
+  const data = await res.json();
+  const rows = toArray(data.providers ?? data.data ?? (Array.isArray(data) ? data : [])).map(
+    (r) => ({
+      provider: r.provider ?? r.providerId ?? "",
+      limit: r.limit ?? r.quota ?? r.maxTokens ?? null,
+      used: r.used ?? r.tokensUsed ?? null,
+      remaining: r.remaining ?? r.percentRemaining ?? null,
+      resetAt: r.resetAt ?? r.nextReset ?? null,
+      state: r.state ?? (r.percentRemaining > 0 ? "available" : "exhausted"),
+    })
+  );
+  emit(rows, globalOpts, quotaSchema);
+}
+
+export async function runUsageLogs(opts, cmd) {
+  const globalOpts = cmd.optsWithGlobals();
+
+  if (opts.follow) {
+    await followLogs(opts, globalOpts);
+    return;
+  }
+
+  const p = buildLogParams(opts);
+  const res = await fetchOrExit(`/api/usage/call-logs?${p}`, globalOpts);
+  const data = await res.json();
+  const rows = toLogRows(toArray(data.logs ?? data.items ?? data));
+  emit(rows, globalOpts, logsSchema);
+}
+
+export async function runUsageUtilization(opts, cmd) {
+  const globalOpts = cmd.optsWithGlobals();
+  const p = new URLSearchParams();
+  if (opts.apiKey) p.set("apiKey", opts.apiKey);
+  const res = await fetchOrExit(`/api/usage/utilization?${p}`, globalOpts);
+  const data = await res.json();
+  const rows = Array.isArray(data) ? data : toArray(data.data ?? data.items ?? [data]);
+  emit(rows, globalOpts, null);
+}
+
+export async function runUsageHistory(opts, cmd) {
+  const globalOpts = cmd.optsWithGlobals();
+  const p = new URLSearchParams({ limit: String(opts.limit ?? 100) });
+  const res = await fetchOrExit(`/api/usage/history?${p}`, globalOpts);
+  const data = await res.json();
+  const rows = toArray(data.items ?? data.history ?? (Array.isArray(data) ? data : []));
+  emit(rows, globalOpts, null);
+}
+
+export async function runUsageProxyLogs(opts, cmd) {
+  const globalOpts = cmd.optsWithGlobals();
+  const p = new URLSearchParams({ limit: String(opts?.limit ?? 100) });
+  const res = await fetchOrExit(`/api/usage/proxy-logs?${p}`, globalOpts);
+  const data = await res.json();
+  const rows = toArray(data.logs ?? data.items ?? (Array.isArray(data) ? data : []));
+  emit(rows, globalOpts, null);
+}
+
+async function followLogs(opts, globalOpts) {
+  let lastId = null;
+  process.stderr.write("[following logs — press Ctrl+C to stop]\n");
+  const sigint = () => process.exit(0);
+  process.on("SIGINT", sigint);
+  try {
+    while (true) {
+      const p = buildLogParams({ ...opts, limit: opts.limit ?? 20 });
+      if (lastId) p.append("afterId", String(lastId));
+      const res = await apiFetch(`/api/usage/call-logs?${p}`, {
+        timeout: globalOpts.timeout,
+        acceptNotOk: true,
+      });
+      if (res.ok) {
+        const data = await res.json();
+        const rows = toLogRows(toArray(data.logs ?? data.items ?? data));
+        if (rows.length > 0) {
+          emit(rows, { ...globalOpts, quiet: true }, logsSchema);
+          lastId = rows[rows.length - 1]?.id ?? lastId;
+        }
+      }
+      await sleep(2000);
+    }
+  } finally {
+    process.off("SIGINT", sigint);
+  }
+}
+
+function buildLogParams(opts) {
+  const p = new URLSearchParams({ limit: String(opts.limit ?? 100) });
+  if (opts.search) p.set("search", opts.search);
+  if (opts.since) p.set("since", opts.since);
+  if (opts.apiKey) p.set("apiKey", opts.apiKey);
+  return p;
+}
+
+function toLogRows(items) {
+  return items.map((r) => ({
+    id: r.id,
+    timestamp: r.createdAt ?? r.timestamp ?? r.ts,
+    apiKey: r.apiKey ?? r.keyId ?? r.apiKeyId,
+    method: r.method ?? "POST",
+    provider: r.provider ?? r.providerId,
+    model: r.model ?? r.modelId,
+    tokens: (r.tokensIn ?? r.promptTokens ?? 0) + (r.tokensOut ?? r.completionTokens ?? 0),
+    costUsd: r.cost ?? r.costUsd ?? r.totalCost,
+    latencyMs: r.latencyMs ?? r.durationMs,
+    status: r.status ?? r.statusCode,
+  }));
+}
+
+function normalizeBudgetRows(data) {
+  const items = toArray(data.budgets ?? data.items ?? (Array.isArray(data) ? data : [data]));
+  return items.map((r) => ({
+    scope: r.scope ?? r.scopeId ?? "global",
+    period: r.period ?? "monthly",
+    limit: r.limit ?? r.amount ?? 0,
+    used: r.used ?? r.spent ?? 0,
+    remaining: r.remaining ?? Math.max(0, (r.limit ?? 0) - (r.used ?? 0)),
+    pct: r.pct ?? (r.limit > 0 ? (r.used ?? 0) / r.limit : 0),
+  }));
+}
+
+async function fetchOrExit(path, globalOpts) {
+  const res = await apiFetch(path, { timeout: globalOpts.timeout, acceptNotOk: true });
+  if (!res.ok) {
+    if (res.status === 401 || res.status === 403) {
+      process.stderr.write(t("common.authRequired") + "\n");
+    } else {
+      process.stderr.write(t("common.serverOffline") + "\n");
+    }
+    process.exit(res.exitCode ?? 1);
+  }
+  return res;
+}
+
+function toArray(val) {
+  return Array.isArray(val) ? val : [];
+}
diff --git a/bin/cli/locales/en.json b/bin/cli/locales/en.json
index 9b2d38b33d..f090385c3e 100644
--- a/bin/cli/locales/en.json
+++ b/bin/cli/locales/en.json
@@ -70,6 +70,46 @@
       "empty_prompt": "Error: prompt is required (positional arg, --file, or --stdin)"
     }
   },
+  "usage": {
+    "description": "Usage analytics, budgets, quotas, and logs",
+    "analytics": {
+      "description": "Show aggregated usage analytics",
+      "period": "Time range: 1d|7d|30d|90d|ytd|all (default: 30d)",
+      "provider": "Filter by provider ID"
+    },
+    "budget": {
+      "description": "Manage cost budgets",
+      "set": {
+        "scope": "Budget scope (default: global)",
+        "period": "Budget period: daily|weekly|monthly (default: monthly)"
+      }
+    },
+    "quota": {
+      "description": "Show provider quota usage",
+      "provider": "Filter by provider ID",
+      "check": "Show whether quota is available for a new request"
+    },
+    "logs": {
+      "description": "Show request call logs",
+      "limit": "Number of log entries to return (default: 100)",
+      "search": "Search query to filter logs",
+      "since": "Return logs since this timestamp",
+      "follow": "Continuously tail new log entries",
+      "api_key": "Filter logs by API key"
+    },
+    "utilization": {
+      "description": "Show API key utilization metrics",
+      "api_key": "Filter by API key"
+    },
+    "history": {
+      "description": "Show request history",
+      "limit": "Number of history entries (default: 100)"
+    },
+    "proxy_logs": {
+      "description": "Show proxy-level request logs",
+      "limit": "Number of proxy log entries (default: 100)"
+    }
+  },
   "cost": {
     "description": "Show cost report with breakdown by provider, model, combo, or API key",
     "period": "Time range: 1d|7d|30d|90d|ytd|all (default: 30d)",
diff --git a/bin/cli/locales/pt-BR.json b/bin/cli/locales/pt-BR.json
index 0bfd8cf6df..9bd15feeb1 100644
--- a/bin/cli/locales/pt-BR.json
+++ b/bin/cli/locales/pt-BR.json
@@ -70,6 +70,46 @@
       "empty_prompt": "Erro: prompt obrigatório (argumento posicional, --file ou --stdin)"
     }
   },
+  "usage": {
+    "description": "Analytics de uso, budgets, quotas e logs",
+    "analytics": {
+      "description": "Exibir analytics de uso agregados",
+      "period": "Período: 1d|7d|30d|90d|ytd|all (padrão: 30d)",
+      "provider": "Filtrar por ID de provedor"
+    },
+    "budget": {
+      "description": "Gerenciar budgets de custo",
+      "set": {
+        "scope": "Escopo do budget (padrão: global)",
+        "period": "Período do budget: daily|weekly|monthly (padrão: monthly)"
+      }
+    },
+    "quota": {
+      "description": "Exibir uso de quota dos provedores",
+      "provider": "Filtrar por ID de provedor",
+      "check": "Mostrar se há quota disponível para uma nova requisição"
+    },
+    "logs": {
+      "description": "Exibir logs de chamadas",
+      "limit": "Número de entradas de log a retornar (padrão: 100)",
+      "search": "Filtro de busca",
+      "since": "Retornar logs a partir deste timestamp",
+      "follow": "Fazer tail contínuo de novos logs",
+      "api_key": "Filtrar logs por chave de API"
+    },
+    "utilization": {
+      "description": "Exibir métricas de utilização por chave de API",
+      "api_key": "Filtrar por chave de API"
+    },
+    "history": {
+      "description": "Exibir histórico de requisições",
+      "limit": "Número de entradas de histórico (padrão: 100)"
+    },
+    "proxy_logs": {
+      "description": "Exibir logs de requisições em nível de proxy",
+      "limit": "Número de entradas de proxy log (padrão: 100)"
+    }
+  },
   "cost": {
     "description": "Exibir relatório de custos com breakdown por provedor, modelo, combo ou chave de API",
     "period": "Período: 1d|7d|30d|90d|ytd|all (padrão: 30d)",
diff --git a/tests/unit/cli-usage.test.ts b/tests/unit/cli-usage.test.ts
new file mode 100644
index 0000000000..e0567b4b70
--- /dev/null
+++ b/tests/unit/cli-usage.test.ts
@@ -0,0 +1,219 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+
+const ANALYTICS_DATA = {
+  byProvider: [
+    {
+      provider: "openai",
+      totalRequests: 100,
+      totalTokensIn: 40000,
+      totalTokensOut: 16000,
+      totalCost: 0.35,
+    },
+    {
+      provider: "anthropic",
+      totalRequests: 50,
+      totalTokensIn: 20000,
+      totalTokensOut: 8000,
+      totalCost: 0.15,
+    },
+  ],
+};
+const BUDGET_DATA = {
+  budgets: [
+    { scope: "global", period: "monthly", limit: 100, used: 42.5, remaining: 57.5, pct: 0.425 },
+  ],
+};
+const QUOTA_DATA = {
+  providers: [
+    { provider: "openai", limit: 1000000, used: 500000, remaining: 500000, state: "available" },
+  ],
+};
+const LOGS_DATA = {
+  logs: [
+    {
+      id: "1",
+      createdAt: "2026-05-15T10:00:00Z",
+      apiKey: "sk-test-key",
+      provider: "openai",
+      model: "gpt-4o",
+      tokensIn: 100,
+      tokensOut: 50,
+      cost: 0.001,
+      latencyMs: 500,
+      status: 200,
+    },
+    {
+      id: "2",
+      createdAt: "2026-05-15T10:01:00Z",
+      apiKey: "sk-test-key",
+      provider: "anthropic",
+      model: "claude-3-5-sonnet",
+      tokensIn: 80,
+      tokensOut: 40,
+      cost: 0.0008,
+      latencyMs: 400,
+      status: 200,
+    },
+  ],
+};
+const UTILIZATION_DATA = [{ apiKey: "sk-test-key", requests: 150, cost: 0.5, avgLatency: 450 }];
+const HISTORY_DATA = { items: [{ id: "a", model: "gpt-4o", provider: "openai", cost: 0.01 }] };
+const PROXY_LOGS_DATA = {
+  logs: [{ id: "p1", path: "/v1/chat/completions", method: "POST", status: 200 }],
+};
+
+function makeResp(data: unknown, status = 200) {
+  const obj = {
+    ok: status < 400,
+    status,
+    exitCode: status < 400 ? 0 : 1,
+    json: () => Promise.resolve(data),
+    text: () => Promise.resolve(JSON.stringify(data)),
+    headers: new Headers(),
+  };
+  obj.json = obj.json.bind(obj);
+  obj.text = obj.text.bind(obj);
+  return obj;
+}
+
+function mockFetch(overrides: Record<string, unknown> = {}) {
+  return (url: string) => {
+    if (url.includes("/api/usage/analytics"))
+      return Promise.resolve(makeResp(overrides.analytics ?? ANALYTICS_DATA));
+    if (url.includes("/api/usage/budget"))
+      return Promise.resolve(makeResp(overrides.budget ?? BUDGET_DATA));
+    if (url.includes("/api/usage/quota"))
+      return Promise.resolve(makeResp(overrides.quota ?? QUOTA_DATA));
+    if (url.includes("/api/usage/call-logs"))
+      return Promise.resolve(makeResp(overrides.logs ?? LOGS_DATA));
+    if (url.includes("/api/usage/utilization"))
+      return Promise.resolve(makeResp(overrides.utilization ?? UTILIZATION_DATA));
+    if (url.includes("/api/usage/history"))
+      return Promise.resolve(makeResp(overrides.history ?? HISTORY_DATA));
+    if (url.includes("/api/usage/proxy-logs"))
+      return Promise.resolve(makeResp(overrides.proxyLogs ?? PROXY_LOGS_DATA));
+    return Promise.resolve(makeResp({}, 404));
+  };
+}
+
+async function captureStdout(fn: () => Promise<void>): Promise<string> {
+  const chunks: string[] = [];
+  const orig = process.stdout.write.bind(process.stdout);
+  process.stdout.write = (c: string | Uint8Array) => {
+    chunks.push(typeof c === "string" ? c : c.toString());
+    return true;
+  };
+  try {
+    await fn();
+  } finally {
+    process.stdout.write = orig;
+  }
+  return chunks.join("");
+}
+
+test("runUsageAnalytics exibe providers em json", async () => {
+  const origFetch = globalThis.fetch;
+  globalThis.fetch = mockFetch() as any;
+
+  const { runUsageAnalytics } = await import("../../bin/cli/commands/usage.mjs");
+  const cmd = { optsWithGlobals: () => ({ output: "json", quiet: true }) };
+  const out = await captureStdout(() => runUsageAnalytics({ period: "30d" }, cmd as any));
+
+  globalThis.fetch = origFetch;
+  const parsed = JSON.parse(out);
+  assert.ok(Array.isArray(parsed));
+  assert.equal(parsed[0].provider, "openai");
+  assert.ok(parsed[0].costUsd > 0);
+});
+
+test("runBudgetList exibe budgets", async () => {
+  const origFetch = globalThis.fetch;
+  globalThis.fetch = mockFetch() as any;
+
+  const { runBudgetList } = await import("../../bin/cli/commands/usage.mjs");
+  const cmd = { optsWithGlobals: () => ({ output: "json", quiet: true }) };
+  const out = await captureStdout(() => runBudgetList({}, cmd as any));
+
+  globalThis.fetch = origFetch;
+  const parsed = JSON.parse(out);
+  assert.ok(Array.isArray(parsed));
+  assert.equal(parsed[0].scope, "global");
+  assert.ok(parsed[0].limit > 0);
+});
+
+test("runUsageQuota exibe providers de quota", async () => {
+  const origFetch = globalThis.fetch;
+  globalThis.fetch = mockFetch() as any;
+
+  const { runUsageQuota } = await import("../../bin/cli/commands/usage.mjs");
+  const cmd = { optsWithGlobals: () => ({ output: "json", quiet: true }) };
+  const out = await captureStdout(() => runUsageQuota({}, cmd as any));
+
+  globalThis.fetch = origFetch;
+  const parsed = JSON.parse(out);
+  assert.ok(Array.isArray(parsed));
+  assert.equal(parsed[0].provider, "openai");
+});
+
+test("runUsageLogs exibe logs com mascaramento de API key", async () => {
+  const origFetch = globalThis.fetch;
+  globalThis.fetch = mockFetch() as any;
+
+  const { runUsageLogs } = await import("../../bin/cli/commands/usage.mjs");
+  const cmd = { optsWithGlobals: () => ({ output: "table", quiet: false }) };
+  const out = await captureStdout(() => runUsageLogs({ limit: 10 }, cmd as any));
+
+  globalThis.fetch = origFetch;
+  assert.ok(!out.includes("sk-test-key") || out.includes("***"));
+});
+
+test("runUsageLogs --output json retorna rows com campos esperados", async () => {
+  const origFetch = globalThis.fetch;
+  globalThis.fetch = mockFetch() as any;
+
+  const { runUsageLogs } = await import("../../bin/cli/commands/usage.mjs");
+  const cmd = { optsWithGlobals: () => ({ output: "json", quiet: true }) };
+  const out = await captureStdout(() => runUsageLogs({ limit: 10 }, cmd as any));
+
+  globalThis.fetch = origFetch;
+  const parsed = JSON.parse(out);
+  assert.ok(Array.isArray(parsed));
+  assert.equal(parsed.length, 2);
+  assert.ok(typeof parsed[0].provider === "string");
+  assert.ok(typeof parsed[0].tokens === "number");
+});
+
+test("runUsageHistory exibe histórico", async () => {
+  const origFetch = globalThis.fetch;
+  globalThis.fetch = mockFetch() as any;
+
+  const { runUsageHistory } = await import("../../bin/cli/commands/usage.mjs");
+  const cmd = { optsWithGlobals: () => ({ output: "json", quiet: true }) };
+  const out = await captureStdout(() => runUsageHistory({ limit: 50 }, cmd as any));
+
+  globalThis.fetch = origFetch;
+  const parsed = JSON.parse(out);
+  assert.ok(Array.isArray(parsed));
+  assert.ok(parsed.length >= 1);
+});
+
+test("runBudgetSet envia POST com amount, scope e period", async () => {
+  let capturedBody: unknown = null;
+  const origFetch = globalThis.fetch;
+  globalThis.fetch = ((url: string, init: any) => {
+    if (url.includes("/api/usage/budget") && init?.method === "POST") {
+      capturedBody = JSON.parse(init.body);
+    }
+    return Promise.resolve(makeResp({ ok: true }));
+  }) as any;
+
+  const { runBudgetSet } = await import("../../bin/cli/commands/usage.mjs");
+  const cmd = { optsWithGlobals: () => ({ output: "table", quiet: false }) };
+  await captureStdout(() => runBudgetSet("50", { scope: "global", period: "monthly" }, cmd as any));
+
+  globalThis.fetch = origFetch;
+  assert.ok(capturedBody !== null);
+  assert.equal((capturedBody as any).amount, 50);
+  assert.equal((capturedBody as any).scope, "global");
+});