diff --git a/TODO.md b/TODO.md
index 82fec9a..eb9d6cc 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1176,6 +1176,61 @@ Troncos, Discador > Lista de Bloqueio (agente.md secao 50-51, 41-42, 71,
       reconexão do socket.io real antes de fechar o stream, mas não há
       backoff exponencial nem um teste de queda de rede prolongada
 
+## PHASE 33 — Platform: Clientes > Tenants e Planos (CRUD real, backend
+novo) (agente.md secao 29, 56, 126, 141, 168)
+- [x] **Lacuna de backend fechada primeiro**: não existia NENHUM endpoint
+      pra criar/listar/editar tenant nem plano até aqui — só via script/
+      seed ad hoc (a própria Acme foi criada assim numa sessão anterior,
+      sem deixar rastro reproduzível). Dois controllers novos:
+      `TenantsController` (`/tenants`, `tenants.manage`/`.view`) e
+      `PlansController` (`/plans`, `pricing.manage`), ambos platform-only
+      (`isPlatformUser`, mesmo padrão de billing).
+- [x] `POST /tenants` cria o tenant **e** o primeiro usuário (Tenant
+      Admin) numa transação só (secao 141: sem esse usuário o tenant fica
+      inacessível) — `Tenant.create` + `User.create` + `TenantMembership`
+      + `UserRole(tenant_admin)`, senha gerada
+      (`generateStrongPassword`) e devolvida em texto puro só nesta
+      resposta (mesmo padrão de "revela uma vez" de Ramais/SIP).
+      `telephonyDomain` fixo em `b2bcall.local` (decisão já tomada na
+      PHASE 08 — sem multi-domínio real ainda).
+- [x] **Bug real, achado testando o próprio endpoint antes de expor no
+      frontend**: `GET /tenants` calculava `memberCount` com
+      `tenantMembership.groupBy` numa query sem contexto de tenant
+      nenhum — `tenant_memberships` tem FORCE RLS (secao 32), então
+      **nem platform admin** enxerga uma linha sequer sem
+      `app.current_tenant_id` setado; o campo sempre voltava `0`.
+      Corrigido abrindo o contexto de RLS de cada tenant um de cada vez
+      (`Promise.all` de `withTenantContext` por tenant) — aceitável numa
+      tela de administração, não é hot path.
+- [x] Frontend: `/platform/clientes/tenants` (lista com busca, badge de
+      status próprio — não reusa `StatusBadge`, mesma cautela de gênero
+      já aplicada em `AgentStateBadge`: "Ativo" de tenant não é "Ativa"
+      de campanha), `/tenants/new` (cria tenant+admin, revela senha
+      temporária uma vez), `/tenants/:id` (troca status/plano, mostra os
+      limites do plano selecionado ao vivo antes de salvar).
+      `/platform/clientes/planos` (cards com todos os limites, criar e
+      editar inline — campo de limite em branco = sem limite, nunca
+      zero).
+- [x] Testado ponta a ponta contra a API real: criado plano "Profissional"
+      (50 ramais/agentes, resto sem limite) → criado tenant "Beta Corp
+      Telecom LTDA" com admin `admin@beta.b2bcall.local`, senha revelada
+      uma vez → detalhe do tenant → trocado plano pra "Profissional" →
+      salvo → confirmado via API que persistiu (`GET /tenants/:id`
+      retornando o plano novo). Smoke test de regressão nas 19 telas do
+      tenant + tarifas, todas 200.
+- [ ] "Clientes > Assinaturas" e "> Quotas" continuam "em breve" —
+      `SubscriptionsController`/`PlanVersionsController` já existem
+      (PHASE 22) mas sem tela; Quotas ficou parcialmente coberta pelos
+      limites do plano já visíveis no detalhe do tenant, sem uma tela
+      dedicada de consumo-vs-limite ainda
+      (esperando **Billing > Consumo**, que depende do mesmo seletor de
+      tenant)
+- [ ] Sem exclusão/soft-delete de tenant nem de plano pela UI (só
+      suspender via status) — decisão deliberada, mesma cautela de
+      qualquer ação destrutiva em dado de cliente real
+- [ ] `Plan.key` não pode ser editado depois de criado (só os limites) —
+      não implementado, `key` normalmente não deveria mudar mesmo
+
 ---
 
 ## Riscos conhecidos
diff --git a/apps/api/src/app.module.ts b/apps/api/src/app.module.ts
index f98fccc..416b92d 100644
--- a/apps/api/src/app.module.ts
+++ b/apps/api/src/app.module.ts
@@ -20,6 +20,8 @@ import { AIModule } from "./ai/ai.module";
 import { QualityModule } from "./quality/quality.module";
 import { PlatformModule } from "./platform/platform.module";
 import { BillingModule } from "./billing/billing.module";
+import { TenantsModule } from "./tenants/tenants.module";
+import { PlansModule } from "./plans/plans.module";
 
 @Module({
   imports: [
@@ -44,6 +46,8 @@ import { BillingModule } from "./billing/billing.module";
     QualityModule,
     PlatformModule,
     BillingModule,
+    TenantsModule,
+    PlansModule,
   ],
 })
 export class AppModule {}
diff --git a/apps/api/src/plans/dto/create-plan.dto.ts b/apps/api/src/plans/dto/create-plan.dto.ts
new file mode 100644
index 0000000..fc7d7f4
--- /dev/null
+++ b/apps/api/src/plans/dto/create-plan.dto.ts
@@ -0,0 +1,169 @@
+import { IsBoolean, IsInt, IsOptional, IsString, Matches, MaxLength, Min } from "class-validator";
+
+export class CreatePlanDto {
+  @IsString()
+  @MaxLength(40)
+  @Matches(/^[a-z0-9_-]+$/, { message: "key deve ser minusculo, so letras/numeros/hifen/underscore" })
+  key!: string;
+
+  @IsString()
+  @MaxLength(120)
+  name!: string;
+
+  @IsOptional()
+  @IsInt()
+  @Min(0)
+  maxExtensions?: number;
+
+  @IsOptional()
+  @IsInt()
+  @Min(0)
+  maxAgents?: number;
+
+  @IsOptional()
+  @IsInt()
+  @Min(0)
+  maxTrunks?: number;
+
+  @IsOptional()
+  @IsInt()
+  @Min(0)
+  maxQueues?: number;
+
+  @IsOptional()
+  @IsInt()
+  @Min(0)
+  maxCampaigns?: number;
+
+  @IsOptional()
+  @IsInt()
+  @Min(0)
+  maxCps?: number;
+
+  @IsOptional()
+  @IsInt()
+  @Min(0)
+  maxConcurrentCalls?: number;
+
+  @IsOptional()
+  @IsInt()
+  @Min(0)
+  maxDailyCalls?: number;
+
+  @IsOptional()
+  @IsInt()
+  @Min(0)
+  maxMonthlyCalls?: number;
+
+  @IsOptional()
+  @IsInt()
+  @Min(0)
+  maxRecordingStorageGb?: number;
+
+  @IsOptional()
+  @IsInt()
+  @Min(0)
+  recordingRetentionDays?: number;
+
+  @IsOptional()
+  @IsInt()
+  @Min(0)
+  transcriptionRetentionDays?: number;
+
+  @IsOptional()
+  @IsBoolean()
+  recordingEnabled?: boolean;
+
+  @IsOptional()
+  @IsBoolean()
+  aiEnabled?: boolean;
+
+  @IsOptional()
+  @IsBoolean()
+  aiTranscriptionEnabled?: boolean;
+
+  @IsOptional()
+  @IsBoolean()
+  aiAnalysisEnabled?: boolean;
+
+  @IsOptional()
+  @IsBoolean()
+  apiAccessEnabled?: boolean;
+}
+
+export class UpdatePlanDto {
+  @IsOptional()
+  @IsString()
+  @MaxLength(120)
+  name?: string;
+
+  @IsOptional()
+  @IsInt()
+  @Min(0)
+  maxExtensions?: number;
+
+  @IsOptional()
+  @IsInt()
+  @Min(0)
+  maxAgents?: number;
+
+  @IsOptional()
+  @IsInt()
+  @Min(0)
+  maxTrunks?: number;
+
+  @IsOptional()
+  @IsInt()
+  @Min(0)
+  maxQueues?: number;
+
+  @IsOptional()
+  @IsInt()
+  @Min(0)
+  maxCampaigns?: number;
+
+  @IsOptional()
+  @IsInt()
+  @Min(0)
+  maxCps?: number;
+
+  @IsOptional()
+  @IsInt()
+  @Min(0)
+  maxConcurrentCalls?: number;
+
+  @IsOptional()
+  @IsInt()
+  @Min(0)
+  maxDailyCalls?: number;
+
+  @IsOptional()
+  @IsInt()
+  @Min(0)
+  maxMonthlyCalls?: number;
+
+  @IsOptional()
+  @IsInt()
+  @Min(0)
+  maxRecordingStorageGb?: number;
+
+  @IsOptional()
+  @IsBoolean()
+  recordingEnabled?: boolean;
+
+  @IsOptional()
+  @IsBoolean()
+  aiEnabled?: boolean;
+
+  @IsOptional()
+  @IsBoolean()
+  aiTranscriptionEnabled?: boolean;
+
+  @IsOptional()
+  @IsBoolean()
+  aiAnalysisEnabled?: boolean;
+
+  @IsOptional()
+  @IsBoolean()
+  apiAccessEnabled?: boolean;
+}
diff --git a/apps/api/src/plans/plans.controller.ts b/apps/api/src/plans/plans.controller.ts
new file mode 100644
index 0000000..f595a8f
--- /dev/null
+++ b/apps/api/src/plans/plans.controller.ts
@@ -0,0 +1,87 @@
+import { Body, Controller, ForbiddenException, Get, NotFoundException, Param, Patch, Post, UseGuards } from "@nestjs/common";
+import { getPrismaClient } from "@b2bcall/database";
+import { recordAuditEvent, isPlatformUser, type AccessTokenClaims } from "@b2bcall/auth";
+import { JwtAuthGuard } from "../common/guards/jwt-auth.guard";
+import { PermissionGuard } from "../common/guards/permission.guard";
+import { RequirePermission } from "../common/decorators/require-permission.decorator";
+import { CurrentUser } from "../common/decorators/current-user.decorator";
+import { CreatePlanDto, UpdatePlanDto } from "./dto/create-plan.dto";
+
+/**
+ * Catálogo de planos (agente.md secao 56, 126) — global, sem RLS (mesmo
+ * critério de `plans` desde a PHASE 14: "sem tenant_id, catálogo
+ * compartilhado"). Só platform admin gerencia; qualquer campo de limite
+ * `null` significa "sem limite" (nunca "sem plano" — `Tenant.planId` é
+ * obrigatório desde a migration que fez o backfill).
+ */
+@UseGuards(JwtAuthGuard, PermissionGuard)
+@Controller("plans")
+export class PlansController {
+  @RequirePermission("pricing.manage")
+  @Post()
+  async create(@CurrentUser() user: AccessTokenClaims, @Body() dto: CreatePlanDto) {
+    if (!(await isPlatformUser(user.sub))) {
+      throw new ForbiddenException("So' um usuario com role de plataforma pode criar planos");
+    }
+    const prisma = getPrismaClient();
+
+    const existing = await prisma.plan.findUnique({ where: { key: dto.key } });
+    if (existing) {
+      throw new ForbiddenException(`Ja existe um plano com key "${dto.key}"`);
+    }
+
+    const plan = await prisma.plan.create({ data: dto });
+
+    await recordAuditEvent(prisma, {
+      action: "PLAN_CREATE",
+      tenantId: null,
+      userId: user.sub,
+      entityType: "plan",
+      entityId: plan.id,
+      after: { key: plan.key, name: plan.name },
+    });
+
+    return plan;
+  }
+
+  @RequirePermission("pricing.manage")
+  @Get()
+  async list() {
+    const prisma = getPrismaClient();
+    return prisma.plan.findMany({ orderBy: { name: "asc" } });
+  }
+
+  @RequirePermission("pricing.manage")
+  @Get(":id")
+  async get(@Param("id") id: string) {
+    const prisma = getPrismaClient();
+    const plan = await prisma.plan.findUnique({ where: { id } });
+    if (!plan) throw new NotFoundException();
+    return plan;
+  }
+
+  @RequirePermission("pricing.manage")
+  @Patch(":id")
+  async update(@CurrentUser() user: AccessTokenClaims, @Param("id") id: string, @Body() dto: UpdatePlanDto) {
+    if (!(await isPlatformUser(user.sub))) {
+      throw new ForbiddenException("So' um usuario com role de plataforma pode editar planos");
+    }
+    const prisma = getPrismaClient();
+
+    const existing = await prisma.plan.findUnique({ where: { id } });
+    if (!existing) throw new NotFoundException();
+
+    const plan = await prisma.plan.update({ where: { id }, data: dto });
+
+    await recordAuditEvent(prisma, {
+      action: "PLAN_UPDATE",
+      tenantId: null,
+      userId: user.sub,
+      entityType: "plan",
+      entityId: plan.id,
+      after: { ...dto },
+    });
+
+    return plan;
+  }
+}
diff --git a/apps/api/src/plans/plans.module.ts b/apps/api/src/plans/plans.module.ts
new file mode 100644
index 0000000..b20fe07
--- /dev/null
+++ b/apps/api/src/plans/plans.module.ts
@@ -0,0 +1,7 @@
+import { Module } from "@nestjs/common";
+import { PlansController } from "./plans.controller";
+
+@Module({
+  controllers: [PlansController],
+})
+export class PlansModule {}
diff --git a/apps/api/src/tenants/dto/create-tenant.dto.ts b/apps/api/src/tenants/dto/create-tenant.dto.ts
new file mode 100644
index 0000000..c9daa48
--- /dev/null
+++ b/apps/api/src/tenants/dto/create-tenant.dto.ts
@@ -0,0 +1,53 @@
+import { IsEmail, IsIn, IsOptional, IsString, IsUUID, Matches, MaxLength } from "class-validator";
+
+const TENANT_STATUSES = ["TRIAL", "ACTIVE", "SUSPENDED", "PAST_DUE", "CANCELLED"];
+
+export class CreateTenantDto {
+  @IsString()
+  @MaxLength(40)
+  @Matches(/^[a-z0-9-]+$/, { message: "code deve ser minusculo, so letras/numeros/hifen (vira tambem o slug)" })
+  code!: string;
+
+  @IsString()
+  @MaxLength(200)
+  legalName!: string;
+
+  @IsOptional()
+  @IsString()
+  @MaxLength(200)
+  tradeName?: string;
+
+  @IsOptional()
+  @IsString()
+  @MaxLength(40)
+  taxId?: string;
+
+  @IsUUID()
+  planId!: string;
+
+  /** Cria o primeiro usuário (tenant_admin) na mesma transação — sem essa
+   * conta o tenant fica inacessível (secao 141: "Tenant Admin é criado
+   * junto com o tenant"). Senha gerada e devolvida uma única vez, mesmo
+   * padrão de `SecretReveal` já usado pra senha SIP de ramal. */
+  @IsEmail()
+  adminEmail!: string;
+
+  @IsString()
+  @MaxLength(120)
+  adminName!: string;
+}
+
+export class UpdateTenantDto {
+  @IsOptional()
+  @IsIn(TENANT_STATUSES)
+  status?: string;
+
+  @IsOptional()
+  @IsUUID()
+  planId?: string;
+
+  @IsOptional()
+  @IsString()
+  @MaxLength(200)
+  tradeName?: string;
+}
diff --git a/apps/api/src/tenants/tenants.controller.ts b/apps/api/src/tenants/tenants.controller.ts
new file mode 100644
index 0000000..86b6a72
--- /dev/null
+++ b/apps/api/src/tenants/tenants.controller.ts
@@ -0,0 +1,163 @@
+import { Body, Controller, ForbiddenException, Get, NotFoundException, Param, Patch, Post, UseGuards } from "@nestjs/common";
+import { getPrismaClient, withTenantContext, type TenantStatus } from "@b2bcall/database";
+import { recordAuditEvent, isPlatformUser, hashPassword, type AccessTokenClaims } from "@b2bcall/auth";
+import { generateStrongPassword } from "@b2bcall/shared";
+import { JwtAuthGuard } from "../common/guards/jwt-auth.guard";
+import { PermissionGuard } from "../common/guards/permission.guard";
+import { RequirePermission } from "../common/decorators/require-permission.decorator";
+import { CurrentUser } from "../common/decorators/current-user.decorator";
+import { CreateTenantDto, UpdateTenantDto } from "./dto/create-tenant.dto";
+
+/**
+ * CRUD de tenants (agente.md secao 29, 141, 168 "Clientes > Tenants") —
+ * a peça que faltava desde a PHASE 01: até aqui só existia via script/API
+ * direto. `tenants` não tem RLS (tabela raiz, ver docs/TENANT_ISOLATION.md),
+ * então lida direto com `getPrismaClient()`, nunca `withTenantContext`.
+ *
+ * `telephonyDomain` fixo em "b2bcall.local" pra todo tenant novo — decisão
+ * já tomada na PHASE 08 (multi-domínio real por tenant não existe ainda).
+ */
+@UseGuards(JwtAuthGuard, PermissionGuard)
+@Controller("tenants")
+export class TenantsController {
+  @RequirePermission("tenants.manage")
+  @Post()
+  async create(@CurrentUser() user: AccessTokenClaims, @Body() dto: CreateTenantDto) {
+    if (!(await isPlatformUser(user.sub))) {
+      throw new ForbiddenException("So' um usuario com role de plataforma pode criar tenants");
+    }
+    const prisma = getPrismaClient();
+
+    const [existingCode, existingEmail, plan] = await Promise.all([
+      prisma.tenant.findFirst({ where: { code: dto.code } }),
+      prisma.user.findUnique({ where: { email: dto.adminEmail } }),
+      prisma.plan.findUnique({ where: { id: dto.planId } }),
+    ]);
+    if (existingCode) throw new ForbiddenException(`Ja existe um tenant com code "${dto.code}"`);
+    if (existingEmail) throw new ForbiddenException(`Ja existe um usuario com o e-mail "${dto.adminEmail}"`);
+    if (!plan) throw new ForbiddenException("Plano nao encontrado");
+
+    const temporaryPassword = generateStrongPassword();
+    const passwordHash = await hashPassword(temporaryPassword);
+
+    const { tenant, admin } = await prisma.$transaction(async (tx) => {
+      const tenant = await tx.tenant.create({
+        data: {
+          code: dto.code,
+          slug: dto.code,
+          legalName: dto.legalName,
+          tradeName: dto.tradeName,
+          taxId: dto.taxId,
+          planId: dto.planId,
+          telephonyDomain: "b2bcall.local",
+        },
+      });
+
+      const admin = await tx.user.create({
+        data: { email: dto.adminEmail, passwordHash, name: dto.adminName, mustChangePassword: true },
+      });
+
+      // RLS de tenant_memberships (secao 32) exige app.current_tenant_id —
+      // já dentro da mesma transação, sem precisar de withTenantContext
+      // (que abriria uma transação aninhada em cima de um PrismaClient
+      // plano, não de um TransactionClient).
+      await tx.$executeRaw`SELECT set_config('app.current_tenant_id', ${tenant.id}, true)`;
+      await tx.tenantMembership.create({ data: { tenantId: tenant.id, userId: admin.id } });
+
+      const tenantAdminRole = await tx.role.findUniqueOrThrow({ where: { key: "tenant_admin" } });
+      await tx.userRole.create({ data: { userId: admin.id, roleId: tenantAdminRole.id, tenantId: tenant.id } });
+
+      return { tenant, admin };
+    });
+
+    await recordAuditEvent(prisma, {
+      action: "TENANT_CREATE",
+      tenantId: tenant.id,
+      userId: user.sub,
+      entityType: "tenant",
+      entityId: tenant.id,
+      after: { code: tenant.code, legalName: tenant.legalName, planId: tenant.planId, adminEmail: admin.email },
+    });
+
+    return { tenant, admin: { email: admin.email, temporaryPassword } };
+  }
+
+  @RequirePermission("tenants.view")
+  @Get()
+  async list(@CurrentUser() user: AccessTokenClaims) {
+    if (!(await isPlatformUser(user.sub))) {
+      throw new ForbiddenException("So' um usuario com role de plataforma pode listar tenants");
+    }
+    const prisma = getPrismaClient();
+    const tenants = await prisma.tenant.findMany({
+      where: { deletedAt: null },
+      include: { plan: { select: { id: true, key: true, name: true } } },
+      orderBy: { createdAt: "desc" },
+    });
+
+    // `tenant_memberships` tem FORCE RLS — nem platform admin enxerga
+    // linha nenhuma numa query sem `app.current_tenant_id` setado (deny-
+    // by-default, secao 32). Sem uma policy própria pra platform admin
+    // "ver tudo", a única forma correta é abrir o contexto de cada tenant
+    // um de cada vez — aceitável aqui, é uma tela de administração, não
+    // um hot path.
+    const memberCounts = await Promise.all(
+      tenants.map((t) => withTenantContext(prisma, t.id, (tx) => tx.tenantMembership.count({ where: { tenantId: t.id } }))),
+    );
+    const memberCount = new Map(tenants.map((t, i) => [t.id, memberCounts[i]]));
+    return tenants.map((t) => ({ ...t, memberCount: memberCount.get(t.id) ?? 0 }));
+  }
+
+  @RequirePermission("tenants.view")
+  @Get(":id")
+  async get(@CurrentUser() user: AccessTokenClaims, @Param("id") id: string) {
+    if (!(await isPlatformUser(user.sub))) {
+      throw new ForbiddenException("So' um usuario com role de plataforma pode ver detalhe de tenant");
+    }
+    const prisma = getPrismaClient();
+    const tenant = await prisma.tenant.findFirst({
+      where: { id, deletedAt: null },
+      include: { plan: true },
+    });
+    if (!tenant) throw new NotFoundException();
+    return tenant;
+  }
+
+  @RequirePermission("tenants.manage")
+  @Patch(":id")
+  async update(@CurrentUser() user: AccessTokenClaims, @Param("id") id: string, @Body() dto: UpdateTenantDto) {
+    if (!(await isPlatformUser(user.sub))) {
+      throw new ForbiddenException("So' um usuario com role de plataforma pode editar tenants");
+    }
+    const prisma = getPrismaClient();
+
+    const existing = await prisma.tenant.findFirst({ where: { id, deletedAt: null } });
+    if (!existing) throw new NotFoundException();
+
+    if (dto.planId) {
+      const plan = await prisma.plan.findUnique({ where: { id: dto.planId } });
+      if (!plan) throw new ForbiddenException("Plano nao encontrado");
+    }
+
+    const tenant = await prisma.tenant.update({
+      where: { id },
+      data: {
+        ...(dto.status ? { status: dto.status as TenantStatus } : {}),
+        ...(dto.planId ? { planId: dto.planId } : {}),
+        ...(dto.tradeName !== undefined ? { tradeName: dto.tradeName } : {}),
+      },
+      include: { plan: true },
+    });
+
+    await recordAuditEvent(prisma, {
+      action: "TENANT_UPDATE",
+      tenantId: tenant.id,
+      userId: user.sub,
+      entityType: "tenant",
+      entityId: tenant.id,
+      after: { ...dto },
+    });
+
+    return tenant;
+  }
+}
diff --git a/apps/api/src/tenants/tenants.module.ts b/apps/api/src/tenants/tenants.module.ts
new file mode 100644
index 0000000..c479e79
--- /dev/null
+++ b/apps/api/src/tenants/tenants.module.ts
@@ -0,0 +1,7 @@
+import { Module } from "@nestjs/common";
+import { TenantsController } from "./tenants.controller";
+
+@Module({
+  controllers: [TenantsController],
+})
+export class TenantsModule {}
diff --git a/apps/frontend/.impeccable/review/platform-planos-empty-desktop.png b/apps/frontend/.impeccable/review/platform-planos-empty-desktop.png
new file mode 100644
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diff --git a/apps/frontend/src/app/platform/clientes/planos/actions.ts b/apps/frontend/src/app/platform/clientes/planos/actions.ts
new file mode 100644
index 0000000..8e292db
--- /dev/null
+++ b/apps/frontend/src/app/platform/clientes/planos/actions.ts
@@ -0,0 +1,70 @@
+"use server";
+
+import { revalidatePath } from "next/cache";
+import { requireSession } from "@/lib/session";
+import { apiFetch, ApiError } from "@/lib/api";
+import type { Plan } from "@/lib/platform-types";
+
+function extractErrorMessage(err: unknown): string {
+  if (err instanceof ApiError) {
+    try {
+      const parsed = JSON.parse(err.message);
+      if (Array.isArray(parsed.message)) return parsed.message.join(" ");
+      if (typeof parsed.message === "string") return parsed.message;
+    } catch {
+      // corpo não era JSON
+    }
+    return err.message || "Falha inesperada na API.";
+  }
+  return "Falha inesperada. Tente novamente.";
+}
+
+export type PlanLimitsInput = Partial<
+  Pick<
+    Plan,
+    | "maxExtensions"
+    | "maxAgents"
+    | "maxTrunks"
+    | "maxQueues"
+    | "maxCampaigns"
+    | "maxCps"
+    | "maxConcurrentCalls"
+    | "maxDailyCalls"
+    | "maxMonthlyCalls"
+    | "maxRecordingStorageGb"
+    | "recordingEnabled"
+    | "aiEnabled"
+    | "aiTranscriptionEnabled"
+    | "aiAnalysisEnabled"
+  >
+>;
+
+export interface CreatePlanInput extends PlanLimitsInput {
+  key: string;
+  name: string;
+}
+
+export async function createPlan(input: CreatePlanInput): Promise<{ ok: true; plan: Plan } | { ok: false; error: string }> {
+  const session = await requireSession();
+  try {
+    const plan = await apiFetch<Plan>("/plans", session.accessToken, { method: "POST", body: JSON.stringify(input) });
+    revalidatePath("/platform/clientes/planos");
+    return { ok: true, plan };
+  } catch (err) {
+    return { ok: false, error: extractErrorMessage(err) };
+  }
+}
+
+export async function updatePlan(
+  id: string,
+  input: PlanLimitsInput & { name?: string },
+): Promise<{ ok: true; plan: Plan } | { ok: false; error: string }> {
+  const session = await requireSession();
+  try {
+    const plan = await apiFetch<Plan>(`/plans/${id}`, session.accessToken, { method: "PATCH", body: JSON.stringify(input) });
+    revalidatePath("/platform/clientes/planos");
+    return { ok: true, plan };
+  } catch (err) {
+    return { ok: false, error: extractErrorMessage(err) };
+  }
+}
diff --git a/apps/frontend/src/app/platform/clientes/planos/page.tsx b/apps/frontend/src/app/platform/clientes/planos/page.tsx
new file mode 100644
index 0000000..e91fc6b
--- /dev/null
+++ b/apps/frontend/src/app/platform/clientes/planos/page.tsx
@@ -0,0 +1,10 @@
+import { requireSession } from "@/lib/session";
+import { apiFetch } from "@/lib/api";
+import type { Plan } from "@/lib/platform-types";
+import { PlanosView } from "./planos-view";
+
+export default async function PlanosPage() {
+  const session = await requireSession();
+  const plans = await apiFetch<Plan[]>("/plans", session.accessToken);
+  return <PlanosView plans={plans} />;
+}
diff --git a/apps/frontend/src/app/platform/clientes/planos/planos-view.tsx b/apps/frontend/src/app/platform/clientes/planos/planos-view.tsx
new file mode 100644
index 0000000..2bece85
--- /dev/null
+++ b/apps/frontend/src/app/platform/clientes/planos/planos-view.tsx
@@ -0,0 +1,260 @@
+"use client";
+
+import { useState, useTransition } from "react";
+import { useRouter } from "next/navigation";
+import { CreditCard, Plus, X } from "lucide-react";
+import { Panel, PanelHeader } from "@/components/ui/panel";
+import { Button } from "@/components/ui/button";
+import { Input, FieldLabel } from "@/components/ui/input";
+import { Pill } from "@/components/ui/pill";
+import { EmptyState } from "@/components/ui/table";
+import { PLAN_LIMIT_FIELDS, type Plan } from "@/lib/platform-types";
+import { createPlan, updatePlan, type PlanLimitsInput } from "./actions";
+
+type LimitsState = Record<string, string>;
+
+function limitsToState(plan?: Plan): LimitsState {
+  const state: LimitsState = {};
+  for (const { key } of PLAN_LIMIT_FIELDS) {
+    state[key] = plan?.[key] == null ? "" : String(plan[key]);
+  }
+  return state;
+}
+
+function limitsToInput(state: LimitsState): PlanLimitsInput {
+  const input: PlanLimitsInput = {};
+  for (const { key } of PLAN_LIMIT_FIELDS) {
+    const raw = state[key];
+    (input as Record<string, number | undefined>)[key] = raw.trim() === "" ? undefined : Number(raw);
+  }
+  return input;
+}
+
+export function PlanosView({ plans }: { plans: Plan[] }) {
+  const [showForm, setShowForm] = useState(false);
+
+  return (
+    <div className="space-y-5">
+      <div className="flex flex-wrap items-start justify-between gap-3">
+        <div>
+          <h1 className="text-lg font-semibold text-foreground">Planos</h1>
+          <p className="mt-1 max-w-2xl text-sm text-muted-foreground">
+            Catálogo de planos (agente.md secao 56, 126) — campo de limite em branco significa{" "}
+            <strong>sem limite</strong>, nunca zero.
+          </p>
+        </div>
+        <Button type="button" onClick={() => setShowForm((s) => !s)}>
+          {showForm ? <X className="h-4 w-4" aria-hidden /> : <Plus className="h-4 w-4" aria-hidden />}
+          {showForm ? "Cancelar" : "Novo plano"}
+        </Button>
+      </div>
+
+      {showForm && <NewPlanForm onDone={() => setShowForm(false)} />}
+
+      {plans.length === 0 ? (
+        <Panel>
+          <EmptyState title="Nenhum plano cadastrado ainda" description="Crie o primeiro plano da plataforma." />
+        </Panel>
+      ) : (
+        <div className="space-y-4">
+          {plans.map((plan) => (
+            <PlanCard key={plan.id} plan={plan} />
+          ))}
+        </div>
+      )}
+    </div>
+  );
+}
+
+function LimitFields({ state, onChange, disabled }: { state: LimitsState; onChange: (key: string, value: string) => void; disabled: boolean }) {
+  return (
+    <div className="grid grid-cols-2 gap-3 sm:grid-cols-5">
+      {PLAN_LIMIT_FIELDS.map(({ key, label }) => (
+        <div key={key}>
+          <FieldLabel htmlFor={`pl-${key}`}>{label}</FieldLabel>
+          <Input
+            id={`pl-${key}`}
+            type="number"
+            min={0}
+            value={state[key]}
+            onChange={(e) => onChange(key, e.target.value)}
+            placeholder="sem limite"
+            disabled={disabled}
+          />
+        </div>
+      ))}
+    </div>
+  );
+}
+
+function FlagToggle({ label, checked, onChange, disabled }: { label: string; checked: boolean; onChange: (v: boolean) => void; disabled: boolean }) {
+  return (
+    <label className="flex items-center gap-2 text-sm text-foreground">
+      <input
+        type="checkbox"
+        checked={checked}
+        onChange={(e) => onChange(e.target.checked)}
+        disabled={disabled}
+        className="h-4 w-4 rounded border-input text-primary focus-visible:ring-2 focus-visible:ring-ring"
+      />
+      {label}
+    </label>
+  );
+}
+
+function NewPlanForm({ onDone }: { onDone: () => void }) {
+  const [key, setKey] = useState("");
+  const [name, setName] = useState("");
+  const [limits, setLimits] = useState<LimitsState>(() => limitsToState());
+  const [recordingEnabled, setRecordingEnabled] = useState(true);
+  const [aiEnabled, setAiEnabled] = useState(false);
+  const [aiTranscriptionEnabled, setAiTranscriptionEnabled] = useState(false);
+  const [aiAnalysisEnabled, setAiAnalysisEnabled] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+  const [pending, startTransition] = useTransition();
+
+  function onSubmit(e: React.FormEvent) {
+    e.preventDefault();
+    setError(null);
+    if (!/^[a-z0-9_-]+$/.test(key) || !name.trim()) {
+      setError("Key (minúsculo) e nome são obrigatórios.");
+      return;
+    }
+    startTransition(async () => {
+      const result = await createPlan({
+        key,
+        name: name.trim(),
+        ...limitsToInput(limits),
+        recordingEnabled,
+        aiEnabled,
+        aiTranscriptionEnabled,
+        aiAnalysisEnabled,
+      });
+      if (!result.ok) {
+        setError(result.error);
+        return;
+      }
+      onDone();
+    });
+  }
+
+  return (
+    <Panel className="p-5">
+      <form onSubmit={onSubmit} noValidate className="space-y-4">
+        <div className="grid grid-cols-1 gap-4 sm:grid-cols-2">
+          <div>
+            <FieldLabel htmlFor="pl-key">Key</FieldLabel>
+            <Input id="pl-key" value={key} onChange={(e) => setKey(e.target.value.toLowerCase())} placeholder="ex.: pro" className="font-mono" disabled={pending} />
+          </div>
+          <div>
+            <FieldLabel htmlFor="pl-name">Nome</FieldLabel>
+            <Input id="pl-name" value={name} onChange={(e) => setName(e.target.value)} placeholder="Ex.: Profissional" disabled={pending} />
+          </div>
+        </div>
+
+        <LimitFields state={limits} onChange={(k, v) => setLimits((prev) => ({ ...prev, [k]: v }))} disabled={pending} />
+
+        <div className="flex flex-wrap gap-4">
+          <FlagToggle label="Gravação habilitada" checked={recordingEnabled} onChange={setRecordingEnabled} disabled={pending} />
+          <FlagToggle label="IA habilitada" checked={aiEnabled} onChange={setAiEnabled} disabled={pending} />
+          <FlagToggle label="IA — transcrição" checked={aiTranscriptionEnabled} onChange={setAiTranscriptionEnabled} disabled={pending} />
+          <FlagToggle label="IA — análise" checked={aiAnalysisEnabled} onChange={setAiAnalysisEnabled} disabled={pending} />
+        </div>
+
+        {error && (
+          <p role="alert" className="rounded-md border border-destructive/30 bg-destructive/10 px-3 py-2 text-sm text-destructive">
+            {error}
+          </p>
+        )}
+        <div className="flex justify-end">
+          <Button type="submit" disabled={pending}>
+            {pending ? "Criando…" : "Criar plano"}
+          </Button>
+        </div>
+      </form>
+    </Panel>
+  );
+}
+
+function PlanCard({ plan }: { plan: Plan }) {
+  const router = useRouter();
+  const [editing, setEditing] = useState(false);
+  const [limits, setLimits] = useState<LimitsState>(() => limitsToState(plan));
+  const [recordingEnabled, setRecordingEnabled] = useState(plan.recordingEnabled);
+  const [aiEnabled, setAiEnabled] = useState(plan.aiEnabled);
+  const [aiTranscriptionEnabled, setAiTranscriptionEnabled] = useState(plan.aiTranscriptionEnabled);
+  const [aiAnalysisEnabled, setAiAnalysisEnabled] = useState(plan.aiAnalysisEnabled);
+  const [error, setError] = useState<string | null>(null);
+  const [pending, startTransition] = useTransition();
+
+  function onSave() {
+    setError(null);
+    startTransition(async () => {
+      const result = await updatePlan(plan.id, {
+        ...limitsToInput(limits),
+        recordingEnabled,
+        aiEnabled,
+        aiTranscriptionEnabled,
+        aiAnalysisEnabled,
+      });
+      if (!result.ok) {
+        setError(result.error);
+        return;
+      }
+      setEditing(false);
+      router.refresh();
+    });
+  }
+
+  return (
+    <Panel>
+      <div className="flex flex-wrap items-center justify-between gap-3 border-b border-border px-5 py-4">
+        <div className="flex items-center gap-2">
+          <CreditCard className="h-4 w-4 text-muted-foreground" aria-hidden />
+          <h2 className="text-sm font-semibold text-foreground">{plan.name}</h2>
+          <Pill>{plan.key}</Pill>
+        </div>
+        {!editing && (
+          <Button type="button" variant="outline" size="sm" onClick={() => setEditing(true)}>
+            Editar
+          </Button>
+        )}
+      </div>
+      <div className="p-5">
+        {editing ? (
+          <div className="space-y-4">
+            <LimitFields state={limits} onChange={(k, v) => setLimits((prev) => ({ ...prev, [k]: v }))} disabled={pending} />
+            <div className="flex flex-wrap gap-4">
+              <FlagToggle label="Gravação habilitada" checked={recordingEnabled} onChange={setRecordingEnabled} disabled={pending} />
+              <FlagToggle label="IA habilitada" checked={aiEnabled} onChange={setAiEnabled} disabled={pending} />
+              <FlagToggle label="IA — transcrição" checked={aiTranscriptionEnabled} onChange={setAiTranscriptionEnabled} disabled={pending} />
+              <FlagToggle label="IA — análise" checked={aiAnalysisEnabled} onChange={setAiAnalysisEnabled} disabled={pending} />
+            </div>
+            {error && (
+              <p role="alert" className="rounded-md border border-destructive/30 bg-destructive/10 px-3 py-2 text-sm text-destructive">
+                {error}
+              </p>
+            )}
+            <div className="flex justify-end gap-2">
+              <Button type="button" variant="ghost" size="sm" onClick={() => setEditing(false)} disabled={pending}>
+                Cancelar
+              </Button>
+              <Button type="button" size="sm" onClick={onSave} disabled={pending}>
+                {pending ? "Salvando…" : "Salvar"}
+              </Button>
+            </div>
+          </div>
+        ) : (
+          <ul className="grid grid-cols-2 gap-x-6 gap-y-1 text-sm sm:grid-cols-5">
+            {PLAN_LIMIT_FIELDS.map(({ key, label }) => (
+              <li key={key} className="flex flex-col">
+                <span className="text-xs text-muted-foreground">{label}</span>
+                <span className="font-mono tabular-nums text-foreground">{plan[key] == null ? "sem limite" : String(plan[key])}</span>
+              </li>
+            ))}
+          </ul>
+        )}
+      </div>
+    </Panel>
+  );
+}
diff --git a/apps/frontend/src/app/platform/clientes/tenants/[id]/page.tsx b/apps/frontend/src/app/platform/clientes/tenants/[id]/page.tsx
new file mode 100644
index 0000000..479d90a
--- /dev/null
+++ b/apps/frontend/src/app/platform/clientes/tenants/[id]/page.tsx
@@ -0,0 +1,21 @@
+import { notFound } from "next/navigation";
+import { requireSession } from "@/lib/session";
+import { apiFetch, ApiError } from "@/lib/api";
+import type { Plan, Tenant } from "@/lib/platform-types";
+import { TenantDetailView } from "./tenant-detail-view";
+
+export default async function TenantDetailPage({ params }: { params: Promise<{ id: string }> }) {
+  const { id } = await params;
+  const session = await requireSession();
+
+  try {
+    const [tenant, plans] = await Promise.all([
+      apiFetch<Tenant & { plan: Plan }>(`/tenants/${id}`, session.accessToken),
+      apiFetch<Plan[]>("/plans", session.accessToken),
+    ]);
+    return <TenantDetailView tenant={tenant} plans={plans} />;
+  } catch (err) {
+    if (err instanceof ApiError && err.status === 404) notFound();
+    throw err;
+  }
+}
diff --git a/apps/frontend/src/app/platform/clientes/tenants/[id]/tenant-detail-view.tsx b/apps/frontend/src/app/platform/clientes/tenants/[id]/tenant-detail-view.tsx
new file mode 100644
index 0000000..20fc8be
--- /dev/null
+++ b/apps/frontend/src/app/platform/clientes/tenants/[id]/tenant-detail-view.tsx
@@ -0,0 +1,115 @@
+"use client";
+
+import { useState, useTransition } from "react";
+import { useRouter } from "next/navigation";
+import { Building2 } from "lucide-react";
+import { Panel, PanelHeader } from "@/components/ui/panel";
+import { Button } from "@/components/ui/button";
+import { Select, FieldLabel } from "@/components/ui/input";
+import { Pill } from "@/components/ui/pill";
+import { formatDate } from "@/lib/format";
+import { PLAN_LIMIT_FIELDS, TENANT_STATUS_LABELS, type Plan, type Tenant } from "@/lib/platform-types";
+import { updateTenant } from "../actions";
+
+const STATUSES = ["TRIAL", "ACTIVE", "SUSPENDED", "PAST_DUE", "CANCELLED"];
+
+export function TenantDetailView({ tenant, plans }: { tenant: Tenant & { plan: Plan }; plans: Plan[] }) {
+  const router = useRouter();
+  const [status, setStatus] = useState(tenant.status);
+  const [planId, setPlanId] = useState(tenant.planId);
+  const [pending, startTransition] = useTransition();
+  const [error, setError] = useState<string | null>(null);
+  const [saved, setSaved] = useState(false);
+
+  const dirty = status !== tenant.status || planId !== tenant.planId;
+
+  function onSave() {
+    setError(null);
+    setSaved(false);
+    startTransition(async () => {
+      const result = await updateTenant(tenant.id, { status, planId });
+      if (!result.ok) {
+        setError(result.error);
+        return;
+      }
+      setSaved(true);
+      router.refresh();
+    });
+  }
+
+  const selectedPlan = plans.find((p) => p.id === planId) ?? tenant.plan;
+
+  return (
+    <div className="max-w-3xl space-y-5">
+      <div>
+        <h1 className="flex items-center gap-2 text-lg font-semibold text-foreground">
+          <Building2 className="h-5 w-5 text-muted-foreground" aria-hidden />
+          {tenant.legalName}
+        </h1>
+        <p className="mt-1 text-sm text-muted-foreground">
+          Código <span className="font-mono">{tenant.code}</span> — criado em {formatDate(tenant.createdAt)},{" "}
+          {tenant.memberCount} usuário(s)
+        </p>
+      </div>
+
+      <Panel className="space-y-4 p-5">
+        <p className="text-sm font-medium text-foreground">Status e plano</p>
+        <div className="grid grid-cols-1 gap-4 sm:grid-cols-2">
+          <div>
+            <FieldLabel htmlFor="td-status">Status</FieldLabel>
+            <Select id="td-status" value={status} onChange={(e) => setStatus(e.target.value as Tenant["status"])} disabled={pending}>
+              {STATUSES.map((s) => (
+                <option key={s} value={s}>
+                  {TENANT_STATUS_LABELS[s]}
+                </option>
+              ))}
+            </Select>
+          </div>
+          <div>
+            <FieldLabel htmlFor="td-plan">Plano</FieldLabel>
+            <Select id="td-plan" value={planId} onChange={(e) => setPlanId(e.target.value)} disabled={pending}>
+              {plans.map((p) => (
+                <option key={p.id} value={p.id}>
+                  {p.name}
+                </option>
+              ))}
+            </Select>
+          </div>
+        </div>
+        {error && (
+          <p role="alert" className="rounded-md border border-destructive/30 bg-destructive/10 px-3 py-2 text-sm text-destructive">
+            {error}
+          </p>
+        )}
+        {saved && !dirty && <p className="text-sm text-status-green">Salvo.</p>}
+        <div className="flex justify-end">
+          <Button type="button" size="sm" onClick={onSave} disabled={pending || !dirty}>
+            {pending ? "Salvando…" : "Salvar"}
+          </Button>
+        </div>
+      </Panel>
+
+      <Panel>
+        <PanelHeader title={`Limites do plano ${selectedPlan.name}`} description="null = sem limite (agente.md secao 56)" />
+        <ul className="divide-y divide-border">
+          {PLAN_LIMIT_FIELDS.map(({ key, label }) => (
+            <li key={key} className="flex items-center justify-between px-5 py-2.5 text-sm">
+              <span className="text-foreground">{label}</span>
+              <span className="font-mono tabular-nums text-muted-foreground">
+                {selectedPlan[key] == null ? "sem limite" : String(selectedPlan[key])}
+              </span>
+            </li>
+          ))}
+          <li className="flex items-center justify-between px-5 py-2.5 text-sm">
+            <span className="text-foreground">Gravação habilitada</span>
+            <Pill tone={selectedPlan.recordingEnabled ? "accent" : "neutral"}>{selectedPlan.recordingEnabled ? "Sim" : "Não"}</Pill>
+          </li>
+          <li className="flex items-center justify-between px-5 py-2.5 text-sm">
+            <span className="text-foreground">IA habilitada</span>
+            <Pill tone={selectedPlan.aiEnabled ? "accent" : "neutral"}>{selectedPlan.aiEnabled ? "Sim" : "Não"}</Pill>
+          </li>
+        </ul>
+      </Panel>
+    </div>
+  );
+}
diff --git a/apps/frontend/src/app/platform/clientes/tenants/actions.ts b/apps/frontend/src/app/platform/clientes/tenants/actions.ts
new file mode 100644
index 0000000..c52118f
--- /dev/null
+++ b/apps/frontend/src/app/platform/clientes/tenants/actions.ts
@@ -0,0 +1,69 @@
+"use server";
+
+import { revalidatePath } from "next/cache";
+import { requireSession } from "@/lib/session";
+import { apiFetch, ApiError } from "@/lib/api";
+import type { Tenant } from "@/lib/platform-types";
+
+function extractErrorMessage(err: unknown): string {
+  if (err instanceof ApiError) {
+    try {
+      const parsed = JSON.parse(err.message);
+      if (Array.isArray(parsed.message)) return parsed.message.join(" ");
+      if (typeof parsed.message === "string") return parsed.message;
+    } catch {
+      // corpo não era JSON
+    }
+    return err.message || "Falha inesperada na API.";
+  }
+  return "Falha inesperada. Tente novamente.";
+}
+
+export interface CreateTenantInput {
+  code: string;
+  legalName: string;
+  tradeName?: string;
+  taxId?: string;
+  planId: string;
+  adminEmail: string;
+  adminName: string;
+}
+
+export interface CreateTenantResult {
+  tenant: Tenant;
+  admin: { email: string; temporaryPassword: string };
+}
+
+export async function createTenant(input: CreateTenantInput): Promise<({ ok: true } & CreateTenantResult) | { ok: false; error: string }> {
+  const session = await requireSession();
+  try {
+    const result = await apiFetch<CreateTenantResult>("/tenants", session.accessToken, {
+      method: "POST",
+      body: JSON.stringify(input),
+    });
+    revalidatePath("/platform/clientes/tenants");
+    return { ok: true, ...result };
+  } catch (err) {
+    return { ok: false, error: extractErrorMessage(err) };
+  }
+}
+
+export interface UpdateTenantInput {
+  status?: string;
+  planId?: string;
+}
+
+export async function updateTenant(id: string, input: UpdateTenantInput): Promise<{ ok: true; tenant: Tenant } | { ok: false; error: string }> {
+  const session = await requireSession();
+  try {
+    const tenant = await apiFetch<Tenant>(`/tenants/${id}`, session.accessToken, {
+      method: "PATCH",
+      body: JSON.stringify(input),
+    });
+    revalidatePath("/platform/clientes/tenants");
+    revalidatePath(`/platform/clientes/tenants/${id}`);
+    return { ok: true, tenant };
+  } catch (err) {
+    return { ok: false, error: extractErrorMessage(err) };
+  }
+}
diff --git a/apps/frontend/src/app/platform/clientes/tenants/new/form.tsx b/apps/frontend/src/app/platform/clientes/tenants/new/form.tsx
new file mode 100644
index 0000000..8aa2c7b
--- /dev/null
+++ b/apps/frontend/src/app/platform/clientes/tenants/new/form.tsx
@@ -0,0 +1,165 @@
+"use client";
+
+import { useState, useTransition } from "react";
+import Link from "next/link";
+import { Check } from "lucide-react";
+import { Panel } from "@/components/ui/panel";
+import { Button } from "@/components/ui/button";
+import { Input, Select, FieldLabel } from "@/components/ui/input";
+import { SecretReveal } from "@/components/ui/secret-reveal";
+import type { Plan } from "@/lib/platform-types";
+import { createTenant, type CreateTenantResult } from "../actions";
+
+export function NewTenantForm({ plans }: { plans: Plan[] }) {
+  const [code, setCode] = useState("");
+  const [legalName, setLegalName] = useState("");
+  const [tradeName, setTradeName] = useState("");
+  const [taxId, setTaxId] = useState("");
+  const [planId, setPlanId] = useState(plans[0]?.id ?? "");
+  const [adminEmail, setAdminEmail] = useState("");
+  const [adminName, setAdminName] = useState("");
+  const [error, setError] = useState<string | null>(null);
+  const [pending, startTransition] = useTransition();
+  const [created, setCreated] = useState<CreateTenantResult | null>(null);
+
+  function onSubmit(e: React.FormEvent) {
+    e.preventDefault();
+    setError(null);
+
+    if (!/^[a-z0-9-]+$/.test(code)) {
+      setError("Código deve ser minúsculo, só letras/números/hífen.");
+      return;
+    }
+    if (!legalName.trim() || !adminEmail.trim() || !adminName.trim() || !planId) {
+      setError("Razão social, plano, e-mail e nome do admin são obrigatórios.");
+      return;
+    }
+
+    startTransition(async () => {
+      const result = await createTenant({
+        code,
+        legalName: legalName.trim(),
+        tradeName: tradeName.trim() || undefined,
+        taxId: taxId.trim() || undefined,
+        planId,
+        adminEmail: adminEmail.trim(),
+        adminName: adminName.trim(),
+      });
+      if (!result.ok) {
+        setError(result.error);
+        return;
+      }
+      setCreated(result);
+    });
+  }
+
+  if (created) {
+    return (
+      <div className="space-y-5">
+        <Panel className="flex items-center gap-3 p-5">
+          <span className="flex h-10 w-10 shrink-0 items-center justify-center rounded-full bg-status-green/15 text-status-green">
+            <Check className="h-5 w-5" aria-hidden />
+          </span>
+          <div>
+            <p className="text-sm font-semibold text-foreground">Tenant {created.tenant.legalName} criado</p>
+            <p className="text-sm text-muted-foreground">
+              Admin: <span className="font-mono">{created.admin.email}</span> (troca de senha obrigatória no
+              primeiro login)
+            </p>
+          </div>
+        </Panel>
+
+        <SecretReveal label="Senha temporária do admin" value={created.admin.temporaryPassword} />
+
+        <div className="flex justify-end gap-3">
+          <Button asChild variant="outline">
+            <Link href="/platform/clientes/tenants">Voltar pra lista</Link>
+          </Button>
+          <Button asChild>
+            <Link href={`/platform/clientes/tenants/${created.tenant.id}`}>Ver tenant</Link>
+          </Button>
+        </div>
+      </div>
+    );
+  }
+
+  if (plans.length === 0) {
+    return (
+      <Panel className="p-5">
+        <p className="text-sm text-muted-foreground">
+          Nenhum plano cadastrado ainda. <Link href="/platform/clientes/planos" className="text-primary underline-offset-4 hover:underline">Crie um plano</Link> antes de criar um tenant.
+        </p>
+      </Panel>
+    );
+  }
+
+  return (
+    <form onSubmit={onSubmit} noValidate className="space-y-5">
+      <Panel className="space-y-4 p-5">
+        <div className="grid grid-cols-1 gap-4 sm:grid-cols-2">
+          <div>
+            <FieldLabel htmlFor="t-code">Código (identificador único)</FieldLabel>
+            <Input
+              id="t-code"
+              value={code}
+              onChange={(e) => setCode(e.target.value.toLowerCase())}
+              placeholder="ex.: acme"
+              className="font-mono"
+              disabled={pending}
+            />
+          </div>
+          <div>
+            <FieldLabel htmlFor="t-plan">Plano</FieldLabel>
+            <Select id="t-plan" value={planId} onChange={(e) => setPlanId(e.target.value)} disabled={pending}>
+              {plans.map((p) => (
+                <option key={p.id} value={p.id}>
+                  {p.name}
+                </option>
+              ))}
+            </Select>
+          </div>
+        </div>
+        <div className="grid grid-cols-1 gap-4 sm:grid-cols-2">
+          <div>
+            <FieldLabel htmlFor="t-legal">Razão social</FieldLabel>
+            <Input id="t-legal" value={legalName} onChange={(e) => setLegalName(e.target.value)} placeholder="Ex.: Acme Call Center LTDA" disabled={pending} />
+          </div>
+          <div>
+            <FieldLabel htmlFor="t-trade">Nome fantasia (opcional)</FieldLabel>
+            <Input id="t-trade" value={tradeName} onChange={(e) => setTradeName(e.target.value)} placeholder="Ex.: Acme Call Center" disabled={pending} />
+          </div>
+        </div>
+        <div className="sm:w-64">
+          <FieldLabel htmlFor="t-tax">CNPJ/CPF (opcional)</FieldLabel>
+          <Input id="t-tax" value={taxId} onChange={(e) => setTaxId(e.target.value)} className="font-mono" disabled={pending} />
+        </div>
+      </Panel>
+
+      <Panel className="space-y-4 p-5">
+        <p className="text-sm font-medium text-foreground">Primeiro usuário (Tenant Admin)</p>
+        <div className="grid grid-cols-1 gap-4 sm:grid-cols-2">
+          <div>
+            <FieldLabel htmlFor="t-admin-name">Nome</FieldLabel>
+            <Input id="t-admin-name" value={adminName} onChange={(e) => setAdminName(e.target.value)} disabled={pending} />
+          </div>
+          <div>
+            <FieldLabel htmlFor="t-admin-email">E-mail</FieldLabel>
+            <Input id="t-admin-email" type="email" value={adminEmail} onChange={(e) => setAdminEmail(e.target.value)} disabled={pending} />
+          </div>
+        </div>
+      </Panel>
+
+      {error && (
+        <p role="alert" className="rounded-md border border-destructive/30 bg-destructive/10 px-3 py-2 text-sm text-destructive">
+          {error}
+        </p>
+      )}
+
+      <div className="flex justify-end gap-3">
+        <Button type="submit" disabled={pending}>
+          {pending ? "Criando…" : "Criar tenant"}
+        </Button>
+      </div>
+    </form>
+  );
+}
diff --git a/apps/frontend/src/app/platform/clientes/tenants/new/page.tsx b/apps/frontend/src/app/platform/clientes/tenants/new/page.tsx
new file mode 100644
index 0000000..1a10fe0
--- /dev/null
+++ b/apps/frontend/src/app/platform/clientes/tenants/new/page.tsx
@@ -0,0 +1,21 @@
+import { requireSession } from "@/lib/session";
+import { apiFetch } from "@/lib/api";
+import type { Plan } from "@/lib/platform-types";
+import { NewTenantForm } from "./form";
+
+export default async function NewTenantPage() {
+  const session = await requireSession();
+  const plans = await apiFetch<Plan[]>("/plans", session.accessToken);
+
+  return (
+    <div className="max-w-2xl space-y-5">
+      <div>
+        <h1 className="text-lg font-semibold text-foreground">Novo tenant</h1>
+        <p className="mt-1 text-sm text-muted-foreground">
+          Cria o cliente e o primeiro usuário (Tenant Admin) na mesma ação.
+        </p>
+      </div>
+      <NewTenantForm plans={plans} />
+    </div>
+  );
+}
diff --git a/apps/frontend/src/app/platform/clientes/tenants/page.tsx b/apps/frontend/src/app/platform/clientes/tenants/page.tsx
new file mode 100644
index 0000000..33be457
--- /dev/null
+++ b/apps/frontend/src/app/platform/clientes/tenants/page.tsx
@@ -0,0 +1,10 @@
+import { requireSession } from "@/lib/session";
+import { apiFetch } from "@/lib/api";
+import type { Tenant } from "@/lib/platform-types";
+import { TenantsView } from "./tenants-view";
+
+export default async function TenantsPage() {
+  const session = await requireSession();
+  const tenants = await apiFetch<Tenant[]>("/tenants", session.accessToken);
+  return <TenantsView tenants={tenants} />;
+}
diff --git a/apps/frontend/src/app/platform/clientes/tenants/tenants-view.tsx b/apps/frontend/src/app/platform/clientes/tenants/tenants-view.tsx
new file mode 100644
index 0000000..5249d2a
--- /dev/null
+++ b/apps/frontend/src/app/platform/clientes/tenants/tenants-view.tsx
@@ -0,0 +1,101 @@
+"use client";
+
+import { useMemo, useState } from "react";
+import Link from "next/link";
+import { Building2, Plus, Search } from "lucide-react";
+import { Panel, PanelHeader } from "@/components/ui/panel";
+import { Button } from "@/components/ui/button";
+import { Input } from "@/components/ui/input";
+import { Pill } from "@/components/ui/pill";
+import { EmptyState, TBody, TD, TH, THead, TR, Table } from "@/components/ui/table";
+import { formatDate } from "@/lib/format";
+import { TENANT_STATUS_LABELS, type Tenant } from "@/lib/platform-types";
+
+const STATUS_TONE: Record<string, "accent" | "neutral"> = {
+  ACTIVE: "accent",
+  TRIAL: "neutral",
+  SUSPENDED: "neutral",
+  PAST_DUE: "neutral",
+  CANCELLED: "neutral",
+};
+
+export function TenantsView({ tenants }: { tenants: Tenant[] }) {
+  const [query, setQuery] = useState("");
+
+  const rows = useMemo(() => {
+    const q = query.trim().toLowerCase();
+    if (!q) return tenants;
+    return tenants.filter((t) => t.legalName.toLowerCase().includes(q) || t.code.toLowerCase().includes(q));
+  }, [tenants, query]);
+
+  return (
+    <div className="space-y-5">
+      <div className="flex flex-wrap items-start justify-between gap-3">
+        <div>
+          <h1 className="text-lg font-semibold text-foreground">Tenants</h1>
+          <p className="mt-1 max-w-2xl text-sm text-muted-foreground">
+            Clientes da plataforma (agente.md secao 29, 141) — criar um tenant já cria o primeiro usuário
+            (Tenant Admin) na mesma ação, sem esse usuário o tenant fica inacessível.
+          </p>
+        </div>
+        <Button asChild>
+          <Link href="/platform/clientes/tenants/new">
+            <Plus className="h-4 w-4" aria-hidden />
+            Novo tenant
+          </Link>
+        </Button>
+      </div>
+
+      <Panel>
+        <PanelHeader title="Tenants cadastrados" description={`${tenants.length} tenant(s) na plataforma`} />
+        <div className="border-b border-border px-5 py-3">
+          <div className="relative w-full max-w-xs">
+            <Search className="pointer-events-none absolute left-2.5 top-1/2 h-4 w-4 -translate-y-1/2 text-muted-foreground" aria-hidden />
+            <Input value={query} onChange={(e) => setQuery(e.target.value)} placeholder="Buscar tenant…" className="pl-8" aria-label="Buscar tenant" />
+          </div>
+        </div>
+        {rows.length === 0 ? (
+          <EmptyState
+            title={tenants.length > 0 ? "Nenhum tenant bate com essa busca" : "Nenhum tenant cadastrado ainda"}
+            description={tenants.length > 0 ? "Tente outro termo." : "Crie o primeiro cliente da plataforma."}
+          />
+        ) : (
+          <Table>
+            <THead>
+              <TR>
+                <TH>Tenant</TH>
+                <TH>Código</TH>
+                <TH>Plano</TH>
+                <TH>Status</TH>
+                <TH>Usuários</TH>
+                <TH>Criado</TH>
+              </TR>
+            </THead>
+            <TBody>
+              {rows.map((t) => (
+                <TR key={t.id}>
+                  <TD>
+                    <Link
+                      href={`/platform/clientes/tenants/${t.id}`}
+                      className="flex items-center gap-2 font-medium text-foreground underline-offset-4 hover:text-primary hover:underline focus-visible:underline"
+                    >
+                      <Building2 className="h-3.5 w-3.5 text-muted-foreground" aria-hidden />
+                      {t.legalName}
+                    </Link>
+                  </TD>
+                  <TD className="font-mono text-xs text-muted-foreground">{t.code}</TD>
+                  <TD className="text-muted-foreground">{t.plan.name}</TD>
+                  <TD>
+                    <Pill tone={STATUS_TONE[t.status] ?? "neutral"}>{TENANT_STATUS_LABELS[t.status] ?? t.status}</Pill>
+                  </TD>
+                  <TD className="font-mono tabular-nums text-muted-foreground">{t.memberCount}</TD>
+                  <TD className="text-muted-foreground">{formatDate(t.createdAt)}</TD>
+                </TR>
+              ))}
+            </TBody>
+          </Table>
+        )}
+      </Panel>
+    </div>
+  );
+}
diff --git a/apps/frontend/src/components/platform-shell/nav-data.ts b/apps/frontend/src/components/platform-shell/nav-data.ts
index 3ec5ce3..3984009 100644
--- a/apps/frontend/src/components/platform-shell/nav-data.ts
+++ b/apps/frontend/src/components/platform-shell/nav-data.ts
@@ -19,7 +19,20 @@ export const PLATFORM_NAV: NavSection[] = [
   {
     label: "Clientes",
     icon: Building2,
-    children: [{ label: "Tenants" }, { label: "Planos" }, { label: "Assinaturas" }, { label: "Quotas" }],
+    children: [
+      {
+        label: "Tenants",
+        href: "/platform/clientes/tenants",
+        description: "Clientes da plataforma — criar cria também o primeiro usuário",
+      },
+      {
+        label: "Planos",
+        href: "/platform/clientes/planos",
+        description: "Catálogo de limites e recursos por plano",
+      },
+      { label: "Assinaturas" },
+      { label: "Quotas" },
+    ],
   },
   {
     label: "Billing",
diff --git a/apps/frontend/src/lib/platform-types.ts b/apps/frontend/src/lib/platform-types.ts
new file mode 100644
index 0000000..ad7e035
--- /dev/null
+++ b/apps/frontend/src/lib/platform-types.ts
@@ -0,0 +1,61 @@
+export interface Plan {
+  id: string;
+  key: string;
+  name: string;
+  maxExtensions: number | null;
+  maxAgents: number | null;
+  maxTrunks: number | null;
+  maxQueues: number | null;
+  maxCampaigns: number | null;
+  maxCps: number | null;
+  maxConcurrentCalls: number | null;
+  maxDailyCalls: number | null;
+  maxMonthlyCalls: number | null;
+  maxRecordingStorageGb: number | null;
+  recordingRetentionDays: number | null;
+  transcriptionRetentionDays: number | null;
+  recordingEnabled: boolean;
+  aiEnabled: boolean;
+  aiTranscriptionEnabled: boolean;
+  aiAnalysisEnabled: boolean;
+  apiAccessEnabled: boolean;
+  createdAt: string;
+}
+
+export interface Tenant {
+  id: string;
+  code: string;
+  slug: string;
+  legalName: string;
+  tradeName: string | null;
+  taxId: string | null;
+  status: "TRIAL" | "ACTIVE" | "SUSPENDED" | "PAST_DUE" | "CANCELLED";
+  timezone: string;
+  locale: string;
+  billingCurrency: string;
+  planId: string;
+  plan: { id: string; key: string; name: string };
+  memberCount: number;
+  createdAt: string;
+}
+
+export const TENANT_STATUS_LABELS: Record<string, string> = {
+  TRIAL: "Trial",
+  ACTIVE: "Ativo",
+  SUSPENDED: "Suspenso",
+  PAST_DUE: "Inadimplente",
+  CANCELLED: "Cancelado",
+};
+
+export const PLAN_LIMIT_FIELDS: { key: keyof Plan; label: string }[] = [
+  { key: "maxExtensions", label: "Ramais" },
+  { key: "maxAgents", label: "Agentes" },
+  { key: "maxTrunks", label: "Troncos" },
+  { key: "maxQueues", label: "Filas" },
+  { key: "maxCampaigns", label: "Campanhas" },
+  { key: "maxCps", label: "CPS" },
+  { key: "maxConcurrentCalls", label: "Chamadas simultâneas" },
+  { key: "maxDailyCalls", label: "Chamadas/dia" },
+  { key: "maxMonthlyCalls", label: "Chamadas/mês" },
+  { key: "maxRecordingStorageGb", label: "Armazenamento (GB)" },
+];