diff --git a/services/platform-service/src/modules/jarvis-teams/jarvis-teams.test.ts b/services/platform-service/src/modules/jarvis-teams/jarvis-teams.test.ts
new file mode 100644
index 00000000..c95bb260
--- /dev/null
+++ b/services/platform-service/src/modules/jarvis-teams/jarvis-teams.test.ts
@@ -0,0 +1,242 @@
+import { describe, it, expect, beforeEach } from 'vitest';
+import {
+  createTeam,
+  getTeam,
+  getTeamsForUser,
+  updateTeam,
+  deleteTeam,
+  addMember,
+  getTeamMembers,
+  getMember,
+  updateMemberRole,
+  acceptInvite,
+  removeMember,
+  shareAgent,
+  unshareAgent,
+  getTeamAnalytics,
+  resetStores,
+} from './repository.js';
+
+beforeEach(() => {
+  resetStores();
+});
+
+// ── Team CRUD ───────────────────────────────────────────────
+
+describe('createTeam', () => {
+  it('creates a team with unique id', () => {
+    const team = createTeam({ name: 'Acme Corp', ownerId: 'user_1' });
+    expect(team.id).toMatch(/^team_/);
+    expect(team.name).toBe('Acme Corp');
+    expect(team.ownerId).toBe('user_1');
+    expect(team.productId).toBe('jarvisjr');
+  });
+
+  it('defaults to starter plan with 5 members', () => {
+    const team = createTeam({ name: 'Small Team', ownerId: 'user_1' });
+    expect(team.plan).toBe('starter');
+    expect(team.maxMembers).toBe(5);
+  });
+
+  it('business plan allows 25 members', () => {
+    const team = createTeam({ name: 'Biz', ownerId: 'user_1', plan: 'business' });
+    expect(team.maxMembers).toBe(25);
+  });
+
+  it('enterprise plan allows 100 members and enables SSO', () => {
+    const team = createTeam({ name: 'Big Co', ownerId: 'user_1', plan: 'enterprise' });
+    expect(team.maxMembers).toBe(100);
+    expect(team.settings.ssoEnabled).toBe(true);
+  });
+
+  it('auto-adds owner as active member', () => {
+    const team = createTeam({ name: 'Test', ownerId: 'user_1' });
+    const members = getTeamMembers(team.teamId);
+    expect(members).toHaveLength(1);
+    expect(members[0].role).toBe('owner');
+    expect(members[0].status).toBe('active');
+  });
+});
+
+describe('getTeam', () => {
+  it('returns team by id', () => {
+    const team = createTeam({ name: 'Test', ownerId: 'user_1' });
+    expect(getTeam(team.teamId)?.name).toBe('Test');
+  });
+
+  it('returns undefined for non-existent team', () => {
+    expect(getTeam('non_existent')).toBeUndefined();
+  });
+});
+
+describe('getTeamsForUser', () => {
+  it('returns teams where user is active member', () => {
+    createTeam({ name: 'Team A', ownerId: 'user_1' });
+    createTeam({ name: 'Team B', ownerId: 'user_2' });
+    const teams = getTeamsForUser('user_1');
+    expect(teams).toHaveLength(1);
+    expect(teams[0].name).toBe('Team A');
+  });
+});
+
+describe('updateTeam', () => {
+  it('updates team name', () => {
+    const team = createTeam({ name: 'Old', ownerId: 'user_1' });
+    const updated = updateTeam(team.teamId, { name: 'New' });
+    expect(updated?.name).toBe('New');
+  });
+
+  it('returns undefined for non-existent team', () => {
+    expect(updateTeam('nope', { name: 'X' })).toBeUndefined();
+  });
+});
+
+describe('deleteTeam', () => {
+  it('deletes team and its members', () => {
+    const team = createTeam({ name: 'Test', ownerId: 'user_1' });
+    expect(deleteTeam(team.teamId)).toBe(true);
+    expect(getTeam(team.teamId)).toBeUndefined();
+    expect(getTeamMembers(team.teamId)).toHaveLength(0);
+  });
+
+  it('returns false for non-existent team', () => {
+    expect(deleteTeam('nope')).toBe(false);
+  });
+});
+
+// ── Member Management ───────────────────────────────────────
+
+describe('addMember', () => {
+  it('adds invited member', () => {
+    const team = createTeam({ name: 'Test', ownerId: 'user_1' });
+    const member = addMember({
+      teamId: team.teamId,
+      userId: 'user_2',
+      email: 'alice@acme.com',
+      displayName: 'Alice',
+      role: 'member',
+      invitedBy: 'user_1',
+    });
+    expect(member.status).toBe('invited');
+    expect(member.role).toBe('member');
+  });
+});
+
+describe('acceptInvite', () => {
+  it('activates invited member', () => {
+    const team = createTeam({ name: 'Test', ownerId: 'user_1' });
+    const member = addMember({
+      teamId: team.teamId,
+      userId: 'user_2',
+      email: 'bob@acme.com',
+      displayName: 'Bob',
+      role: 'member',
+      invitedBy: 'user_1',
+    });
+    const accepted = acceptInvite(member.id);
+    expect(accepted?.status).toBe('active');
+    expect(accepted?.joinedAt).toBeTruthy();
+  });
+
+  it('returns undefined for already active member', () => {
+    const team = createTeam({ name: 'Test', ownerId: 'user_1' });
+    const members = getTeamMembers(team.teamId);
+    expect(acceptInvite(members[0].id)).toBeUndefined(); // owner is already active
+  });
+});
+
+describe('updateMemberRole', () => {
+  it('promotes member to manager', () => {
+    const team = createTeam({ name: 'Test', ownerId: 'user_1' });
+    const member = addMember({
+      teamId: team.teamId,
+      userId: 'user_2',
+      email: 'a@b.com',
+      displayName: 'A',
+      role: 'member',
+      invitedBy: 'user_1',
+    });
+    const updated = updateMemberRole(member.id, 'manager');
+    expect(updated?.role).toBe('manager');
+  });
+
+  it('cannot change owner role', () => {
+    const team = createTeam({ name: 'Test', ownerId: 'user_1' });
+    const owner = getTeamMembers(team.teamId)[0];
+    expect(updateMemberRole(owner.id, 'member')).toBeUndefined();
+  });
+});
+
+describe('removeMember', () => {
+  it('removes non-owner member', () => {
+    const team = createTeam({ name: 'Test', ownerId: 'user_1' });
+    const member = addMember({
+      teamId: team.teamId,
+      userId: 'user_2',
+      email: 'a@b.com',
+      displayName: 'A',
+      role: 'member',
+      invitedBy: 'user_1',
+    });
+    expect(removeMember(member.id)).toBe(true);
+    expect(getMember(member.id)).toBeUndefined();
+  });
+
+  it('cannot remove owner', () => {
+    const team = createTeam({ name: 'Test', ownerId: 'user_1' });
+    const owner = getTeamMembers(team.teamId)[0];
+    expect(removeMember(owner.id)).toBe(false);
+  });
+});
+
+// ── Shared Agents ───────────────────────────────────────────
+
+describe('shareAgent', () => {
+  it('adds agent to shared list', () => {
+    const team = createTeam({ name: 'Test', ownerId: 'user_1' });
+    const updated = shareAgent(team.teamId, 'agent_123');
+    expect(updated?.sharedAgentIds).toContain('agent_123');
+  });
+
+  it('does not duplicate agent', () => {
+    const team = createTeam({ name: 'Test', ownerId: 'user_1' });
+    shareAgent(team.teamId, 'agent_123');
+    const updated = shareAgent(team.teamId, 'agent_123');
+    expect(updated?.sharedAgentIds.filter(id => id === 'agent_123')).toHaveLength(1);
+  });
+});
+
+describe('unshareAgent', () => {
+  it('removes agent from shared list', () => {
+    const team = createTeam({ name: 'Test', ownerId: 'user_1' });
+    shareAgent(team.teamId, 'agent_123');
+    const updated = unshareAgent(team.teamId, 'agent_123');
+    expect(updated?.sharedAgentIds).not.toContain('agent_123');
+  });
+});
+
+// ── Analytics ───────────────────────────────────────────────
+
+describe('getTeamAnalytics', () => {
+  it('returns analytics stub for team', () => {
+    const team = createTeam({ name: 'Test', ownerId: 'user_1' });
+    addMember({
+      teamId: team.teamId,
+      userId: 'user_2',
+      email: 'a@b.com',
+      displayName: 'A',
+      role: 'member',
+      invitedBy: 'user_1',
+    });
+    // Accept the invite so they count as active
+    const members = getTeamMembers(team.teamId);
+    const invited = members.find(m => m.status === 'invited');
+    if (invited) acceptInvite(invited.id);
+
+    const analytics = getTeamAnalytics(team.teamId, '2026-03');
+    expect(analytics.teamId).toBe(team.teamId);
+    expect(analytics.period).toBe('2026-03');
+    expect(analytics.activeMembers).toBe(2);
+    expect(analytics.memberBreakdown).toHaveLength(2);
+  });
+});
diff --git a/services/platform-service/src/modules/jarvis-teams/repository.ts b/services/platform-service/src/modules/jarvis-teams/repository.ts
new file mode 100644
index 00000000..1fdb1a7d
--- /dev/null
+++ b/services/platform-service/src/modules/jarvis-teams/repository.ts
@@ -0,0 +1,222 @@
+/**
+ * JarvisJr Teams — repository for team CRUD and member management.
+ * In-memory store for now; will migrate to Cosmos containers.
+ */
+
+import crypto from 'node:crypto';
+import type { Team, TeamMember, TeamAnalytics } from './types.js';
+
+// ── In-Memory Stores ────────────────────────────────────────
+
+const teams = new Map<string, Team>();
+const members = new Map<string, TeamMember>();
+
+// ── Team CRUD ───────────────────────────────────────────────
+
+export function createTeam(input: {
+  name: string;
+  ownerId: string;
+  plan?: 'starter' | 'business' | 'enterprise';
+}): Team {
+  const now = new Date().toISOString();
+  const teamId = `team_${crypto.randomUUID()}`;
+
+  const maxMembers = input.plan === 'enterprise' ? 100 : input.plan === 'business' ? 25 : 5;
+
+  const team: Team = {
+    id: teamId,
+    productId: 'jarvisjr',
+    teamId,
+    name: input.name,
+    ownerId: input.ownerId,
+    plan: input.plan ?? 'starter',
+    maxMembers,
+    sharedAgentIds: [],
+    settings: {
+      requireApprovalForAgents: false,
+      analyticsVisible: 'managers',
+      ssoEnabled: input.plan === 'enterprise',
+    },
+    createdAt: now,
+    updatedAt: now,
+  };
+
+  teams.set(teamId, team);
+
+  // Auto-add owner as member
+  addMember({
+    teamId,
+    userId: input.ownerId,
+    email: `${input.ownerId}@team.local`,
+    displayName: 'Team Owner',
+    role: 'owner',
+    invitedBy: input.ownerId,
+  });
+
+  return team;
+}
+
+export function getTeam(teamId: string): Team | undefined {
+  return teams.get(teamId);
+}
+
+export function getTeamsForUser(userId: string): Team[] {
+  const memberTeamIds = new Set<string>();
+  for (const m of members.values()) {
+    if (m.userId === userId && m.status === 'active') {
+      memberTeamIds.add(m.teamId);
+    }
+  }
+  return Array.from(teams.values()).filter(t => memberTeamIds.has(t.teamId));
+}
+
+export function updateTeam(
+  teamId: string,
+  updates: Partial<Pick<Team, 'name' | 'settings'>>
+): Team | undefined {
+  const team = teams.get(teamId);
+  if (!team) return undefined;
+
+  const updated: Team = {
+    ...team,
+    ...updates,
+    settings: updates.settings ? { ...team.settings, ...updates.settings } : team.settings,
+    updatedAt: new Date().toISOString(),
+  };
+  teams.set(teamId, updated);
+  return updated;
+}
+
+export function deleteTeam(teamId: string): boolean {
+  // Remove all members
+  for (const [id, m] of members.entries()) {
+    if (m.teamId === teamId) members.delete(id);
+  }
+  return teams.delete(teamId);
+}
+
+// ── Member Management ───────────────────────────────────────
+
+export function addMember(input: {
+  teamId: string;
+  userId: string;
+  email: string;
+  displayName: string;
+  role: 'owner' | 'manager' | 'member';
+  invitedBy: string;
+}): TeamMember {
+  const now = new Date().toISOString();
+  const id = `member_${crypto.randomUUID()}`;
+
+  const member: TeamMember = {
+    id,
+    productId: 'jarvisjr',
+    teamId: input.teamId,
+    userId: input.userId,
+    email: input.email,
+    displayName: input.displayName,
+    role: input.role,
+    status: input.role === 'owner' ? 'active' : 'invited',
+    joinedAt: input.role === 'owner' ? now : null,
+    invitedAt: now,
+    invitedBy: input.invitedBy,
+  };
+
+  members.set(id, member);
+  return member;
+}
+
+export function getTeamMembers(teamId: string): TeamMember[] {
+  return Array.from(members.values()).filter(m => m.teamId === teamId);
+}
+
+export function getMember(memberId: string): TeamMember | undefined {
+  return members.get(memberId);
+}
+
+export function updateMemberRole(
+  memberId: string,
+  role: 'manager' | 'member'
+): TeamMember | undefined {
+  const member = members.get(memberId);
+  if (!member || member.role === 'owner') return undefined;
+  const updated = { ...member, role };
+  members.set(memberId, updated);
+  return updated;
+}
+
+export function acceptInvite(memberId: string): TeamMember | undefined {
+  const member = members.get(memberId);
+  if (!member || member.status !== 'invited') return undefined;
+  const updated: TeamMember = {
+    ...member,
+    status: 'active',
+    joinedAt: new Date().toISOString(),
+  };
+  members.set(memberId, updated);
+  return updated;
+}
+
+export function removeMember(memberId: string): boolean {
+  const member = members.get(memberId);
+  if (!member || member.role === 'owner') return false;
+  return members.delete(memberId);
+}
+
+// ── Shared Agents ───────────────────────────────────────────
+
+export function shareAgent(teamId: string, agentId: string): Team | undefined {
+  const team = teams.get(teamId);
+  if (!team) return undefined;
+  if (team.sharedAgentIds.includes(agentId)) return team;
+
+  const updated: Team = {
+    ...team,
+    sharedAgentIds: [...team.sharedAgentIds, agentId],
+    updatedAt: new Date().toISOString(),
+  };
+  teams.set(teamId, updated);
+  return updated;
+}
+
+export function unshareAgent(teamId: string, agentId: string): Team | undefined {
+  const team = teams.get(teamId);
+  if (!team) return undefined;
+
+  const updated: Team = {
+    ...team,
+    sharedAgentIds: team.sharedAgentIds.filter(id => id !== agentId),
+    updatedAt: new Date().toISOString(),
+  };
+  teams.set(teamId, updated);
+  return updated;
+}
+
+// ── Analytics ───────────────────────────────────────────────
+
+export function getTeamAnalytics(teamId: string, period: string): TeamAnalytics {
+  const teamMembers = getTeamMembers(teamId).filter(m => m.status === 'active');
+
+  // Stub: in production, query jarvis_sessions container
+  return {
+    teamId,
+    period,
+    totalSessions: 0,
+    totalMinutes: 0,
+    activeMembers: teamMembers.length,
+    topAgents: [],
+    memberBreakdown: teamMembers.map(m => ({
+      userId: m.userId,
+      displayName: m.displayName,
+      sessions: 0,
+      minutes: 0,
+    })),
+  };
+}
+
+// ── Reset (for tests) ──────────────────────────────────────
+
+export function resetStores(): void {
+  teams.clear();
+  members.clear();
+}
diff --git a/services/platform-service/src/modules/jarvis-teams/types.ts b/services/platform-service/src/modules/jarvis-teams/types.ts
new file mode 100644
index 00000000..b50922ee
--- /dev/null
+++ b/services/platform-service/src/modules/jarvis-teams/types.ts
@@ -0,0 +1,108 @@
+/**
+ * JarvisJr Teams — types and Zod schemas for enterprise team management.
+ * Partition key: /teamId for team docs, /userId for member docs.
+ */
+
+import { z } from 'zod';
+
+// ── Team ────────────────────────────────────────────────────
+
+export const TeamSchema = z.object({
+  id: z.string(),
+  productId: z.string().default('jarvisjr'),
+  teamId: z.string(),
+  name: z.string().min(1).max(100),
+  ownerId: z.string(),
+  plan: z.enum(['starter', 'business', 'enterprise']).default('starter'),
+  maxMembers: z.number().int().min(1).default(5),
+  sharedAgentIds: z.array(z.string()).default([]),
+  settings: z
+    .object({
+      requireApprovalForAgents: z.boolean().default(false),
+      analyticsVisible: z.enum(['owner', 'managers', 'all']).default('managers'),
+      ssoEnabled: z.boolean().default(false),
+    })
+    .default({}),
+  createdAt: z.string(),
+  updatedAt: z.string(),
+});
+
+export type Team = z.infer<typeof TeamSchema>;
+
+// ── Team Member ─────────────────────────────────────────────
+
+export const TeamMemberSchema = z.object({
+  id: z.string(),
+  productId: z.string().default('jarvisjr'),
+  teamId: z.string(),
+  userId: z.string(),
+  email: z.string().email(),
+  displayName: z.string(),
+  role: z.enum(['owner', 'manager', 'member']),
+  status: z.enum(['active', 'invited', 'suspended']).default('active'),
+  joinedAt: z.string().nullable().default(null),
+  invitedAt: z.string(),
+  invitedBy: z.string(),
+});
+
+export type TeamMember = z.infer<typeof TeamMemberSchema>;
+
+// ── Team Analytics ──────────────────────────────────────────
+
+export const TeamAnalyticsSchema = z.object({
+  teamId: z.string(),
+  period: z.string(), // e.g. "2026-03"
+  totalSessions: z.number().int().default(0),
+  totalMinutes: z.number().default(0),
+  activeMembers: z.number().int().default(0),
+  topAgents: z
+    .array(
+      z.object({
+        agentName: z.string(),
+        sessions: z.number().int(),
+      })
+    )
+    .default([]),
+  memberBreakdown: z
+    .array(
+      z.object({
+        userId: z.string(),
+        displayName: z.string(),
+        sessions: z.number().int(),
+        minutes: z.number(),
+      })
+    )
+    .default([]),
+});
+
+export type TeamAnalytics = z.infer<typeof TeamAnalyticsSchema>;
+
+// ── Request/Response Schemas ────────────────────────────────
+
+export const CreateTeamSchema = z.object({
+  name: z.string().min(1).max(100),
+  plan: z.enum(['starter', 'business', 'enterprise']).optional(),
+});
+
+export const InviteMemberSchema = z.object({
+  email: z.string().email(),
+  displayName: z.string().min(1),
+  role: z.enum(['manager', 'member']).default('member'),
+});
+
+export const UpdateMemberRoleSchema = z.object({
+  role: z.enum(['manager', 'member']),
+});
+
+export const ShareAgentSchema = z.object({
+  agentId: z.string(),
+});
+
+export const TeamIdParamSchema = z.object({
+  teamId: z.string(),
+});
+
+export const MemberIdParamSchema = z.object({
+  teamId: z.string(),
+  memberId: z.string(),
+});