diff --git a/.github/workflows/events-contract.yml b/.github/workflows/events-contract.yml
new file mode 100644
index 0000000..6f1f1b8
--- /dev/null
+++ b/.github/workflows/events-contract.yml
@@ -0,0 +1,31 @@
+name: events contract
+
+# Anti-drift guard for the events contract (CRM-316): the catalog is mirrored by
+# the CRM and the frontend, and the schema pipe decides what the CRM may emit.
+# Nothing else ran src/modules/events, so a broken mirror only showed up as 400s
+# in the producer's Sidekiq log. In-process: no broker, no DB.
+
+on:
+  pull_request:
+    branches: [main, develop]
+    paths:
+      - 'src/modules/events/**'
+      - '.github/workflows/events-contract.yml'
+  push:
+    branches: [main, develop]
+    paths:
+      - 'src/modules/events/**'
+      - '.github/workflows/events-contract.yml'
+
+jobs:
+  events-contract:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+      - name: Install dependencies
+        run: npm ci
+      - name: Events catalog + schema pipe specs
+        run: npx jest --runInBand src/modules/events
diff --git a/src/modules/events/event-names.enum.ts b/src/modules/events/event-names.enum.ts
index f15c183..10a5694 100644
--- a/src/modules/events/event-names.enum.ts
+++ b/src/modules/events/event-names.enum.ts
@@ -28,6 +28,7 @@ export const EVENT_NAMES = [
   'campaign.message.opened',
   'campaign.message.clicked',
   'pipeline.stage_changed',
+  'purchase.approved',
   'custom',
 ] as const;
 
diff --git a/src/modules/events/manifest/event-catalog.spec.ts b/src/modules/events/manifest/event-catalog.spec.ts
index c81e8ca..acd9b52 100644
--- a/src/modules/events/manifest/event-catalog.spec.ts
+++ b/src/modules/events/manifest/event-catalog.spec.ts
@@ -35,6 +35,28 @@ describe('events manifest catalog', () => {
     expect(custom?.schema.optional).toEqual({});
   });
 
+  // CRM-316: the purchase captured by the CRM webhook is a first-class event,
+  // in its own category, with the fields a journey trigger / segment filters on.
+  it('exposes purchase.approved as a track event in the purchase category', () => {
+    const entry = getEvent('purchase.approved');
+    expect(entry).toBeDefined();
+    expect(entry?.category).toBe('purchase');
+    expect(entry?.dtoType).toBe('track');
+    expect(Object.keys(entry!.schema.required).sort()).toEqual([
+      'pipeline_id',
+      'pipeline_item_id',
+      'provider',
+      'purchase_id',
+      'source',
+    ]);
+    expect(entry?.schema.optional.amount.type).toBe('number');
+    expect(entry?.schema.optional.product.type).toBe('string');
+    expect(EVENT_CATEGORIES).toContain('purchase');
+    expect(getEventsByCategory('purchase').map((e) => e.eventName)).toEqual([
+      'purchase.approved',
+    ]);
+  });
+
   it('returns undefined for an unknown event name', () => {
     expect(getEvent('not.a.real.event')).toBeUndefined();
   });
diff --git a/src/modules/events/manifest/event-catalog.ts b/src/modules/events/manifest/event-catalog.ts
index 3805715..f35f5d9 100644
--- a/src/modules/events/manifest/event-catalog.ts
+++ b/src/modules/events/manifest/event-catalog.ts
@@ -383,6 +383,45 @@ const ENTRIES: EventCatalogEntry[] = [
       },
     },
   },
+  // CRM-316: capture of POST /api/v1/webhooks/purchases/:provider, with the
+  // contact the CRM resolved — a journey starts on "bought X", a segment
+  // filters "spent more than Y".
+  {
+    eventName: 'purchase.approved',
+    category: 'purchase',
+    dtoType: 'track',
+    labelPt: 'Compra aprovada',
+    labelEn: 'Purchase approved',
+    description:
+      'A purchase was approved on a payment platform and captured as a lead in the CRM.',
+    schema: {
+      required: {
+        provider: f(
+          'string',
+          'Payment platform key (virtu, hotmart, kiwify, cakto)',
+        ),
+        purchase_id: f('string', 'Purchase/order id on the platform'),
+        pipeline_id: f('uuid'),
+        pipeline_item_id: f('uuid', 'Card that holds the purchase'),
+        source: f('string'),
+      },
+      optional: {
+        product: f('string'),
+        amount: f(
+          'number',
+          'Currency major unit (e.g. 197.5 reais), never cents',
+        ),
+        currency: f('string'),
+        platform_event: f('string', 'Event name as the platform sent it'),
+        outcome: f('string', 'created | already_in_pipeline'),
+        new_contact: f('boolean', 'Whether the purchase created the contact'),
+        contact_id: f('uuid'),
+        pipeline_name: f('string'),
+        pipeline_stage_id: f('uuid'),
+        pipeline_stage_name: f('string'),
+      },
+    },
+  },
   {
     eventName: 'custom',
     category: 'custom',
@@ -402,6 +441,7 @@ export const EVENT_CATEGORIES: readonly EventCategory[] = [
   'conversation',
   'message',
   'campaign',
+  'purchase',
   'custom',
 ] as const;
 
diff --git a/src/modules/events/manifest/event-schema.types.ts b/src/modules/events/manifest/event-schema.types.ts
index 89b8fe3..2fea64d 100644
--- a/src/modules/events/manifest/event-schema.types.ts
+++ b/src/modules/events/manifest/event-schema.types.ts
@@ -12,7 +12,7 @@ export interface EventSchema {
   optional: Record<string, FieldSpec>;
 }
 
-export type EventCategory = 'contact' | 'conversation' | 'message' | 'campaign' | 'custom';
+export type EventCategory = 'contact' | 'conversation' | 'message' | 'campaign' | 'purchase' | 'custom';
 
 export type EventDtoType = 'track' | 'identify';
 
diff --git a/src/modules/events/pipes/event-schema-validation.pipe.spec.ts b/src/modules/events/pipes/event-schema-validation.pipe.spec.ts
index a5b03e9..845622a 100644
--- a/src/modules/events/pipes/event-schema-validation.pipe.spec.ts
+++ b/src/modules/events/pipes/event-schema-validation.pipe.spec.ts
@@ -21,6 +21,49 @@ describe('EventSchemaValidationPipe', () => {
     expect(pipe.transform(value, bodyMetadata)).toBe(value);
   });
 
+  // CRM-316: the payload the CRM emits for an approved purchase, as-is.
+  describe('purchase.approved (CRM-316)', () => {
+    const purchase = {
+      messageId: 'purchase.approved:c1:virtu.ord-1',
+      contactId: '550e8400-e29b-41d4-a716-446655440001',
+      event: 'purchase.approved',
+      properties: {
+        provider: 'virtu',
+        purchase_id: 'ord-1',
+        pipeline_id: '550e8400-e29b-41d4-a716-446655440002',
+        pipeline_item_id: '550e8400-e29b-41d4-a716-446655440003',
+        source: 'purchase_webhook',
+        product: 'Curso X',
+        amount: 297.9,
+        currency: 'BRL',
+        outcome: 'created',
+        new_contact: true,
+      },
+    };
+
+    it('accepts the CRM payload with a numeric amount', () => {
+      expect(pipe.transform(purchase, bodyMetadata)).toBe(purchase);
+    });
+
+    it('rejects a purchase without purchase_id', () => {
+      const rest: Record<string, unknown> = { ...purchase.properties };
+      delete rest.purchase_id;
+      expect(() =>
+        pipe.transform({ ...purchase, properties: rest }, bodyMetadata),
+      ).toThrow(BadRequestException);
+    });
+
+    it('rejects a string amount (the CRM must send a number)', () => {
+      const value = {
+        ...purchase,
+        properties: { ...purchase.properties, amount: '297.90' },
+      };
+      expect(() => pipe.transform(value, bodyMetadata)).toThrow(
+        BadRequestException,
+      );
+    });
+  });
+
   describe('AC3 — required field validation (track path)', () => {
     it('rejects message.delivered without message_id with MissingRequiredField', () => {
       const value = {