diff --git a/backend/__tests__/integration/eventTypeDefaults.test.js b/backend/__tests__/integration/eventTypeDefaults.test.js
new file mode 100644
index 00000000..1c0a3c53
--- /dev/null
+++ b/backend/__tests__/integration/eventTypeDefaults.test.js
@@ -0,0 +1,50 @@
+/**
+ * Catalog-driven event-type defaults (#800 follow-up).
+ *
+ * The contract→event conversion used to hardcode `event_type: 'wedding'` and
+ * the v1 API validated against a fixed whitelist. Both now follow the live
+ * event_types catalog; these tests pin the shared resolver.
+ */
+
+const { bootCrmDb } = require('./helpers/crmDb');
+
+describe('resolveDefaultEventType follows the catalog', () => {
+  let db;
+  let cleanup;
+  let eventTypeService;
+
+  beforeAll(async () => {
+    ({ db, cleanup } = await bootCrmDb());
+    // Require AFTER bootCrmDb so the service shares this db instance
+    // (see crmDb.js — a second knex pool on one SQLite file deadlocks).
+    eventTypeService = require('../../src/services/eventTypeService');
+  }, 120000);
+
+  afterAll(async () => {
+    if (cleanup) await cleanup();
+  });
+
+  it("prefers the 'other' catch-all while it is active", async () => {
+    expect(await eventTypeService.resolveDefaultEventType()).toBe('other');
+  });
+
+  it('falls over to the first active type when other is deactivated', async () => {
+    const other = await db('event_types').where({ slug_prefix: 'other' }).first();
+    await db('event_types').where({ id: other.id }).update({ is_active: 0 });
+
+    const resolved = await eventTypeService.resolveDefaultEventType();
+    expect(resolved).not.toBe('other');
+    expect(await db('event_types').where({ slug_prefix: resolved }).first()).toBeTruthy();
+
+    await db('event_types').where({ id: other.id }).update({ is_active: 1 });
+  });
+
+  it("returns the literal 'other' only for an empty catalog", async () => {
+    const rows = await db('event_types').select('*');
+    await db('event_types').del();
+
+    expect(await eventTypeService.resolveDefaultEventType()).toBe('other');
+
+    await db('event_types').insert(rows);
+  });
+});
diff --git a/backend/src/routes/v1/__tests__/events.create.test.js b/backend/src/routes/v1/__tests__/events.create.test.js
index a47b1daf..c40d6724 100644
--- a/backend/src/routes/v1/__tests__/events.create.test.js
+++ b/backend/src/routes/v1/__tests__/events.create.test.js
@@ -80,7 +80,16 @@ jest.mock('../../../services/webhookService', () => ({
   buildEventSubject: jest.fn().mockReturnValue({}),
 }));
 
+// event_type is validated against the live event_types catalog (#800) —
+// that lookup would consume the first queued db() chain and shift the
+// call sequence these tests pin. Stub it valid; the invalid path has its
+// own test below.
+jest.mock('../../../services/eventTypeService', () => ({
+  isValidEventType: jest.fn().mockResolvedValue(true),
+}));
+
 const { db } = require('../../../database/db');
+const { isValidEventType } = require('../../../services/eventTypeService');
 const eventsRouter = require('../events');
 
 const buildApp = () => {
@@ -231,4 +240,16 @@ describe('v1 POST /events — issue #550 (color_theme + feedback row)', () => {
       .send({ ...BASE_BODY, feedback_enabled: 'maybe' })
       .expect(400);
   });
+
+  it('rejects an event_type unknown to the catalog with 400 (#800)', async () => {
+    isValidEventType.mockResolvedValueOnce(false);
+    const res = await request(buildApp())
+      .post('/events')
+      .send({ ...BASE_BODY, event_type: 'nope' })
+      .expect(400);
+
+    expect(isValidEventType).toHaveBeenCalledWith('nope');
+    expect(JSON.stringify(res.body.errors)).toContain('event_type');
+    expect(db).not.toHaveBeenCalled();
+  });
 });
diff --git a/backend/src/routes/v1/events.js b/backend/src/routes/v1/events.js
index 22a19b25..0cba9a97 100644
--- a/backend/src/routes/v1/events.js
+++ b/backend/src/routes/v1/events.js
@@ -26,6 +26,7 @@ const logger = require('../../utils/logger');
 const { slugify } = require('../../utils/slug');
 const { formatBoolean } = require('../../utils/dbCompat');
 const { parseBooleanInput } = require('../../utils/parsers');
+const { isValidEventType } = require('../../services/eventTypeService');
 
 const router = express.Router();
 
@@ -80,7 +81,7 @@ const photoUpload = multer({
  *               event_name: { type: string }
  *               event_type:
  *                 type: string
- *                 enum: [wedding, birthday, corporate, other, family]
+ *                 description: "Slug of an active event type from the catalog (Settings → Event Types). Defaults on a fresh install: wedding, birthday, corporate, other. GET /api/v1/event-types lists the live values."
  *               event_date: { type: string, format: date, nullable: true }
  *               customer_name: { type: string, nullable: true }
  *               customer_email: { type: string, format: email, nullable: true }
@@ -117,7 +118,14 @@ router.post(
   requireApiScope('admin'),
   [
     body('event_name').isString().trim().notEmpty(),
-    body('event_type').isIn(['wedding', 'birthday', 'corporate', 'other', 'family']),
+    // Validate against the live event_types catalog (admins can rename/delete
+    // the defaults and add custom types), not a hardcoded whitelist (#800).
+    body('event_type').isString().trim().notEmpty().bail().custom(async (value) => {
+      if (!(await isValidEventType(value))) {
+        throw new Error('Unknown event type — must match an active event type slug');
+      }
+      return true;
+    }),
     body('event_date').optional({ nullable: true, checkFalsy: true }).isISO8601(),
     body('customer_name').optional({ nullable: true }).isString(),
     body('customer_email').optional({ nullable: true, checkFalsy: true }).isEmail(),
@@ -447,6 +455,48 @@ router.get(
   }
 );
 
+// ──────────────────────────────────────────────────────────────────────────
+// GET /event-types — read (catalog discovery for event creation, #800)
+// ──────────────────────────────────────────────────────────────────────────
+
+/**
+ * @openapi
+ * /event-types:
+ *   get:
+ *     tags: [Events]
+ *     summary: List active event types
+ *     description: The slugs accepted as `event_type` when creating events. The catalog is admin-customizable (Settings → Event Types), so integrations should discover values here instead of hardcoding them.
+ *     security: [{ bearerAuth: [] }]
+ *     responses:
+ *       200:
+ *         description: Active event types
+ *         content:
+ *           application/json:
+ *             schema:
+ *               type: object
+ *               properties:
+ *                 eventTypes:
+ *                   type: array
+ *                   items:
+ *                     type: object
+ *                     properties:
+ *                       slug_prefix: { type: string }
+ *                       name: { type: string }
+ *                       emoji: { type: string }
+ */
+router.get('/event-types', apiTokenAuth, requireApiScope('read'), async (req, res) => {
+  try {
+    const types = await db('event_types')
+      .where('is_active', formatBoolean(true))
+      .orderBy('display_order', 'asc')
+      .select('slug_prefix', 'name', 'emoji');
+    res.json({ eventTypes: types });
+  } catch (error) {
+    logger.error('v1 GET /event-types failed', { error: error.message });
+    res.status(500).json({ error: 'Failed to list event types' });
+  }
+});
+
 // ──────────────────────────────────────────────────────────────────────────
 // GET /events/:id — read
 // ──────────────────────────────────────────────────────────────────────────
diff --git a/backend/src/services/contract/conversions.js b/backend/src/services/contract/conversions.js
index 23230383..2b3548cb 100644
--- a/backend/src/services/contract/conversions.js
+++ b/backend/src/services/contract/conversions.js
@@ -11,6 +11,7 @@ const businessProfileService = require('../businessProfileService');
 const { ensureSystemBlocksSeeded } = require('../contractBlocksService');
 const { ensureInt } = require('../../utils/numericHelpers');
 const { adminActor, ensureCustomerActive, nextContractNumber } = require('./helpers');
+const { resolveDefaultEventType } = require('../eventTypeService');
 
 
 /**
@@ -221,6 +222,12 @@ async function convertToEvent(contractId, adminId) {
   const placeholderHash = crypto.randomBytes(32).toString('hex');
   const shareToken = crypto.randomBytes(32).toString('hex');
 
+  // Event type: the configurable org default, else the resolved catch-all —
+  // same chain as quoteService.convertToEvent. Never a hardcoded slug: the
+  // admin may have renamed or deleted 'wedding' (#800).
+  const eventType = (await getAppSetting('crm_default_event_type'))
+    || (await resolveDefaultEventType());
+
   const eventCols = await db('events').columnInfo();
   const candidate = {
     slug: `contract-${contract.contract_number.toLowerCase()}-${crypto.randomBytes(3).toString('hex')}`,
@@ -236,7 +243,7 @@ async function convertToEvent(contractId, adminId) {
     customer_email: customerEmail,
     customer_phone: customer.phone,
     admin_email: adminEmail,
-    event_type: 'wedding',
+    event_type: eventType,
     password_hash: placeholderHash,
     share_link: shareToken,
     share_token: shareToken,
diff --git a/backend/src/services/eventTypeService.js b/backend/src/services/eventTypeService.js
index a7d26798..4990563f 100644
--- a/backend/src/services/eventTypeService.js
+++ b/backend/src/services/eventTypeService.js
@@ -428,6 +428,28 @@ const getEventTypeForSlug = async (eventTypeIdentifier) => {
   return { slug_prefix: 'event', theme_preset: 'default', emoji: '📷' };
 };
 
+/**
+ * Resolve the fallback event type for document→event conversions (quotes,
+ * contracts) when the source carries none. Never hardcodes a specific slug
+ * (any of them, incl. 'other', can be disabled by the admin): prefer the
+ * generic 'other' catch-all when it's active, else the first active type by
+ * display order, and only fall back to the literal 'other' if the catalog is
+ * somehow empty/unreadable.
+ * @param {Object} [conn] - Optional knex connection/transaction
+ * @returns {Promise<string>} - slug_prefix to use
+ */
+const resolveDefaultEventType = async (conn) => {
+  const q = conn || db;
+  try {
+    const other = await q('event_types').where({ slug_prefix: 'other', is_active: formatBoolean(true) }).first('slug_prefix');
+    if (other) return 'other';
+    const firstActive = await q('event_types').where({ is_active: formatBoolean(true) }).orderBy('display_order', 'asc').first('slug_prefix');
+    return firstActive?.slug_prefix || 'other';
+  } catch (_) {
+    return 'other';
+  }
+};
+
 module.exports = {
   getAllEventTypes,
   getActiveEventTypes,
@@ -439,5 +461,6 @@ module.exports = {
   updateEventType,
   deleteEventType,
   reorderEventTypes,
-  getEventTypeForSlug
+  getEventTypeForSlug,
+  resolveDefaultEventType
 };
diff --git a/backend/src/services/quoteService.js b/backend/src/services/quoteService.js
index d2fd5dc5..91f7d906 100644
--- a/backend/src/services/quoteService.js
+++ b/backend/src/services/quoteService.js
@@ -34,6 +34,7 @@ const { cleanNetMinor } = require('../utils/invoiceRounding');
 const { AppError } = require('../utils/errors');
 const { formatBoolean } = require('../utils/dbCompat');
 const { nextDocumentNumber } = require('../utils/documentSequences');
+const { resolveDefaultEventType } = require('./eventTypeService');
 const { formatShortDate } = require('../utils/dateFormatter');
 const businessProfileService = require('./businessProfileService');
 const { buildIssuerBlock, buildRecipientBlock } = require('./_renderContext');
@@ -308,25 +309,6 @@ async function nextQuoteNumber(trx) {
   return nextDocumentNumber('quote', 'crm_quotes_number_format', 'Q-{YEAR}-{SEQ:04d}', trx);
 }
 
-/**
- * Resolve the fallback event type for a quote→event conversion when the quote
- * itself carries none. Never hardcodes a specific slug (any of them, incl.
- * 'other', can be disabled by the admin): prefer the generic 'other' catch-all
- * when it's active, else the first active type by display order, and only fall
- * back to the literal 'other' if the catalog is somehow empty/unreadable.
- */
-async function resolveDefaultEventType(conn) {
-  const q = conn || db;
-  try {
-    const other = await q('event_types').where({ slug_prefix: 'other', is_active: true }).first('slug_prefix');
-    if (other) return 'other';
-    const firstActive = await q('event_types').where({ is_active: true }).orderBy('display_order', 'asc').first('slug_prefix');
-    return firstActive?.slug_prefix || 'other';
-  } catch (_) {
-    return 'other';
-  }
-}
-
 function ensureCustomerFeatureEnabled(customer, feature) {
   // Global toggle (`customer_feature_quotes_enabled` / `..._bills_enabled`)
   // is checked at the route layer (feature flag); here we only enforce