diff --git a/src/controllers/merchant.controllers.ts b/src/controllers/merchant.controllers.ts
index 2840499..91b5353 100644
--- a/src/controllers/merchant.controllers.ts
+++ b/src/controllers/merchant.controllers.ts
@@ -4,8 +4,10 @@ import {
   getMerchant,
   listMerchants,
   registerMerchant,
+  getMyProfile,
+  updateMyProfile,
 } from '../services/merchant.services.js';
-import { validateRegisterMerchant } from '../utils/validation.js';
+import { validateRegisterMerchant, validateUpdateMerchant } from '../utils/validation.js';
 import { AppError } from '../utils/errors.js';
 
 export const createMerchantController = async (req: Request, res: Response) => {
@@ -60,3 +62,49 @@ export const registerMerchantController = async (req: Request, res: Response): P
     res.status(500).json({ error: 'Internal Server Error' });
   }
 };
+
+export const getMyProfileController = async (req: Request, res: Response): Promise<void> => {
+  const merchant = req.merchant;
+
+  if (!merchant) {
+    res.status(401).json({ error: 'Unauthorized' });
+    return;
+  }
+
+  try {
+    const profile = await getMyProfile(merchant.id);
+    res.status(200).json(profile);
+  } catch (error) {
+    if (error instanceof AppError) {
+      res.status(error.statusCode).json({ error: error.message });
+      return;
+    }
+    res.status(500).json({ error: 'Internal Server Error' });
+  }
+};
+
+export const updateMyProfileController = async (req: Request, res: Response): Promise<void> => {
+  const merchant = req.merchant;
+
+  if (!merchant) {
+    res.status(401).json({ error: 'Unauthorized' });
+    return;
+  }
+
+  const errors = validateUpdateMerchant(req.body);
+  if (Object.keys(errors).length > 0) {
+    res.status(400).json({ error: 'Validation failed', errors });
+    return;
+  }
+
+  try {
+    const profile = await updateMyProfile(merchant.id, req.body);
+    res.status(200).json(profile);
+  } catch (error) {
+    if (error instanceof AppError) {
+      res.status(error.statusCode).json({ error: error.message });
+      return;
+    }
+    res.status(500).json({ error: 'Internal Server Error' });
+  }
+};
diff --git a/src/routes/merchant.routes.ts b/src/routes/merchant.routes.ts
index a46979c..0bcc050 100644
--- a/src/routes/merchant.routes.ts
+++ b/src/routes/merchant.routes.ts
@@ -4,6 +4,8 @@ import {
   getMerchantController,
   listMerchantsController,
   registerMerchantController,
+  getMyProfileController,
+  updateMyProfileController,
 } from '../controllers/merchant.controllers.js';
 import {
   createApiKeyController,
@@ -15,6 +17,8 @@ import { authenticateMerchant, authenticateSessionOnly } from '../middlewares/au
 const router = Router();
 
 router.post('/register', authenticateMerchant, registerMerchantController);
+router.get('/me', authenticateMerchant, getMyProfileController);
+router.patch('/me', authenticateMerchant, updateMyProfileController);
 router.post('/api-keys', authenticateSessionOnly, createApiKeyController);
 router.get('/api-keys', authenticateSessionOnly, listApiKeysController);
 router.delete('/api-keys/:id', authenticateSessionOnly, revokeApiKeyController);
diff --git a/src/services/merchant.services.ts b/src/services/merchant.services.ts
index e67607c..fad9441 100644
--- a/src/services/merchant.services.ts
+++ b/src/services/merchant.services.ts
@@ -1,7 +1,7 @@
-import { Merchant } from '@prisma/client';
+import { Merchant, Prisma } from '@prisma/client';
 import prisma from '../config/prisma.js';
 import { AppError } from '../utils/errors.js';
-import { RegisterMerchantInput } from '../utils/validation.js';
+import { RegisterMerchantInput, UpdateMerchantInput } from '../utils/validation.js';
 import { generateOtp, hashOtp } from './otp.services.js';
 import { sendOtp } from './email.service.js';
 
@@ -24,12 +24,14 @@ export const sanitizeMerchant = (merchant: Merchant) => ({
   merchantId: merchant.merchantId,
   email: merchant.email,
   address: merchant.address,
+  account: merchant.account,
   firstName: merchant.firstName,
   lastName: merchant.lastName,
   businessName: merchant.businessName,
   category: merchant.category,
   description: merchant.description,
   logo: merchant.logo,
+  webhook: merchant.webhook,
   active: merchant.active,
   verified: merchant.verified,
   emailVerified: merchant.emailVerified,
@@ -136,3 +138,49 @@ export const registerMerchant = async (merchantId: string, data: RegisterMerchan
 
   return sanitizeMerchant(updatedMerchant);
 };
+
+/**
+ * Returns the authenticated merchant's own profile.
+ */
+export const getMyProfile = async (id: string) => {
+  const merchant = await prisma.merchant.findUnique({ where: { id } });
+
+  if (!merchant) {
+    throw new AppError(404, 'Merchant not found');
+  }
+
+  return sanitizeMerchant(merchant);
+};
+
+/**
+ * Partially updates the authenticated merchant's editable profile fields.
+ *
+ * Only fields present in `data` are written. Strings are trimmed; an empty
+ * `logo`/`webhook` is normalized to null so the merchant can clear them.
+ * Non-editable fields are never read here, so they cannot be changed.
+ */
+export const updateMyProfile = async (id: string, data: UpdateMerchantInput) => {
+  const updateData: Prisma.MerchantUpdateInput = {};
+
+  const textFields = ['firstName', 'lastName', 'businessName', 'category', 'description'] as const;
+  for (const field of textFields) {
+    const value = data[field];
+    if (value !== undefined) {
+      updateData[field] = value.trim();
+    }
+  }
+
+  if (data.logo !== undefined) {
+    const logo = typeof data.logo === 'string' ? data.logo.trim() : data.logo;
+    updateData.logo = logo ? logo : null;
+  }
+
+  if (data.webhook !== undefined) {
+    const webhook = typeof data.webhook === 'string' ? data.webhook.trim() : data.webhook;
+    updateData.webhook = webhook ? webhook : null;
+  }
+
+  const updated = await prisma.merchant.update({ where: { id }, data: updateData });
+
+  return sanitizeMerchant(updated);
+};
diff --git a/src/utils/validation.ts b/src/utils/validation.ts
index 68b739a..f1eb583 100644
--- a/src/utils/validation.ts
+++ b/src/utils/validation.ts
@@ -44,3 +44,70 @@ export const validateRegisterMerchant = (body: unknown): ValidationErrors => {
 
   return errors;
 };
+
+export interface UpdateMerchantInput {
+  firstName?: string;
+  lastName?: string;
+  businessName?: string;
+  category?: string;
+  description?: string;
+  logo?: string | null;
+  webhook?: string | null;
+}
+
+const EDITABLE_MERCHANT_FIELDS = [
+  'firstName',
+  'lastName',
+  'businessName',
+  'category',
+  'description',
+  'logo',
+  'webhook',
+] as const;
+
+const UPDATE_REQUIRED_TEXT_FIELDS = [
+  'firstName',
+  'lastName',
+  'businessName',
+  'category',
+  'description',
+] as const;
+
+const isValidHttpsUrl = (value: string): boolean => {
+  try {
+    return new URL(value).protocol === 'https:';
+  } catch {
+    return false;
+  }
+};
+
+export const validateUpdateMerchant = (body: unknown): ValidationErrors => {
+  const errors: ValidationErrors = {};
+  const payload = (body ?? {}) as Record<string, unknown>;
+
+  const present = EDITABLE_MERCHANT_FIELDS.filter(field => payload[field] !== undefined);
+  if (present.length === 0) {
+    errors._empty = 'At least one valid field is required';
+    return errors;
+  }
+
+  for (const field of UPDATE_REQUIRED_TEXT_FIELDS) {
+    if (payload[field] !== undefined && !isNonEmptyString(payload[field])) {
+      errors[field] = `${field} must be a non-empty string`;
+    }
+  }
+
+  if (payload.logo !== undefined && payload.logo !== null && typeof payload.logo !== 'string') {
+    errors.logo = 'logo must be a string or null';
+  }
+
+  if (payload.webhook !== undefined && payload.webhook !== null) {
+    if (typeof payload.webhook !== 'string') {
+      errors.webhook = 'webhook must be a string or null';
+    } else if (payload.webhook.trim().length > 0 && !isValidHttpsUrl(payload.webhook.trim())) {
+      errors.webhook = 'webhook must be a valid HTTPS URL';
+    }
+  }
+
+  return errors;
+};
diff --git a/tests/integration/merchant.profile.test.ts b/tests/integration/merchant.profile.test.ts
new file mode 100644
index 0000000..4921198
--- /dev/null
+++ b/tests/integration/merchant.profile.test.ts
@@ -0,0 +1,161 @@
+import { jest } from '@jest/globals';
+import { mockReset } from 'jest-mock-extended';
+import request from 'supertest';
+
+const { default: prismaMock } = (await import('../../src/config/prisma.js')) as any;
+const { default: app } = await import('../../src/app.js');
+
+const ME_URL = '/api/v1/merchants/me';
+
+const baseMerchant = {
+  id: 'uuid-1',
+  merchantId: 1,
+  address: '0x123',
+  account: 'CCONTRACT',
+  email: 'ada@example.com',
+  firstName: 'Ada',
+  lastName: 'Lovelace',
+  businessName: 'Analytical Engines',
+  category: 'software',
+  description: 'We build computing machines.',
+  logo: null,
+  webhook: null,
+  active: true,
+  verified: false,
+  emailVerified: false,
+  registered: true,
+  createdAt: new Date().toISOString(),
+  updatedAt: new Date().toISOString(),
+  // Internal relations that the sanitizer allow-list must strip from responses.
+  refreshTokens: [{ id: 'rt-1', token: 'secret-token' }],
+  apiKeys: [{ id: 'ak-1', keyHash: 'hashed-secret' }],
+};
+
+const authenticateAs = (merchant: Record<string, unknown>) => {
+  prismaMock.refreshToken.findUnique.mockResolvedValue({
+    id: 'session-1',
+    merchantId: merchant.id,
+    token: 'valid-token',
+    expiresAt: new Date(Date.now() + 60 * 60 * 1000),
+    createdAt: new Date(),
+    merchant,
+  } as any);
+};
+
+describe('GET /api/v1/merchants/me', () => {
+  beforeEach(() => mockReset(prismaMock));
+
+  test('returns 401 when unauthenticated', async () => {
+    const response = await request(app).get(ME_URL);
+    expect(response.status).toBe(401);
+  });
+
+  test('returns 200 with the full profile and no internal fields', async () => {
+    authenticateAs(baseMerchant);
+    prismaMock.merchant.findUnique.mockResolvedValue(baseMerchant as any);
+
+    const response = await request(app).get(ME_URL).set('Authorization', 'Bearer valid-token');
+
+    expect(response.status).toBe(200);
+    expect(response.body).toMatchObject({ id: 'uuid-1', account: 'CCONTRACT', webhook: null });
+    expect(response.body).not.toHaveProperty('refreshTokens');
+    expect(response.body).not.toHaveProperty('apiKeys');
+  });
+});
+
+describe('PATCH /api/v1/merchants/me', () => {
+  beforeEach(() => mockReset(prismaMock));
+
+  test('returns 401 when unauthenticated', async () => {
+    const response = await request(app).patch(ME_URL).send({ firstName: 'Grace' });
+    expect(response.status).toBe(401);
+    expect(prismaMock.merchant.update).not.toHaveBeenCalled();
+  });
+
+  test('updates a valid partial payload and returns 200', async () => {
+    authenticateAs(baseMerchant);
+    prismaMock.merchant.update.mockImplementation(async (args: any) => ({ ...baseMerchant, ...args.data }));
+
+    const response = await request(app)
+      .patch(ME_URL)
+      .set('Authorization', 'Bearer valid-token')
+      .send({ firstName: 'Grace', webhook: 'https://example.com/hook' });
+
+    expect(response.status).toBe(200);
+    expect(response.body).toMatchObject({ firstName: 'Grace', webhook: 'https://example.com/hook' });
+  });
+
+  test('silently ignores non-editable fields (address/email/merchantId/account)', async () => {
+    authenticateAs(baseMerchant);
+    prismaMock.merchant.update.mockImplementation(async (args: any) => ({ ...baseMerchant, ...args.data }));
+
+    const response = await request(app)
+      .patch(ME_URL)
+      .set('Authorization', 'Bearer valid-token')
+      .send({
+        firstName: 'Grace',
+        address: '0xHACK',
+        email: 'evil@example.com',
+        merchantId: 999,
+        account: '0xHACKED',
+      });
+
+    expect(response.status).toBe(200);
+    const updateArg = prismaMock.merchant.update.mock.calls[0][0];
+    expect(updateArg.data).toEqual({ firstName: 'Grace' });
+    expect(response.body.address).toBe('0x123');
+    expect(response.body.email).toBe('ada@example.com');
+    expect(response.body.merchantId).toBe(1);
+    expect(response.body.account).toBe('CCONTRACT');
+  });
+
+  test('returns 400 for an invalid (non-HTTPS) webhook', async () => {
+    authenticateAs(baseMerchant);
+
+    const response = await request(app)
+      .patch(ME_URL)
+      .set('Authorization', 'Bearer valid-token')
+      .send({ webhook: 'http://example.com/hook' });
+
+    expect(response.status).toBe(400);
+    expect(response.body.error).toBe('Validation failed');
+    expect(prismaMock.merchant.update).not.toHaveBeenCalled();
+  });
+
+  test('clears the webhook when sent null', async () => {
+    authenticateAs(baseMerchant);
+    prismaMock.merchant.update.mockImplementation(async (args: any) => ({ ...baseMerchant, ...args.data }));
+
+    const response = await request(app)
+      .patch(ME_URL)
+      .set('Authorization', 'Bearer valid-token')
+      .send({ webhook: null });
+
+    expect(response.status).toBe(200);
+    expect(response.body.webhook).toBeNull();
+  });
+
+  test('returns 400 for a required text field sent empty', async () => {
+    authenticateAs(baseMerchant);
+
+    const response = await request(app)
+      .patch(ME_URL)
+      .set('Authorization', 'Bearer valid-token')
+      .send({ firstName: '' });
+
+    expect(response.status).toBe(400);
+    expect(prismaMock.merchant.update).not.toHaveBeenCalled();
+  });
+
+  test('returns 400 for an empty payload', async () => {
+    authenticateAs(baseMerchant);
+
+    const response = await request(app)
+      .patch(ME_URL)
+      .set('Authorization', 'Bearer valid-token')
+      .send({});
+
+    expect(response.status).toBe(400);
+    expect(prismaMock.merchant.update).not.toHaveBeenCalled();
+  });
+});
diff --git a/tests/unit/auth.services.test.ts b/tests/unit/auth.services.test.ts
index b19c124..145760e 100644
--- a/tests/unit/auth.services.test.ts
+++ b/tests/unit/auth.services.test.ts
@@ -18,6 +18,7 @@ jest.unstable_mockModule('@stellar/stellar-sdk', () => ({
 }));
 
 const { default: prismaMock } = await import('../../src/config/prisma.js') as any;
+const { environment } = await import('../../src/config/environment.js');
 const {
   authenticateWallet,
   createNonce,
@@ -172,7 +173,7 @@ describe('Auth Services', () => {
       expect(token.split('.')).toHaveLength(3);
 
       const jwt = await import('jsonwebtoken');
-      const decoded = jwt.default.verify(token, 'dev-jwt-secret-change-in-production');
+      const decoded = jwt.default.verify(token, environment.jwtSecret);
       expect(decoded).toMatchObject({
         sub: 'merchant-uuid',
         address: 'GABCDEF123',
diff --git a/tests/unit/merchant.profile.services.test.ts b/tests/unit/merchant.profile.services.test.ts
new file mode 100644
index 0000000..ac4983a
--- /dev/null
+++ b/tests/unit/merchant.profile.services.test.ts
@@ -0,0 +1,88 @@
+import { jest } from '@jest/globals';
+import { mockReset } from 'jest-mock-extended';
+
+const { default: prismaMock } = (await import('../../src/config/prisma.js')) as any;
+const { getMyProfile, updateMyProfile } = await import('../../src/services/merchant.services.js');
+
+const baseMerchant = {
+  id: 'uuid-1',
+  merchantId: 1,
+  address: '0x123',
+  account: 'CCONTRACT',
+  email: 'ada@example.com',
+  firstName: 'Ada',
+  lastName: 'Lovelace',
+  businessName: 'Analytical Engines',
+  category: 'software',
+  description: 'We build computing machines.',
+  logo: 'https://example.com/logo.png',
+  webhook: null,
+  active: true,
+  verified: false,
+  emailVerified: false,
+  registered: true,
+  createdAt: new Date(),
+  updatedAt: new Date(),
+  // Internal relations that the sanitizer allow-list must strip from its output.
+  refreshTokens: [{ id: 'rt-1', token: 'secret-token' }],
+  apiKeys: [{ id: 'ak-1', keyHash: 'hashed-secret' }],
+};
+
+describe('getMyProfile', () => {
+  beforeEach(() => mockReset(prismaMock));
+
+  test('returns the sanitized profile including account and webhook', async () => {
+    prismaMock.merchant.findUnique.mockResolvedValue(baseMerchant);
+
+    const result = await getMyProfile('uuid-1');
+
+    expect(prismaMock.merchant.findUnique).toHaveBeenCalledWith({ where: { id: 'uuid-1' } });
+    expect(result).toMatchObject({ id: 'uuid-1', account: 'CCONTRACT', webhook: null });
+    expect(result).not.toHaveProperty('refreshTokens');
+    expect(result).not.toHaveProperty('apiKeys');
+  });
+
+  test('throws AppError(404) when the merchant does not exist', async () => {
+    prismaMock.merchant.findUnique.mockResolvedValue(null);
+
+    await expect(getMyProfile('missing')).rejects.toMatchObject({ statusCode: 404 });
+  });
+});
+
+describe('updateMyProfile', () => {
+  beforeEach(() => mockReset(prismaMock));
+
+  test('writes only the editable fields present in the payload, trimmed', async () => {
+    prismaMock.merchant.update.mockImplementation(async (args: any) => ({ ...baseMerchant, ...args.data }));
+
+    await updateMyProfile('uuid-1', {
+      firstName: '  Grace  ',
+      webhook: 'https://example.com/hook',
+    });
+
+    expect(prismaMock.merchant.update).toHaveBeenCalledWith({
+      where: { id: 'uuid-1' },
+      data: { firstName: 'Grace', webhook: 'https://example.com/hook' },
+    });
+  });
+
+  test('normalizes a cleared logo/webhook to null', async () => {
+    prismaMock.merchant.update.mockImplementation(async (args: any) => ({ ...baseMerchant, ...args.data }));
+
+    await updateMyProfile('uuid-1', { logo: '', webhook: null });
+
+    expect(prismaMock.merchant.update).toHaveBeenCalledWith({
+      where: { id: 'uuid-1' },
+      data: { logo: null, webhook: null },
+    });
+  });
+
+  test('returns the sanitized updated profile', async () => {
+    prismaMock.merchant.update.mockImplementation(async (args: any) => ({ ...baseMerchant, ...args.data }));
+
+    const result = await updateMyProfile('uuid-1', { businessName: 'New Co' });
+
+    expect(result).toMatchObject({ businessName: 'New Co' });
+    expect(result).not.toHaveProperty('refreshTokens');
+  });
+});
diff --git a/tests/unit/merchant.update.validation.test.ts b/tests/unit/merchant.update.validation.test.ts
new file mode 100644
index 0000000..501092d
--- /dev/null
+++ b/tests/unit/merchant.update.validation.test.ts
@@ -0,0 +1,53 @@
+import { validateUpdateMerchant } from '../../src/utils/validation.js';
+
+describe('validateUpdateMerchant', () => {
+  test('accepts a valid partial payload', () => {
+    expect(validateUpdateMerchant({ firstName: 'Ada' })).toEqual({});
+  });
+
+  test('rejects an empty payload (no editable fields)', () => {
+    const errors = validateUpdateMerchant({});
+    expect(errors._empty).toEqual(expect.any(String));
+  });
+
+  test('treats a payload of only non-editable fields as empty', () => {
+    const errors = validateUpdateMerchant({ address: '0xabc', email: 'x@y.com', merchantId: 5 });
+    expect(errors._empty).toEqual(expect.any(String));
+  });
+
+  test('rejects a required text field sent as empty string', () => {
+    const errors = validateUpdateMerchant({ firstName: '   ' });
+    expect(errors.firstName).toEqual(expect.any(String));
+  });
+
+  test('accepts logo and webhook cleared with null', () => {
+    expect(validateUpdateMerchant({ logo: null, webhook: null })).toEqual({});
+  });
+
+  test('accepts an empty string logo as a clear', () => {
+    expect(validateUpdateMerchant({ logo: '' })).toEqual({});
+  });
+
+  test('accepts an empty string webhook as a clear', () => {
+    expect(validateUpdateMerchant({ webhook: '' })).toEqual({});
+  });
+
+  test('rejects a non-HTTPS webhook URL', () => {
+    const errors = validateUpdateMerchant({ webhook: 'http://example.com/hook' });
+    expect(errors.webhook).toEqual(expect.any(String));
+  });
+
+  test('rejects a malformed webhook URL', () => {
+    const errors = validateUpdateMerchant({ webhook: 'not-a-url' });
+    expect(errors.webhook).toEqual(expect.any(String));
+  });
+
+  test('accepts a valid HTTPS webhook URL', () => {
+    expect(validateUpdateMerchant({ webhook: 'https://example.com/hook' })).toEqual({});
+  });
+
+  test('rejects a non-string logo', () => {
+    const errors = validateUpdateMerchant({ logo: 123 });
+    expect(errors.logo).toEqual(expect.any(String));
+  });
+});