diff --git a/src/index.ts b/src/index.ts
index b5942c6..4687b5f 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -131,8 +131,12 @@ import {
 import {
   listContactsSchema,
   getContactSchema,
+  createContactSchema,
+  updateContactSchema,
   listContacts,
   getContact,
+  createContact,
+  updateContact,
   formatContactsList,
   formatContact,
 } from "./tools/contacts.js";
@@ -339,6 +343,30 @@ server.tool(
   }
 );
 
+server.tool(
+  "moco_create_contact",
+  "Create a new contact person in MOCO. Requires last name and gender. Optionally associate with a company.",
+  createContactSchema,
+  async (params) => {
+    const contact = await createContact(params);
+    return {
+      content: [{ type: "text", text: `Contact created successfully.\n\n${formatContact(contact)}` }],
+    };
+  }
+);
+
+server.tool(
+  "moco_update_contact",
+  "Update an existing contact person in MOCO by ID. All fields except ID are optional.",
+  updateContactSchema,
+  async (params) => {
+    const contact = await updateContact(params);
+    return {
+      content: [{ type: "text", text: `Contact updated successfully.\n\n${formatContact(contact)}` }],
+    };
+  }
+);
+
 // ============ UNIT TOOLS ============
 
 server.tool(
diff --git a/src/tools/contacts.ts b/src/tools/contacts.ts
index 0f39aab..7767c30 100644
--- a/src/tools/contacts.ts
+++ b/src/tools/contacts.ts
@@ -1,5 +1,5 @@
 import { z } from "zod";
-import { mocoFetch } from "../api.js";
+import { mocoFetch, mocoPost, mocoPut } from "../api.js";
 import type { Contact } from "../types.js";
 
 // Schema for list contacts
@@ -10,12 +10,77 @@ export const listContactsSchema = {
   per_page: z.number().optional().describe("Items per page (default: 100, max: 100)"),
 };
 
+// Schema for create contact
+export const createContactSchema = {
+  lastname: z.string().describe("Last name"),
+  gender: z.enum(["F", "M", "U"]).describe('Gender: "F", "M", or "U"'),
+  firstname: z.string().optional().describe("First name"),
+  company_id: z.number().optional().describe("Associated company ID"),
+  user_id: z.number().optional().describe("Responsible user ID (defaults to current user)"),
+  title: z.string().optional().describe("Title, e.g. \"Dr. med.\""),
+  job_position: z.string().optional().describe("Job position"),
+  mobile_phone: z.string().optional().describe("Mobile phone number"),
+  work_fax: z.string().optional().describe("Work fax number"),
+  work_phone: z.string().optional().describe("Work phone number"),
+  work_email: z.string().optional().describe("Work email address"),
+  work_address: z.string().optional().describe("Work address"),
+  home_email: z.string().optional().describe("Home email address"),
+  home_address: z.string().optional().describe("Home address"),
+  birthday: z.string().optional().describe("Birthday in YYYY-MM-DD format"),
+  info: z.string().optional().describe("Additional information/notes"),
+  tags: z.array(z.string()).optional().describe("List of tags"),
+};
+
+// Schema for update contact
+export const updateContactSchema = {
+  id: z.number().describe("Contact ID"),
+  lastname: z.string().optional().describe("Last name"),
+  gender: z.enum(["F", "M", "U"]).optional().describe('Gender: "F", "M", or "U"'),
+  firstname: z.string().optional().describe("First name"),
+  company_id: z.number().optional().describe("Associated company ID"),
+  user_id: z.number().optional().describe("Responsible user ID"),
+  title: z.string().optional().describe("Title"),
+  job_position: z.string().optional().describe("Job position"),
+  mobile_phone: z.string().optional().describe("Mobile phone number"),
+  work_fax: z.string().optional().describe("Work fax number"),
+  work_phone: z.string().optional().describe("Work phone number"),
+  work_email: z.string().optional().describe("Work email address"),
+  work_address: z.string().optional().describe("Work address"),
+  home_email: z.string().optional().describe("Home email address"),
+  home_address: z.string().optional().describe("Home address"),
+  birthday: z.string().optional().describe("Birthday in YYYY-MM-DD format"),
+  info: z.string().optional().describe("Additional information/notes"),
+  tags: z.array(z.string()).optional().describe("List of tags"),
+};
+
 // Schema for get single contact
 export const getContactSchema = {
   id: z.number().describe("Contact ID"),
 };
 
 // Types for parameters
+export type CreateContactParams = {
+  lastname: string;
+  gender: "F" | "M" | "U";
+  firstname?: string;
+  company_id?: number;
+  user_id?: number;
+  title?: string;
+  job_position?: string;
+  mobile_phone?: string;
+  work_fax?: string;
+  work_phone?: string;
+  work_email?: string;
+  work_address?: string;
+  home_email?: string;
+  home_address?: string;
+  birthday?: string;
+  info?: string;
+  tags?: string[];
+};
+
+export type UpdateContactParams = Partial<CreateContactParams> & { id: number };
+
 export type ListContactsParams = {
   tags?: string;
   term?: string;
@@ -28,6 +93,14 @@ export type GetContactParams = {
 };
 
 // API functions
+export async function createContact(params: CreateContactParams): Promise<Contact> {
+  return mocoPost<Contact>("/contacts/people", params);
+}
+
+export async function updateContact({ id, ...params }: UpdateContactParams): Promise<Contact> {
+  return mocoPut<Contact>(`/contacts/people/${id}`, params);
+}
+
 export async function listContacts(params: ListContactsParams): Promise<Contact[]> {
   return mocoFetch<Contact[]>("/contacts/people", params);
 }