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convex-quickstart

Name: Convex Quickstart
Author: get-convex

// Initialize a new Convex backend from scratch with schema, auth, and basic CRUD operations. Use when starting a new project or adding Convex to an existing app.

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updated:5 de fevereiro de 2026 às 18:37

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package.json

"author": "get-convex"

"repository": "get-convex/convex-agent-plugins"

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Desenvolvedores de softwareInformática e Matemática15-1252L4

name	convex-quickstart
description	Initialize a new Convex backend from scratch with schema, auth, and basic CRUD operations. Use when starting a new project or adding Convex to an existing app.

Convex Quickstart

Get a production-ready Convex backend set up in minutes. This skill guides you through initializing Convex, creating your schema, setting up auth, and building your first CRUD operations.

When to Use

Starting a brand new project with Convex
Adding Convex to an existing React/Next.js app
Prototyping a new feature with real-time data
Converting from another backend to Convex
Teaching someone Convex for the first time

Prerequisites Check

Before starting, verify:

node --version  # v18 or higher
npm --version   # v8 or higher

Quick Start Flow

Step 1: Install and Initialize

# Install Convex
npm install convex

# Initialize (creates convex/ directory)
npx convex dev

This command:

Creates convex/ directory
Sets up authentication
Starts development server
Generates TypeScript types

Step 2: Create Schema

Create convex/schema.ts:

import { defineSchema, defineTable } from "convex/server";
import { v } from "convex/values";

export default defineSchema({
  users: defineTable({
    tokenIdentifier: v.string(),
    name: v.string(),
    email: v.string(),
  }).index("by_token", ["tokenIdentifier"]),

  // Add your tables here
  // Example: Tasks table
  tasks: defineTable({
    userId: v.id("users"),
    title: v.string(),
    completed: v.boolean(),
    createdAt: v.number(),
  })
    .index("by_user", ["userId"])
    .index("by_user_and_completed", ["userId", "completed"]),
});

Step 3: Set Up Authentication

We'll use WorkOS AuthKit, which provides a complete auth solution with minimal setup.

npm install @workos-inc/authkit-react

For React/Vite Apps:

// src/main.tsx
import { AuthKitProvider, useAuth } from "@workos-inc/authkit-react";
import { ConvexReactClient } from "convex/react";
import { ConvexProvider } from "convex/react";

const convex = new ConvexReactClient(import.meta.env.VITE_CONVEX_URL);

// Configure Convex to use WorkOS auth
convex.setAuth(useAuth);

function App() {
  return (
    <AuthKitProvider clientId={import.meta.env.VITE_WORKOS_CLIENT_ID}>
      <ConvexProvider client={convex}>
        <YourApp />
      </ConvexProvider>
    </AuthKitProvider>
  );
}

For Next.js Apps:

npm install @workos-inc/authkit-nextjs

// app/layout.tsx
import { AuthKitProvider } from "@workos-inc/authkit-nextjs";
import { ConvexClientProvider } from "./ConvexClientProvider";

export default function RootLayout({ children }: { children: React.ReactNode }) {
  return (
    <html>
      <body>
        <AuthKitProvider>
          <ConvexClientProvider>
            {children}
          </ConvexClientProvider>
        </AuthKitProvider>
      </body>
    </html>
  );
}

// app/ConvexClientProvider.tsx
"use client";

import { ConvexReactClient } from "convex/react";
import { ConvexProvider } from "convex/react";
import { useAuth } from "@workos-inc/authkit-nextjs";

const convex = new ConvexReactClient(process.env.NEXT_PUBLIC_CONVEX_URL!);

export function ConvexClientProvider({ children }: { children: React.ReactNode }) {
  const { getToken } = useAuth();

  convex.setAuth(async () => {
    return await getToken();
  });

  return <ConvexProvider client={convex}>{children}</ConvexProvider>;
}

Environment Variables:

# .env.local
VITE_CONVEX_URL=https://your-deployment.convex.cloud
VITE_WORKOS_CLIENT_ID=your_workos_client_id

# For Next.js:
NEXT_PUBLIC_CONVEX_URL=https://your-deployment.convex.cloud
NEXT_PUBLIC_WORKOS_CLIENT_ID=your_workos_client_id
WORKOS_API_KEY=your_workos_api_key
WORKOS_COOKIE_PASSWORD=generate_a_random_32_character_string

Alternative auth providers: If you need to use a different provider (Clerk, Auth0, custom JWT), see the Convex auth documentation.

Step 4: Create Auth Helpers

Create convex/lib/auth.ts:

import { QueryCtx, MutationCtx } from "../_generated/server";
import { Doc } from "../_generated/dataModel";

export async function getCurrentUser(
  ctx: QueryCtx | MutationCtx
): Promise<Doc<"users">> {
  const identity = await ctx.auth.getUserIdentity();
  if (!identity) {
    throw new Error("Not authenticated");
  }

  const user = await ctx.db
    .query("users")
    .withIndex("by_token", q =>
      q.eq("tokenIdentifier", identity.tokenIdentifier)
    )
    .unique();

  if (!user) {
    throw new Error("User not found");
  }

  return user;
}

Create convex/users.ts:

import { mutation } from "./_generated/server";

export const store = mutation({
  args: {},
  handler: async (ctx) => {
    const identity = await ctx.auth.getUserIdentity();
    if (!identity) throw new Error("Not authenticated");

    const existing = await ctx.db
      .query("users")
      .withIndex("by_token", q =>
        q.eq("tokenIdentifier", identity.tokenIdentifier)
      )
      .unique();

    if (existing) return existing._id;

    return await ctx.db.insert("users", {
      tokenIdentifier: identity.tokenIdentifier,
      name: identity.name ?? "Anonymous",
      email: identity.email ?? "",
    });
  },
});

Step 5: Create Your First CRUD Operations

Create convex/tasks.ts:

import { query, mutation } from "./_generated/server";
import { v } from "convex/values";
import { getCurrentUser } from "./lib/auth";

// List all tasks for current user
export const list = query({
  args: {},
  handler: async (ctx) => {
    const user = await getCurrentUser(ctx);
    return await ctx.db
      .query("tasks")
      .withIndex("by_user", q => q.eq("userId", user._id))
      .order("desc")
      .collect();
  },
});

// Get a single task
export const get = query({
  args: { taskId: v.id("tasks") },
  handler: async (ctx, args) => {
    const user = await getCurrentUser(ctx);
    const task = await ctx.db.get(args.taskId);

    if (!task) throw new Error("Task not found");
    if (task.userId !== user._id) throw new Error("Unauthorized");

    return task;
  },
});

// Create a task
export const create = mutation({
  args: { title: v.string() },
  handler: async (ctx, args) => {
    const user = await getCurrentUser(ctx);
    return await ctx.db.insert("tasks", {
      userId: user._id,
      title: args.title,
      completed: false,
      createdAt: Date.now(),
    });
  },
});

// Update a task
export const update = mutation({
  args: {
    taskId: v.id("tasks"),
    title: v.optional(v.string()),
    completed: v.optional(v.boolean()),
  },
  handler: async (ctx, args) => {
    const user = await getCurrentUser(ctx);
    const task = await ctx.db.get(args.taskId);

    if (!task) throw new Error("Task not found");
    if (task.userId !== user._id) throw new Error("Unauthorized");

    const updates: any = {};
    if (args.title !== undefined) updates.title = args.title;
    if (args.completed !== undefined) updates.completed = args.completed;

    await ctx.db.patch(args.taskId, updates);
  },
});

// Delete a task
export const remove = mutation({
  args: { taskId: v.id("tasks") },
  handler: async (ctx, args) => {
    const user = await getCurrentUser(ctx);
    const task = await ctx.db.get(args.taskId);

    if (!task) throw new Error("Task not found");
    if (task.userId !== user._id) throw new Error("Unauthorized");

    await ctx.db.delete(args.taskId);
  },
});

Step 6: Use in Your React App

// app/tasks/page.tsx
"use client";

import { useQuery, useMutation } from "convex/react";
import { api } from "../../convex/_generated/api";

export default function TasksPage() {
  const tasks = useQuery(api.tasks.list);
  const create = useMutation(api.tasks.create);
  const update = useMutation(api.tasks.update);
  const remove = useMutation(api.tasks.remove);

  if (!tasks) return <div>Loading...</div>;

  return (
    <div>
      <h1>Tasks</h1>

      {/* Create task */}
      <form onSubmit={(e) => {
        e.preventDefault();
        const formData = new FormData(e.target as HTMLFormElement);
        create({ title: formData.get("title") as string });
        (e.target as HTMLFormElement).reset();
      }}>
        <input name="title" placeholder="New task" required />
        <button type="submit">Add</button>
      </form>

      {/* Task list */}
      {tasks.map(task => (
        <div key={task._id}>
          <input
            type="checkbox"
            checked={task.completed}
            onChange={(e) => update({
              taskId: task._id,
              completed: e.target.checked
            })}
          />
          <span>{task.title}</span>
          <button onClick={() => remove({ taskId: task._id })}>
            Delete
          </button>
        </div>
      ))}
    </div>
  );
}

Step 7: Development vs Production

For Development (use this!):

# Start development server (NOT production!)
npx convex dev

# This runs locally and auto-reloads on changes
# Use this for all development work

For Production Deployment:

# ONLY use this when deploying to production!
npx convex deploy

# WARNING: This deploys to your production environment
# Don't use this during development

Important: Always use npx convex dev during development. Only use npx convex deploy when you're ready to ship to production.

Common Patterns

Paginated Queries

export const listPaginated = query({
  args: {
    cursor: v.optional(v.string()),
    limit: v.number(),
  },
  handler: async (ctx, args) => {
    const user = await getCurrentUser(ctx);

    const results = await ctx.db
      .query("tasks")
      .withIndex("by_user", q => q.eq("userId", user._id))
      .order("desc")
      .paginate({ cursor: args.cursor, limit: args.limit });

    return results;
  },
});

Filtering by Status

export const listByStatus = query({
  args: {
    completed: v.boolean(),
  },
  handler: async (ctx, args) => {
    const user = await getCurrentUser(ctx);

    return await ctx.db
      .query("tasks")
      .withIndex("by_user_and_completed", q =>
        q.eq("userId", user._id).eq("completed", args.completed)
      )
      .collect();
  },
});

Scheduled Jobs

// convex/crons.ts
import { cronJobs } from "convex/server";
import { internal } from "./_generated/api";

const crons = cronJobs();

crons.daily(
  "cleanup-old-tasks",
  { hourUTC: 0, minuteUTC: 0 },
  internal.tasks.cleanupOld
);

export default crons;

// convex/tasks.ts
export const cleanupOld = internalMutation({
  handler: async (ctx) => {
    const thirtyDaysAgo = Date.now() - 30 * 24 * 60 * 60 * 1000;
    const oldTasks = await ctx.db
      .query("tasks")
      .filter(q =>
        q.and(
          q.eq(q.field("completed"), true),
          q.lt(q.field("createdAt"), thirtyDaysAgo)
        )
      )
      .collect();

    for (const task of oldTasks) {
      await ctx.db.delete(task._id);
    }
  },
});

Project Templates

React + Vite + Convex

npm create vite@latest my-app -- --template react-ts
cd my-app
npm install convex @workos-inc/authkit-react
npx convex dev

Next.js + Convex

npx create-next-app@latest my-app
cd my-app
npm install convex @workos-inc/authkit-nextjs
npx convex dev

Expo (React Native) + Convex

npx create-expo-app my-app
cd my-app
npm install convex
npx convex dev

Checklist

Remember: Use npx convex dev for all development work. Only use npx convex deploy when deploying to production!

Next Steps

After quickstart:

Add more tables to schema
Implement relationships between tables
Add file storage (Convex supports file uploads)
Set up vector search for AI features
Add cron jobs for scheduled tasks
Configure production environment variables

convex-quickstart

Mais deste repositório

Mais deste repositório

Convex Quickstart

When to Use

Prerequisites Check

Quick Start Flow

Step 1: Install and Initialize

Step 2: Create Schema

Step 3: Set Up Authentication

For React/Vite Apps:

For Next.js Apps:

Environment Variables:

Step 4: Create Auth Helpers

Step 5: Create Your First CRUD Operations

Step 6: Use in Your React App

Step 7: Development vs Production

Common Patterns

Paginated Queries

Filtering by Status

Scheduled Jobs

Project Templates

React + Vite + Convex

Next.js + Convex

Expo (React Native) + Convex

Checklist

Next Steps

Troubleshooting

"Not authenticated" errors

Types not updating

Slow queries

Learn More

Convex Quickstart

When to Use

Prerequisites Check

Quick Start Flow

Step 1: Install and Initialize

Step 2: Create Schema

Step 3: Set Up Authentication

For React/Vite Apps:

For Next.js Apps:

Environment Variables:

Step 4: Create Auth Helpers

Step 5: Create Your First CRUD Operations

Step 6: Use in Your React App

Step 7: Development vs Production

Common Patterns

Paginated Queries

Filtering by Status

Scheduled Jobs

Project Templates

React + Vite + Convex

Next.js + Convex

Expo (React Native) + Convex

Checklist

Next Steps

Troubleshooting

"Not authenticated" errors

Types not updating

Slow queries

Learn More