Convex | The backend platform that keeps your app in sync

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Convex is the backend platform that keeps your app in sync. Everything you need to build your full-stack project.

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The backend platform that keeps your app in sync

Start building

npm create convex

Everything is code

From database schemas to queries, from auth to APIs, express every part of
your backend in pure TypeScript. Your backend code lives next to your app code,
is typechecked and autocompleted, and is generated by AI with exceptional accuracy.

Always in sync

Convex libraries guarantee that your app always reflects changes to your
frontend code, backend code,
and database state in real time.
No need for state managers, cache invalidation policies, or websockets.

Backend built-ins

Create cron jobs, kick off backend AI workflows, leverage built-in auth,
and tap into a growing ecosystem of components that solve common backend
needs with just an npm i.

The backend platform that keeps your app in sync

Start building

npm create convex

Everything is code

Always in sync

Backend built-ins

TypeScriptconvex/todos.tsTypeScriptconvex/schema.ts

›

⌄

›

import { mutation,query }

from"./_generated/server";

import { v } from"convex/values";

exportconstsetComplete=mutation({

args: { id: v.id("todos") },

handler: async (ctx,args) => {

awaitctx.db.patch(args.id, {

// Try checking a todo--nothing happens!

// Change this to `true` and try again.

completed: false,

});

exportconstlist=query({…});

exportconstadd=mutation({…});

exportconstsetIncomplete=mutation({…});

Reset code

Try it out!

›

⌄

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

import { v } from"convex/values";

exportdefaultdefineSchema({

todos: defineTable({

text: v.string(),

category: v.optional(v.string()),

completed: v.boolean(),

}).index("by_completed", ["completed"]),

});

Convex Chat Demo

Last categorized:2s ago

Buy groceries

Send work report to manager

Add

todos

database table with 1 document

_id	text	category	completed	_creationTime
24doqamcfaeboxnnovrhmcrkrfilwmy	"Buy groceries"	unset	false	11/30/2025, 1:32:40 PM

Reactsrc/Todo/TodoApp.tsxTypeScriptconvex/todos.ts

›

⌄

import { api } from"../../convex/_generated/api";

import { TodoList } from"./TodoList";

import { useQuery } from"convex/react";

exportfunctionTodoApp() {

// Load more by changing `count` to 10.

// Everything updates reactively.

consttodos=useQuery(api.todos.list, { count: 5 });

return <TodoListtodos={todos} />;

}

Reset code

Try it out!

›

⌄

›

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

import { v } from"convex/values";

exportconstsetComplete=mutation({…});

exportconstlist=query({

args: { count: v.number() },

handler: async (ctx,args) => {

returnawaitctx.db.query("todos").order("desc").take(args.count);

});

exportconstadd=mutation({…});

Convex Chat Demo

Last categorized:2s ago

Update project status

Work

Schedule a team meeting

Work

Do laundry

Chores

Go to the doctor

Other

Go to the gym

Other

Schedule health checkup

Add

todos

database table with 10 documents

_id	text	category	completed	_creationTime
24bzdfbchqiqwxrzcfjrtlbsvhzgvmm	"Update project status"	"Work"	false	11/30/2025, 1:32:39 PM
24kqogogiskiuzrkorbwwonzucghcdd	"Schedule a team meeting"	"Work"	false	11/30/2025, 1:32:39 PM
24pkidrltcwkbmcfhlmsitkatovobui	"Do laundry"	"Chores"	false	11/30/2025, 1:32:39 PM
24vrdzjzyqvnnqdiwrqskyulyukorcw	"Go to the doctor"	"Other"	false	11/30/2025, 1:32:39 PM
24yvcsoajvcsignwyrdtnasyphlqgcv	"Go to the gym"	"Other"	false	11/30/2025, 1:32:39 PM
24mxmwvkipedfxjsgwnkphhhvquldww	"Clean my room"	"Chores"	false	11/30/2025, 1:32:39 PM
24zxxxihtwsyhxxuukhbrfjjkbmmqex	"Play tennis with Steve"	"Other"	false	11/30/2025, 1:32:39 PM
24zwoqccgjewwazvweynibewzqynxnk	"Play basketball"	"Other"	false	11/30/2025, 1:32:39 PM
24zwitqwehzgirbaaotsevubecjcihv	"Talk to my boss"	"Work"	false	11/30/2025, 1:32:39 PM
24vjrnwccwupjeluuilwsinuexhzsha	"Buy groceries"	"Chores"	false	11/30/2025, 1:32:39 PM

TypeScriptconvex/crons.tsTypeScriptconvex/categorize.tsTypeScriptconvex/schema.ts

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⌄

import { cronJobs } from"convex/server";

import { internal } from"./_generated/api";

constcrons=cronJobs();

crons.interval(

"categorize todos",

{ seconds: 5 },

internal.categorize.categorize,

{

// Add categories "Sports" and "Health"

// to see the todos categorized on the

// next cron job run.

categories: ["Chores","Work"],

);

exportdefaultcrons;

Reset code

Try it out!

›

⌄

import { v } from"convex/values";

import { api,internal } from"./_generated/api";

import { Doc,Id } from"./_generated/dataModel";

import { internalAction,internalMutation } from"./_generated/server";

importAnthropicfrom"@anthropic-ai/sdk";

typeAiCategorizeResponse= {

id: Id<"todos">;

category: string;

};

exportconstcategorize=internalAction({

args: { categories: v.array(v.string()) },

handler: async (ctx,args) => {

consttodos=awaitctx.runQuery(api.todos.list, { count: 100 });

constresponse=awaitcategorizeTodos(todos,args.categories);

awaitctx.runMutation(internal.categorize.setCategories, {

categories: response,

});

exportconstsetCategories=internalMutation({

›

⌄

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

import { v } from"convex/values";

exportdefaultdefineSchema({

todos: defineTable({

text: v.string(),

category: v.optional(v.string()),

completed: v.boolean(),

}).index("by_completed", ["completed"]),

});

Convex Chat Demo

Last categorized:2s ago

Update project status

Work

Schedule a team meeting

Work

Do laundry

Chores

Go to the doctor

Other

Go to the gym

Other

Clean my room

Chores

Play tennis with Steve

Other

Play basketball

Other

Talk to my boss

Work

Buy groceries

Chores

Complete project deadline

Add

todos

database table with 10 documents

_id	text	category	completed	_creationTime
24vtkrknppsugobbuuccjupjiqssypf	"Update project status"	"Work"	false	11/30/2025, 1:32:39 PM
24ytzukahjuldiwlihznueckhskkywl	"Schedule a team meeting"	"Work"	false	11/30/2025, 1:32:39 PM
24fkpvrwcmbivcbabjmlrvucqbtipke	"Do laundry"	"Chores"	false	11/30/2025, 1:32:39 PM
24huakrddhtbcwywgoohhraycyahfbn	"Go to the doctor"	"Other"	false	11/30/2025, 1:32:39 PM
24pgohwdvmjzgkwyhlwpevkgsrgqyuy	"Go to the gym"	"Other"	false	11/30/2025, 1:32:39 PM
24yaymyecnjkotabrhiyorgtkclnach	"Clean my room"	"Chores"	false	11/30/2025, 1:32:39 PM
24gknlaudbigffihkngmknydjaptchd	"Play tennis with Steve"	"Other"	false	11/30/2025, 1:32:39 PM
24zuotxggtqetzedcbvwmdijqpflflm	"Play basketball"	"Other"	false	11/30/2025, 1:32:39 PM
24giadwdnsuucjdraxyakvgdzbmrbmu	"Talk to my boss"	"Work"	false	11/30/2025, 1:32:39 PM
24oreismjnehexpnytftpwgtuitcyvc	"Buy groceries"	"Chores"	false	11/30/2025, 1:32:39 PM

AI Tools

LLMs love Convex

With Convex, everything is just TypeScript. This means your favorite AI tools are pre-equipped to generate high quality code.

Learn more

Try Convex with\

Product

Not just a database

Everything your product deserves to build, launch, and scale.

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Customer Love

Loved by developers

What people building their business on Convex are saying.

Next + Convex (all in typescript)

Angular (typescript) + Django (python) + Postgres + S3 + Websocket DIY + SQS + IaC + DIY e2e type safety

🤔

WebDevCody @webdevcody

@convex Simple. Fast. Realtime.

AndyOz @andy_austin_dev

I think @convex might be the best DB I've ever used

Robin @robinxpfp

Happy to see more first-class clerk x convex integration

There's such a major architecture shift around Serverless + Edge + React + Typescript that (imo) it's unlikely sql is still the right abstraction

Very compelling that convex is approaching this from first principles

Colin | Clerk.com @tweetsbycolin

😱 @convex is the gift that keeps on giving

Check it out in combination with @nextjs docs.convex.dev

Guillermo Rauch @rauchg

@convex is everything I wanted Firebase to be. Such a great tool. Feels illegal to know about this before others.

Timothy Stepro @tim_stepro

#dailytip if you are a #react developer and want an alternative to Firebase, you might want to give @convex a try. It has amazing ReactHooks with samples in #Javascript and #typescript and the price isn't bad. I'm not a Firebase expert but it looks like all features are there

urubatan @urubatan

@convex feels like what I wanted Firebase and MongoDB Realm to be and more. Really enjoying the DX so far!

David Kim @dvddkkim

I used @convex once to make sure our integration at @ClerkDev worked and the docs matched what we expected.

It's magical. I don't say that lightly. I think it's time to do a video on the channel.

James Perkins @james_r_perkins

I'm working on a new app build with @convex and I am *very* excited about the tech here

- DB schema defined in TS - end-to-end types (like if tRPC also set up your DB) - real-time updates Just Work™

Jason Lengstorf @jlengstorf

Managing an application's state has become easier, but the global state concept is still a pain for developers, which @convex aims to solve. I made a realtime application using @convex, @nextjs, and @auth0 and loved it.😍

Anshuman Bhardwaj @sun_anshuman

Interesting tool of the week: convex.dev by @convex

We like: Makes it easy to build a live-updating web app with a document database. Strictly-typed fully relational schemas defined in code (optional, but recommended)

Console - Devtools, devtools, devtools @consoledotdev

urubatan @urubatan

I used @convex once to make sure our integration at @ClerkDev worked and the docs matched what we expected.

It's magical. I don't say that lightly. I think it's time to do a video on the channel.

James Perkins @james_r_perkins

@convex is everything I wanted Firebase to be. Such a great tool. Feels illegal to know about this before others.

Timothy Stepro @tim_stepro

I think @convex might be the best DB I've ever used

Robin @robinxpfp

urubatan @urubatan

I used @convex once to make sure our integration at @ClerkDev worked and the docs matched what we expected.

It's magical. I don't say that lightly. I think it's time to do a video on the channel.

James Perkins @james_r_perkins

@convex is everything I wanted Firebase to be. Such a great tool. Feels illegal to know about this before others.

Timothy Stepro @tim_stepro

I think @convex might be the best DB I've ever used

Robin @robinxpfp

Happy to see more first-class clerk x convex integration

There's such a major architecture shift around Serverless + Edge + React + Typescript that (imo) it's unlikely sql is still the right abstraction

Very compelling that convex is approaching this from first principles

Colin | Clerk.com @tweetsbycolin

I'm working on a new app build with @convex and I am *very* excited about the tech here

- DB schema defined in TS - end-to-end types (like if tRPC also set up your DB) - real-time updates Just Work™

Jason Lengstorf @jlengstorf

@convex feels like what I wanted Firebase and MongoDB Realm to be and more. Really enjoying the DX so far!

David Kim @dvddkkim

😱 @convex is the gift that keeps on giving

Check it out in combination with @nextjs docs.convex.dev

Guillermo Rauch @rauchg

Happy to see more first-class clerk x convex integration

There's such a major architecture shift around Serverless + Edge + React + Typescript that (imo) it's unlikely sql is still the right abstraction

Very compelling that convex is approaching this from first principles

Colin | Clerk.com @tweetsbycolin

I'm working on a new app build with @convex and I am *very* excited about the tech here

- DB schema defined in TS - end-to-end types (like if tRPC also set up your DB) - real-time updates Just Work™

Jason Lengstorf @jlengstorf

@convex feels like what I wanted Firebase and MongoDB Realm to be and more. Really enjoying the DX so far!

David Kim @dvddkkim

😱 @convex is the gift that keeps on giving

Check it out in combination with @nextjs docs.convex.dev

Guillermo Rauch @rauchg

Anshuman Bhardwaj @sun_anshuman

Interesting tool of the week: convex.dev by @convex

We like: Makes it easy to build a live-updating web app with a document database. Strictly-typed fully relational schemas defined in code (optional, but recommended)

Console - Devtools, devtools, devtools @consoledotdev

Next + Convex (all in typescript)

Angular (typescript) + Django (python) + Postgres + S3 + Websocket DIY + SQS + IaC + DIY e2e type safety

🤔

WebDevCody @webdevcody

@convex Simple. Fast. Realtime.

AndyOz @andy_austin_dev

Anshuman Bhardwaj @sun_anshuman

Interesting tool of the week: convex.dev by @convex

We like: Makes it easy to build a live-updating web app with a document database. Strictly-typed fully relational schemas defined in code (optional, but recommended)

Console - Devtools, devtools, devtools @consoledotdev

Next + Convex (all in typescript)

Angular (typescript) + Django (python) + Postgres + S3 + Websocket DIY + SQS + IaC + DIY e2e type safety

🤔

WebDevCody @webdevcody

@convex Simple. Fast. Realtime.

AndyOz @andy_austin_dev

Integrations