saas-starter

better-auth: Seamless, Scalable Auth for SaaS Founders

Name: better-auth: Seamless, Scalable Auth for SaaS Founders
Author: better-auth

Deploy a battle‑tested TypeScript auth suite—OAuth, OIDC, SSO, Stripe billing—in minutes. Ideal for founders building secure SaaS products. 30k+ GitHub stars.

30,284 stars+102★ this week2,969 forksTypeScriptGuide quality 9/10 · reviewed Oct 9Install verified Sep 21Updated 10/13/2026100% free · open source

What it does

Better-auth provides a comprehensive authentication system for SaaS applications, handling user registration, login, and authorization in a secure and scalable manner.

When to use it

•When building a SaaS application that requires secure user authentication and authorization
•When needing to integrate multiple authentication providers, such as Google, Facebook, or GitHub
•When requiring a customizable and extensible authentication system to fit specific business needs

Ready-to-paste prompt

To authenticate a user with Google, use the following code: `betterAuth.authenticate('google').then((result) => console.log(result))`

Heads up: Make sure to handle errors properly when using the `betterAuth.authenticate()` and `betterAuth.authorize()` methods, as they can throw exceptions if the authentication or authorization process fails, for example: `betterAuth.authenticate('google').catch((error) => console.error(error))`

Saves to your device

Use with Claude

New

Skip the builder — one click puts this in Claude, Cursor, Antigravity and more.

✅ Light setup✓ Install verified 9/21/2026

Installs with a command or two; your AI agent can do it for you.

Try it instantly — no install

Claude Code

mkdir -p ~/.claude/skills/better-auth && curl -fsSL https://workflowstacks.com/api/skills/better-auth/claude-skill -o ~/.claude/skills/better-auth/SKILL.md

Open in another AI app

Opens the app with this repo with the prompt ready to go — no copy-paste needed.

Connect the whole catalog (MCP)

claude mcp add --transport http workflowstacks https://workflowstacks.com/api/mcp

Adds a WorkflowStacks connector to Claude Code: search and load any skill here by chatting.

How better-auth: Seamless, Scalable Auth for SaaS Founders works

Codeflow

Free to inspect

Better-auth: Seamless, Scalable Auth for SaaS Founders is a very large TypeScript project (~301k lines across 1397 code files, plus 168 test files). Setup is light: installs like a normal app. Reading the code is optional. Last commit this month, MIT license, has a test suite.

Size

Very large codebase

~301k lines · 1397 code files · days to read — use, don't read

Setup

One-command install

Installs like a normal app. Reading the code is optional.

Runs on

Node.js · Docker

No API keys detected

TypeScript 100%

Where to start reading

1
README.md
Start here — what it does and how to install it
2
AGENTS.md
The instructions the AI actually follows
3
package.json
Dependencies and the commands it exposes
4
demo/electron/.gitignore
A worked example — copy this to get going

What's in each folder

packages/Sub-packages / plugins1160 files

docs/Documentation435 files

demo/Examples you can copy320 files

patches/Patches1 files

e2e/Tests — proof it works177 files

.github/CI / automation (GitHub Actions)30 files

.changeset/Tool / agent settings17 files

test/Tests — proof it works12 files

READMEHas testsDocumentedCI checksDocker readyExamples includedMIT licenseUpdated this month

Use with Claude

New

Skip the builder — one click puts this in Claude, Cursor, Antigravity and more.

✅ Light setup✓ Install verified 9/21/2026

Installs with a command or two; your AI agent can do it for you.

Try it instantly — no install

Claude Code

mkdir -p ~/.claude/skills/better-auth && curl -fsSL https://workflowstacks.com/api/skills/better-auth/claude-skill -o ~/.claude/skills/better-auth/SKILL.md

Open in another AI app

Opens the app with this repo with the prompt ready to go — no copy-paste needed.

Connect the whole catalog (MCP)

claude mcp add --transport http workflowstacks https://workflowstacks.com/api/mcp

Adds a WorkflowStacks connector to Claude Code: search and load any skill here by chatting.

Quick Actions

Details

Creator

better-auth

Language

TypeScript