Integrating Better Auth with Astro framework
The guide outlines how to mount the Better Auth handler, create a client, and use middleware to protect routes within an Astro application.
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Better Auth
https://better-auth.com/docsBetter Auth Documentation for AI Search & MCP
Better Auth documentation provides guides for implementing authentication features like 2FA and OAuth, alongside integrating with frameworks and managing the Better Auth infrastructure. It also includes resources for AI integration and agentic workflows.
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- ~468.2K
- Updated
- Sep 30, 2026
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- Claude
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Use Better Auth Documentation to complete source-specific tasks, make informed decisions, and follow evidence-backed workflows.
Configuring Apple OAuth provider for user authentication
The documentation provides step-by-step instructions to obtain OAuth credentials from the Apple Developer Portal and configure the provider within Better Auth.
Implementing Two-Factor Authentication (2FA)
The documentation provides detailed steps for installing the 2FA plugin, configuring OTP/TOTP, and managing features like backup codes and trusted devices.
Diagnosing "account_already_linked_to_different_user" error
The reference explains the cause of this OAuth flow error and provides typical resolutions, including unlinking accounts or merging user profiles.
Building a custom database adapter for Better Auth
The guide provides instructions and best practices for developing a custom database adapter to extend Better Auth's compatibility with various data stores.
Upgrading Better Auth to version 1.7
The guide details the necessary steps and considerations for upgrading Better Auth from 1.6 to 1.7, covering changes across various components like OAuth, SAML, and 2FA.
Coverage
What's Indexed from Better Auth
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Docs — Plugins
/docs/content/docs/plugins
45 pages
Implements various authentication and user management features, such as two-factor authentication, administrative controls, and API key management, to enhance application security and functionality.
Authentication
/docs/content/docs/authentication
38 pages
Guides users through setting up and integrating various OAuth and traditional authentication providers, such as Apple, Atlassian, and email/password, into their applications.
Reference
/docs/content/docs/reference
27 pages
Offers reference material, including guides for contributing to Better Auth, frequently asked questions, security information, and detailed explanations for various authentication errors.
Errors
/docs/content/docs/reference/errors
20 pages
Details common authentication errors, such as account linking issues or invalid credentials, providing explanations of their causes and practical steps for resolution.
Integrations
/docs/content/docs/integrations
19 pages
Provides guides for integrating Better Auth with various web frameworks and platforms, including Astro, Convex, Electron, and Express, to enable authentication in diverse application environments.
Concepts
/docs/content/docs/concepts
13 pages
Explains fundamental concepts of Better Auth, such as API interactions, CLI usage, client-side operations, database integration, and OAuth mechanisms, to provide a foundational understanding of the system.
Guides
/docs/content/docs/guides
12 pages
Offers practical guides for various tasks, including upgrading Better Auth versions, migrating from other authentication solutions, creating custom database adapters, and optimizing performance.
Adapters
/docs/content/docs/adapters
9 pages
Infrastructure
/docs/content/docs/infrastructure
7 pages
Introduces Better Auth Infrastructure as a paid service, detailing its key features like the management dashboard, audit logging, and security plugins, to extend and manage authentication systems.
Examples
/docs/content/docs/examples
5 pages
Provides practical code examples for integrating Better Auth with popular frontend frameworks like Astro, Next.js, and SvelteKit, demonstrating various authentication features.
AI Resources
/docs/content/docs/ai-resources
3 pages
Offers resources designed to integrate Better Auth into AI-driven workflows, including tools like AI Chat, LLMs.txt for machine-friendly indexing, MCP server, and portable instruction files for agents.
Infrastructure — Plugins
/docs/content/docs/infrastructure/plugins
3 pages
Details infrastructure-specific plugins like Audit Logs, Dashboard, and Security Plugin (Sentinel), which enhance monitoring, management, and protection of authentication events.
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