Lucia

Deprecated lib, now auth guide

FreeAuth & user managementlucia-auth.com

What it is

No longer a library. Lucia was deprecated in March 2025 and now exists as a learning resource: a copy-paste auth_session.ts reference implementation plus The Auth Book, a free guide covering sessions, tokens and password handling. The site was last refreshed in July 2026.

Why it earns a slot

Read it before choosing any vendor — it is the fastest way to genuinely understand what session auth does, and the single-file implementation is enough for small projects.

Know before you commit

Do not install the npm package for new work; it is unmaintained and will not receive security fixes. This is documentation and example code, not a supported dependency.

Field notes

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Pricing snapshot

Free · deprecated library, now MIT reference code and a written guide

Snapshots move fast — verify at checkout, and post a field note if it changed.

Drop into your Lovable chat

Evaluate Lucia (https://lucia-auth.com) for this project, then use it only if it fits what we are already building.
Context: Deprecated lib, now auth guide. No longer a library. Lucia was deprecated in March 2025 and now exists as a learning resource: a copy-paste auth_session.ts reference implementation plus The Auth Book, a free guide covering sessions, tokens and password handling. The site was last refreshed in July 2026.
Reviewer notes (general, not written for this codebase): Read it before choosing any vendor — it is the fastest way to genuinely understand what session auth does, and the single-file implementation is enough for small projects.
Watch out for: Do not install the npm package for new work; it is unmaintained and will not receive security fixes. This is documentation and example code, not a supported dependency.
Pricing: Free · deprecated library, now MIT reference code and a written guide
Rules: treat the notes above as background only. Do not assume a theme, style, layout or feature that is not already in this project — inspect the existing code first and ask me before changing visual direction.

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Neighbourhood

How Lucia sits against the rest of the atlas — swaps, companions and the tools builders actually save alongside it.