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# authentication

User authentication mechanisms

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I've built auth six times. Here's the system I would build today

I've built auth six times. Here's the system I would build today

4
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5 min read
How to build a login flow in Next.js 15 (sessions, cookies, CSRF, and the timing attack nobody talks about)

How to build a login flow in Next.js 15 (sessions, cookies, CSRF, and the timing attack nobody talks about)

2
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10 min read
Cryptographic Agent Identity: A Technical Solution to Bot Detection

Cryptographic Agent Identity: A Technical Solution to Bot Detection

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6 min read
Dropping Email Required — Migrating to Phone OR Email Authentication

Dropping Email Required — Migrating to Phone OR Email Authentication

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2 min read
JWT Token Explained: How to Decode, Debug, and Secure Your Tokens

JWT Token Explained: How to Decode, Debug, and Secure Your Tokens

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1 min read
I Built a Self-Hosted Auth System Like Clerk — Here's What I Learned

I Built a Self-Hosted Auth System Like Clerk — Here's What I Learned

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3 min read
Designing Secure Authentication with Access & Refresh Tokens

Designing Secure Authentication with Access & Refresh Tokens

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2 min read
Addressing Security Risks: Replacing Unscoped API Keys with Fine-Grained Access Control in AI Agent Frameworks

Addressing Security Risks: Replacing Unscoped API Keys with Fine-Grained Access Control in AI Agent Frameworks

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11 min read
Things I Learned While Building Custom Keycloak Themes

Things I Learned While Building Custom Keycloak Themes

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3 min read
How MCP Servers Handle Authentication (And Where They Get It Wrong)

How MCP Servers Handle Authentication (And Where They Get It Wrong)

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4 min read
NextAuth.js v5 + Prisma + PostgreSQL: Production Setup Guide

NextAuth.js v5 + Prisma + PostgreSQL: Production Setup Guide

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4 min read
Building Authentication From Scratch in Go — No Libraries, No Magic

Building Authentication From Scratch in Go — No Libraries, No Magic

1
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4 min read
Designing Authentication Systems Across Multiple Identity Providers: Lessons from Real Failures

Designing Authentication Systems Across Multiple Identity Providers: Lessons from Real Failures

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2 min read
Implementing FedCM Login in the oauth2-passkey Rust Library

Implementing FedCM Login in the oauth2-passkey Rust Library

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7 min read
Escaping the "Blind Phase": How to Debug OpenShift 4 LDAP & Active Directory Logins

Escaping the "Blind Phase": How to Debug OpenShift 4 LDAP & Active Directory Logins

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4 min read
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