local-first

Guide local-first architecture decisions for offline-first web applications.

14|5|Updated Jan 29, 2026

Search Tags:#architecture #web development #sync #conflict resolution #data synchronization #offline-first #local-first

Ready to run

npx skills add https://github.com/oakoss/agent-skills --skill local-first-oakoss

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: local-first
Source: https://github.com/oakoss/agent-skills/tree/main/skills/local-first
Command: npx skills add https://github.com/oakoss/agent-skills --skill local-first-oakoss

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill provides a comprehensive framework for designing and implementing local-first architectures, enabling applications to function seamlessly offline and sync data intelligently across devices.

Core Features & Use Cases

Architecture Decision Framework: Guides choices between server-based, local-first, and hybrid models.
Sync Engine Selection: Compares and contrasts leading sync solutions like ElectricSQL, Replicache, and PowerSync.
Conflict Resolution Strategies: Details methods from Last-Write-Wins to CRDTs.
Use Case: You're building a collaborative document editor that needs to work reliably even with intermittent network connectivity. This Skill helps you choose the right sync engine, client storage, and conflict resolution strategy to ensure a smooth user experience.

Quick Start

Use the local-first skill to explore sync engine options for offline-first web applications.

Frequently Asked Questions about local-first

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I build an offline-first web app that syncs data reliably?▼

To build an offline-first web app, adopt a local-first architecture using a sync engine like ElectricSQL or Replicache, client-side storage like SQLite WASM or IndexedDB, and a conflict resolution strategy to ensure reliable data synchronization across devices.

What is the best way to choose between local-first and server-based architecture?▼

Choosing between local-first and server-based architecture depends on your connectivity requirements; a local-first architecture decision framework helps evaluate offline functionality needs against server-based models to determine the right hybrid or fully offline-first approach.

How does data synchronization work with client-side storage in offline-first apps?▼

Data synchronization in offline-first apps works by storing data locally using IndexedDB or OPFS, then using sync engines like PowerSync or LiveStore to reconcile changes with the server when network connectivity is restored.

What conflict resolution strategy should I use for local-first data synchronization?▼

Conflict resolution strategies for local-first data synchronization range from Last-Write-Wins (LWW) and server-wins for simpler cases, to CRDTs and field-level merge for collaborative applications requiring fine-grained conflict handling.

Can I use SQLite WASM and PGlite for offline-first web application storage?▼

Yes, you can use SQLite WASM and PGlite for offline-first web application storage; these client-side storage solutions provide local persistence and query capabilities, working alongside sync engines to manage offline data.

When should I avoid using a local-first architecture for my web application?▼

You should avoid local-first architecture if your application relies on immediate server-side data consistency, requires centralized conflict resolution, or lacks the complexity budget for managing sync engines and client-side storage boundaries.