Puter.js
Build production-ready apps with Puter.js – zero config, no API keys, user-pays model. AI Gateway, auth, storage, database. Trusted by 80K+ developers.
Editor's Verdict
Key Takeaways
- Auth
- Storage
- Database
- AI Gateway
In-Depth Review: What is Puter.js?
Puter.js is a revolutionary serverless, keyless backend SDK designed for AI-generated apps. It provides a single script tag giving you auth, cloud storage, database, and access to 500+ AI models. No API keys, no servers, no setup. The user-pays model means developers pay $0 infrastructure. It reduces AI token usage by up to 90% and mistakes by 97%. Perfect for any AI coding agent, and also great for manual development.
Core Features
Auth
Built-in authentication for user sign-in and scoped access.
Storage
Cloud storage for user files, key-value data, and more.
Database
Serverless NoSQL database ready instantly.
AI Gateway
Access to 500+ AI models from OpenAI, Claude, Gemini, and more.
Serverless Workers
Run backend logic on demand with zero infrastructure.
Keyless & Serverless
No API keys or server setup needed; works from a single script tag.
User-Pays Model
Users cover their own usage, so developers pay nothing for infrastructure.
Secure by Design
Built-in sandboxing, permissions, rate-limiting, and anti-abuse.
Small Consistent API
Easy for LLMs and developers to use correctly every time.
Pricing
Developer Plan
- Auth
- Storage
- Database
- AI Gateway (500+ models)
- Serverless Workers
- Networking
- Peer
- Image Generation
- Video Generation
- Text to Speech
- Speech to Text
- Voice Changer
- OCR API
- No API keys
- No servers
- User-Pays billing
Pros and Cons
Pros
- Zero Infrastructure CostDevelopers pay nothing regardless of user count; users pay for their own usage.
- No API KeysEliminates the risk of key leaks and simplifies setup for AI agents.
- Secure by DesignBuilt-in sandboxing, rate-limiting, and anti-abuse protect your app.
- AI-OptimizedSmall, consistent API enables AI coding agents to build apps in one shot.
- Scalable & Production-ReadyHandles millions of users out of the box with no additional configuration.
Cons
- User Account RequiredEnd users must sign up for a Puter account to use your app.
- Potential User Overage CostsHeavy users may incur charges directly from Puter if they exceed their free allowance.
- Platform DependencyYour app's backend relies on Puter's infrastructure and policies.
- Limited CustomizationLess control over backend configuration compared to self-hosted solutions.
- Early Stage EcosystemWhile growing, the platform and tooling may still be evolving.
Use Cases & Recommended Professions
Software Developer→ View Toolkit
Build full-stack apps rapidly without managing backend infrastructure.
AI Engineer→ View Toolkit
Integrate hundreds of AI models with zero setup and no API keys.
Startup Founder→ View Toolkit
Scale apps to millions of users with zero infrastructure cost.
Indie Hacker→ View Toolkit
Ship MVPs quickly using a single script tag and no server code.
Product Manager→ View Toolkit
Prototype AI-powered features without backend engineering support.
Hobbyist Developer→ View Toolkit
Learn and experiment with cloud and AI capabilities easily.
Frequently Asked Questions
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ℹ️ Curation Disclosure: The overview and features of Puter.js were synthesized using AI and fact-checked by our curation team to ensure accuracy.
