Cosmic
Headless CMS for any website or app
Overview
Cosmic is a fully managed, cloud-hosted headless CMS that provides both REST and GraphQL APIs to deliver content to any website or application. It features an intuitive dashboard for content creators, AI-powered content and code generation via built-in agents and workflows, media management with Imgix image optimization, localization across 400+ locales, revision history, webhooks, and role-based access control. Cosmic offers official JavaScript and Swift SDKs, a CLI tool, and framework guides for Next.js, React, Astro, Nuxt, Vue, Svelte, and Gatsby. It is designed for development teams that need a scalable, serverless content backend with a global CDN and enterprise-grade security.
Proprietary
Best for:
Features
Pricing
Compatible Technologies
Technical Features
Community
10k/week
NPM Downloads
Enterprise Features
Multi-tenant Support
Manage multiple sites or projects from a single instance
Scalability
Horizontal scaling and high-availability deployments
Dedicated Support
Priority support with SLA guarantees for enterprise plans
Security & Compliance
Find Cosmic Experts
Looking for professional help with your Cosmic project? Here are top certified agencies and developers.
Top Agencies
Alpina Tech
#1 RecommendedCraft custom, responsive websites using expert code and stunning design. Build your site with a flexible CMS and premium hosting to boost your digital presence.
Tentwenty Digital Agency
Tentwenty Digital Agency specializes in addressing complex client challenges through a combination of cutting-edge UI/UX design and seamless technical integration.
10x Media
10x Media is a boutique web development agency located in Bavaria (Germany) with additional hubs in Sofia (Bulgaria) and Santiago (Chile). We’re a core team of 8 people, and we don’t just code: we combine strategy, design, development, and project management, covering everything needed to bring high-impact digital solutions to life.
QBurst
QBurst is a digital engineering company that crafts delightful client experiences through AI-driven software engineering and data solutions.
FocusReactive
#1 RecommendedWeb development agency with deep expertise in the headless CMS market.
Cosmic is a cloud-hosted headless CMS that organizes content into Buckets,
Object Types, and Objects. Teams define schemas using Metafields — text,
media, relationships, repeaters, and more — then deliver content through
both REST and GraphQL APIs. Built-in imgix integration handles image
processing and CDN delivery out of the box.
Key Highlights
- REST and GraphQL APIs with NoSQL-style advanced queries
- Object relationships with single and multiple linking
- Imgix-powered image processing and CDN delivery
Why It Fits Jamstack Workflows
- Both REST and GraphQL endpoints serve content from any Bucket, with response filtering via a props parameter so frontends fetch only the fields they need
- Webhooks fire on Object create, edit, delete, and publish events, enabling static site rebuilds and third-party integrations without custom middleware
Typical Implementations
- Blogs and content-driven marketing sites
- Portfolio and agency websites
- E-commerce storefronts with product catalogs
- Multi-locale apps with localized content
Setup Snapshot
Hosting: "Cloud-hosted SaaS with optional Cosmic Pages for deployments"
Content: "Object Types define schemas; Metafields model each field"
Delivery: "REST API, GraphQL API, webhooks, imgix CDN for media"
Notes
- Terminology is developer-oriented — Buckets, Objects, Metafields — and may require onboarding for non-technical editors
- Webhooks, localization, and revision history are add-on features available during a 14-day trial on free Buckets