The AI-native backend for fast-moving teams. Agents that create content, build features, and ship code, without leaving the chat. Get started free.

San Francisco, CA
On June 12, a US government directive suspended worldwide access to Claude Fable 5 with five hours' notice. Agents built on it were at risk overnight. On Cosmic, they kept running. We rerouted every Fable 5 agent to Opus 4.8 automatically. cosmicjs.com/blog/fable-5-my…
61
An AI agent recently ran up a verified $6,531 AWS bill scanning a hobbyist network. The model was not the problem. The architecture was. Here are the four guardrails that keep an agent in its lane: cosmicjs.com/blog/ai-agent-c…
1
2
51
Cosmic retweeted
I love this dashboard demo, I wish more companies had this on their website. This one takes you on a full circle journey of your content from management, to deployment, to editing, to analytics, to agent collaboration.
1
3
6
231
Cosmic Rundown: A site doubled users by going HTML-first. Apple ships native macOS containers. npm v12 announces breaking changes. Plus a German court holds Google liable for AI Overview errors. Read the rundown 👇 cosmicjs.com/blog/cosmic-run…
1
1
34
Cosmic now has a new rich-text metafield: a modern editor backed by portable Markdown. It ships with reusable Content Blocks and inline Object embeds, so editors get a clean writing experience and developers keep full rendering control. Read more: cosmicjs.com/blog/rich-text-…
1
1
91
Cosmic Rundown: Anthropic releases Claude Fable 5 and Mythos 5. OpenCV 5 ships major computer vision improvements. Microsoft AI tools compromised. Plus the growing conversation about cleaning up AI-generated code. Read the rundown 👇 cosmicjs.com/blog/cosmic-run…
66
What is an MCP server? It is the layer that lets AI models read and write your content directly. Cosmic now ships a native MCP server, so agents can work with your content models through a standard protocol. Here is the complete guide 👇
Made with AI
1
1
1
92
AI assistants are now generating more new databases than human developers. This changes who your software is built for. Machines are becoming the primary users of your tools, your APIs, and your content. We broke down what it means for how you build cosmicjs.com/blog/ai-launche…
1
1
35
The interesting shift in AI tooling this year is not the models. It is what the models are allowed to touch. When an agent can provision a database, scaffold the schema, and verify access in one API call, the bottleneck moves from setup to intent. We wrote about what that means
20