Cosmic YC Application

Winter 2019Active

Cosmic went through Y Combinator in the Winter 2019 batch as a B2B company. Below: what the company does, who founded it, and its application to YC, reconstructed question by question in the real YC form.

YC batch: Winter 2019
Industry: B2BEngineering, Product and Design
Team size: 5
Status: Active
Launched: 2018

Founders

Tony SpiroFounder/CEO

What Cosmic does

Cosmic is an AI-powered headless CMS built for teams that move fast. We combine flexible content infrastructure with AI Agents that live in Slack, write content, build features, fix bugs, and deploy apps autonomously. Developers get a REST API with sub-100ms response times, a TypeScript SDK, CLI, and MCP Server that plugs directly into Cursor, Claude Code, and GitHub Copilot. Content teams get an intuitive dashboard with 20+ metafield types, AI image and video generation, and no migrations ever. Teams use Cosmic because it eliminates the need to build and maintain CMS infrastructure while giving them AI capabilities most platforms haven't shipped yet. Used by teams in 150+ countries, 50M+ API requests per month, 99.9% uptime SLA. Forever free plan. No credit card required.

Cosmic's YC application, reconstructed

Y Combinator application

Cosmic, Winter 2019 batch. The real form questions, answered from public data.

Founders2
Company7
Progress7
Idea4
Equity3
Curious2
Batch Preference1

Company

Company name

Cosmic

Describe what your company does in 50 characters or less.

AI-powered headless CMS

What is your company going to make? Please describe your product and what it does or will do.

We build an AI-powered headless CMS that gives developers a REST API with fast response times and a TypeScript SDK. Content teams get a dashboard with extensive metafield types and AI tools like image and video generation. AI Agents live in Slack to write content, fix bugs, build features, and deploy apps autonomously.

Where do you live now, and where would the company be based after YC?

We live in San Francisco and have a mostly remote team. After YC, the company will remain headquartered in San Francisco with distributed contributors.

Explain your decision regarding location.

San Francisco has the best access to engineering talent and AI innovation. Our remote team allows flexibility, but SF remains our base to connect with tech hubs and investors.

21 more answers in the full application

Founders, Progress, Idea, Equity, Curious, Batch Preference are in the full version. Create a free account to open it in YC Insights, next to every other YC batch.

See full application

Frequently Asked Questions

Is this the real Cosmic YC application?

No. Y Combinator keeps submitted applications private. This is a reconstruction: the real YC form questions, answered from Cosmic's public data (launch notes, founder backgrounds, product description). It shows how a company like Cosmic would present itself to YC, not the text they submitted.