power the future of AI

Start Building for
Humans
LLMs.

Turn your API into an MCP Server
AI integration made simple
all in one URL

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Fast Setup

Your API to ChatGPT & Claude in minutes. No servers, no infra to manage.

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Share & Grow

Publish your tools for others to use. Reach new users and boost your presence.

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Chrome Extension

Watch your LLM use any app in your browser. Reading, clicking, and typing like a real user.

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Why Cosmonauth

We make sure you're ready for the AI-first era

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Connect with the next wave of "users"

AIs are calling APIs directly. Cosmonauth makes sure they can find and use yours instantly.

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Stay relevant as the market shifts

AI usage is exploding. We make sure your service stays visible and competitive.

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Build or consume - both win

Publish tools for others, or use Cosmonauth to power your LLM with unique capabilities.

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No need to rebuild for AI standards

We handle identity, auth, and evolving AI security so you can focus on your service.