Building an agent is the easy half now. Running it as a service is the hard half.
| FastAgent | Agent as a Service. An AGENTS.md + skills/ + tools/ directory becomes a live service: Telegram, Feishu, GitHub, HTTP, or embedded in your app. Open source, built on pi. |
| duang | Group chat for people and agents — share an agent like a contact, not install it like an app. Design docs stage. |
Three SaaS run on FastAgent. They are the proof, and the source of the numbers I post.
| ClickFrom.AI | Shopify GEO — get stores recommended by ChatGPT, Perplexity, Gemini |
| AmazonSEO.ai | Amazon listing optimization |
| Catchup | Link in bio that sells, built by a Bio Agent |
Every great design is a discovery, not an invention. The optimal form was already there — hiding inside the problem. You chip away until it shows up.
The simplest form almost always wins. Not the cleverest. Not the most "powerful." Just the one that fits.
The agent types now. You still do the seeing.