● Released
ProxyLoom
MCP proxy for multi-account workflows
Puts several clients and several SaaS accounts behind a single MCP connection. Keeping none of the relayed data is a premise of the design, not an afterthought.
proxyloom.dev →Services
What we run
Built and operated in-house
Coming soon
B2B SaaS for employee experience
Employee experience, powered by AI agents
Uses AI agents to automate everyday routine work from a plain-language instruction, so that the people doing that work have a better day.
Principles
How we operate
What we hold to
Team
No split by job function
We draw no line between an engineering side and a business side. Everyone here decides what to build and carries it through to the implementation themselves. Nothing has to be relayed between the idea and the code.
Scale
A small, senior team
Headcount is not a goal in itself. Each person covers a wide area, which keeps the distance between deciding and building short.
Independence
We decide by our own standards
We are a small company with no outside investment. No one else’s deadlines or interests bend our judgment — the only question is whether we think the thing is good. Free to think, free to build.
Quality
We answer with quality
We are not a company that can win on scale. That is exactly why we think the only way through is that the product is good once you actually use it.
Founder
Who runs it
Background
Twenty years at one of Japan’s largest tech companies. Joined DeNA in its early days and, as head of a company-wide technology division, led an organization of up to 50 people and an annual budget of ¥2 billion as the business grew a hundredfold, from ¥2 billion to ¥200 billion.
Later launched a new B2B SaaS business inside that company as its product owner. The business was spun out, took on outside capital, and is still running today.
At a global Big Tech company, AWS, worked as a senior cloud application architect in its professional services division, supporting enterprise cloud application design and new business launches from the technical side.
Since 2018, has also built and operated self-funded SaaS products on the side, including one for overseas markets.
Company
Company information
Registered details
- Legal name
- caret0 LLC / 合同会社caret0
- Address
- Shibuya Dogenzaka Tokyu Building 2F-C
1-10-8 Dogenzaka, Shibuya-ku, Tokyo 150-0043, Japan - Representative
- Atsushi Ono
- Founded
- September 2023
- Business
- Planning, development and operation of web services
- Origin of the name
- caret0 is ^0 — the regular expression for “starts from zero”. It stands for thinking from zero, rather than being bound by concepts that already exist.
Contact
Questions about our services, bug reports, business or press inquiries — please use this form. We read everything, and normally reply within two business days.