We make
useful (or not)
things from
curious ideas.

An independent development studio for data tools, research systems, and new ways of building software.

Projects

fairy.sumimi.jp

Data tools that turn scattered inputs into usable views.


                  01SELECT task, hours
                  02FROM analyst_week
                  03WHERE verified = TRUE;

QUERY / VERIFY / DECIDE

filtercapital.sumimi.jp

A hiring-decision Skill for people accountable for the work and hiring outcome. It helps them set the role standard and screen resume claims against evidence.

research.sumimi.jp

Notes, experiments, and evidence from how we build.

maga.sumimi.jp

A product-lead workflow for building software with Codex.

We make
useful (or not)
things from
curious ideas.

Projects

Unannounced

Unannounced

We make useful (or not) WE MAKE IT ANYWAY. things from curious ideas.

Sumimi Fairy

Sumimi Research

Sumimi MAGA

We make
useful (or not)
things from
curious ideas.