Work
Astive
A creator commerce platform for Japan — sell your own templates, PDFs, video materials, and online courses, with identity verification and pre-publication review built in. Gather on social, sell on Astive.
Tools
Simple tools that make daily work a little lighter.
Browse the tools from Aster Works—simple companions that make work, learning, and daily life a little lighter, released a few at a time.
8 tools (including upcoming)
Life
Aster Support Navi
A support-program navigator that helps you find public assistance programs to check by address and life situation, then organize the next steps. Starting with childbirth and childcare support in Tokyo’s 23 wards.
Life
Aster Tools
From age, loan, and tax calculators to unit conversion and writing helpers — a free toolkit for the small chores of work and daily life. No sign-up, multilingual.
Work Coming Soon
Aster Business Navi
A business diagnostic navigator for small teams that reviews a company URL and organizes overlooked web, hiring, and trust signals into next checks.
Coming soon
Work Coming Soon
Aster Signal
A B2B sales-signal service that detects signs of restaurant openings, relocations, and closures from public sources, then organizes who to approach, when, and what to propose with evidence URLs.
Coming soon
Learning Coming Soon
Aster Compass
A career-exploration tool that helps students organize interests, strengths, and values in five minutes, then share one page to start a conversation with parents or teachers.
Coming soon
Work Coming Soon
Synaxis
A multi-tenant SaaS for churches that simply manages worship attendance and lunch sign-ups.
Coming soon
Work Coming Soon
Keryx
A Japanese-first workspace for pastors that brings sermon planning, service preparation, and reflection together in one place.
Coming soon
For Developers
Developer tools
Real, usable tools published for indie developers and Claude Code users.
Dev tool Live npm
Aster Guard
Check safety at a glance, before you connect.
A lightweight security scanner that checks MCP servers and .mcp.json before you connect them — built for Claude Code users and indie AI developers.
$ npx -y @asterworks/aster-guard scan 
- Detects 12 risk types via static analysis (prompt injection, secrets, dangerous installs, and more)
- Reports a risk score (0–100) and grade (A–F) in a Japanese or English report
- Runs fully local with no external transmission; read-only by default for safety
- Works as an MCP server callable from Claude Code, and in GitHub Actions
Dev tool Live npm
Aster Agent Audit
See your AI agents' work — safely.
A local-first dashboard that makes Claude Code and Codex work visible across safety, work-audit, and outcomes — surfacing risky commands, secret exposure, and MCP config risks, all on your machine.
$ npx -y @asterworks/agent-audit dashboard 
- Replays a session as prompt → tool call → diff → tests → commit
- Flags dangerous commands, secret exposure, and MCP config risks with evidence and a fix
- Built-in MCP config scan (AAC-* rules, A–F grade) mirroring Aster Guard
- Fully local, nothing uploaded — secrets redacted before storage, binds 127.0.0.1 only