Kaisha
MCP server for Kaisha — Japan Company Registry API. Resolve Japanese companies, verify invoice (適格請求書) registration numbers, and compute Japanese business days. Pays per call via x402 (USDC on Base or Solana) — no API keys.
Works with: Claude Code, Cursor, Claude Desktop, Codex CLI, Gemini CLI, Cline, Windsurf, VS Code (installable)
installable: each client documents how to load an MCP server of this type — that is the client's promise, not a claim verified against this capability
Category: Other — see all ranked ›
Install (Claude Code):
claude mcp add kaisha -- npx -y kaisha-mcp- tashan score: 44.0
- Adoption: 19/wk
- Upkeep: 57.0
- Freshness: 95.0
- Evidence coverage: 100% of the inputs this score can use
- Health: active
Security audit
Not scanned yet. We audit npm-published capabilities for known advisories, install-time scripts and permission surface; this one has no npm package we can resolve, or has not reached the queue.
npm ↗ · source ↗ · pkg:kaisha-mcp
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Measured 2026-08-03 · scorer s5 · how · something wrong here?