# 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.

## Facts
- Page: https://tashan.sh/capability/pkg-kaisha-mcp
- tashan id: pkg:kaisha-mcp
- Source: https://github.com/vladic-corp/kaisha-api
- npm: https://www.npmjs.com/package/kaisha-mcp
- Type: npm
- Category: finance
- tashan score: 44.0 / 100
- Adoption: 18.0
- Upkeep: 57.0
- Freshness: 95.0
- Evidence coverage: 100% of the inputs this score can use
- Health: active
- Instruction depth: not yet graded
- npm downloads: 19/week
- Official: no

## Install

```sh
claude mcp add kaisha -- npx -y kaisha-mcp
```

## Security audit
Not scanned. We audit npm-published capabilities; this one has no npm package we can resolve, or has not reached the queue. This is not a clean bill of health.

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Measured 2026-08-04 by tashan (https://tashan.sh) from public evidence. Scorer s5.