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JP Crypto Tax Rules MCP

by kodandy
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Remote

JP Crypto Tax Rules — MCP Server

Remote MCP server exposing machine-readable rules-as-code for Japanese crypto-asset taxation to AI agents — structured rules with statutory citations, tax parameters, and the current-vs-2028-reform transition logic. Built from public sources only.

Not tax advice. This is general tax-system information served as structured rules with citations. It does not respond to individual circumstances and is not a substitute for advice from a licensed tax professional (税理士). Always verify against primary sources.

Tool

Pricing

Returns

list_tax_rules

Free

Rule catalog, filterable by category / taxpayer / tax_year (resolves the applicable epoch)

get_tax_rule

Free

One rule in full: statement, exceptions, statutory citations, sources

get_tax_parameters

Free

Tax-rate tables and thresholds with sources (income brackets, 20.315% breakdown, filing threshold)

get_rule_pack

0.05 USDC (x402)

Scenario-curated bundle: defi_staking, overseas_exchange, corporate_holding, transition_2028

The paid tool genuinely fulfills: a settled x402 payment returns the rule pack itself, not a placeholder.

Connect

claude mcp add --transport http jp-crypto-tax https://jp-crypto-tax-rules-62ko7b2uwa-an.a.run.app/mcp
{
  "mcpServers": {
    "jp-crypto-tax": {
      "type": "streamable-http",
      "url": "https://jp-crypto-tax-rules-62ko7b2uwa-an.a.run.app/mcp"
    }
  }
}

No API key and no initialize handshake required. USDC on Base (testnet during the current private beta).

Related MCP server: tax-law-mcp

Scope & sources

  • Epochs: current regime (miscellaneous income, total-average / moving-average cost basis, through FY2027 returns) and the FY2026 reform (20.315% separate taxation, 3-year loss carryforward) marked enacted_pending until the enforcement date is fixed.

  • Sources: 国税庁 暗号資産FAQ (令和7年12月版), the relevant 所得税法 / 法人税法 / 消費税法 provisions via e-Gov, and the 令和8年度税制改正大綱. Every rule carries its own citations.

  • Status: closed private beta. Rules, scope and pricing may change. Source of the gateway lives in a private repository; this repo hosts the public MCP documentation and registry manifest.

License

MIT

This server cannot be deployed

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Maintenance

ActivityInactive
ResponsivenessNo issues

Resources

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