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io.github.kodandy/jp-crypto-tax-rules

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Machine-readable Japanese crypto-asset tax rules for AI agents: rules-as-code with citations, x402.

Code source Documentation

Installation

Ajoutez ceci à la configuration MCP de votre client (Claude Desktop : claude_desktop_config.json ; Cursor : .cursor/mcp.json ; VS Code et les autres utilisent la même forme « mcpServers »).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http jp-crypto-tax-rules 'https://jp-crypto-tax-rules-62ko7b2uwa-an.a.run.app/mcp'
Configuration JSON (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "jp-crypto-tax-rules": {
            "type": "http",
            "url": "https://jp-crypto-tax-rules-62ko7b2uwa-an.a.run.app/mcp"
        }
    }
}

Documentation

Tirée du README du projet sur GitHub, actualisée chaque semaine. Les liens ouvrent GitHub.

Sommaire
  1. JP Crypto Tax Rules — MCP Server
  2. Connect
  3. Scope & sources
  4. License

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.

ToolPricingReturns
list_tax_rulesFreeRule catalog, filterable by category / taxpayer / tax_year (resolves the applicable epoch)
get_tax_ruleFreeOne rule in full: statement, exceptions, statutory citations, sources
get_tax_parametersFreeTax-rate tables and thresholds with sources (income brackets, 20.315% breakdown, filing threshold)
get_rule_pack0.05 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).

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

Questions fréquentes

Qu'est-ce que io.github.kodandy/jp-crypto-tax-rules ?

Machine-readable Japanese crypto-asset tax rules for AI agents: rules-as-code with citations, x402.

Comment installer io.github.kodandy/jp-crypto-tax-rules ?

Il fonctionne comme serveur distant. Dans Claude Code : claude mcp add --transport http jp-crypto-tax-rules 'https://jp-crypto-tax-rules-62ko7b2uwa-an.a.run.app/mcp'. Pour les autres clients, collez la configuration JSON de cette page dans leurs réglages MCP.

Faut-il une clé API pour io.github.kodandy/jp-crypto-tax-rules ?

Son entrée au registre n'indique aucune clé ni secret obligatoire. Certaines fonctions peuvent tout de même demander un compte auprès du service auquel il se connecte.

io.github.kodandy/jp-crypto-tax-rules est-il open source ?

Oui. Son code est sur GitHub sous licence MIT.

Qui maintient io.github.kodandy/jp-crypto-tax-rules ?

Il est publié par kodandy. AI.tn le référence sans le maintenir ni le recommander.

Issu du registre MCP officiel. Être listé n'est pas une recommandation : vérifiez le code et les permissions d'un serveur avant de lui donner accès à vos données.