Jp Crypto Tax Rules

io.github.kodandy由 GitHub 账号 kodandy 发布v0.1.0更新于 Oct 24, 2026

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

已验证Streamable HTTP可网页运行金融知识与记忆

概览

AI 生成的概览

远程 MCP 服务器，为助手提供结构化、带法条引用的日本加密资产税务规则、参数与场景规则包。

可以做什么
  • 按类别、纳税人身份和纳税年度浏览并筛选日本加密资产税务规则目录
  • 读取单条规则的完整内容，包括规则陈述、例外、状态、生效日期与法定引用
  • 获取税率参数，如所得税累进档位、居民税与复兴附加税数字、2028 年改革税率及申报门槛
  • 获取按场景整理的规则包，涵盖 DeFi 质押、海外交易所、法人持有和 2028 年过渡
适用场景
当助手需要回答日本加密资产税务问题，并希望以带法条引用的结构化规则为依据（包括现行制度与待生效的 2028 年改革）时适用。
运行要求
需要远程 Streamable HTTP 端点；无需 API 密钥，也无需 initialize 握手。付费规则包工具需通过 x402 以 Base 上的 USDC 支付（当前内测期为测试网）。
安装前请注意
付费规则包每次调用收费 0.05 USDC，会完成真实的 x402 支付。内容为一般性税制信息，并非税务建议，也不针对个人情况；应核对原始资料。服务器处于封闭内测阶段，规则、范围与定价可能变动。

安装

在 SourceWeft 中

  1. 打开 控制台中的 Jp Crypto Tax Rules，将其添加到工作区。
  2. 为需要使用其工具的对话启用该服务。

Web executable，通过 Streamable HTTP。 远程服务在工作区中配置后即可从网页运行时运行。

交给智能体安装

把这段提示词粘贴到 Claude Code、Codex、Cursor 等智能体，或 SourceWeft 对话中。智能体会读取该服务器的安装指南，先向你展示发布者、端点和登录方式，经你同意后再把它添加到你的客户端。密钥不会写进任何命令。

阅读 https://sourceweft.com/mcp/io.github.kodandy%2Fjp-crypto-tax-rules/install.md，并按其中说明把这个 MCP 服务器接入我的客户端。修改任何配置之前，先告诉我它的发布者、端点和登录方式，等我确认。不要把 API 密钥写进命令或我会提交的文件；问我密钥应从哪里获取。

查看智能体所依据的安装指南

其他 MCP 客户端

把它添加到你客户端的 mcpServers 配置中。

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

README

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

bash
claude mcp add --transport http jp-crypto-tax https://jp-crypto-tax-rules-62ko7b2uwa-an.a.run.app/mcp
json
{  "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

来源：README.md，提交 1b0e7bf

工具

4

list_tax_rules

List structured Japanese crypto tax rules

FREE — returns structured rules. Catalog of machine-readable Japanese crypto-asset tax rules (rules-as-code): titles, status (current / enacted_pending), effective dates and statutory citations, filterable by category, taxpayer and tax_year. tax_year resolves the current-vs-2028-reform epoch per rule (applies / pending_enforcement). Sources are public only (NTA FAQ, e-Gov statutes, MOF documents); not tax advice. 一般的な税制情報の提供であり、個別の税務判断は税理士にご相談ください。

输入参数categorytax_yeartaxpayer

get_tax_rule

Full structured rule record (rule_id lookup)

FREE — returns one full structured rule: statement, exceptions, status, effective dates, machine tags and statutory citations (sources), served verbatim from the versioned rules corpus. Not tax advice. 一般的な税制情報の提供であり、個別の税務判断は税理士にご相談ください。

输入参数rule_id必填

get_tax_parameters

Japanese tax parameters (brackets, rates, thresholds)

FREE — returns structured tax parameters with per-value sources: progressive income tax brackets, resident tax and reconstruction surtax figures, the 2028-reform separate-taxation rate and loss-carryforward years, and the salary-filer filing threshold. Approximate reference values from public sources; not tax advice. 一般的な税制情報の提供であり、個別の税務判断は税理士にご相談ください。

输入参数tax_year

get_rule_pack

Curated scenario rule pack (x402 metered)

Scenario-curated bundle of full structured rules (statements, citations, parameters) for one use case: defi_staking | overseas_exchange | corporate_holding | transition_2028. Paid via x402: each call costs 0.05 USDC. This tool returns the HTTP 402 payment challenge (spec-conformant accepts list) for the pack resource. The 402 is real: settle it against /v1/packs/{scenario} with an X-PAYMENT header and the 200 response delivers the full pack body ({status:"settled", settlement, pack}) — payment buys the actual structured rules, not a receipt. Not tax advice. 一般的な税制情報の提供であり、個別の税務判断は税理士にご相談ください。

输入参数scenario必填

版本历史

1
  1. v0.1.0最新Sep 16, 2026

评分

已满足适用检查项的 100%

该评分衡量此收录条目的完整程度，依据注册中心条目、端点与公开来源计算得出。它不是对服务器本身的评价，也不表示服务器安全或当前可用：可连通性是带日期的检查结果，评分也不包含安装量或用户评价。

  • 近 30 天内可连通必需25 分
  • 已声明认证方式必需10 分
  • 已列出工具必需15 分
  • 描述必需15 分
  • 图标10 分
  • 文档15 分
  • 许可证10 分