jp-crypto-tax-rules
Machine-readable Japanese crypto-asset tax rules for AI agents: rules-as-code with citations, x402.
使うべきか
品質と安全性
検出事項（2）
- LOWTool 'get_tax_rule' description lacks action verbget_tax_rule 内
- LOWTool 'get_tax_parameters' description lacks action verbget_tax_parameters 内
ツール定義とプロトコルへの準拠に関する自動分析に基づいています。
コンテキストコスト
これは、サーバーのツールがモデルのコンテキストに読み込まれるたびに消費されるおおよそのトークン数です。数が多いほど、ほかのタスクに使える注意が減ります。
インストール
ワンクリックインストール
これを `claude_desktop_config.json` ファイルに追加してください:
{
"mcpServers": {
"jp-crypto-tax-rules": {
"url": "https://jp-crypto-tax-rules-62ko7b2uwa-an.a.run.app/mcp"
}
}
}リモートエンドポイント
https://jp-crypto-tax-rules-62ko7b2uwa-an.a.run.app/mcpstreamable-httpできること
ツール一覧
ツール（4）
🟢list_tax_rules(category, taxpayer, tax_year)
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。
入力スキーマ
{
"type": "object",
"properties": {
"category": {
"description": "Category filter: corporate | cost_basis | filing | income_classification | reform_2028 | taxable_events",
"type": "string"
},
"taxpayer": {
"description": "Taxpayer filter: all | corporate | individual",
"type": "string"
},
"tax_year": {
"description": "Tax year to resolve rule applicability, e.g. 2026 or 2028",
"type": "integer",
"minimum": 2000,
"maximum": 2100
}
},
"$schema": "http://json-schema.org/draft-07/schema#"
}🟢get_tax_rule(rule_id)
FREE — returns one full structured rule: statement, exceptions, status, effective dates, machine tags and statutory citations (sources), served verbatim from the versioned rules corpus. Not tax advice. 一般的な税制情報の提供であり、個別の税務判断は税理士にご相談ください。
入力スキーマ
{
"type": "object",
"properties": {
"rule_id": {
"type": "string",
"description": "Rule id, e.g. jp.crypto.income.classification.individual"
}
},
"required": [
"rule_id"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}🟢get_tax_parameters(tax_year)
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。
入力スキーマ
{
"type": "object",
"properties": {
"tax_year": {
"description": "Tax year for epoch annotation of pending-reform rules, e.g. 2026 or 2028",
"type": "integer",
"minimum": 2000,
"maximum": 2100
}
},
"$schema": "http://json-schema.org/draft-07/schema#"
}🟢get_rule_pack(scenario)
Scenario-curated bundle of full structured rules (statements, citations, parameters) for one use case: defi_staking | overseas_exchange | corporate_holding | transition_2028. Paid via x402: each call costs 0.05 USDC. This tool returns the HTTP 402 payment challenge (spec-conformant accepts list) for the pack resource. The 402 is real: settle it against /v1/packs/{scenario} with an X-PAYMENT header and the 200 response delivers the full pack body ({status:"settled", settlement, pack}) — payment buys the actual structured rules, not a receipt. Not tax advice. 一般的な税制情報の提供であり、個別の税務判断は税理士にご相談ください。
入力スキーマ
{
"type": "object",
"properties": {
"scenario": {
"type": "string",
"enum": [
"defi_staking",
"overseas_exchange",
"corporate_holding",
"transition_2028"
],
"description": "Scenario pack to retrieve: defi_staking | overseas_exchange | corporate_holding | transition_2028"
}
},
"required": [
"scenario"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}コミュニティ
エビデンス