Twelve Permissions
Browse, verify and buy Twelve Permissions NFTs on XRP Ledger. Every claim is checkable.
使うべきか
品質と安全性
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": {
"twelve-permissions": {
"url": "https://twelvepermissions.com/mcp"
}
}
}リモートエンドポイント
https://twelvepermissions.com/mcpstreamable-httpできること
ツール一覧
ツール（6）
🟢list_pieces
List all Twelve Permissions seals: verifiable NFTs on XRP Ledger mainnet, each sealing a real human-to-AI authorization event. Returns names, prices, live offer indexes, and sold status.
入力スキーマ
{
"type": "object",
"properties": {},
"additionalProperties": false
}🟢get_piece(id)
Get full metadata for one seal by id ("01".."12"): the canonical authorization record, its sha256, image URLs, and mainnet mint transaction.
入力スキーマ
{
"type": "object",
"properties": {
"id": {
"type": "string",
"description": "Piece id, e.g. \"01\""
}
},
"required": [
"id"
],
"additionalProperties": false
}🟢get_buy_transaction(id, buyer_address)
Construct the exact XRPL NFTokenAcceptOffer transaction to buy a seal, including the authorization-memo protocol your principal must approve. Read the rules in the response before submitting.
入力スキーマ
{
"type": "object",
"properties": {
"id": {
"type": "string"
},
"buyer_address": {
"type": "string",
"description": "Optional: your XRPL address, inserted into the template"
}
},
"required": [
"id"
],
"additionalProperties": false
}🟢get_x402_info
Pay with USDC over HTTP instead of XRP: the x402 purchase rail (Base). Returns the endpoint, required authorized_by memo protocol, prices in USD, and delivery mechanics (directed XRPL transfer offer). You still need an XRPL address to hold the seal.
入力スキーマ
{
"type": "object",
"properties": {},
"additionalProperties": false
}⚪verify_seal(id)
Verify a seal from first principles: recomputes sha256 of the canonical event record server-side and compares to the published event hash. Full independent verification instructions included.
入力スキーマ
{
"type": "object",
"properties": {
"id": {
"type": "string"
}
},
"required": [
"id"
],
"additionalProperties": false
}🟢get_refusals
The other half of the collection: the hash-chained ledger of the agent's standing constraints — what it will not do — including the erratum where it corrected an earlier, exaggerated version of its own record. Both anchors are on mainnet. Not for sale, ever.
入力スキーマ
{
"type": "object",
"properties": {},
"additionalProperties": false
}コミュニティ
エビデンス