Twelve Permissions

Connect Remote server

claude mcp add --transport http twelve-permissions https://twelvepermissions.com/mcp

{
  "mcpServers": {
    "twelve-permissions": {
      "url": "https://twelvepermissions.com/mcp"
    }
  }
}

{
  "servers": {
    "twelve-permissions": {
      "type": "http",
      "url": "https://twelvepermissions.com/mcp"
    }
  }
}

Settings > Connectors > Add custom connector
URL: https://twelvepermissions.com/mcp

Tools 6 found in our last check

• 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.

• get_piece

  Get full metadata for one seal by id ("01".."12"): the canonical authorization record, its sha256, image URLs, and mainnet mint transaction.

• get_buy_transaction

  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.

• 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.

• verify_seal

  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.

• 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.

Details

More other servers See all

• SalaryNet Payroll

  Gross-to-net pay and employer cost for US, PH, NG, ID, IN, BR, KE, VN with official sources.

• Auto Öz

  Auto Öz: Kontakt, Standorte, Öffnungszeiten, Leistungen und Angebote, Freie Termine, Termin…

• CGC Airport Transfers

  Fixed-price quotes and bookings for private airport transfers: Gold Coast, Brisbane, Byron Bay.

• Coral

  Private, non-explicit intimacy exercises, scripts and a couples quiz for adults 18+.

• Business valuation calculator

  Estimates what a buyer might pay for a small agency, service or SaaS business, in US dollars.

• BuildYourWolfpack

  Roast-to-order coffee with a game built in: missions, Pack Points, and your own wolf pack.