com.twelvepermissions/twelve-permissions

up checked 2026-11-11T10:39:00.470Z

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Publisher-provided title

Twelve Permissions

Publisher-provided description

Browse, verify and buy Twelve Permissions NFTs on XRP Ledger. Every claim is checkable.

Summary by lookupd

Lists, verifies and purchases NFT authorization seals on XRP Ledger, including USDC x402 payment and buy-transaction construction.

Install

Claude Code, remote (streamable-http)

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

Codex, remote (streamable-http)

codex mcp add twelve-permissions --url https://twelvepermissions.com/mcp

Cursor, remote (streamable-http) → .cursor/mcp.json

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

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Tools (6 tools)

Publisher-provided text

• 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
• 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
• 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 m
• 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 veri
• 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 a

Details

• Version: 1.0.0
• Transports: streamable-http
• Uptime (7 days): 100%
• Median latency: 207 ms
• First indexed: 2026-11-01T08:59:39.063Z
• Last seen in registry: 2026-11-01T08:59:39.063Z
• Repository: https://github.com/tsharpe2282-web/twelve-permissions
• Website: https://twelvepermissions.com

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