Twelve Permissions

com.twelvepermissions/twelve-permissionsVersion 1.0.0

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

Status

Responds142 msNov 14, 2026, 14:20 UTCAnswered our handshake without sign-in.

Registry data may be out of date

We could not refresh it, so this page shows the last copy.

Last checked: Nov 14, 2026, 14:20 UTC
Latency: 142 ms
Remotes responding: 1 of 1
Sign-in: No sign-in
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 22:14 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://twelvepermissions.com/mcpResponds142 msNov 14, 2026, 14:20 UTC

No sign-in

Claude Code

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

Claude Desktop and claude.ai

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Settings > Connectors > Add custom connector
Name: twelve-permissions
Remote MCP server URL: https://twelvepermissions.com/mcp

Cursor

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

VS Code

code --add-mcp '{"name":"twelve-permissions","type":"http","url":"https://twelvepermissions.com/mcp"}'

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Tools

6 tools

Tools of Twelve Permissions
	Description		Read-only	Idempotent	Open world
`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.	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.	Not declared	Not declared	Not declared	Not declared
`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 full metadata for one seal by id ("01".."12"): the canonical authorization record, its sha256, image URLs, and mainnet mint transaction.	Not declared	Not declared	Not declared	Not declared
`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.	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.	Not declared	Not declared	Not declared	Not declared
`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.	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.	Not declared	Not declared	Not declared	Not declared
`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.	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.	Not declared	Not declared	Not declared	Not declared
`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.	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.	Not declared	Not declared	Not declared	Not declared

Details

Registry status: Active
Published: Aug 16, 2026
Updated: Aug 16, 2026
Website: https://twelvepermissions.com/⁠ (opens in a new tab)
Repository: https://github.com/tsharpe2282-web/twelve-permissions⁠ (opens in a new tab)
Categories (suggested): Invoicing and accounting Finance and paymentsSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared

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