com.twelvepermissions/twelve-permissions · v1.0.0 · crypto-web3
Twelve Permissions is healthy: it completed an MCP handshake in 878 ms and exposes 6 tools.
Browse, verify and buy Twelve Permissions NFTs on XRP Ledger. Every claim is checkable.
Endpoint: https://twelvepermissions.com/mcp (streamable-http)
Repository · Website · JSON · Add to my inventory
| Users (last 30 days) | 0 |
| Handshake | Healthy |
| Auth needed | None |
| Tool count | 6 |
| Latency | 878 ms |
| Last checked (UTC) | 2026-10-16T01:05:09.584Z |
| Checked (UTC) | Status | Latency | Error |
|---|---|---|---|
| 2026-10-16T01:05:09.584Z | Healthy | 878 | |
| 2026-10-14T22:35:38.286Z | Healthy | 1610 |
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. |