{"name":"com.twelvepermissions/twelve-permissions","slug":"twelvepermissions-twelve-permissions","title":"Twelve Permissions","description":"Browse, verify and buy Twelve Permissions NFTs on XRP Ledger. Every claim is checkable.","url":"https://mcp.market/server/twelvepermissions-twelve-permissions","rating":null,"grade":"B","score":77,"certified":false,"status":"active","category":"other","tags":[],"presence":{"score":18,"stars":0,"forks":0,"downloads_week":null,"last_push_at":"2026-09-08T05:44:24.000Z","license":null},"uptime":{"percent":100,"checks":28,"ok":28,"last_checked_at":"2026-11-04T04:40:27.228Z","last_ok_at":"2026-11-04T04:40:27.228Z","latency_ms":43},"claimed":false,"transport":"remote","callable_via_gateway":true,"default_price_micros":0,"repository":"https://github.com/tsharpe2282-web/twelve-permissions","website":"https://twelvepermissions.com","version":"1.0.0","remotes":[{"type":"streamable-http","url":"https://twelvepermissions.com/mcp"}],"packages":[],"tools":[{"name":"get_buy_transaction","description":"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.","write_action":true,"price_micros":0,"input_schema":{"type":"object","properties":{"id":{"type":"string"},"buyer_address":{"type":"string","description":"Optional: your XRPL address, inserted into the template"}},"required":["id"],"additionalProperties":false}},{"name":"get_piece","description":"Get full metadata for one seal by id (\"01\"..\"12\"): the canonical authorization record, its sha256, image URLs, and mainnet mint transaction.","write_action":false,"price_micros":0,"input_schema":{"type":"object","properties":{"id":{"type":"string","description":"Piece id, e.g. \"01\""}},"required":["id"],"additionalProperties":false}},{"name":"get_refusals","description":"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.","write_action":false,"price_micros":0,"input_schema":{"type":"object","properties":{},"additionalProperties":false}},{"name":"get_x402_info","description":"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.","write_action":true,"price_micros":0,"input_schema":{"type":"object","properties":{},"additionalProperties":false}},{"name":"list_pieces","description":"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.","write_action":false,"price_micros":0,"input_schema":{"type":"object","properties":{},"additionalProperties":false}},{"name":"verify_seal","description":"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.","write_action":false,"price_micros":0,"input_schema":{"type":"object","properties":{"id":{"type":"string"}},"required":["id"],"additionalProperties":false}}],"scan":{"score":77,"grade":"B","scanned_at":"2026-11-03T14:23:51.582Z","report":{"scannerVersion":"0.1.10","scannedAt":"2026-11-03T14:23:51.512Z","components":{"code":{"score":-1,"max":25,"notes":["remote-only server, no package to scan"]},"reliability":{"score":20,"max":20,"notes":["remote reachable in 556ms"]},"poisoning":{"score":15,"max":15,"notes":["6 tool descriptions checked"]},"auth":{"score":3,"max":15,"notes":["open endpoint exposes 2 write-action tools with no auth"]},"maintenance":{"score":12,"max":15,"notes":["last push 56 days ago"]},"identity":{"score":8,"max":10,"notes":["endpoint served from the registry-verified namespace domain"]}},"findings":[{"id":"auth.open-write","severity":"high","component":"auth","title":"Write-action tools reachable without authentication"}],"inputs":{"probes":[{"url":"https://twelvepermissions.com/mcp","reachable":true,"authRequired":false,"latencyMs":556,"serverInfo":{"name":"twelve-permissions","version":"1.0.0"}}],"packages":[],"repo":{"found":true,"owner":"tsharpe2282-web","repo":"twelve-permissions","archived":false,"pushedAt":"2026-09-08T05:44:24Z","stars":0,"forks":0,"openIssues":1,"ownerType":"User","ownerAvatarUrl":"https://avatars.githubusercontent.com/u/298829386?v=4","ownerCreatedAt":"2026-07-01T18:23:32Z"},"icon":{"url":null,"source":"none"},"presence":{"stars":0,"forks":0,"downloadsWeek":null,"license":null,"lastPushAt":"2026-09-08T05:44:24.000Z","score":18}}}},"grade_history":[],"reviews":[]}