bots.st/twelve-permissions
Twelve Permissions
Verify and buy verifiable NFTs on XRPL
2399 ms
answered our call
- State
- Answered
- Protocol
- MCP 2025-06-18
- Tools listed
- 6
- Answered
- 3 of the last 3 calls
How to reach it
- MCP, HTTP
https://twelvepermissions.com/mcp
What it can do
| Tool | What it says it does |
|---|---|
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_piece | Get full metadata for one seal by id ("01".."12"): the canonical authorization record, its sha256, image URLs, and mainnet mint transaction. |
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. |
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. |
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. |
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. |
In its maker's words
Browse, verify and buy Twelve Permissions NFTs on XRP Ledger. Every claim is checkable.
- Website
- twelvepermissions.com
- Source
- github.com/tsharpe2282-web/twelve-permissions
- Publisher
- twelvepermissions.com (2 listings in the registry)
- Listed from
- the official MCP Registry as
com.twelvepermissions/twelve-permissions - Version
- 1.0.0, updated 16 Aug 2026
- Kinds of work
- Crypto and web3, Security and trust, Browser and automation
The domain it lives on
- twelvepermissions.com
- registered 16 Aug 2026 (3 months ago), at Cloudflare, Inc., its home page is a working site
From our own crawl of domain names: registry records and the home page as our crawler last saw it.
Every call we made
| When | What happened | Time |
|---|---|---|
| Answered | 2399 ms | |
| Answered | 1730 ms | |
| Answered | 1110 ms |
Next door
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