The Twelve Permissions MCP server,
connected in one click.
Browse, verify and buy Twelve Permissions NFTs on XRP Ledger. Every claim is checkable. Connect the official Twelve Permissions MCP server to Claude, ChatGPT, or Cursor through gate — one gateway URL, no config files, security-checked.
Free to start · No credit card · No hosting needed
Add Twelve Permissions to your AI in one minute
Pick your client. Copy, paste, done — or let gate handle sign-ins and policies for you.
claude mcp add --transport http twelve-permissions https://twelvepermissions.com/mcpRun in your terminal, then restart Claude Code.
Twelve Permissions · https://twelvepermissions.com/mcp
What your AI can do with Twelve Permissions
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “list_pieces”: List all Twelve Permissions seals: verifiable NFTs on XRP Ledger mainnet, each sealing a real human-to-AI authorization event. Returns names.”
“Use “get_piece”: Get full metadata for one seal by id ("01".."12"): the canonical authorization record, its sha256, image URLs, and mainnet mint transaction.”
“Use “get_buy_transaction”: Construct the exact XRPL NFTokenAcceptOffer transaction to buy a seal, including the authorization-memo protocol your principal must approve.”
“Use “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.”
How secure is the Twelve Permissions MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how Twelve Permissions holds up.
Official endpoint
Operated by Twelve Permissions (twelvepermissions.com) at its documented MCP endpoint — not a third-party mirror or community re-host.
No sign-in needed
This server only exposes public data — no account and no credentials are involved when you connect.
Scanned before it goes live
gate checks every tool for prompt injection, hidden instructions, data-exfiltration hints, and over-broad permissions before the server is available through your gateway.
Watched for drift
If Twelve Permissions adds or changes tools later, gate re-scans and alerts you — before your AI acts on the change.
Connected in three steps
Connect your gate
Add one gateway URL to Claude, ChatGPT, or any MCP client. One-time setup, about two minutes.
Pick Twelve Permissions
Choose Twelve Permissions in the gate directory. No sign-in needed.
Use it anywhere
Twelve Permissions's tools are live in every AI client you've connected — with rules and logging built in.
Free to start · No credit card · No hosting needed
The actual tools Twelve Permissions exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
list_pieces — List all Twelve Permissions seals: verifiable NFTs on XRP Ledger mainnet, each sealing a real human-to-AI authorization event. Returns names
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
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
verify_seal — Verify a seal from first principles: recomputes sha256 of the canonical event record server-side and compares to the published event hash. F
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
Who runs the Twelve Permissions MCP server?
The Twelve Permissions MCP server at a glance
https://twelvepermissions.com/mcpQuestions, answered
Is there an official Twelve Permissions MCP server?
Yes — Twelve Permissions operates its own remote MCP server at twelvepermissions.com. gate connects you to that official endpoint and adds security scanning, per-tool access rules, and an activity log on top.
How do I connect Twelve Permissions to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick Twelve Permissions in the directory. No account or sign-in is needed. From then on, Twelve Permissions's tools are available in every client you've connected to gate.
Do I need to host anything?
No. Twelve Permissions runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the Twelve Permissions MCP server safe to connect?
It's the vendor's official endpoint, and gate scans its tools for prompt injection and hidden instructions before it goes live, re-checks it whenever it changes, and lets you allow, block, or require approval for every single tool.
Is it free?
Yes — you can get started with gate for free and connect Twelve Permissions in minutes. No credit card required.
Connect more than just Twelve Permissions
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up Twelve Permissions in: Claude · Claude Code · ChatGPT · Cursor · VS Code
Give your AI Twelve Permissions — safely.
One URL. All MCPs. Full control. Free to start.
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