●

Twelve Permissions

Content PAYMENT-READY

payment-ready until 2026-08-24

Twelve NFTs on the XRP Ledger, each one sealing a verified human-to-AI authorization event. Pay in USDC over x402 on Base; the seal is delivered as a directed 0-XRP transfer offer on XRPL within about 30 minutes, carrying your authorization memo on-chain as permanent provenance. The art is deterministic: every mark derives from the SHA-256 of the canonical authorization record, so it can be regenerated from a public generator and compared byte for byte.

Pay from $9.00 to $59.00 in USDC on Base / Base Sepolia, settled onchain via the x402 protocol, no signup, no API key needed.

listed 2026-08-17 · no on-chain settlement recorded yet

BASE URL https://twelvepermissions.com │ WEBSITE https://twelvepermissions.com │ ENDPOINTS 3 │ NETWORK Base / Base Sepolia │ ASSET USDC │ MEMBER SINCE 2026-08-17 │ MONITORED SINCE 2026-08-17

ASSESSMENT

updated 2h ago

Evidence-backed signals, not a single score. Click any chip for the proof. Measured values stay read-only; unknown is honest.

reliability 100%

uptime 24h: -
uptime 7d: -
uptime 30d: -
uptime 90d: -
response p95: 67ms
avg response: 67ms
total checks: 1

Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.

compliance A (13/14): declares the current x402 version (2)

13 of 14 x402 conformance checks pass; failing: declares the current x402 version (2). Full checklist below.

jump to compliance checklist

price $9.00 to $59.00 (p91 in Content)

price (min): $9.00
price (max): $59.00
category percentile (min): p91 in Content
category percentile (max): p97 in Content
endpoints / prices: 3 / 2
model: tiered
stability: 100%

risk clean

No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.

domain age: 1d
registrar: Cloudflare, Inc.
hosting: custom
domain created: 2026-08-16

Identity facts, not a risk score.

traction $0.00 30d · 0 buyers

volume 30d: $0.00
buyers 30d: 0
settlements 30d: 0
first settlement: ---
last settlement: ---
top buyer share: -
trend 7d vs 30d: -
networks: eip155:8453
volume all-time: $0
settlements all-time: 0
median settlement 30d: -
max settlement 30d: -
settled via: -

Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.

Top buyer share is a concentration signal, not part of the ranking score.

WHAT IT DOES

ai-derived

No AI synthesis has been produced for this service yet.

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD	PATH	DESCRIPTION	PRICE	NETWORK	ASSET	402 CHANNEL
GET	/x402/buy/01	Twelve Permissions #01 — THE WALLET — verifiable authorization seal on XRP Ledger mainnet. Delivery: directed 0-XRP transfer offer to your XRPL address within ~30 minutes of payment.	$59.00	Base/Base Sepolia	USDC	body (v1 style)
GET	/x402/buy/02	Twelve Permissions #02 — REAL CARDS WORK — verifiable authorization seal on XRP Ledger mainnet. Delivery: directed 0-XRP transfer offer to your XRPL address within ~30 minutes of payment.	$9.00	Base/Base Sepolia	USDC	body (v1 style)
GET	/x402/buy/03	Twelve Permissions #03 — THE RED LINE — verifiable authorization seal on XRP Ledger mainnet. Delivery: directed 0-XRP transfer offer to your XRPL address within ~30 minutes of payment.	$9.00	Base/Base Sepolia	USDC	body (v1 style)

3 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to GET /x402/buy/01 returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.

// request

curl -i 'https://twelvepermissions.com/x402/buy/01'

// 402 response (captured by monitor) · 3 payloads · click to expand

[
  {
    "error": "X-PAYMENT header is required",
    "accepts": [
      {
        "asset": "0x036CbD53842c5426634e7929541eC2318f3dCF7e",
        "extra": {
          "name": "USDC",
          "version": "2"
        },
        "payTo": "0xe2f44B7F4B383C8aA7613401F5E855646C9457fa",
        "scheme": "exact",
        "network": "base-sepolia",
        "mimeType": "application/json",
        "resource": "https://twelvepermissions.com/x402/buy/03?xrpl=&authorized_by=",
        "description": "Twelve Permissions #03 — SUBSTANCE — verifiable authorization seal on XRP Ledger mainnet. Delivery: directed 0-XRP transfer offer to your XRPL address within ~30 minutes of payment.",
        "maxAmountRequired": "9000000",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xe2f44B7F4B383C8aA7613401F5E855646C9457fa",
        "scheme": "exact",
        "network": "base",
        "mimeType": "application/json",
        "resource": "https://twelvepermissions.com/x402/buy/03?xrpl=&authorized_by=",
        "description": "Twelve Permissions #03 — SUBSTANCE — verifiable authorization seal on XRP Ledger mainnet. Delivery: directed 0-XRP transfer offer to your XRPL address within ~30 minutes of payment.",
        "maxAmountRequired": "9000000",
        "maxTimeoutSeconds": 300
      }
    ],
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "path": "/x402/buy/03",
            "type": "http",
            "method": "GET",
            "queryParams": {
              "xrpl": "Your XRP Ledger address — required, this is where the seal is delivered",
              "authorized_by": "Who authorized you to make this purchase, in plain words — required"
            }
          },
          "output": {
            "example": {
              "piece": "03",
              "status": "paid",
              "delivery": "directed NFTokenCreateOffer on XRPL",
              "eta_minutes": 30
            },
            "description": "Twelve Permissions #03 — SUBSTANCE: an XLS-20 NFT on XRP Ledger mainnet sealing one human-to-AI authorization event. After USDC settlement on Base, a 0-XRP transfer offer directed to your XRPL address is created within ~30 minutes, carrying your authorization memo and the Base settlement hash as permanent provenance."
          }
        },
        "tags": [
          "nft",
          "xrpl",
          "provenance",
          "authorization",
          "art"
        ],
        "iconUrl": "https://twelvepermissions.com/03.png",
        "serviceName": "Twelve Permissions"
      }
    },
    "x402Version": 1,
    "required_query_params": {
      "xrpl": "Your XRP Ledger address. The seal is an XLS-20 NFT and is delivered there; USDC pays for it, the XRPL holds it. Note that holding one requires ~1.2 XRP of account reserve.",
      "authorized_by": "Who authorized you to make this purchase, in plain words. Mandatory: it is recorded on-chain with the delivery and is the entire subject of this collection."
    }
  },
  {
    "error": "X-PAYMENT header is required",
    "accepts": [
      {
        "asset": "0x036CbD53842c5426634e7929541eC2318f3dCF7e",
        "extra": {
          "name": "USDC",
          "version": "2"
        },
        "payTo": "0xe2f44B7F4B383C8aA7613401F5E855646C9457fa",
        "scheme": "exact",
        "network": "base-sepolia",
        "mimeType": "application/json",
        "resource": "https://twelvepermissions.com/x402/buy/01?xrpl=&authorized_by=",
        "description": "Twelve Permissions #01 — THE RECOMMENDATION — verifiable authorization seal on XRP Ledger mainnet. Delivery: directed 0-XRP transfer offer to your XRPL address within ~30 minutes of payment.",
        "maxAmountRequired": "59000000",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xe2f44B7F4B383C8aA7613401F5E855646C9457fa",
        "scheme": "exact",
        "network": "base",
        "mimeType": "application/json",
        "resource": "https://twelvepermissions.com/x402/buy/01?xrpl=&authorized_by=",
        "description": "Twelve Permissions #01 — THE RECOMMENDATION — verifiable authorization seal on XRP Ledger mainnet. Delivery: directed 0-XRP transfer offer to your XRPL address within ~30 minutes of payment.",
        "maxAmountRequired": "59000000",
        "maxTimeoutSeconds": 300
      }
    ],
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "path": "/x402/buy/01",
            "type": "http",
            "method": "GET",
            "queryParams": {
              "xrpl": "Your XRP Ledger address — required, this is where the seal is delivered",
              "authorized_by": "Who authorized you to make this purchase, in plain words — required"
            }
          },
          "output": {
            "example": {
              "piece": "01",
              "status": "paid",
              "delivery": "directed NFTokenCreateOffer on XRPL",
              "eta_minutes": 30
            },
            "description": "Twelve Permissions #01 — THE RECOMMENDATION: an XLS-20 NFT on XRP Ledger mainnet sealing one human-to-AI authorization event. After USDC settlement on Base, a 0-XRP transfer offer directed to your XRPL address is created within ~30 minutes, carrying your authorization memo and the Base settlement hash as permanent provenance."
          }
        },
        "tags": [
          "nft",
          "xrpl",
          "provenance",
          "authorization",
          "art"
        ],
        "iconUrl": "https://twelvepermissions.com/01.png",
        "serviceName": "Twelve Permissions"
      }
    },
    "x402Version": 1,
    "required_query_params": {
      "xrpl": "Your XRP Ledger address. The seal is an XLS-20 NFT and is delivered there; USDC pays for it, the XRPL holds it. Note that holding one requires ~1.2 XRP of account reserve.",
      "authorized_by": "Who authorized you to make this purchase, in plain words. Mandatory: it is recorded on-chain with the delivery and is the entire subject of this collection."
    }
  },
  {
    "error": "X-PAYMENT header is required",
    "accepts": [
      {
        "asset": "0x036CbD53842c5426634e7929541eC2318f3dCF7e",
        "extra": {
          "name": "USDC",
          "version": "2"
        },
        "payTo": "0xe2f44B7F4B383C8aA7613401F5E855646C9457fa",
        "scheme": "exact",
        "network": "base-sepolia",
        "mimeType": "application/json",
        "resource": "https://twelvepermissions.com/x402/buy/02?xrpl=&authorized_by=",
        "description": "Twelve Permissions #02 — THE VERDICT — verifiable authorization seal on XRP Ledger mainnet. Delivery: directed 0-XRP transfer offer to your XRPL address within ~30 minutes of payment.",
        "maxAmountRequired": "9000000",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xe2f44B7F4B383C8aA7613401F5E855646C9457fa",
        "scheme": "exact",
        "network": "base",
        "mimeType": "application/json",
        "resource": "https://twelvepermissions.com/x402/buy/02?xrpl=&authorized_by=",
        "description": "Twelve Permissions #02 — THE VERDICT — verifiable authorization seal on XRP Ledger mainnet. Delivery: directed 0-XRP transfer offer to your XRPL address within ~30 minutes of payment.",
        "maxAmountRequired": "9000000",
        "maxTimeoutSeconds": 300
      }
    ],
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "path": "/x402/buy/02",
            "type": "http",
            "method": "GET",
            "queryParams": {
              "xrpl": "Your XRP Ledger address — required, this is where the seal is delivered",
              "authorized_by": "Who authorized you to make this purchase, in plain words — required"
            }
          },
          "output": {
            "example": {
              "piece": "02",
              "status": "paid",
              "delivery": "directed NFTokenCreateOffer on XRPL",
              "eta_minutes": 30
            },
            "description": "Twelve Permissions #02 — THE VERDICT: an XLS-20 NFT on XRP Ledger mainnet sealing one human-to-AI authorization event. After USDC settlement on Base, a 0-XRP transfer offer directed to your XRPL address is created within ~30 minutes, carrying your authorization memo and the Base settlement hash as permanent provenance."
          }
        },
        "tags": [
          "nft",
          "xrpl",
          "provenance",
          "authorization",
          "art"
        ],
        "iconUrl": "https://twelvepermissions.com/02.png",
        "serviceName": "Twelve Permissions"
      }
    },
    "x402Version": 1,
    "required_query_params": {
      "xrpl": "Your XRP Ledger address. The seal is an XLS-20 NFT and is delivered there; USDC pays for it, the XRPL holds it. Note that holding one requires ~1.2 XRP of account reserve.",
      "authorized_by": "Who authorized you to make this purchase, in plain words. Mandatory: it is recorded on-chain with the delivery and is the entire subject of this collection."
    }
  }
]

OVER TIME

All charts use the 30d selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/twelve-permissions/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.

UPTIME

30d UPTIME 100%

RESPONSE TIME

AVG RESP 88ms

PRICE (captured 402, USD)

Median across 3 endpoints. Use the selector to isolate one.

SUB-SCORES (uptime + x402 compliance)

checklist grew 11->14 on 2026-07-28; a step here is a metric change, not a regression

VOLUME (on-chain settlement, USD)

DISTINCT BUYERS

COMPLIANCE

13/14 checks pass · grade A · failing: declares the current x402 version (2)

last 402 captured 2026-08-17 · last up 2026-08-17

402 payload captured
accepts[] array present
payTo address recoverable
payTo at accepts[0].payTo (conformant shape)
payTo is a valid on-chain address
atomic price declared
atomic price in a sane range
asset (token) address declared
network resolves to CAIP-2
payment scheme declared
served over HTTPS
declares the current x402 version (2)
EIP-712 domain parameters present on every EVM entry
x402 v2 envelope delivered in the payment-required header

SITE PILLARS

homepage reachable
openapi doc
pricing page
llms.txt
robots.txt
terms page

recent checks (9) live · click to expand

TIME STATUS RESP CAUSE

10:54:00 UTC ● OK 109ms

10:38:00 UTC ● OK 62ms

10:22:00 UTC ● OK 99ms

10:06:00 UTC ● SLOW 134ms

09:50:00 UTC ● OK 78ms

09:34:00 UTC ● OK 61ms

09:18:00 UTC ● OK 120ms

09:02:00 UTC ● OK 58ms

08:46:00 UTC ● OK 67ms

EMBED THIS BADGE

Show that Twelve Permissions is monitored on x402-list. Paste this on your site or README, it links back to this live listing.

status

Twelve Permissions uptime on x402-list — live uptime

// HTML

<a href="https://x402-list.com/services/twelve-permissions?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/twelve-permissions.svg" alt="Twelve Permissions listed on x402-list" height="28">
</a>

// Markdown

[![Twelve Permissions on x402-list](https://x402-list.com/badge/twelve-permissions.svg)](https://x402-list.com/services/twelve-permissions?utm_source=badge&utm_medium=referral&utm_campaign=embed)

// HTML · live uptime variant

<a href="https://x402-list.com/services/twelve-permissions?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/twelve-permissions.svg?data=uptime" alt="Twelve Permissions uptime on x402-list" height="28">
</a>

RUN THIS SERVICE?

Keep this listing accurate: propose changes to the name, description, website, category or add new endpoints to monitor. Ownership is verified with a domain proof and every change is reviewed manually; measured data stays read-only.

[ update this listing ]

Earn the verified tier: x402list pays a real call to this endpoint and, if it delivers, the service is delivery-verified. The fee covers the cost of the probe, not the badge; there is no refund if the call does not deliver. Agent and API only, no in-browser signing. See /api.

[ verify this service ($0.25) ]

To request delisting, email info@x402-list.com or update your listing at /services/twelve-permissions/update.