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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "twelve-permissions": {
      "type": "http",
      "url": "https://twelvepermissions.com/mcp"
    }
  }
}

claude mcp add --transport http twelve-permissions https://twelvepermissions.com/mcp

[mcp_servers.twelve-permissions]
url = "https://twelvepermissions.com/mcp"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "twelve-permissions": {
      "type": "remote",
      "url": "https://twelvepermissions.com/mcp",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "twelve-permissions": {
      "type": "http",
      "url": "https://twelvepermissions.com/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=twelve-permissions&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vdHdlbHZlcGVybWlzc2lvbnMuY29tL21jcCJ9"
}

{
  "servers": {
    "twelve-permissions": {
      "type": "http",
      "url": "https://twelvepermissions.com/mcp"
    }
  }
}

{
  "mcpServers": {
    "twelve-permissions": {
      "httpUrl": "https://twelvepermissions.com/mcp"
    }
  }
}

extensions:
  "twelve-permissions":
    enabled: true
    name: "twelve-permissions"
    type: streamable_http
    uri: "https://twelvepermissions.com/mcp"
    timeout: 300

Quality 79 / 100good

protocol75 · weight 25

warn
protocol.modernnewest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
n/a
protocol.statelessonly applies to 2026-07-28 servers
pass
protocol.transportstreamable HTTP
n/a
protocol.list_ttlonly applies to 2026-07-28 servers

authorizationn/a · weight 15

n/a
auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
n/a
auth.secret_in_urlno templated URL

tool hygiene71 · weight 30

pass
tools.descriptionsevery tool has a description
pass
tools.description_lengthdescriptions are concise
pass
tools.schemasevery tool has an object input schema
fail
tools.annotationsno tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
fail
tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: get_refusals (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_piece (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); verify_seal (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …
pass
tools.token_costabout 488 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stability100 · weight 15

pass
stability.changesno tool changes in 30 days
pass
stability.rug_pullno tool changed its meaning under the same name

dependenciesn/a · weight 15

n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

6 tools, about 488 tokens to load them all · tool set c57fca8bb7e0 · checked 2026-10-20 20:46 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 92 / 100

provenance85

liveness98

freshness85

hygiene100

+repository +dns-namespace +website +reachable +uptime-95% ~updated-66d-ago

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://twelvepermissions.com/mcp` streamable-http	none	yes	95%	194 ms	2025-11-25	2026-10-20

Tools (6)

`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.

Schemas: list_tools.

Also listed as

1 other active names share this repository: com.twelvepermissions/x402-doctor

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Official server.json

{
  "name": "com.twelvepermissions/twelve-permissions",
  "title": "Twelve Permissions",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://twelvepermissions.com/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "1.0.0",
  "repository": {
    "url": "https://github.com/tsharpe2282-web/twelve-permissions",
    "source": "github"
  },
  "websiteUrl": "https://twelvepermissions.com",
  "description": "Browse, verify and buy Twelve Permissions NFTs on XRP Ledger. Every claim is checkable."
}