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{
  "mcpServers": {
    "shinjuku-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]",
        "mcp",
        "--max-payment",
        "--max-session",
        "--pool",
        "CDtxyRjCUs2pu7t3U9TwtpnZwyxBFZ4dKXvb4RCmXHXv",
        "--program",
        "8PYPw3FSFTMbvSneXdcoH6jNoN4VD23nHwPY2A2riUy1",
        "--memo-service",
        "https://pay.shinjukustaition.com",
        "--passphrase-file",
        "--proof-tools",
        "--exit-proof-tools",
        "--profile",
        "--unshield-to",
        "--max-unshield",
        "--max-shield",
        "--max-per-host-day",
        "--allow-host",
        "--rpc-file",
        "--no-auto-pockets"
      ],
      "env": {
        "SHIELDED_WALLET_HOME": "${SHIELDED_WALLET_HOME}",
        "SHIELDED_WALLET_PASSPHRASE": "${SHIELDED_WALLET_PASSPHRASE}"
      }
    }
  }
}

claude mcp add shinjuku-mcp -e "SHIELDED_WALLET_HOME=${SHIELDED_WALLET_HOME}" -e "SHIELDED_WALLET_PASSPHRASE=${SHIELDED_WALLET_PASSPHRASE}" -- npx -y [email protected] mcp --max-payment --max-session --pool CDtxyRjCUs2pu7t3U9TwtpnZwyxBFZ4dKXvb4RCmXHXv --program 8PYPw3FSFTMbvSneXdcoH6jNoN4VD23nHwPY2A2riUy1 --memo-service https://pay.shinjukustaition.com --passphrase-file --proof-tools --exit-proof-tools --profile --unshield-to --max-unshield --max-shield --max-per-host-day --allow-host --rpc-file --no-auto-pockets

[mcp_servers.shinjuku-mcp]
command = "npx"
args = ["-y", "[email protected]", "mcp", "--max-payment", "--max-session", "--pool", "CDtxyRjCUs2pu7t3U9TwtpnZwyxBFZ4dKXvb4RCmXHXv", "--program", "8PYPw3FSFTMbvSneXdcoH6jNoN4VD23nHwPY2A2riUy1", "--memo-service", "https://pay.shinjukustaition.com", "--passphrase-file", "--proof-tools", "--exit-proof-tools", "--profile", "--unshield-to", "--max-unshield", "--max-shield", "--max-per-host-day", "--allow-host", "--rpc-file", "--no-auto-pockets"]
env = { "SHIELDED_WALLET_HOME" = "${SHIELDED_WALLET_HOME}", "SHIELDED_WALLET_PASSPHRASE" = "${SHIELDED_WALLET_PASSPHRASE}" }

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "shinjuku-mcp": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "[email protected]",
        "mcp",
        "--max-payment",
        "--max-session",
        "--pool",
        "CDtxyRjCUs2pu7t3U9TwtpnZwyxBFZ4dKXvb4RCmXHXv",
        "--program",
        "8PYPw3FSFTMbvSneXdcoH6jNoN4VD23nHwPY2A2riUy1",
        "--memo-service",
        "https://pay.shinjukustaition.com",
        "--passphrase-file",
        "--proof-tools",
        "--exit-proof-tools",
        "--profile",
        "--unshield-to",
        "--max-unshield",
        "--max-shield",
        "--max-per-host-day",
        "--allow-host",
        "--rpc-file",
        "--no-auto-pockets"
      ],
      "enabled": true,
      "environment": {
        "SHIELDED_WALLET_HOME": "{env:SHIELDED_WALLET_HOME}",
        "SHIELDED_WALLET_PASSPHRASE": "{env:SHIELDED_WALLET_PASSPHRASE}"
      }
    }
  }
}

{
  "mcpServers": {
    "shinjuku-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]",
        "mcp",
        "--max-payment",
        "--max-session",
        "--pool",
        "CDtxyRjCUs2pu7t3U9TwtpnZwyxBFZ4dKXvb4RCmXHXv",
        "--program",
        "8PYPw3FSFTMbvSneXdcoH6jNoN4VD23nHwPY2A2riUy1",
        "--memo-service",
        "https://pay.shinjukustaition.com",
        "--passphrase-file",
        "--proof-tools",
        "--exit-proof-tools",
        "--profile",
        "--unshield-to",
        "--max-unshield",
        "--max-shield",
        "--max-per-host-day",
        "--allow-host",
        "--rpc-file",
        "--no-auto-pockets"
      ],
      "env": {
        "SHIELDED_WALLET_HOME": "${SHIELDED_WALLET_HOME}",
        "SHIELDED_WALLET_PASSPHRASE": "${SHIELDED_WALLET_PASSPHRASE}"
      }
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=shinjuku-mcp&config=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"
}

{
  "servers": {
    "shinjuku-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "[email protected]",
        "mcp",
        "--max-payment",
        "--max-session",
        "--pool",
        "CDtxyRjCUs2pu7t3U9TwtpnZwyxBFZ4dKXvb4RCmXHXv",
        "--program",
        "8PYPw3FSFTMbvSneXdcoH6jNoN4VD23nHwPY2A2riUy1",
        "--memo-service",
        "https://pay.shinjukustaition.com",
        "--passphrase-file",
        "--proof-tools",
        "--exit-proof-tools",
        "--profile",
        "--unshield-to",
        "--max-unshield",
        "--max-shield",
        "--max-per-host-day",
        "--allow-host",
        "--rpc-file",
        "--no-auto-pockets"
      ],
      "env": {
        "SHIELDED_WALLET_HOME": "${SHIELDED_WALLET_HOME}",
        "SHIELDED_WALLET_PASSPHRASE": "${SHIELDED_WALLET_PASSPHRASE}"
      }
    }
  }
}

{
  "mcpServers": {
    "shinjuku-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]",
        "mcp",
        "--max-payment",
        "--max-session",
        "--pool",
        "CDtxyRjCUs2pu7t3U9TwtpnZwyxBFZ4dKXvb4RCmXHXv",
        "--program",
        "8PYPw3FSFTMbvSneXdcoH6jNoN4VD23nHwPY2A2riUy1",
        "--memo-service",
        "https://pay.shinjukustaition.com",
        "--passphrase-file",
        "--proof-tools",
        "--exit-proof-tools",
        "--profile",
        "--unshield-to",
        "--max-unshield",
        "--max-shield",
        "--max-per-host-day",
        "--allow-host",
        "--rpc-file",
        "--no-auto-pockets"
      ],
      "env": {
        "SHIELDED_WALLET_HOME": "${SHIELDED_WALLET_HOME}",
        "SHIELDED_WALLET_PASSPHRASE": "${SHIELDED_WALLET_PASSPHRASE}"
      }
    }
  }
}

extensions:
  "shinjuku-mcp":
    enabled: true
    name: "shinjuku-mcp"
    type: stdio
    cmd: "npx"
    args:
      - "-y"
      - "[email protected]"
      - "mcp"
      - "--max-payment"
      - "--max-session"
      - "--pool"
      - "CDtxyRjCUs2pu7t3U9TwtpnZwyxBFZ4dKXvb4RCmXHXv"
      - "--program"
      - "8PYPw3FSFTMbvSneXdcoH6jNoN4VD23nHwPY2A2riUy1"
      - "--memo-service"
      - "https://pay.shinjukustaition.com"
      - "--passphrase-file"
      - "--proof-tools"
      - "--exit-proof-tools"
      - "--profile"
      - "--unshield-to"
      - "--max-unshield"
      - "--max-shield"
      - "--max-per-host-day"
      - "--allow-host"
      - "--rpc-file"
      - "--no-auto-pockets"
    envs:
      "SHIELDED_WALLET_HOME": "${SHIELDED_WALLET_HOME}"
      "SHIELDED_WALLET_PASSPHRASE": "${SHIELDED_WALLET_PASSPHRASE}"
    timeout: 300

Placeholders to fill from your own secret store: ${SHIELDED_WALLET_PASSPHRASE}. The registry never accepts secret values.

This is a local package: the command runs on your machine.

Quality – / 100not scored

Not scored: fewer than three checks apply, usually because no remote answered a credential-free probe or the server is a local package.

protocoln/a · weight 25

n/a
protocol.modern, protocol.stateless, protocol.transport, protocol.list_ttlno remote answered a protocol handshake (not probed yet, unreachable, or local-only)

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 hygienen/a · weight 30

n/a
tools.descriptions, tools.description_length, tools.schemas, tools.annotations, tools.directory_hints, tools.token_cost, tools.api_dumptool list unknown (behind auth, not probed, or empty)

stabilityn/a · weight 15

n/a
stability.changes, stability.rug_pulltool list unknown

dependenciesn/a · weight 15

n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvabledeps.dev does not know [email protected]

Tool list unknown · checked 2026-10-19 10:52 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 89 / 100

multi-version-spam

provenance90

livenessn/a

freshness100

hygiene75

+repository +namespace-matches-repo +website ~liveness-unmeasured +updated-0d-ago -multi-version-spam(48)

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

Dependencies

[email protected] npmthis version is not known to the dependency resolver

Dependency graphs from deps.dev; advisories from OSV.dev, including the GitHub Advisory Database and the PyPI Advisory Database; all CC BY 4.0. The graph is what a clean install of this version resolves today; nothing was installed or run. How it is checked.

Endpoints

package	registry	version	runtime	secrets
`shinjuku-shielded`	npm	0.3.52	npx	`SHIELDED_WALLET_PASSPHRASE`

Tools (0)

No tools observed. Local packages are never executed by the registry.

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "io.github.ShinjukuStaition/shinjuku-mcp",
  "title": "Shinjuku Shielded",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "version": "0.3.52",
  "packages": [
    {
      "version": "0.3.52",
      "transport": {
        "type": "stdio"
      },
      "identifier": "shinjuku-shielded",
      "runtimeHint": "npx",
      "registryType": "npm",
      "registryBaseUrl": "https://registry.npmjs.org",
      "packageArguments": [
        {
          "type": "positional",
          "value": "mcp",
          "valueHint": "command",
          "description": "The wallet command that runs the MCP server on stdio."
        },
        {
          "name": "--max-payment",
          "type": "named",
          "format": "number",
          "description": "The most one payment may cost, in atomic USDC (50000 = 0.05 USDC). Optional (default: no limit); setup writes the caps you set to config.json.",
          "placeholder": "50000"
        },
        {
          "name": "--max-session",
          "type": "named",
          "format": "number",
          "description": "The most this server process may pay in total, in atomic USDC. Optional (default: no limit); setup writes the caps you set to config.json.",
          "placeholder": "200000"
        },
        {
          "name": "--pool",
          "type": "named",
          "default": "CDtxyRjCUs2pu7t3U9TwtpnZwyxBFZ4dKXvb4RCmXHXv",
          "description": "The shielded pool. The wallet file is $SHIELDED_WALLET_HOME/<pool>/wallet.json."
        },
        {
          "name": "--program",
          "type": "named",
          "default": "8PYPw3FSFTMbvSneXdcoH6jNoN4VD23nHwPY2A2riUy1",
          "description": "The shielded pool program."
        },
        {
          "name": "--memo-service",
          "type": "named",
          "default": "https://pay.shinjukustaition.com",
          "description": "The facilitator that serves the encrypted memos. Its RPC relay serves reads without --rpc-file."
        },
        {
          "name": "--passphrase-file",
          "type": "named",
          "format": "filepath",
          "description": "Absolute path of a private file that holds the wallet passphrase. Without it, SHIELDED_WALLET_PASSPHRASE."
        },
        {
          "name": "--proof-tools",
          "type": "named",
          "format": "filepath",
          "description": "Absolute path of proof-tools.json. Turns wallet_shield on and is needed to pay shielded-exact."
        },
        {
          "name": "--exit-proof-tools",
          "type": "named",
          "format": "filepath",
          "description": "Absolute path of exit-proof-tools.json. With --profile and --proof-tools, turns wallet_unshield on."
        },
        {
          "name": "--profile",
          "type": "named",
          "format": "filepath",
          "description": "Absolute path of public-profile.json (the facilitator's public profile). Needed for wallet_unshield."
        },
        {
          "name": "--unshield-to",
          "type": "named",
          "isRepeated": true,
          "description": "A public Solana address that wallet_unshield sends to with no confirmation. Never the wallet's own key."
        },
        {
          "name": "--max-unshield",
          "type": "named",
          "format": "number",
          "description": "The most one wallet_unshield call, and this process in total, may send, in atomic USDC."
        },
        {
          "name": "--max-shield",
          "type": "named",
          "format": "number",
          "description": "The most one wallet_shield call, and this process in total, may move, in atomic USDC."
        },
        {
          "name": "--max-per-host-day",
          "type": "named",
          "format": "number",
          "description": "The most one seller host may receive in 24 hours, in atomic USDC."
        },
        {
          "name": "--allow-host",
          "type": "named",
          "isRepeated": true,
          "description": "Pay only this seller host (host or host:port)."
        },
        {
          "name": "--rpc-file",
          "type": "named",
          "format": "filepath",
          "description": "Absolute path of a private file with your own Solana RPC URL. Without it, reads go to the facilitator relay."
        },
        {
          "name": "--no-auto-pockets",
          "type": "named",
          "description": "Stop the idle return of pockets that an older version filled to the shielded balance. Standard exact sellers are paid through Shinjuku (float pay); no pocket is filled."
        }
      ],
      "environmentVariables": [
        {
          "name": "SHIELDED_WALLET_HOME",
          "format": "filepath",
          "isRequired": true,
          "description": "The private folder that holds the encrypted wallet (the folder that init used)."
        },
        {
          "name": "SHIELDED_WALLET_PASSPHRASE",
          "isSecret": true,
          "description": "The wallet passphrase, if you do not use --passphrase-file."
        }
      ]
    }
  ],
  "repository": {
    "url": "https://github.com/ShinjukuStaition/shinjuku-mcp",
    "source": "github"
  },
  "websiteUrl": "https://shinjukustaition.com",
  "description": "Private x402 payments on Solana: shield, pay, and unshield USDC under caps you set."
}