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8 clients · secrets stay placeholders

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{
  "mcpServers": {
    "x402-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "X402_PRIVATE_KEY": "${X402_PRIVATE_KEY}"
      }
    }
  }
}

claude mcp add x402-mcp -e "X402_PRIVATE_KEY=${X402_PRIVATE_KEY}" -- npx -y [email protected]

[mcp_servers.x402-mcp]
command = "npx"
args = ["-y", "[email protected]"]
env = { "X402_PRIVATE_KEY" = "${X402_PRIVATE_KEY}" }

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "x402-mcp": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "[email protected]"
      ],
      "enabled": true,
      "environment": {
        "X402_PRIVATE_KEY": "{env:X402_PRIVATE_KEY}"
      }
    }
  }
}

{
  "mcpServers": {
    "x402-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "X402_PRIVATE_KEY": "${X402_PRIVATE_KEY}"
      }
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=x402-mcp&config=eyJjb21tYW5kIjoibnB4IiwiYXJncyI6WyIteSIsIng0MDJub2RlLW1jcEAxLjAuNCJdLCJlbnYiOnsiWDQwMl9QUklWQVRFX0tFWSI6IiR7WDQwMl9QUklWQVRFX0tFWX0ifX0%3D"
}

{
  "servers": {
    "x402-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "X402_PRIVATE_KEY": "${X402_PRIVATE_KEY}"
      }
    }
  }
}

{
  "mcpServers": {
    "x402-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "X402_PRIVATE_KEY": "${X402_PRIVATE_KEY}"
      }
    }
  }
}

extensions:
  "x402-mcp":
    enabled: true
    name: "x402-mcp"
    type: stdio
    cmd: "npx"
    args:
      - "-y"
      - "[email protected]"
    envs:
      "X402_PRIVATE_KEY": "${X402_PRIVATE_KEY}"
    timeout: 300

Placeholders to fill from your own secret store: ${X402_PRIVATE_KEY}. 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

dependencies33 · weight 15

fail
deps.known_vulns1 advisory to act on (malicious, or rated high or critical with a fix available): GHSA-96hv-2xvq-fx4p in [email protected] (indirect, fixed in 8.21.0); 4 more of lower severity or without a fix
fail
deps.mcp_sdk_version@modelcontextprotocol/sdk 1.30.1 has 1 known advisory (GHSA-6qxp-vccf-f47h); update @modelcontextprotocol/sdk to 1.31.0 or later
pass
deps.resolvable[email protected] resolved: 544 packages

Tool list unknown · checked 2026-10-19 10:20 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 81 / 100

provenance80

livenessn/a

freshness65

hygiene100

+repository +namespace-matches-repo ~liveness-unmeasured ~updated-93d-ago

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

Dependencies

[email protected] npm543 dependencies, resolved · MCP SDK @modelcontextprotocol/sdk 1.30.1 · advisories checked 2026-10-19

advisory	severity	package	fixed in
GHSA-6qxp-vccf-f47hMCP TypeScript SDK: OAuth client could send credentials to an authorization server chosen by the MCP server	high	`@modelcontextprotocol/[email protected]`MCP SDK, direct	fixed in `1.31.0`
GHSA-96hv-2xvq-fx4pws: Memory exhaustion DoS from tiny fragments and data chunks	high	`[email protected]`indirect	fixed in `8.21.0`
GHSA-vcc3-ghjq-m6frdecode-uri-component: Denial of service via exponential decoding of malformed percent-encoded input	moderate	`[email protected]`indirect	fixed in `0.5.0`
GHSA-w5hq-g745-h8pquuid: Missing buffer bounds check in v3/v5/v6 when buf is provided	moderate	`[email protected]`indirect	fixed in `11.1.1`
GHSA-w5hq-g745-h8pquuid: Missing buffer bounds check in v3/v5/v6 when buf is provided	moderate	`[email protected]`indirect	fixed in `11.1.1`
GHSA-58qx-3vcg-4xpxws: Uninitialized memory disclosure	moderate	`[email protected]`indirect	fixed in `8.20.1`

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
`x402node-mcp`	npm	1.0.4	–	`X402_PRIVATE_KEY`

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.x402node/x402-mcp",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "version": "1.0.4",
  "packages": [
    {
      "version": "1.0.4",
      "transport": {
        "type": "stdio"
      },
      "identifier": "x402node-mcp",
      "registryType": "npm",
      "environmentVariables": [
        {
          "name": "X402_PRIVATE_KEY",
          "format": "string",
          "isSecret": true,
          "isRequired": true,
          "description": "Base EOA private key (hex, 0x-prefixed) with USDC for signing x402 payments"
        }
      ]
    }
  ],
  "repository": {
    "url": "https://github.com/x402node/x402-mcp",
    "source": "github"
  },
  "description": "Hundreds of x402-paid APIs as MCP tools, auto-discovered from Coinbase Bazaar. USDC on Base+Solana."
}