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8 clients · secrets stay placeholders

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{
  "mcpServers": {
    "mcp-guardian": {
      "command": "npx",
      "args": [
        "-y",
        "@mcp-guardian/[email protected]"
      ],
      "env": {
        "MCP_GUARDIAN_DB_PATH": "~/.mcp-guardian/history.db",
        "ALERT_WEBHOOK_URL": "${ALERT_WEBHOOK_URL}"
      }
    }
  }
}

claude mcp add mcp-guardian -e "MCP_GUARDIAN_DB_PATH=~/.mcp-guardian/history.db" -e "ALERT_WEBHOOK_URL=${ALERT_WEBHOOK_URL}" -- npx -y @mcp-guardian/[email protected]

[mcp_servers.mcp-guardian]
command = "npx"
args = ["-y", "@mcp-guardian/[email protected]"]
env = { "MCP_GUARDIAN_DB_PATH" = "~/.mcp-guardian/history.db", "ALERT_WEBHOOK_URL" = "${ALERT_WEBHOOK_URL}" }

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "mcp-guardian": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@mcp-guardian/[email protected]"
      ],
      "enabled": true,
      "environment": {
        "MCP_GUARDIAN_DB_PATH": "~/.mcp-guardian/history.db",
        "ALERT_WEBHOOK_URL": "{env:ALERT_WEBHOOK_URL}"
      }
    }
  }
}

{
  "mcpServers": {
    "mcp-guardian": {
      "command": "npx",
      "args": [
        "-y",
        "@mcp-guardian/[email protected]"
      ],
      "env": {
        "MCP_GUARDIAN_DB_PATH": "~/.mcp-guardian/history.db",
        "ALERT_WEBHOOK_URL": "${ALERT_WEBHOOK_URL}"
      }
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=mcp-guardian&config=eyJjb21tYW5kIjoibnB4IiwiYXJncyI6WyIteSIsIkBtY3AtZ3VhcmRpYW4vc2VydmVyQDIuMy4yMSJdLCJlbnYiOnsiTUNQX0dVQVJESUFOX0RCX1BBVEgiOiJ%2BLy5tY3AtZ3VhcmRpYW4vaGlzdG9yeS5kYiIsIkFMRVJUX1dFQkhPT0tfVVJMIjoiJHtBTEVSVF9XRUJIT09LX1VSTH0ifX0%3D"
}

{
  "servers": {
    "mcp-guardian": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@mcp-guardian/[email protected]"
      ],
      "env": {
        "MCP_GUARDIAN_DB_PATH": "~/.mcp-guardian/history.db",
        "ALERT_WEBHOOK_URL": "${ALERT_WEBHOOK_URL}"
      }
    }
  }
}

{
  "mcpServers": {
    "mcp-guardian": {
      "command": "npx",
      "args": [
        "-y",
        "@mcp-guardian/[email protected]"
      ],
      "env": {
        "MCP_GUARDIAN_DB_PATH": "~/.mcp-guardian/history.db",
        "ALERT_WEBHOOK_URL": "${ALERT_WEBHOOK_URL}"
      }
    }
  }
}

extensions:
  "mcp-guardian":
    enabled: true
    name: "mcp-guardian"
    type: stdio
    cmd: "npx"
    args:
      - "-y"
      - "@mcp-guardian/[email protected]"
    envs:
      "MCP_GUARDIAN_DB_PATH": "~/.mcp-guardian/history.db"
      "ALERT_WEBHOOK_URL": "${ALERT_WEBHOOK_URL}"
    timeout: 300

Placeholders to fill from your own secret store: ${ALERT_WEBHOOK_URL}. 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_vulns7 advisories to act on (malicious, or rated high or critical with a fix available): GHSA-45rx-2jwx-cxfr in @opentelemetry/[email protected] (indirect, fixed in 2.9.0), GHSA-66ff-xgx4-vchm in [email protected] (indirect, fixed in 8.0.2), GHSA-685m-2w69-288q in [email protected] (indirect, fixed in 8.0.2), ...; 15 more of lower severity or without a fix
fail
deps.mcp_sdk_version@modelcontextprotocol/sdk 1.0.4 has 1 known advisory (GHSA-w48q-cv73-mx4w); update @modelcontextprotocol/sdk to 1.24.0 or later
pass
deps.resolvable@mcp-guardian/[email protected] resolved: 434 packages

Tool list unknown · checked 2026-10-20 18:38 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-159d-ago

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

Dependencies

@mcp-guardian/[email protected] npm433 dependencies, resolved · MCP SDK @modelcontextprotocol/sdk 1.0.4 · advisories checked 2026-10-19

advisory	severity	package	fixed in
GHSA-pqg4-j6r4-53mvshell-quote: `quote()` command injection via a line terminator in a token after a `{ comment }` token	critical	`[email protected]`direct	fixed in `1.11.0`
GHSA-w48q-cv73-mx4wModel Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default	high	`@modelcontextprotocol/[email protected]`MCP SDK, direct	fixed in `1.24.0`
GHSA-45rx-2jwx-cxfrOpenTelemetry JavaScript: Denial of service in `JaegerPropagator` via unhandled exception on a malformed header	high	`@opentelemetry/[email protected]`indirect	fixed in `2.9.0`
GHSA-66ff-xgx4-vchmprotobuf.js: Code injection through bytes field defaults in generated toObject code	high	`[email protected]`indirect	fixed in `8.0.2`
GHSA-685m-2w69-288qprotobuf.js: Denial of service through unbounded protobuf recursion	high	`[email protected]`indirect	fixed in `8.0.2`
GHSA-75px-5xx7-5xc7protobuf.js: Code generation gadget after prototype pollution	high	`[email protected]`indirect	fixed in `8.0.2`
GHSA-jvwf-75h9-cwggprotobuf.js: Process-wide denial of service through unsafe option paths	high	`[email protected]`indirect	fixed in `8.0.2`
GHSA-wcpc-wj8m-hjx6protobufjs: Denial of service through unbounded Any expansion during JSON conversion	high	`[email protected]`indirect	fixed in `8.4.1`
GHSA-8988-4f7v-96qfOpenTelemetry Core: Unbounded memory allocation in W3C Baggage propagation	moderate	`@opentelemetry/[email protected]`indirect	fixed in `2.8.0`
GHSA-qqmp-wf37-98f9Multiple @opentelemetry/instrumentation-* packages expose database username via unconditional db.user span attribute	moderate	`@opentelemetry/[email protected]`indirect	fixed in `0.66.0`

13 more advisories in the dependencies endpoint.

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
`@mcp-guardian/server`	npm	2.3.21	–	`ALERT_WEBHOOK_URL`

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.rudraneel93/mcp-guardian",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "version": "2.3.21",
  "packages": [
    {
      "version": "2.3.21",
      "transport": {
        "type": "stdio"
      },
      "identifier": "@mcp-guardian/server",
      "registryType": "npm",
      "environmentVariables": [
        {
          "name": "MCP_GUARDIAN_DB_PATH",
          "format": "string",
          "default": "~/.mcp-guardian/history.db",
          "description": "Path to SQLite history database"
        },
        {
          "name": "ALERT_WEBHOOK_URL",
          "format": "string",
          "isSecret": true,
          "description": "Slack or Discord webhook for critical alerts"
        },
        {
          "name": "METRICS_ENABLED",
          "format": "string",
          "description": "Expose Prometheus metrics"
        }
      ]
    }
  ],
  "repository": {
    "url": "https://github.com/rudraneel93/mcp-guardian",
    "source": "github"
  },
  "description": "Security, cost, and health governance proxy for MCP infrastructure"
}