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8 clients · secrets stay placeholders

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

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

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

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

{
  "mcpServers": {
    "mcp-ecc": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "MCP_ENCRYPTION_KEY": "${MCP_ENCRYPTION_KEY}"
      }
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=mcp-ecc&config=eyJjb21tYW5kIjoibnB4IiwiYXJncyI6WyIteSIsIm1jcC1lY2NAMC42LjAiXSwiZW52Ijp7Ik1DUF9FTkNSWVBUSU9OX0tFWSI6IiR7TUNQX0VOQ1JZUFRJT05fS0VZfSJ9fQ%3D%3D"
}

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

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

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

Placeholders to fill from your own secret store: ${MCP_ENCRYPTION_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_vulns2 advisories to act on (malicious, or rated high or critical with a fix available): GHSA-prgh-xp8r-p3m5 in [email protected] (indirect, fixed in 10.0.5), GHSA-v53p-9fqp-m79j in [email protected] (indirect, fixed in 10.0.6); 3 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: 264 packages

Tool list unknown · checked 2026-10-20 11:08 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 87 / 100

provenance80

livenessn/a

freshness85

hygiene100

+repository +namespace-matches-repo ~liveness-unmeasured ~updated-40d-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] npm263 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, indirect	fixed in `1.31.0`
GHSA-prgh-xp8r-p3m5Nodemailer addressparser: O(n^2) on comment-joined addresses enables a remote DoS (reachable via mailparser)	high	`[email protected]`indirect	fixed in `10.0.5`
GHSA-v53p-9fqp-m79jNodemailer: Quadratic backtracking in the addressparser free-text fallback allows remote denial of service	high	`[email protected]`indirect	fixed in `10.0.6`
GHSA-6vj9-mwq6-2f5vNodemailer: Process-global DNS cache reuses TLS `servername` across transports, enabling cross-tenant SMTP credential disclosure	moderate	`[email protected]`indirect	fixed in `10.0.2`
GHSA-8vvx-rff5-p5rqNodemailer: Nested structured recipient arrays bypass the parser depth limit and cause stack exhaustion DoS	moderate	`[email protected]`indirect	fixed in `10.0.2`
GHSA-g57g-f23g-4646Nodemailer: Quoted local-part can produce malformed envelope recipient through RFC 5322 comment parsing	moderate	`[email protected]`indirect	fixed in `10.0.9`

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-ecc`	npm	0.6.0	–	`MCP_ENCRYPTION_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.karljsamuel/mcp-ecc",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "version": "0.6.0",
  "packages": [
    {
      "version": "0.6.0",
      "transport": {
        "type": "stdio"
      },
      "identifier": "mcp-ecc",
      "registryType": "npm",
      "environmentVariables": [
        {
          "name": "MCP_ENCRYPTION_KEY",
          "format": "string",
          "isSecret": true,
          "isRequired": true,
          "description": "Master key used to encrypt stored credentials (AES-256-GCM). Generate with: openssl rand -hex 32"
        }
      ]
    }
  ],
  "repository": {
    "url": "https://github.com/karljsamuel/mcp-ecc",
    "source": "github"
  },
  "description": "Unified MCP server for Email, Calendar & Contacts (Google, M365, Zoho, IMAP/SMTP, DAV)."
}