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8 clients · secrets stay placeholders

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{
  "mcpServers": {
    "secondhand-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "EBAY_CLIENT_ID": "${EBAY_CLIENT_ID}",
        "EBAY_CLIENT_SECRET": "${EBAY_CLIENT_SECRET}"
      }
    }
  }
}

claude mcp add secondhand-mcp -e "EBAY_CLIENT_ID=${EBAY_CLIENT_ID}" -e "EBAY_CLIENT_SECRET=${EBAY_CLIENT_SECRET}" -- npx -y [email protected]

[mcp_servers.secondhand-mcp]
command = "npx"
args = ["-y", "[email protected]"]
env = { "EBAY_CLIENT_ID" = "${EBAY_CLIENT_ID}", "EBAY_CLIENT_SECRET" = "${EBAY_CLIENT_SECRET}" }

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

{
  "mcpServers": {
    "secondhand-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "EBAY_CLIENT_ID": "${EBAY_CLIENT_ID}",
        "EBAY_CLIENT_SECRET": "${EBAY_CLIENT_SECRET}"
      }
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=secondhand-mcp&config=eyJjb21tYW5kIjoibnB4IiwiYXJncyI6WyIteSIsInNlY29uZGhhbmQtbWNwQDAuNi4wIl0sImVudiI6eyJFQkFZX0NMSUVOVF9JRCI6IiR7RUJBWV9DTElFTlRfSUR9IiwiRUJBWV9DTElFTlRfU0VDUkVUIjoiJHtFQkFZX0NMSUVOVF9TRUNSRVR9In19"
}

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

{
  "mcpServers": {
    "secondhand-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "EBAY_CLIENT_ID": "${EBAY_CLIENT_ID}",
        "EBAY_CLIENT_SECRET": "${EBAY_CLIENT_SECRET}"
      }
    }
  }
}

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

Placeholders to fill from your own secret store: ${EBAY_CLIENT_ID}, ${EBAY_CLIENT_SECRET}. 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-c475-qrg2-pj4r in [email protected] (indirect, fixed in 6.2.1); 2 more of lower severity or without a fix
fail
deps.mcp_sdk_version@modelcontextprotocol/sdk 1.5.0 has 2 known advisories (GHSA-8r9q-7v3j-jr4g, GHSA-w48q-cv73-mx4w); update @modelcontextprotocol/sdk to 1.25.2 or later
pass
deps.resolvable[email protected] resolved: 140 packages

Tool list unknown · checked 2026-10-20 04:09 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 91 / 100

provenance90

livenessn/a

freshness85

hygiene100

+repository +namespace-matches-repo +website ~liveness-unmeasured ~updated-49d-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] npm139 dependencies, resolved · MCP SDK @modelcontextprotocol/sdk 1.5.0 · advisories checked 2026-10-19

advisory	severity	package	fixed in
GHSA-8r9q-7v3j-jr4gAnthropic's MCP TypeScript SDK has a ReDoS vulnerability	high	`@modelcontextprotocol/[email protected]`MCP SDK, direct	fixed in `1.25.2`
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-c475-qrg2-pj4rbasic-ftp: Quadratic-time CPU denial of service in Client.list() Unix directory-listing parser (RE_LINE backtracking)	high	`[email protected]`indirect	fixed in `6.2.1`
GHSA-7pqw-9j4j-h8q3extract-zip allows arbitrary file writes through symlink archive entries	high	`[email protected]`indirect	no fix yet
GHSA-jmr9-qjv8-65gvextract-zip unvalidated symlink path traversal	high	`[email protected]`indirect	no fix yet

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
`secondhand-mcp`	npm	0.6.0	–	`EBAY_CLIENT_ID`, `EBAY_CLIENT_SECRET`

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.jlsookiki/secondhand-mcp",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-09-29/server.schema.json",
  "version": "0.6.0",
  "packages": [
    {
      "version": "0.6.0",
      "transport": {
        "type": "stdio"
      },
      "identifier": "secondhand-mcp",
      "registryType": "npm",
      "registryBaseUrl": "https://registry.npmjs.org",
      "environmentVariables": [
        {
          "name": "EBAY_CLIENT_ID",
          "isSecret": true,
          "description": "eBay API client ID (only needed for eBay search)"
        },
        {
          "name": "EBAY_CLIENT_SECRET",
          "isSecret": true,
          "description": "eBay API client secret (only needed for eBay search)"
        },
        {
          "name": "EBAY_MARKETPLACE_ID",
          "description": "eBay regional marketplace, e.g. EBAY_US (default)"
        }
      ]
    }
  ],
  "repository": {
    "url": "https://github.com/jlsookiki/secondhand-mcp",
    "source": "github"
  },
  "websiteUrl": "https://secondhandmcp.com",
  "description": "Search Facebook Marketplace, eBay, Depop, and Poshmark from AI — filters, photos, full listings."
}