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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "calculator": {
      "type": "http",
      "url": "https://api.calculator.tools/mcp/",
      "headers": {
        "Authorization": "Bearer ${CALCULATOR_TOKEN}"
      }
    }
  }
}

claude mcp add --transport http calculator https://api.calculator.tools/mcp/ --header "Authorization: Bearer ${CALCULATOR_TOKEN}"

[mcp_servers.calculator]
url = "https://api.calculator.tools/mcp/"
bearer_token_env_var = "CALCULATOR_TOKEN"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "calculator": {
      "type": "remote",
      "url": "https://api.calculator.tools/mcp/",
      "enabled": true,
      "headers": {
        "Authorization": "Bearer {env:CALCULATOR_TOKEN}"
      }
    }
  }
}

{
  "mcpServers": {
    "calculator": {
      "type": "http",
      "url": "https://api.calculator.tools/mcp/",
      "headers": {
        "Authorization": "Bearer ${CALCULATOR_TOKEN}"
      }
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=calculator&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vYXBpLmNhbGN1bGF0b3IudG9vbHMvbWNwLyIsImhlYWRlcnMiOnsiQXV0aG9yaXphdGlvbiI6IkJlYXJlciAke0NBTENVTEFUT1JfVE9LRU59In19"
}

{
  "servers": {
    "calculator": {
      "type": "http",
      "url": "https://api.calculator.tools/mcp/",
      "headers": {
        "Authorization": "Bearer ${CALCULATOR_TOKEN}"
      }
    }
  }
}

{
  "mcpServers": {
    "calculator": {
      "httpUrl": "https://api.calculator.tools/mcp/",
      "headers": {
        "Authorization": "Bearer ${CALCULATOR_TOKEN}"
      }
    }
  }
}

extensions:
  "calculator":
    enabled: true
    name: "calculator"
    type: streamable_http
    uri: "https://api.calculator.tools/mcp/"
    headers:
      "Authorization": "Bearer ${CALCULATOR_TOKEN}"
    timeout: 300

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

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.resolvableno npm or PyPI package

Tool list unknown · checked 2026-10-19 20:06 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 79 / 100

no-repository

provenance55

liveness99

freshness85

hygiene80

+dns-namespace +website +reachable +uptime-98% ~updated-60d-ago -no-repository

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

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://api.calculator.tools/mcp/` streamable-http	api_key `${CALCULATOR_TOKEN}`	yes	98%	444 ms	–	2026-10-19

Tools (0)

No tools observed. Tools appear once a credential-free probe can list them.

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "tools.calculator/mcp",
  "icons": [
    {
      "src": "https://calculator.tools/images/favicon-192x192.png",
      "sizes": [
        "192x192"
      ],
      "mimeType": "image/png"
    }
  ],
  "title": "Calculator Tools MCP",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://api.calculator.tools/mcp/",
      "type": "streamable-http"
    }
  ],
  "version": "1.0.1",
  "websiteUrl": "https://calculator.tools/mcp/",
  "description": "Publish a live calculator, tracker, tool, or game from Cursor, Claude, or ChatGPT."
}