Connect

8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "cards": {
      "type": "http",
      "url": "https://stampcard.rowb.app/mcp",
      "headers": {
        "Authorization": "Bearer ${CARDS_TOKEN}"
      }
    }
  }
}

claude mcp add --transport http cards https://stampcard.rowb.app/mcp --header "Authorization: Bearer ${CARDS_TOKEN}"

[mcp_servers.cards]
url = "https://stampcard.rowb.app/mcp"
bearer_token_env_var = "CARDS_TOKEN"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "cards": {
      "type": "remote",
      "url": "https://stampcard.rowb.app/mcp",
      "enabled": true,
      "headers": {
        "Authorization": "Bearer {env:CARDS_TOKEN}"
      }
    }
  }
}

{
  "mcpServers": {
    "cards": {
      "type": "http",
      "url": "https://stampcard.rowb.app/mcp",
      "headers": {
        "Authorization": "Bearer ${CARDS_TOKEN}"
      }
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=cards&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vc3RhbXBjYXJkLnJvd2IuYXBwL21jcCIsImhlYWRlcnMiOnsiQXV0aG9yaXphdGlvbiI6IkJlYXJlciAke0NBUkRTX1RPS0VOfSJ9fQ%3D%3D"
}

{
  "servers": {
    "cards": {
      "type": "http",
      "url": "https://stampcard.rowb.app/mcp",
      "headers": {
        "Authorization": "Bearer ${CARDS_TOKEN}"
      }
    }
  }
}

{
  "mcpServers": {
    "cards": {
      "httpUrl": "https://stampcard.rowb.app/mcp",
      "headers": {
        "Authorization": "Bearer ${CARDS_TOKEN}"
      }
    }
  }
}

extensions:
  "cards":
    enabled: true
    name: "cards"
    type: streamable_http
    uri: "https://stampcard.rowb.app/mcp"
    headers:
      "Authorization": "Bearer ${CARDS_TOKEN}"
    timeout: 300

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

Quality 79 / 100good

protocol75 · weight 25

warn
protocol.modernnewest supported version is 2025-06-18; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
n/a
protocol.statelessonly applies to 2026-07-28 servers
pass
protocol.transportstreamable HTTP
n/a
protocol.list_ttlonly applies to 2026-07-28 servers

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 hygiene71 · weight 30

pass
tools.descriptionsevery tool has a description
pass
tools.description_lengthdescriptions are concise
pass
tools.schemasevery tool has an object input schema
fail
tools.annotationsno tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
fail
tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: redeem (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); program_stats (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); stamp (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …
pass
tools.token_costabout 299 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stability100 · weight 15

pass
stability.changesno tool changes in 30 days
pass
stability.rug_pullno tool changed its meaning under the same name

dependenciesn/a · weight 15

n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

5 tools, about 299 tokens to load them all · tool set 97631a075f2c · checked 2026-10-19 10:52 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 82 / 100

no-repository

provenance55

liveness98

freshness100

hygiene80

+dns-namespace +website +reachable +uptime-96% +updated-26d-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://stampcard.rowb.app/mcp` streamable-http	none	yes	96%	581 ms	2025-06-18	2026-10-19

Tools (5)

`create_program`	Create or update the shop program: shop name, reward text, stamps required before a reward. Returns the program and its join URL (the poster target).
`get_card`	Read one customer card: how many stamps, what the reward is, whether it is ready to redeem.
`program_stats`	Program plus this month stamp usage and quota, so a shop can tell how close it is to the free limit.
`redeem`	Redeem the reward on a card that has reached its required stamps. Resets the stamp count and increments the rewards-earned counter.
`stamp`	Add one stamp to a customer card. Identify the card by its 8-character code (from the customer page) or by its token. One stamp per card per day unless allow_multiple is true.

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "app.rowb.stampcard/cards",
  "title": "Stampcard — digital stamp cards for small shops, no app for the customer",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://stampcard.rowb.app/mcp",
      "type": "streamable-http",
      "headers": [
        {
          "name": "Authorization",
          "isSecret": true,
          "description": "Bearer shop API key from /signup. Free tier stamps from a phone without a key; the key is needed to call these tools."
        }
      ]
    }
  ],
  "version": "1.0.0",
  "websiteUrl": "https://stampcard.rowb.app",
  "description": "Create a shop program, hand customers a browser stamp card by QR poster, stamp it from a phone."
}