# Stampcard — digital stamp cards for small shops, no app for the customer (remote · stampcard.rowb.app)

Create a shop program, hand customers a browser stamp card by QR poster, stamp it from a phone.

- Trust score: 58/100 (low)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-01

## Components

- remote · `stampcard.rowb.app`: 58/100 (this document), [markdown](https://verifymcp.io/servers/app-rowb-stampcard-cards/stampcard.md), [page](https://verifymcp.io/servers/app-rowb-stampcard-cards/stampcard)

## Channel facts

- Endpoint: `https://stampcard.rowb.app/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-10-01.

- **Endpoint Security**: 46/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 5 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS enforcement could not be verified: the plaintext port answered with HTTP 405, which proves neither a plaintext path nor enforcement.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 69/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 251 tokens (~50/item across 5 items; 5 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 23/100
  - Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 67/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 0% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 5 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

## Install

### How do I install the Stampcard — digital stamp cards for small shops, no app… MCP server?

Stampcard — digital stamp cards for small shops, no app… is a hosted endpoint at https://stampcard.rowb.app/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http app-rowb-stampcard-cards 'https://stampcard.rowb.app/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "app-rowb-stampcard-cards": {
      "url": "https://stampcard.rowb.app/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "app-rowb-stampcard-cards": {
      "type": "http",
      "url": "https://stampcard.rowb.app/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.app-rowb-stampcard-cards]
url = "https://stampcard.rowb.app/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "app-rowb-stampcard-cards": {
      "type": "remote",
      "url": "https://stampcard.rowb.app/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add app-rowb-stampcard-cards --url 'https://stampcard.rowb.app/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  app-rowb-stampcard-cards:
    url: "https://stampcard.rowb.app/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "app-rowb-stampcard-cards": {
      "Transport": "http",
      "Url": "https://stampcard.rowb.app/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add app-rowb-stampcard-cards -t streamable-http -u 'https://stampcard.rowb.app/mcp'
```

### Other

```json
{
  "mcpServers": {
    "app-rowb-stampcard-cards": {
      "type": "http",
      "url": "https://stampcard.rowb.app/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-10-01 (score 58, +1)

No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-29 (score 57, +1)

No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-28 (score 56, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-09-26 (score 56, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-25 (score 55, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-09-24 (score 55)

First indexed and scored.

## MCP tools (5)

### `create_program` (~61 tokens)

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).

Input parameters:

- `reward` (string)
- `shop` (string, required)
- `stamps_required` (integer)

### `stamp` (~69 tokens)

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.

Input parameters:

- `allow_multiple` (boolean)
- `code` (string)
- `token` (string)

### `get_card` (~43 tokens)

Read one customer card: how many stamps, what the reward is, whether it is ready to redeem.

Input parameters:

- `code` (string)
- `token` (string)

### `redeem` (~47 tokens)

Redeem the reward on a card that has reached its required stamps. Resets the stamp count and increments the rewards-earned counter.

Input parameters:

- `code` (string)
- `token` (string)

### `program_stats` (~31 tokens)

Program plus this month stamp usage and quota, so a shop can tell how close it is to the free limit.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/app-rowb-stampcard-cards/stampcard#diagnostics

## Score history

- 2026-10-01: 58
- 2026-09-30: 57
- 2026-09-29: 57
- 2026-09-28: 56
- 2026-09-27: 56
- 2026-09-26: 56
- 2026-09-25: 55
- 2026-09-24: 55

## Common questions

### What is the Stampcard — digital stamp cards for small shops, no app… MCP server?

Stampcard — digital stamp cards for small shops, no app… is an MCP server listed in the public MCP registry as app.rowb.stampcard/cards. Create a shop program, hand customers a browser stamp card by QR poster, stamp it from a phone. This page covers its hosted endpoint (https://stampcard.rowb.app/mcp).

### Is the Stampcard — digital stamp cards for small shops, no app… MCP server safe to use?

Stampcard — digital stamp cards for small shops, no app… scores 58 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Stampcard — digital stamp cards for small shops, no app… MCP server expose?

Stampcard — digital stamp cards for small shops, no app… exposes 5 tools: create_program, stamp, get_card, redeem, program_stats. Their descriptions and schemas cost roughly 251 tokens of context every time the server is loaded.

### Does the Stampcard — digital stamp cards for small shops, no app… MCP server require authentication?

No. We connected to Stampcard — digital stamp cards for small shops, no app… without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Stampcard — digital stamp cards for small shops, no app… MCP server still maintained?

Stampcard — digital stamp cards for small shops, no app… is still listed as active in the MCP registry. We last reached this channel on 1 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://stampcard.rowb.app/mcp
- Website: https://stampcard.rowb.app/
- Changelog RSS feed: https://verifymcp.io/servers/app-rowb-stampcard-cards/stampcard.xml
- Changelog JSON feed: https://verifymcp.io/servers/app-rowb-stampcard-cards/stampcard.json
- HTML version of this page: https://verifymcp.io/servers/app-rowb-stampcard-cards/stampcard