# Lab4U (remote · mcp.lab4u.ru)

Lab4U (Russia): pick lab tests for a goal or a doctor's list and build a cart on lab4u.ru

- Trust score: 78/100 (medium)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `mcp.lab4u.ru`: 78/100 (this document), [markdown](https://verifymcp.io/servers/ru-lab4u-mcp-lab4u/mcp.md), [page](https://verifymcp.io/servers/ru-lab4u-mcp-lab4u/mcp)

## Channel facts

- Endpoint: `https://mcp.lab4u.ru/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 2026-11-05.

- **Endpoint Security**: 80/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - 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**: 64/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 1382 tokens (~276/item across 5 items; 5 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 47/100
  - Stability observed for 14 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **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 6 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the Lab4U MCP server?

Lab4U is a hosted endpoint at https://mcp.lab4u.ru/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 ru-lab4u-mcp-lab4u 'https://mcp.lab4u.ru/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "ru-lab4u-mcp-lab4u": {
      "url": "https://mcp.lab4u.ru/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "ru-lab4u-mcp-lab4u": {
      "type": "http",
      "url": "https://mcp.lab4u.ru/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.ru-lab4u-mcp-lab4u]
url = "https://mcp.lab4u.ru/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "ru-lab4u-mcp-lab4u": {
      "type": "remote",
      "url": "https://mcp.lab4u.ru/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add ru-lab4u-mcp-lab4u --url 'https://mcp.lab4u.ru/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  ru-lab4u-mcp-lab4u:
    url: "https://mcp.lab4u.ru/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "ru-lab4u-mcp-lab4u": {
      "Transport": "http",
      "Url": "https://mcp.lab4u.ru/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add ru-lab4u-mcp-lab4u -t streamable-http -u 'https://mcp.lab4u.ru/mcp'
```

### Other

```json
{
  "mcpServers": {
    "ru-lab4u-mcp-lab4u": {
      "type": "http",
      "url": "https://mcp.lab4u.ru/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.

### 2026-11-04 (score 78, +1)

No change was recorded against any check on this day. Stability & Change Management went from 40 to 43. That category is still filling its 30-day observation window: 12 days of observed history at the previous scan, 13 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-02 (score 77, +1)

No change was recorded against any check on this day. Stability & Change Management went from 33 to 37. That category is still filling its 30-day observation window: 10 days of observed history at the previous scan, 11 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-31 (score 76, +1)

No change was recorded against any check on this day. Stability & Change Management went from 27 to 30. That category is still filling its 30-day observation window: 8 days of observed history at the previous scan, 9 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-29 (score 75, +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.

### 2026-10-27 (score 74, +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.

### 2026-10-24 (score 73, +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.

### 2026-10-23 (score 72, 0)

- [functional improvement] Stability: unverified → 0.03

### 2026-10-22 (score 72)

First indexed and scored.

## MCP tools (5)

### `lab4u_cities` (~82 tokens)

Города Lab4U

Список городов, где можно сдать анализы Lab4U. Вызывай первым, чтобы получить location_id города пользователя. Если города нет в списке, скажи, что Lab4U там не работает.

Input parameters:

- `name`: Часть названия города, например «Казань». Не указывай, чтобы получить весь список

Output parameters:

- `result` (string)

### `lab4u_tests_search` (~219 tokens)

Поиск анализов

Поиск анализов и комплексов Lab4U по ключевым словам: название, сокращение, показатель или тема (например, «ОАК», «витамин D», «TSH», «щитовидная железа»). Принимает список запросов — передавай все нужные сразу, а не всю фразу пользователя. location_id обязателен: без него не видно доступность и сроки. Комплексы в ответе идут первыми. У каждой позиции есть метка «нашлось» и состав комплекса — используй их, чтобы выбрать подходящее и не предлагать лишнее.

Input parameters:

- `location_id` (integer, required): ID города из lab4u_cities. Обязателен: без него не видно доступность и сроки
- `queries` (array, required): Ключевые слова, от 1 до 10: названия анализов, сокращения, показатели или темы. Например: ["ТТГ", "Т4 свободный", "щитовидная железа"]

Output parameters:

- `result` (string)

### `lab4u_test_details` (~104 tokens)

Подробности об анализе

Подробности об одном анализе в городе: доступен ли, срок готовности, работает ли в выходные, ограничения по полу, какие показатели входят, ссылка на страницу с правилами подготовки. Вызывай, когда пользователь спрашивает про конкретный анализ или нужно сравнить похожие.

Input parameters:

- `location_id` (integer, required): ID города из lab4u_cities
- `test_id` (integer, required): ID анализа или комплекса из lab4u_tests_search

Output parameters:

- `result` (string)

### `lab4u_basket_check` (~135 tokens)

Проверка списка анализов

Проверяет список анализов, который назвал или выбрал пользователь, перед сборкой корзины. Находит самый подходящий готовый комплекс: включает хотя бы 2 анализа из списка и добавляет не больше 10. Показывает, что недоступно в городе и что нельзя заказать отдельно. Вызывай, когда у пользователя есть конкретный список анализов, в том числе от врача.

Input parameters:

- `location_id` (integer, required): ID города из lab4u_cities
- `test_ids` (array, required): ID анализов, которые назвал или выбрал пользователь, от 1 до 20

Output parameters:

- `result` (string)

### `lab4u_cart_link_create` (~135 tokens)

Корзина на lab4u.ru

Собирает корзину на lab4u.ru из списка ID анализов (до 20) для города и возвращает ссылку. Вызывай, когда пользователь согласился со списком. Если у пользователя был конкретный список анализов, сначала проверь его через lab4u_basket_check. Сообщи о недоступных в городе и несовместимых анализах из ответа.

Input parameters:

- `location_id` (integer, required): ID города из lab4u_cities
- `test_ids` (array, required): ID анализов и комплексов из lab4u_tests_search, от 1 до 20

Output parameters:

- `result` (string)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/ru-lab4u-mcp-lab4u/mcp#diagnostics

## Score history

- 2026-11-05: 78
- 2026-11-04: 78
- 2026-11-03: 77
- 2026-11-02: 77
- 2026-11-01: 76
- 2026-10-31: 76
- 2026-10-30: 75
- 2026-10-29: 75
- 2026-10-28: 74
- 2026-10-27: 74
- 2026-10-26: 73
- 2026-10-25: 73
- 2026-10-24: 73
- 2026-10-23: 72
- 2026-10-22: 72

## Common questions

### What is the Lab4U MCP server?

Lab4U is an MCP server listed in the public MCP registry as ru.lab4u.mcp/lab4u. Lab4U (Russia): pick lab tests for a goal or a doctor's list and build a cart on lab4u.ru. This page covers its hosted endpoint (https://mcp.lab4u.ru/mcp).

### Is the Lab4U MCP server safe to use?

Lab4U scores 78 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 Lab4U MCP server expose?

Lab4U exposes 5 tools: lab4u_cities, lab4u_tests_search, lab4u_test_details, lab4u_basket_check, lab4u_cart_link_create. Their descriptions and schemas cost roughly 675 tokens of context every time the server is loaded.

### Does the Lab4U MCP server require authentication?

No. We connected to Lab4U without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Lab4U MCP server still maintained?

Lab4U is still listed as active in the MCP registry. We last reached this channel on 5 November 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://mcp.lab4u.ru/mcp
- Website: https://mcp.lab4u.ru/
- Changelog RSS feed: https://verifymcp.io/servers/ru-lab4u-mcp-lab4u/mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/ru-lab4u-mcp-lab4u/mcp.json
- HTML version of this page: https://verifymcp.io/servers/ru-lab4u-mcp-lab4u/mcp