# Saymon RU Data API (remote · payforapi.com)

Russian company lookup (EGRUL/INN), Cyrillic search, RU page to Markdown. Pay per call in USDC.

- Trust score: 69/100 (medium)
- Change this week: +2
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-28

## Components

- remote · `payforapi.com`: 69/100 (this document), [markdown](https://verifymcp.io/servers/com-payforapi-saymon-ru-data-api/payforapi.md), [page](https://verifymcp.io/servers/com-payforapi-saymon-ru-data-api/payforapi)

## Channel facts

- Endpoint: `https://payforapi.com/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.5.0`

## 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 2026-09-28.

- **Endpoint Security**: 63/100
  - 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 20 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 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**: 62/100
  - AI-judged instruction clarity (fair).
  - Tool/resource definitions use about 1150 tokens (~57/item across 20 items; 20 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 50/100
  - Stability check failed: schema churn in the 30 days we've observed: 0 tool removals, 11 breaking changes, 0 auth/transport breaks, 9 additions.
- **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 20 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 20 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 Saymon RU Data API MCP server?

Saymon RU Data API is a hosted endpoint at https://payforapi.com/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 com-payforapi-saymon-ru-data-api 'https://payforapi.com/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "com-payforapi-saymon-ru-data-api": {
      "url": "https://payforapi.com/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "com-payforapi-saymon-ru-data-api": {
      "type": "http",
      "url": "https://payforapi.com/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.com-payforapi-saymon-ru-data-api]
url = "https://payforapi.com/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-payforapi-saymon-ru-data-api": {
      "type": "remote",
      "url": "https://payforapi.com/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-payforapi-saymon-ru-data-api --url 'https://payforapi.com/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-payforapi-saymon-ru-data-api:
    url: "https://payforapi.com/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "com-payforapi-saymon-ru-data-api": {
      "Transport": "http",
      "Url": "https://payforapi.com/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add com-payforapi-saymon-ru-data-api -t streamable-http -u 'https://payforapi.com/mcp'
```

### Other

```json
{
  "mcpServers": {
    "com-payforapi-saymon-ru-data-api": {
      "type": "http",
      "url": "https://payforapi.com/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.

### 2026-09-28 (score 69, +2)

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

### 2026-09-25 (score 67, 0)

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

### 2026-09-21 (score 67, +1)

No change was recorded against any check on this day. Stability & Change Management went from 43 to 47.

### 2026-09-19 (score 66, +1)

No change was recorded against any check on this day. Stability & Change Management went from 37 to 40.

### 2026-09-17 (score 65, 0)

- [security regression] Judged manipulation: pass → unverified
- [functional regression] Schema quality: 881 → 1150
- [functional] New tool “fns_npd_check”
- [functional] New tool “ru_search_x10”
- [functional] New tool “ru_search_x100”
- [functional] New tool “ticker”
- [functional] New tool “web_search”

### 2026-09-15 (score 65, +1)

No change was recorded against any check on this day. Stability & Change Management went from 23 to 27.

### 2026-09-12 (score 64, +1)

No change was recorded against any check on this day. Stability & Change Management went from 13 to 17.

### 2026-09-11 (score 63, −3)

- [security regression] Stability: 0.60 → fail
- [security regression] A breaking change shipped without a version bump: still 1.30.0
- [security improvement] HSTS header: fail → pass
- [functional regression] “company_report” added a required parameter “inn”, so existing callers break
- [functional regression] “inn_lookup” added a required parameter “inn”, so existing callers break
- [functional regression] “pochta_address” added a required parameter “address”, so existing callers break
- [functional regression] “pochta_delivery” added a required parameter “from_index”, so existing callers break
- [functional regression] “pochta_delivery_time” added a required parameter “from_index”, so existing callers break
- [functional regression] “pochta_delivery_time” added a required parameter “to_index”, so existing callers break
- [functional regression] “pochta_tariff” added a required parameter “from_index”, so existing callers break
- [functional regression] “pochta_tariff” added a required parameter “to_index”, so existing callers break
- [functional regression] “pochta_track” added a required parameter “barcode”, so existing callers break
- [functional regression] “pochta_zip” added a required parameter “postal_code”, so existing callers break
- [functional regression] “ru_page” added a required parameter “url”, so existing callers break
- [functional regression] “ru_research” added a required parameter “query”, so existing callers break
- [functional regression] “ru_research_deep” added a required parameter “query”, so existing callers break
- [functional regression] “ru_search” added a required parameter “query”, so existing callers break
- [functional regression] “cbr_rates” dropped the required parameter “args”
- [functional regression] “cbr_rates” dropped the required parameter “extra”
- [functional regression] “company_report” dropped the required parameter “args”
- [functional regression] “company_report” dropped the required parameter “extra”
- [functional regression] “inn_lookup” dropped the required parameter “args”
- [functional regression] “inn_lookup” dropped the required parameter “extra”
- [functional regression] “moex_quote” dropped the required parameter “args”
- [functional regression] “moex_quote” dropped the required parameter “extra”
- [functional regression] “pochta_address” dropped the required parameter “args”
- [functional regression] “pochta_address” dropped the required parameter “extra”
- [functional regression] “pochta_delivery” dropped the required parameter “args”
- [functional regression] “pochta_delivery” dropped the required parameter “extra”
- [functional regression] “pochta_delivery_time” dropped the required parameter “args”
- [functional regression] “pochta_delivery_time” dropped the required parameter “extra”
- [functional regression] “pochta_offices” dropped the required parameter “args”
- [functional regression] “pochta_offices” dropped the required parameter “extra”
- [functional regression] “pochta_tariff” dropped the required parameter “args”
- [functional regression] “pochta_tariff” dropped the required parameter “extra”
- [functional regression] “pochta_track” dropped the required parameter “args”
- [functional regression] “pochta_track” dropped the required parameter “extra”
- [functional regression] “pochta_zip” dropped the required parameter “args”
- [functional regression] “pochta_zip” dropped the required parameter “extra”
- [functional regression] “ru_page” dropped the required parameter “args”
- [functional regression] “ru_page” dropped the required parameter “extra”
- [functional regression] “ru_research” dropped the required parameter “args”
- [functional regression] “ru_research” dropped the required parameter “extra”
- [functional regression] “ru_research_deep” dropped the required parameter “args”
- [functional regression] “ru_research_deep” dropped the required parameter “extra”
- [functional regression] “ru_search” dropped the required parameter “args”
- [functional regression] “ru_search” dropped the required parameter “extra”
- [cosmetic] “cbr_rates” added an optional parameter “currencies”
- [cosmetic] “company_report” added an optional parameter “limit”
- [cosmetic] “company_report” added an optional parameter “max_pages”
- [cosmetic] “moex_quote” added an optional parameter “market”
- [cosmetic] “moex_quote” added an optional parameter “symbol”
- [cosmetic] “pochta_delivery” added an optional parameter “declared_value”
- [cosmetic] “pochta_delivery” added an optional parameter “mail_category”
- [cosmetic] “pochta_delivery” added an optional parameter “mail_type”
- [cosmetic] “pochta_delivery” added an optional parameter “to_address”
- [cosmetic] “pochta_delivery” added an optional parameter “to_index”
- [cosmetic] “pochta_delivery” added an optional parameter “weight”
- [cosmetic] “pochta_delivery_time” added an optional parameter “mail_category”
- [cosmetic] “pochta_delivery_time” added an optional parameter “mail_type”
- [cosmetic] “pochta_offices” added an optional parameter “latitude”
- [cosmetic] “pochta_offices” added an optional parameter “longitude”
- [cosmetic] “pochta_offices” added an optional parameter “postal_code”
- [cosmetic] “pochta_offices” added an optional parameter “top”
- [cosmetic] “pochta_tariff” added an optional parameter “declared_value”
- [cosmetic] “pochta_tariff” added an optional parameter “dimension_type”
- [cosmetic] “pochta_tariff” added an optional parameter “mail_category”
- [cosmetic] “pochta_tariff” added an optional parameter “mail_type”
- [cosmetic] “pochta_tariff” added an optional parameter “weight”
- [cosmetic] “ru_research” added an optional parameter “limit”
- [cosmetic] “ru_research” added an optional parameter “max_pages”
- [cosmetic] “ru_research_deep” added an optional parameter “limit”
- [cosmetic] “ru_research_deep” added an optional parameter “max_pages”
- [cosmetic] “ru_search” added an optional parameter “limit”

## MCP tools (20)

### `inn_lookup` (~39 tokens)

Проверка российского юрлица по ИНН (ЕГРЮЛ). $0.01 USDC

Input parameters:

- `inn` (string, required)

### `ru_search` (~41 tokens)

Кириллический веб-поиск для агентов. $0.02 USDC

Input parameters:

- `limit` (integer)
- `query` (string, required)

### `ru_page` (~33 tokens)

RU-страница URL -> LLM-ready Markdown. $0.01 USDC

Input parameters:

- `url` (string, required)

### `ru_research` (~59 tokens)

Research-пакет: кириллический поиск + top-страницы в Markdown одним платежом. $0.02 USDC

Input parameters:

- `limit` (integer)
- `max_pages` (integer)
- `query` (string, required)

### `ru_research_deep` (~60 tokens)

Research-пакет deep: 3 поиска + до 10 страниц в Markdown одним платежом. $0.05 USDC

Input parameters:

- `limit` (integer)
- `max_pages` (integer)
- `query` (string, required)

### `company_report` (~93 tokens)

Пакет «Проверка контрагента» (KYB-досье): ЕГРЮЛ + статус самозанятого (НПД) + deep-досье по рунету одним платежом — 3 сервиса в одном. $0.05 USDC

Input parameters:

- `inn` (string, required)
- `limit` (integer)
- `max_pages` (integer)

### `cbr_rates` (~57 tokens)

Официальные курсы ЦБ РФ (ежедневные, обновление раз в день): USD, EUR, CNY, GBP, KZT и другие ISO-коды. $0.008 USDC

Input parameters:

- `currencies`

### `moex_quote` (~73 tokens)

Котировки Московской биржи (MOEX ISS): последняя цена акций (SBER, GAZP...), валютных пар (USD/EUR/CNY) и индексов (IMOEX). $0.008 USDC

Input parameters:

- `market` (string)
- `symbol` (string)

### `pochta_tariff` (~85 tokens)

Почта России: стоимость и сроки доставки между индексами (официальный API). $0.01 USDC

Input parameters:

- `declared_value`
- `dimension_type`
- `from_index` (string, required)
- `mail_category` (string)
- `mail_type` (string)
- `to_index` (string, required)
- `weight` (integer)

### `pochta_track` (~39 tokens)

Почта России: отслеживание отправления по трек-номеру. $0.01 USDC

Input parameters:

- `barcode` (string, required)

### `pochta_delivery_time` (~63 tokens)

Почта России: сроки доставки между индексами (в днях). $0.01 USDC

Input parameters:

- `from_index` (string, required)
- `mail_category` (string)
- `mail_type` (string)
- `to_index` (string, required)

### `pochta_offices` (~58 tokens)

Почта России: отделения по индексу или ближайшие по координатам. $0.01 USDC

Input parameters:

- `latitude`
- `longitude`
- `postal_code`
- `top` (integer)

### `pochta_zip` (~41 tokens)

Почта России: адрес отделения и населённый пункт по индексу. $0.01 USDC

Input parameters:

- `postal_code` (string, required)

### `pochta_address` (~44 tokens)

Почта России: нормализация российского адреса (индекс, регион, улица, дом). $0.01 USDC

Input parameters:

- `address` (string, required)

### `pochta_delivery` (~96 tokens)

Пакет «Доставка Почты России»: адрес, индекс, отделение, стоимость и срок одним платежом — 5 сервисов в одном. $0.04 USDC

Input parameters:

- `declared_value`
- `from_index` (string, required)
- `mail_category` (string)
- `mail_type` (string)
- `to_address`
- `to_index`
- `weight` (integer)

### `fns_npd_check` (~48 tokens)

Статус самозанятого (НПД) по ИНН через реестр ФНС. $0.01 USDC

Input parameters:

- `inn` (string, required)

### `ru_search_x10` (~57 tokens)

Кириллический веб-поиск пакетом: до 10 запросов одним платежом (скидка 10%). $0.18 USDC

Input parameters:

- `limit` (integer)
- `queries` (array, required)

### `ru_search_x100` (~57 tokens)

Кириллический веб-поиск пакетом: до 100 запросов одним платежом (скидка 20%). $1.60 USDC

Input parameters:

- `limit` (integer)
- `queries` (array, required)

### `ticker` (~52 tokens)

Крипто-тикеры Bybit (spot): цена, изменение за 24ч, объёмы (BTCUSDT, ETHUSDT...). $0.005 USDC

Input parameters:

- `symbol` (string)

### `web_search` (~55 tokens)

Глобальный веб-поиск (Tavily через x402): свежие результаты и краткий ответ по запросу. $0.02 USDC

Input parameters:

- `limit` (integer)
- `query` (string, required)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-payforapi-saymon-ru-data-api/payforapi#diagnostics

## Score history

- 2026-09-28: 69
- 2026-09-27: 67
- 2026-09-26: 67
- 2026-09-25: 67
- 2026-09-24: 67
- 2026-09-23: 67
- 2026-09-22: 67
- 2026-09-21: 67
- 2026-09-20: 66
- 2026-09-19: 66
- 2026-09-18: 65
- 2026-09-17: 65
- 2026-09-16: 65
- 2026-09-15: 65
- 2026-09-14: 64
- 2026-09-13: 64
- 2026-09-12: 64
- 2026-09-11: 63
- 2026-09-10: 66
- 2026-09-09: 66
- 2026-09-08: 65
- 2026-09-07: 65
- 2026-09-06: 65
- 2026-09-05: 64
- 2026-09-04: 64
- 2026-09-03: 63
- 2026-09-02: 62
- 2026-09-01: 62
- 2026-08-31: 61
- 2026-08-30: 61

## Common questions

### What is the Saymon RU Data API MCP server?

Saymon RU Data API is an MCP server listed in the public MCP registry as com.payforapi/saymon-ru-data-api. Russian company lookup (EGRUL/INN), Cyrillic search, RU page to Markdown. Pay per call in USDC. This page covers its hosted endpoint (https://payforapi.com/mcp).

### Is the Saymon RU Data API MCP server safe to use?

Saymon RU Data API scores 69 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 Saymon RU Data API MCP server expose?

Saymon RU Data API exposes 20 tools: inn_lookup, ru_search, ru_page, ru_research, ru_research_deep, and 15 more. Their descriptions and schemas cost roughly 1,150 tokens of context every time the server is loaded.

### Does the Saymon RU Data API MCP server require authentication?

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

### Is the Saymon RU Data API MCP server still maintained?

Saymon RU Data API is still listed as active in the MCP registry. We last reached this channel on 28 September 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://payforapi.com/mcp
- Changelog RSS feed: https://verifymcp.io/servers/com-payforapi-saymon-ru-data-api/payforapi.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-payforapi-saymon-ru-data-api/payforapi.json
- HTML version of this page: https://verifymcp.io/servers/com-payforapi-saymon-ru-data-api/payforapi