# cn.pianam.mcp/calendar-mcp (remote · mcp.pianam.cn)

China holidays and lunar calendar lookup, solar-to-lunar conversion and yearly schedule.

- Trust score: 0/100 (low)
- Change this week: −34
- Registry status: active
- Liveness: dead
- Owner verified: no
- Last scored: 2026-09-28

> **Dead**: every channel of this server has been unreachable for long enough to be marked dead. Its trust score is pinned to 0 and does not recover automatically.

## Components

- remote · `mcp.pianam.cn`: 0/100 (this document), [markdown](https://verifymcp.io/servers/cn-pianam-mcp-calendar-mcp/calendar-mcp-mcp.md), [page](https://verifymcp.io/servers/cn-pianam-mcp-calendar-mcp/calendar-mcp-mcp)

## Channel facts

- Endpoint: `https://mcp.pianam.cn/calendar-mcp/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 2026-09-28.

- **Endpoint Security**: 11/100
  - TLS not yet verified: we couldn't open a connection to check the certificate.
  - Authorisation not yet verified: we couldn't confirm whether this endpoint requires it.
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS not yet verified: we couldn't read the response headers to check for it.
  - DNSSEC not yet verified: we couldn't validate it against a resolver.
- **Transport & Reachability**: 0/100
  - Transport check failed: declared streamable-http, but we couldn't connect to verify it.
- **Schema Quality & AI Usability**: 0/100
  - Schema not yet verified: we couldn't read the endpoint's schema, or could read only part of its tool list.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **Tool Coverage**: 0/100
  - Tool coverage not yet verified: we couldn't read the endpoint's tools, or could read only part of the list.
- **Tool Safety**: 0/100
  - Tool safety not yet verified: we couldn't read the endpoint's tools, or could read only part of the list.
- **Capabilities**: 0/100
  - Capabilities not yet verified: we couldn't read the endpoint's capabilities.

**Unverified: 5 categories.** Categories scored 0 because we could not verify them: authentication we do not have, an unreachable endpoint, or not enough scan history. We only credit what we can confirm.

## Install

### How do I install the cn.pianam.mcp/calendar-mcp server?

cn.pianam.mcp/calendar-mcp is a hosted endpoint at https://mcp.pianam.cn/calendar-mcp/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 cn-pianam-mcp-calendar-mcp 'https://mcp.pianam.cn/calendar-mcp/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "cn-pianam-mcp-calendar-mcp": {
      "url": "https://mcp.pianam.cn/calendar-mcp/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "cn-pianam-mcp-calendar-mcp": {
      "type": "http",
      "url": "https://mcp.pianam.cn/calendar-mcp/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.cn-pianam-mcp-calendar-mcp]
url = "https://mcp.pianam.cn/calendar-mcp/mcp"
```

### opencode

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

### OpenClaw

```bash
openclaw mcp add cn-pianam-mcp-calendar-mcp --url 'https://mcp.pianam.cn/calendar-mcp/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  cn-pianam-mcp-calendar-mcp:
    url: "https://mcp.pianam.cn/calendar-mcp/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "cn-pianam-mcp-calendar-mcp": {
      "Transport": "http",
      "Url": "https://mcp.pianam.cn/calendar-mcp/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add cn-pianam-mcp-calendar-mcp -t streamable-http -u 'https://mcp.pianam.cn/calendar-mcp/mcp'
```

### Other

```json
{
  "mcpServers": {
    "cn-pianam-mcp-calendar-mcp": {
      "type": "http",
      "url": "https://mcp.pianam.cn/calendar-mcp/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 0, −11)

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

### 2026-09-27 (score 11, −11)

The score moved with no change recorded against any check. We would rather say so than guess.

### 2026-09-26 (score 22, −12)

The score moved with no change recorded against any check. We would rather say so than guess.

### 2026-09-25 (score 34, 0)

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

### 2026-09-19 (score 34, −11)

The score moved with no change recorded against any check. We would rather say so than guess.

### 2026-09-18 (score 45, −11)

The score moved with no change recorded against any check. We would rather say so than guess.

### 2026-09-16 (score 56, 0)

- [security regression] Endpoint reachability: reachable → unreachable
- [security regression] Stability: fail → unverified
- [security regression] DNSSEC: fail → unverified
- [security regression] HSTS header: fail → unverified
- [security regression] Tool safety: pass → unverified
- [security regression] TLS certificate: pass → unverified
- [security regression] Transport: pass → fail
- [security improvement] HTTPS: unverified → pass
- [security] Authorization: Authorisation not yet verified: we couldn't confirm whether this endpoint requires it.
- [functional regression] Capabilities: pass → unverified
- [functional regression] Tool coverage: 100 → unverified
- [functional] First check of Schema quality: unverified

### 2026-09-06 (score 56, −5)

- [security regression] Stability: unverified → fail
- [functional regression] Tool coverage: 100% → 0%
- [functional regression] Tool “list_holidays” dropped its output schema
- [functional regression] Tool “query_holiday” dropped its output schema
- [functional regression] Tool “solar_to_lunar” dropped its output schema
- [functional improvement] Schema quality: 67 → 54
- [functional] The server no longer declares the “logging” capability
- [functional] Schema quality: excellent → good
- [functional] MCP protocol: Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.
- [functional] MCP protocol version: 2026-07-28 → 2025-11-25
- [functional] Server version: 4.0.2 → 1.29.1
- [cosmetic] “list_holidays” reworded the description of “year”
- [cosmetic] “query_holiday” reworded the description of “date”
- [cosmetic] “solar_to_lunar” reworded the description of “day”
- [cosmetic] “solar_to_lunar” reworded the description of “month”
- [cosmetic] “solar_to_lunar” reworded the description of “year”
- [cosmetic] Tool “list_holidays” changed its title: List Holidays
- [cosmetic] Tool “query_holiday” changed its title: Query Holiday
- [cosmetic] Tool “solar_to_lunar” changed its title: Solar To Lunar

## MCP tools (3)

### `query_holiday` (~54 tokens)

查询指定公历日期的中国法定节假日或调休安排，同时返回农历信息。支持2025、2026年。参数date格式：YYYY-MM-DD

Input parameters:

- `date` (string, required)

### `solar_to_lunar` (~59 tokens)

将公历日期转换为农历日期，返回农历年月日、是否闰月、生肖、干支等信息

Input parameters:

- `day` (integer, required)
- `month` (integer, required)
- `year` (integer, required)

### `list_holidays` (~49 tokens)

列出指定年份的全部中国法定节假日安排，包括放假日期和调休上班日期。支持2025、2026年

Input parameters:

- `year` (integer, required)

## Diagnostics

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

## Score history

- 2026-09-28: 0
- 2026-09-27: 11
- 2026-09-26: 22
- 2026-09-25: 34
- 2026-09-24: 34
- 2026-09-23: 34
- 2026-09-22: 34
- 2026-09-21: 34
- 2026-09-20: 34
- 2026-09-19: 34
- 2026-09-18: 45
- 2026-09-17: 56
- 2026-09-16: 56
- 2026-09-15: 56
- 2026-09-14: 56
- 2026-09-13: 56
- 2026-09-12: 56
- 2026-09-11: 56
- 2026-09-10: 56
- 2026-09-09: 56
- 2026-09-08: 56
- 2026-09-07: 56
- 2026-09-06: 56
- 2026-09-05: 61

## Common questions

### What is the cn.pianam.mcp/calendar-mcp server?

cn.pianam.mcp/calendar-mcp is listed in the public MCP registry as cn.pianam.mcp/calendar-mcp. China holidays and lunar calendar lookup, solar-to-lunar conversion and yearly schedule. This page covers its hosted endpoint (https://mcp.pianam.cn/calendar-mcp/mcp).

### Is the cn.pianam.mcp/calendar-mcp server safe to use?

cn.pianam.mcp/calendar-mcp scores 0 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 cn.pianam.mcp/calendar-mcp server expose?

cn.pianam.mcp/calendar-mcp exposes 3 tools: query_holiday, solar_to_lunar, list_holidays. Their descriptions and schemas cost roughly 162 tokens of context every time the server is loaded.

### Does the cn.pianam.mcp/calendar-mcp server require authentication?

Its publisher declares no required credentials for cn.pianam.mcp/calendar-mcp. We have not been able to confirm that against the live endpoint, and a server can require authorisation without declaring it here.

### Is the cn.pianam.mcp/calendar-mcp server still maintained?

cn.pianam.mcp/calendar-mcp has been unreachable for long enough that we treat it as dead, and its score is pinned to zero. We last reached this channel on 15 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What did VerifyMCP test on the cn.pianam.mcp/calendar-mcp server?

VerifyMCP ran 2 checks on cn.pianam.mcp/calendar-mcp, covering HTTPS and Transport. 9 items could not be completed, a gap on our side rather than a finding about cn.pianam.mcp/calendar-mcp: TLS certificate, Authorization, HSTS header, DNSSEC and 5 more. 5 categories score 0 for that reason, because we only credit what we can confirm. Supply Chain Security and Provenance & Transparency do not apply to a hosted endpoint, so they were not tested. The score does not measure everything, and the scoring documentation lists what it leaves out.

## Links

- Remote endpoint: https://mcp.pianam.cn/calendar-mcp/mcp
- Repository: https://github.com/boy-373/calendar-mcp
- Changelog RSS feed: https://verifymcp.io/servers/cn-pianam-mcp-calendar-mcp/calendar-mcp-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/cn-pianam-mcp-calendar-mcp/calendar-mcp-mcp/changelog.json
- Trust report (JSON): https://verifymcp.io/servers/cn-pianam-mcp-calendar-mcp/calendar-mcp-mcp.json
- HTML version of this page: https://verifymcp.io/servers/cn-pianam-mcp-calendar-mcp/calendar-mcp-mcp