Icyn Date
NPM · @ICYN/DATE-MCP · SCANNED SEP 25
Date context for agents: Chinese lunar calendar, solar terms, holidays for 12 regions. Offline.
Available components
How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score → Why this is hard to score →
Supply Chain Security98
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- No install/post-install scripts declared.Pass
- 31 of 97 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency45
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 3 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability72
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 1423 tokens (~129/item across 11 items; 11 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management17
- Stability observed for 5 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage90
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 69% of tool parameters carry a description.Partial
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 11 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 12 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
How do I install the Icyn Date MCP server?
Icyn Date runs locally as an npm package, launched with npx -y @icyn/date-mcp. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
npm · @icyn/date-mcp
claude mcp add icyn12-tinker-icyn-date -- npx -y @icyn/date-mcp
{
"mcpServers": {
"icyn12-tinker-icyn-date": {
"command": "npx",
"args": [
"-y",
"@icyn/date-mcp"
]
}
}
} {
"servers": {
"icyn12-tinker-icyn-date": {
"command": "npx",
"args": [
"-y",
"@icyn/date-mcp"
]
}
}
} codex mcp add icyn12-tinker-icyn-date -- npx -y @icyn/date-mcp
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"icyn12-tinker-icyn-date": {
"type": "local",
"command": [
"npx",
"-y",
"@icyn/date-mcp"
],
"enabled": true
}
}
} openclaw mcp add icyn12-tinker-icyn-date --command npx --arg -y --arg @icyn/date-mcp
mcp_servers:
icyn12-tinker-icyn-date:
command: "npx"
args: ["-y", "@icyn/date-mcp"] {
"McpServers": {
"icyn12-tinker-icyn-date": {
"Transport": "stdio",
"Command": "npx",
"Arguments": [
"-y",
"@icyn/date-mcp"
]
}
}
} assistant mcp add icyn12-tinker-icyn-date -t stdio -c npx -a -y @icyn/date-mcp
{
"mcpServers": {
"icyn12-tinker-icyn-date": {
"command": "npx",
"args": [
"-y",
"@icyn/date-mcp"
]
}
}
} Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 25 Sept 26 +1
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 22 Sept 26 +32
- Injection markers: unverified → pass ▲ security
- Tool coverage: unverified → 100 ▲ functional
- Stability: unverified → 0.07 ▲ functional
- MCP protocol: unverified → pass ▲ functional
- 21 Sept 26 −31
- Tool safety: pass → unverified ▼ security
- Stability: Stability not yet verified: we do not have a sandbox capture of the MCP schema this version of the package serves yet. security
- Capabilities: pass → unverified ▼ functional
- Tool coverage: 100 → unverified ▼ functional
- First check of Schema quality: unverified functional
- Package version: 0.1.4 → 0.1.5 functional
- 20 Sept 26 69
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 25 Sept 2026 · Analysed npm/@icyn/date-mcp@0.1.5
Provenance No attestation
The registry publishes no build provenance for this version, so there is nothing to verify.
| Result | No attestation |
|---|---|
| Ecosystem | npm |
Background: How many MCP packages publish verified provenance →
Dependencies 97 packages
| Packages resolved | 97 |
|---|---|
| Stale | 31 |
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
date_context ~106
Everything known about one date in one region: weekday/ISO week, workday status with source & confidence, holiday, lunar date & 干支, current/next solar term.
| Name | Type | Req | Description |
|---|---|---|---|
| date | string | yes | ISO date YYYY-MM-DD |
| lang | string | – | – |
| region | string | – | Region code, case-insensitive: CN HK MO TW JP KR VN SG US GB DE FR, or a subdivision like US-CA, DE-BY, GB-SCT |
No output schema declared.
No examples provided.
holiday_eve ~75
Is this date the last working day before a public holiday?
| Name | Type | Req | Description |
|---|---|---|---|
| date | string | yes | ISO date YYYY-MM-DD |
| region | string | – | Region code, case-insensitive: CN HK MO TW JP KR VN SG US GB DE FR, or a subdivision like US-CA, DE-BY, GB-SCT |
No output schema declared.
No examples provided.
holidays ~94
List public holidays of a region for a year, or within a date range.
| Name | Type | Req | Description |
|---|---|---|---|
| from | string | – | ISO date YYYY-MM-DD |
| region | string | – | Region code, case-insensitive: CN HK MO TW JP KR VN SG US GB DE FR, or a subdivision like US-CA, DE-BY, GB-SCT |
| to | – | – | ISO date YYYY-MM-DD |
| year | integer | – | – |
No output schema declared.
No examples provided.
is_workday ~88
Is this date a working day in the region? Answers carry source (official/baseline/predicted) and confidence.
| Name | Type | Req | Description |
|---|---|---|---|
| date | string | yes | ISO date YYYY-MM-DD |
| region | string | – | Region code, case-insensitive: CN HK MO TW JP KR VN SG US GB DE FR, or a subdivision like US-CA, DE-BY, GB-SCT |
No output schema declared.
No examples provided.
lunar ~56
Convert a solar date to the Chinese lunar calendar (year/month/day, leap month, 干支, zodiac), or a lunar date to solar.
| Name | Type | Req | Description |
|---|---|---|---|
| date | string | – | ISO date YYYY-MM-DD |
| lunar | object | – | – |
No output schema declared.
No examples provided.
next_long_weekend ~91
Next stretch of at least N consecutive non-working days from a date (holiday + weekend runs).
| Name | Type | Req | Description |
|---|---|---|---|
| from | string | yes | ISO date YYYY-MM-DD |
| minDays | integer | – | – |
| region | string | – | Region code, case-insensitive: CN HK MO TW JP KR VN SG US GB DE FR, or a subdivision like US-CA, DE-BY, GB-SCT |
No output schema declared.
No examples provided.
next_lunar_date ~61
Next solar date on which a lunar month/day occurs (e.g. a lunar birthday or 中秋 8/15).
| Name | Type | Req | Description |
|---|---|---|---|
| day | integer | yes | – |
| from | string | yes | ISO date YYYY-MM-DD |
| month | integer | yes | – |
No output schema declared.
No examples provided.
regions ~18
Supported regions, subdivisions, data coverage and data version.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
regions_observing ~242
Which regions take a canonical festival off in a given year (e.g. lunar-new-year, mid-autumn, christmas), and on which dates.
| Name | Type | Req | Description |
|---|---|---|---|
| festival | string | yes | One of: all-saints, armed-forces-day, armistice, ascension, assumption, autumnal-equinox, bank-holiday, boxing-day, childrens-day, christmas, columbus-day, coming-of-age, constitution-day, culture-da… |
| year | integer | yes | – |
No output schema declared.
No examples provided.
solar_terms ~34
The 24 solar terms (节气) of a year with exact instants (UTC).
| Name | Type | Req | Description |
|---|---|---|---|
| year | integer | yes | – |
No output schema declared.
No examples provided.
workdays ~119
Workday arithmetic: list or count workdays in a range, or move N workdays from a date (negative = backwards).
| Name | Type | Req | Description |
|---|---|---|---|
| add | integer | – | Move this many workdays from `from` instead of listing a range |
| from | string | yes | ISO date YYYY-MM-DD |
| region | string | – | Region code, case-insensitive: CN HK MO TW JP KR VN SG US GB DE FR, or a subdivision like US-CA, DE-BY, GB-SCT |
| to | – | – | ISO date YYYY-MM-DD |
No output schema declared.
No examples provided.
What is the Icyn Date MCP server?
Icyn Date is an MCP server listed in the public MCP registry as io.github.icyn12-tinker/icyn-date. Date context for agents: Chinese lunar calendar, solar terms, holidays for 12 regions. Offline. This page covers its npm package (@icyn/date-mcp).
Is the Icyn Date MCP server safe to use?
Icyn Date scores 71 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 25 September 2026. It declares no install or post-install scripts. 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 Icyn Date MCP server expose?
Icyn Date exposes 11 tools: date_context, is_workday, holidays, workdays, next_long_weekend, and 6 more. Their descriptions and schemas cost roughly 984 tokens of context every time the server is loaded.
Is the Icyn Date MCP server still maintained?
Icyn Date is still listed as active in the MCP registry. We last reached this channel on 25 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.
What licence is the Icyn Date MCP server under?
Icyn Date declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.