Japan Business Day
REMOTE · JAPAN-BUSINESS-DAY-API.MATCHAN962.WORKERS.DEV · SCANNED SEP 29
Japan business days & holidays (official Cabinet Office data). Free tool + x402 USDC paid tools.
Available components
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. How we score → Why this is hard to score →
Endpoint Security46
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not fully verified: no authorisation is required to call this server, and 11 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. See how to fix → View diagnostics → Unverified
- HTTPS enforcement could not be verified: the plaintext port answered with HTTP 406, which proves neither a plaintext path nor enforcement. View diagnostics → Unverified
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability78
- AI-judged instruction clarity (excellent).Pass
- Tool/resource definitions use about 1129 tokens (~102/item across 11 items; 11 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management10
- Stability observed for 3 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage97
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 92% 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 11 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 Japan Business Day MCP server?
Japan Business Day is a hosted endpoint at https://japan-business-day-api.matchan962.workers.dev/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.
remote · japan-business-day-api.matchan962.workers.dev
claude mcp add --transport http rira365-japan-business-day 'https://japan-business-day-api.matchan962.workers.dev/mcp'
{
"mcpServers": {
"rira365-japan-business-day": {
"url": "https://japan-business-day-api.matchan962.workers.dev/mcp"
}
}
} {
"servers": {
"rira365-japan-business-day": {
"type": "http",
"url": "https://japan-business-day-api.matchan962.workers.dev/mcp"
}
}
} [mcp_servers.rira365-japan-business-day] url = "https://japan-business-day-api.matchan962.workers.dev/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"rira365-japan-business-day": {
"type": "remote",
"url": "https://japan-business-day-api.matchan962.workers.dev/mcp",
"enabled": true
}
}
} openclaw mcp add rira365-japan-business-day --url 'https://japan-business-day-api.matchan962.workers.dev/mcp' --transport streamable-http
mcp_servers:
rira365-japan-business-day:
url: "https://japan-business-day-api.matchan962.workers.dev/mcp" {
"McpServers": {
"rira365-japan-business-day": {
"Transport": "http",
"Url": "https://japan-business-day-api.matchan962.workers.dev/mcp"
}
}
} assistant mcp add rira365-japan-business-day -t streamable-http -u 'https://japan-business-day-api.matchan962.workers.dev/mcp'
{
"mcpServers": {
"rira365-japan-business-day": {
"type": "http",
"url": "https://japan-business-day-api.matchan962.workers.dev/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
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.
- 29 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.
- 28 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
- 27 Sept 26 0
- Stability: unverified → 0.03 ▲ functional
- 26 Sept 26 60
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 29 Sept 2026 · Probed https://japan-business-day-api.matchan962.workers.dev/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=matchan962.workers.dev | CN=WE1,O=Google Trust Services,C=US | 11 Sept 2026 | 10 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | 6363fee57284032613e500dced0279d7 |
| SANs: matchan962.workers.dev, *.matchan962.workers.dev | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of japan-business-day-api.matchan962.workers.dev. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| dev. | present | 60074 | 8 | Verified |
| workers.dev. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://japan-business-day-api.matchan962.workers.dev/mcp | Verified | 200 | |
| http (plaintext) | http://japan-business-day-api.matchan962.workers.dev/mcp | Inconclusive | 406 |
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 →
add_business_days ~105
Add or subtract N Japanese business days from a date (settlement T+N, delivery ETA). Price: $0.01 USDC via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| calendar | string | – | national (default): weekends + national holidays. bank: also Dec 31 - Jan 3 bank holidays |
| date | string | yes | Date in YYYY-MM-DD. Supported range 1955-01-01..2027-12-31 |
| days | integer | yes | – |
No output schema declared.
No examples provided.
bank_value_date ~115
When will a Japanese bank transfer be credited? Returns the value date under standard processing (same day before the cutoff, default 15:00 JST, on a bank business day; otherwise next bank business day). Price: $0.01 USDC via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| cutoff | string | – | Bank cutoff HH:MM JST, default 15:00 |
| datetime | string | – | Submission time ISO 8601 (default now; no offset = JST) |
| extraDays | integer | – | Additional bank business days |
No output schema declared.
No examples provided.
find_lucky_days_japan ~146
Find auspicious Japanese dates: days in a range matching rokuyo (e.g. taian) and optional weekdays (e.g. sat,sun) for weddings, moving, contracts. Price: $0.01 USDC via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| from | string | yes | Start date YYYY-MM-DD |
| rokuyo | string | – | Comma-separated: taian,shakko,sensho,tomobiki,sakimake,butsumetsu (default taian) |
| to | string | yes | End date YYYY-MM-DD (max 366 days) |
| weekdays | string | – | Comma-separated weekdays, e.g. sat,sun |
No output schema declared.
No examples provided.
is_business_day ~110
Check whether a date is a business day in Japan (official Cabinet Office holiday data). Returns holiday name (JA/EN) and next/previous business day. Price: $0.005 USDC via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| calendar | string | – | national (default): weekends + national holidays. bank: also Dec 31 - Jan 3 bank holidays |
| date | string | yes | Date in YYYY-MM-DD. Supported range 1955-01-01..2027-12-31 |
No output schema declared.
No examples provided.
is_business_day_free ~124
FREE: check whether a date between today and 90 days ahead (JST) is a business day in Japan. Official Cabinet Office holiday data, supports bank calendar (Dec 31 - Jan 3). For other dates, business-day arithmetic or holiday lists use the paid tools.
| Name | Type | Req | Description |
|---|---|---|---|
| calendar | string | – | national (default): weekends + national holidays. bank: also Dec 31 - Jan 3 bank holidays |
| date | string | yes | Date in YYYY-MM-DD. Supported range 1955-01-01..2027-12-31 |
No output schema declared.
No examples provided.
japanese_koyomi ~73
Japanese traditional calendar for a date: rokuyo (taian/butsumetsu lucky days), Reiwa era date, lunisolar date, 24 solar terms. Price: $0.005 USDC via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| date | string | yes | YYYY-MM-DD (1955-2032) |
No output schema declared.
No examples provided.
jpx_record_date ~74
Japanese stocks: last cum-rights trading day and ex-rights date for a dividend/benefit record date (T+2 settlement, holiday-aware). Price: $0.01 USDC via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| recordDate | string | yes | Record date (kenri kakutei-bi) YYYY-MM-DD |
No output schema declared.
No examples provided.
jpx_sq_date ~59
Nikkei 225 futures/options SQ day and last trading day for a contract month (2nd Friday, moved earlier on holidays). Price: $0.01 USDC via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| month | string | yes | Contract month YYYY-MM |
No output schema declared.
No examples provided.
jpx_trading_day ~81
Is the Tokyo Stock Exchange (JPX) open on a date? Next/previous trading day, first/last trading day of the year. Price: $0.005 USDC via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| date | string | yes | Date in YYYY-MM-DD. Supported range 1955-01-01..2027-12-31 |
No output schema declared.
No examples provided.
list_holidays ~69
List Japanese national holidays for a year with JA/EN names. Price: $0.01 USDC via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| calendar | string | – | national (default): weekends + national holidays. bank: also Dec 31 - Jan 3 bank holidays |
| year | integer | yes | – |
No output schema declared.
No examples provided.
payment_due_date ~173
Japanese payment terms (shimebi/shiharaibi) calculator, e.g. month-end close paid end of next month; shifts to the previous/next business day on weekends/holidays. Price: $0.01 USDC via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| adjust | string | – | Shift when not a business day; default previous |
| calendar | string | – | national (default): weekends + national holidays. bank: also Dec 31 - Jan 3 bank holidays |
| closing | – | yes | Closing day of month (1-31) or 'end' |
| date | string | yes | Transaction or invoice date (YYYY-MM-DD) |
| monthOffset | integer | – | Months after closing; default 1 (next month) |
| payDay | – | yes | Payment day of month (1-31) or 'end' |
No output schema declared.
No examples provided.
What is the Japan Business Day MCP server?
Japan Business Day is an MCP server listed in the public MCP registry as io.github.Rira365/japan-business-day. Japan business days & holidays (official Cabinet Office data). Free tool + x402 USDC paid tools. This page covers its hosted endpoint (https://japan-business-day-api.matchan962.workers.dev/mcp).
Is the Japan Business Day MCP server safe to use?
Japan Business Day scores 62 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 Japan Business Day MCP server expose?
Japan Business Day exposes 11 tools: is_business_day_free, is_business_day, add_business_days, list_holidays, payment_due_date, and 6 more. Their descriptions and schemas cost roughly 1,129 tokens of context every time the server is loaded.
Does the Japan Business Day MCP server require authentication?
No. We connected to Japan Business Day without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Japan Business Day MCP server still maintained?
Japan Business Day is still listed as active in the MCP registry. We last reached this channel on 29 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.