Zovo Date Calculator
REMOTE · DATE-CALCULATOR.ZOVO.ONE
Days between dates & workdays
Available components
Last scanned (5 hours ago)
Scores higher than 64% of remote servers
Reachable. Last reached 23 Oct 2026.
Category Productivity and Notes
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 Security80
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- 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 Usability72
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 1429 tokens (~357/item across 4 items; 3 tools + 1 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 Management3
- Stability observed for 1 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 5 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
- Supports UI / widget rendering.Pass
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.
- 23 Oct 26 0
- Stability: unverified → 0.03 ▲ functional
- 22 Oct 26 73
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 23 Oct 2026 · Probed https://date-calculator.zovo.one/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=zovo.one | CN=WE1,O=Google Trust Services,C=US | 2 Oct 2026 | 31 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | d0836d3a9babc14613ae39a277655f59 |
| SANs: zovo.one, date-calculator.zovo.one, *.date-calculator.zovo.one | ||||||
| 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 date-calculator.zovo.one. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| one. | present | 64939 | 8 | Verified |
| zovo.one. | 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 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=15552000; includeSubDomains; preload |
| x-content-type-options | nosniff |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://date-calculator.zovo.one/mcp | Verified | 200 | |
| http (plaintext) | http://date-calculator.zovo.one/mcp | HTTPS enforced | 301 | https://date-calculator.zovo.one/mcp |
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 →
calculate_date_offset Find a date N days before or after ~550
Use this when the user wants the date that is N days or N business days (working days) before or after a date: 'what date is 90 days from today', '30 business days from Nov 3, 2026 in Germany', '10 working days before 2027-01-15', shipping or contract deadlines. Business days skip weekends and the public holidays of the given country and state, including observed weekdays for holidays that fall on a weekend (US July 4, 2027 is a Sunday, so Monday July 5 is skipped); the start date is not counted. For calendar days, roll=next_business_day moves a result that lands on a weekend or holiday to the next business day. Returns the date with its weekday, the holidays skipped, and a calendar (.ics) file. Results are informational: court and filing deadlines may have special rules (court holidays, service days). Does not handle times of day.
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | – | Country for public holidays as an ISO 3166 two-letter code, e.g. US, GB, DE, PL, AU, CA, IN. Omit to skip holidays (weekends only). |
| days | integer | yes | Number of days to add, e.g. 30; use a negative number such as -10 to go back. |
| extra_holidays | array | – | Extra non-working dates to skip, e.g. company shutdown days ["2026-12-24","2026-12-31"]. |
| include_bank_holidays | boolean | – | Also skip bank-only closing days where the data has them (e.g. Dec 24 and Dec 31 in Germany). Default false. |
| roll | string | – | For calendar days only: if the result is a weekend or holiday, move it, e.g. next_business_day for filing deadlines. Default none. |
| start | string | yes | Starting date, e.g. 2026-10-02, "Nov 3, 2026" or "today". |
| subdivision | string | – | Optional state/province/region code within the country for local holidays, e.g. TX or CA (US states), BY (Bavaria, DE), ENG or SCT (UK), NSW (AU), ON (CA). |
| unit | string | – | "calendar" counts every day (default); "business" skips weekends and holidays, e.g. business for '10 working days'. |
| weekend_days | array | – | Non-working weekdays, e.g. ["friday","saturday"]. Default saturday+sunday (friday+saturday for countries such as SA, IL, EG, QA, KW). |
| Name | Type | Req | Description |
|---|---|---|---|
| calendar | object | yes | – |
| calendar_days_spanned | number | yes | – |
| days | number | yes | – |
| downloads | object | yes | – |
| holiday_source | string | yes | – |
| holidays_in_range | array | yes | – |
| holidays_skipped | array | yes | – |
| inputs | object | yes | – |
| kind | string | yes | – |
| notes | array | yes | – |
| region | – | yes | – |
| result | object | yes | – |
| result_is_business_day | boolean | yes | – |
| roll | string | yes | – |
| rolled_from | – | yes | – |
| start | object | yes | – |
| summary | string | yes | – |
| unit | string | yes | – |
| weekend_days | array | yes | – |
| weekend_days_skipped | number | yes | – |
No examples provided.
count_days_between Count days between dates ~516
Use this when the user asks how many days are between two dates (days between dates, count days, date calculator), how many business days or working days are between two dates, or days between dates excluding weekends and public holidays for a country or US state. Returns calendar days, weeks and days, years/months/days, business days, and the holidays skipped by name. The start date is counted; set include_end_date=true to also count the end date (Excel NETWORKDAYS style). Does not handle times of day or time zones. Holidays that fall on a weekend are not double-counted, and their observed weekday off (for example US Independence Day 2026 on Saturday is observed Friday July 3) is skipped as a holiday. Results are informational: legal deadlines may have special rules such as court holidays. Do not use for writing SQL or spreadsheet formulas.
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | – | Country for public holidays as an ISO 3166 two-letter code, e.g. US, GB, DE, PL, AU, CA, IN. Omit to skip holidays (weekends only). |
| end | string | yes | Second date, e.g. 2027-01-15. Also accepts "January 15, 2027" or "today". |
| extra_holidays | array | – | Extra non-working dates to skip, e.g. company shutdown days ["2026-12-24","2026-12-31"]. |
| include_bank_holidays | boolean | – | Also skip bank-only closing days where the data has them (e.g. Dec 24 and Dec 31 in Germany). Default false. |
| include_end_date | boolean | – | Count the end date too (adds one day), e.g. true for 'from Monday through Friday'. Default false. |
| start | string | yes | First date, preferably YYYY-MM-DD, e.g. 2026-03-03. Also accepts "March 3, 2026", "3 March 2026" or "today". |
| subdivision | string | – | Optional state/province/region code within the country for local holidays, e.g. TX or CA (US states), BY (Bavaria, DE), ENG or SCT (UK), NSW (AU), ON (CA). |
| weekend_days | array | – | Non-working weekdays, e.g. ["friday","saturday"]. Default saturday+sunday (friday+saturday for countries such as SA, IL, EG, QA, KW). |
| Name | Type | Req | Description |
|---|---|---|---|
| business_days | number | yes | – |
| calendar | object | yes | – |
| calendar_days | number | yes | – |
| end | object | yes | – |
| holiday_source | string | yes | – |
| holidays_on_weekends | array | yes | – |
| holidays_skipped | array | yes | – |
| include_end_date | boolean | yes | – |
| inputs | object | yes | – |
| kind | string | yes | – |
| months | object | yes | – |
| notes | array | yes | – |
| region | – | yes | – |
| reversed | boolean | yes | – |
| start | object | yes | – |
| summary | string | yes | – |
| weekend_days | array | yes | – |
| weekend_days_count | number | yes | – |
| weeks | object | yes | – |
No examples provided.
list_holidays List public holidays ~268
Use this when the user asks which public holidays (bank holidays) a country or a state/region has in a year, e.g. 'Poland public holidays 2026' or 'Texas state holidays 2027', usually to plan working days. Returns each holiday with date, weekday, English name and whether it falls on a weekend, including the observed weekday off when a holiday falls on a weekend, plus a CSV file. Does not include school holidays, religious observances that are not days off, or company-specific closures. Do not use to check whether a stock exchange is open.
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | yes | Country as an ISO two-letter code, e.g. PL, US, GB, DE. |
| include_bank_holidays | boolean | – | Also list bank-only closing days where available, e.g. Dec 24 in Germany. Default false. |
| subdivision | string | – | Optional state/region code, e.g. TX (Texas), BY (Bavaria), SCT (Scotland). |
| weekend_days | array | – | Weekend days used to flag holidays falling on a weekend, e.g. ["friday","saturday"]. Default from the country. |
| year | integer | – | Year, e.g. 2026. Defaults to the current year. |
| Name | Type | Req | Description |
|---|---|---|---|
| count | number | yes | – |
| downloads | object | yes | – |
| holidays | array | yes | – |
| inputs | object | yes | – |
| kind | string | yes | – |
| notes | array | yes | – |
| observed_days | number | yes | – |
| on_weekdays | number | yes | – |
| region | – | yes | – |
| summary | string | yes | – |
| weekend_days | array | yes | – |
| year | number | yes | – |
No examples provided.
How do I install the Zovo Date Calculator MCP server?
Zovo Date Calculator is a hosted endpoint at https://date-calculator.zovo.one/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 · date-calculator.zovo.one
claude mcp add --transport http theluckystrike-date-calculator 'https://date-calculator.zovo.one/mcp'
What is the Zovo Date Calculator MCP server?
Zovo Date Calculator is an MCP server listed in the public MCP registry as io.github.theluckystrike/date-calculator. Days between dates & workdays. This page covers its hosted endpoint (https://date-calculator.zovo.one/mcp).
Is the Zovo Date Calculator MCP server safe to use?
Zovo Date Calculator scores 73 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 Zovo Date Calculator MCP server expose?
Zovo Date Calculator exposes 3 tools: count_days_between, calculate_date_offset, list_holidays. Their descriptions and schemas cost roughly 1,334 tokens of context every time the server is loaded.
Does the Zovo Date Calculator MCP server require authentication?
No. We connected to Zovo Date Calculator without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Zovo Date Calculator MCP server still maintained?
Zovo Date Calculator is still listed as active in the MCP registry. We last reached this channel on 23 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.