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tilwhen date engine MCP server

by tilwhen.com·com.tilwhen/tilwhen·v1.0.1
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Deterministic date arithmetic with auditable receipts: business days, due dates, holidays.

C60/100grade C
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Safety scan
C60/100

full report

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tilwhen date engine tools (9, 1 write)

write = sends, deletes, buys or posts
  • add_daysFree

    The date N whole calendar days after a date (exclusive counting: the start date is day 0). Omit date for today in tz. For working days use business_days; for the gap between two dates use days_between.

  • business_daysFree

    Span mode (from+to): business days between two dates, exclusive of the start day, inclusive of the end day. Add mode (days, optional date): the date N business days away. Optional holiday jurisdiction or custom calendar, and a selectable working week.

  • days_betweenFree

    Signed whole calendar days from one date to another, midnight to midnight, endpoints exclusive (the gap).

  • explainwrite actionFree

    Runs any operation and returns the receipt plus human-readable derivation steps. Set op, then pass the fields that operation's own tool takes. Use it when the user asks how an answer was reached.

  • holidaysFree

    Observed public holidays with the nominal (legal) date and status: rule (statutory) or declared (officially declared for that year). Declared-only holidays are omitted for undeclared years, with a holiday_data_incomplete warning.

  • invoice_dueFree

    Due date for Net-N payment terms (calendar days, invoice date = day 0). Optional roll-forward past weekends and, with a jurisdiction or custom calendar, public holidays.

  • next_occurrenceFree

    The next occurrence strictly after the base date (default today) of either a tracked event slug (e.g. "christmas") or a weekday (0 = Sunday .. 6 = Saturday). Provide exactly one of event/weekday.

  • parse_date_queryFree

    Parses queries like "90 business days from today in uganda" into a normalized operation, answers it, and returns the auditable receipt. Ambiguous dates (03/04/2027) return needsClarification instead of a guess.

  • subtract_daysFree

    The date N whole calendar days before a date (exclusive counting: the start date is day 0). Omit date for today in tz. For working days use business_days; for the gap between two dates use days_between.

Public scan report

scanner v0.1.5 · 2026-09-19 · same rubric, same numbers if you re-run it

1 high1 low
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 684ms20/20
  • Tool poisoning9 tool descriptions checked15/15
  • Auth qualityopen endpoint exposes 1 write-action tools with no auth3/15
  • Maintenanceno repository listed3/15
  • Maintainer identityverified namespace with website, no repo4/10

Findings (2)

  • highWrite-action tools reachable without authenticationauth.open-write
  • lowNo source repository listedmaint.no-repo
Overall 60/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

Install directly

claude mcp add --transport http tilwhen https://mcp.tilwhen.com/mcp
Add to Cursor

tilwhen date engine: common questions

Is tilwhen date engine MCP server safe?
With care: it is graded C, so read the findings first (60/100). Read the tilwhen date engine safety report
How do I install tilwhen date engine?
It runs remotely at mcp.tilwhen.com. Add it to Claude Code, Claude Desktop or Cursor with the snippets above, or call it through the mcp.market gateway without installing anything.
Does tilwhen date engine need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is tilwhen date engine maintained?
The latest release is v1.0.1.
Is tilwhen date engine up?
100% of our last 6 checks got an answer. We check remote servers about four times a day.

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