Compute a deadline

What it does

compute_lehota computes the last day of a Slovak civil-procedure deadline (lehota) from the facts of one electronic delivery — an elektronická doručenka under § 32 zák. č. 305/2013 Z. z. — and returns every counting step with its statutory citation.

It is a verifier, not an oracle: the arithmetic is fully deterministic (no language model, no database, no case data — the same engine LEXOMA's own deadline safety net uses), so the calling AI can check a date rather than be told one.

Like every tool in this connector, it is read-only, covers Slovak law only, and its output is informational, not legal advice.

Inputs

Name	Type	Required	Description
`ulozenie`	datetime	Yes	When the message became uložená (§ 32 ods. 1). ISO-8601 with a UTC offset — a timestamp without a timezone is refused.
`do_vlastnych_ruk`	boolean	Yes	Whether the message was addressed into the addressee's own hands (which § 32 ods. 5 regime applies).
`potvrdenie_dorucenky`	datetime	No	The doručenka confirmation timestamp, if the addressee confirmed. Only meaningful when `do_vlastnych_ruk` is `true`. Same timezone rule.
`uloznu_lehotu_dni`	int	No	The úložná lehota (§ 32 ods. 2). Default `15`; `1`–`60`.
`rule_id`	string	One of	A catalogue id for a lehota whose length the statute fixes — see The rule catalogue below.
`pocet_dni`	int	One of	A court-set lehota length in days (`1`–`365`). Give exactly one of `rule_id` / `pocet_dni`; both or neither is refused with a question.

Returns

{
  "znama_lehota": true,
  "rule_id": "csp_odvolanie",
  "pocet_dni": 15,
  "citation": "§ 362 ods. 1 CSP",
  "posledny_den": "2026-03-20",
  "kroky": [
    {
      "label": "moment doručenia",
      "hodnota": "2026-03-05",
      "citation": "§ 32 ods. 5 písm. b) bod 1 zák. č. 305/2013 Z. z. …",
      "poznamka": "potvrdené elektronickou doručenkou"
    },
    {
      "label": "prvý deň lehoty",
      "hodnota": "2026-03-06",
      "citation": "§ 121 ods. 2 CSP",
      "poznamka": "…"
    },
    {
      "label": "posledný deň lehoty",
      "hodnota": "2026-03-20",
      "citation": "§ 121 ods. 2 CSP",
      "poznamka": "…"
    }
  ],
  "rules_available": []
}

The text the calling AI sees carries the same information: the last day in bold, the numbered steps each ending with its citation, and one fixed line stating that the count assumes the electronic delivery regime of zák. č. 305/2013 and that a paper doručenka or a court-set lehota needs the advocate's own check.

Zero false greens

An unknown rule_id never produces a date. The tool returns znama_lehota: false, posledny_den: null, an empty kroky, and the catalogue of known rules in rules_available so the calling AI can retry with an id the engine actually knows — it does not pick the nearest match, and it does not guess a length.

The same discipline applies to the inputs: a timestamp without a timezone, a pocet_dni outside its bound, or a delivery dated before the holiday calendar the engine counts against (zák. č. 241/1993 Z. z.) is refused with a question, never silently normalised.

The rule catalogue

The catalogue holds lehoty whose length the statute itself fixes. Today it has three entries:

`rule_id`	Days	Citation	Description
`csp_odvolanie`	15	§ 362 ods. 1 CSP	The lehota to file an odvolanie, running from delivery of the decision.
`csp_odpor_platobny_rozkaz`	15	§ 265 ods. 1 CSP	The lehota to file an odpor against a platobný rozkaz, running from its delivery to the defendant.
`csp_staznost`	15	§ 242 CSP	The lehota to file a sťažnosť against a first-instance uznesenie issued by a court officer, running from delivery.

A court-set lehota is not a catalogue entry — pass its length as pocet_dni. Rules are added as data, each verified against the current statute text before it is trusted; the counting arithmetic (§ 121 ods. 2 and 4 CSP, § 32 ods. 5 and 9 zák. č. 305/2013) is shared by every rule and by the pocet_dni path.

The live catalogue is also served as the MCP resource lexoma://lehoty/rules (text/markdown, rendered from the engine's registry on every read), so a host can list the accepted rule_id values without spending a failed tool call on an unknown id.

Example

A decision was uložená in the advocate's electronic mailbox on Thursday 5 March 2026 at 10:00 Bratislava time, into his own hands, and he confirmed the doručenka the same afternoon. The calling AI asks compute_lehota with ulozenie: "2026-03-05T10:00:00+01:00", do_vlastnych_ruk: true, potvrdenie_dorucenky: "2026-03-05T14:30:00+01:00", rule_id: "csp_odvolanie" and gets back 2026-03-20: delivery on 5 March (§ 32 ods. 5), day 1 on 6 March (§ 121 ods. 2), day 15 on 20 March — a Friday, so no shift under § 121 ods. 4.

Had he confirmed the next morning instead, day 15 would land on Saturday 21 March and shift to Monday 23 March (§ 121 ods. 4) — and the response says so in its last step.

Notes

Deterministic — debits your monthly corpus quota (see Usage limits).
Models day-counted lehoty only (§ 121 ods. 2 and 4 CSP). Lehoty set in weeks, months or years (§ 121 ods. 3) are not computed.
Models the electronic delivery regime only. A paper doručenka is outside this tool.
Does not issue a provenance receipt, so its result cannot be passed to Verify answer's receipts input.