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euroref — European government reference data

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get_public_holidays

Read-onlyIdempotent

FREE. Official public-holiday calendar for a supported country, including gazetted movable holidays, with the official government source cited. Some countries also carry sub-national calendars (e.g. the German Laender): the subdivisions field lists them, and passing subdivision (ISO 3166-2, e.g. 'DE-BY') returns the national calendar merged with that region's statutory days.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
countryYesISO country code
subdivisionNoOptional ISO 3166-2 region code (e.g. 'DE-BY'). Returns national + that region's statutory holidays, each tagged national/regional. Omit for the national calendar.

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
unitNo
errorNoPresent on a free refusal or error; no charge
notesNo
staleNo
valueNo
seriesNo
sourceNo
countryNo
no_chargeNo
price_usdNo
confidenceNo
disclaimerNo
how_to_payNo
bind_seriesNo
explanationNo
label_basisNoInputs and the rule ids that produced the two labels
subdivisionNo
x_next_bindNo
http_endpointNo
coverage_labelNoHow much of the question is covered: ready = complete; partial = held with a disclosed limitation or default; gap = no number served. Rules at /label-rules
effective_fromNo
last_confirmedNo
confidence_labelNoEvidence verdict derived from source type, verification age and the stale flag (answers: the weakest series read). Rules at /label-rules
payment_requiredNotrue when the call needs payment; how_to_pay explains x402 or card
available_subdivisionsNo

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed4 schema fields changed
    • removedOutput schema / properties / label_basis / properties / source_type / anyOf
      Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
    • addedOutput schema / properties / label_basis / properties / source_type / type
      Added value: +[
+  "string",
+  "null"
+]
    • removedOutput schema / properties / label_basis / properties / verification_age_days / anyOf
      Removed value: -[
-  {
-    "type": "number"
-  },
-  {
-    "type": "null"
-  }
-]
    • addedOutput schema / properties / label_basis / properties / verification_age_days / type
      Added value: +[
+  "number",
+  "null"
+]
  2. Changed3 schema fields changed
    • addedOutput schema / properties / confidence_label
      Added value: +{
+  "description": "Evidence verdict derived from source type, verification age and the stale flag (answers: the weakest series read). Rules at /label-rules",
+  "enum": [
+    "high",
+    "medium",
+    "low"
+  ],
+  "type": "string"
+}
    • addedOutput schema / properties / coverage_label
      Added value: +{
+  "description": "How much of the question is covered: ready = complete; partial = held with a disclosed limitation or default; gap = no number served. Rules at /label-rules",
+  "enum": [
+    "ready",
+    "partial",
+    "gap"
+  ],
+  "type": "string"
+}
    • addedOutput schema / properties / label_basis
      Added value: +{
+  "additionalProperties": {},
+  "description": "Inputs and the rule ids that produced the two labels",
+  "properties": {
+    "confidence_reasons": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "coverage_reasons": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "inputs": {
+      "items": {},
+      "type": "array"
+    },
+    "rules": {
+      "type": "string"
+    },
+    "rules_version": {
+      "type": "string"
+    },
+    "source_type": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "stale": {
+      "type": "boolean"
+    },
+    "verification_age_days": {
+      "anyOf": [
+        {
+          "type": "number"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    }
+  },
+  "type": "object"
+}
  3. Changed1 schema field changed
    • changedOutput schema / (root)
      Previous value: -nullNew value: +{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "additionalProperties": {},
+  "description": "Holiday calendar series with cited source; with subdivision, merged national+regional days",
+  "properties": {
+    "available_subdivisions": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "bind_series": {},
+    "confidence": {},
+    "country": {
+      "type": "string"
+    },
+    "disclaimer": {},
+    "effective_from": {},
+    "error": {
+      "description": "Present on a free refusal or error; no charge"
+    },
+    "explanation": {},
+    "how_to_pay": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "http_endpoint": {
+      "type": "string"
+    },
+    "last_confirmed": {},
+    "no_charge": {
+      "type": "boolean"
+    },
+    "notes": {},
+    "payment_required": {
+      "description": "true when the call needs payment; how_to_pay explains x402 or card",
+      "type": "boolean"
+    },
+    "price_usd": {
+      "type": "number"
+    },
+    "series": {
+      "type": "string"
+    },
+    "source": {},
+    "stale": {
+      "type": "boolean"
+    },
+    "subdivision": {},
+    "unit": {},
+    "value": {},
+    "x_next_bind": {}
+  },
+  "type": "object"
+}
  4. Changed1 schema field changed
    • changedInput schema / properties / country / enum
      Previous value: -[
-  "at",
-  "be",
-  "bg",
-  "ch",
-  "cz",
-  "de",
-  "dk",
-  "ee",
-  "es",
-  "eu",
-  "fi",
-  "fr",
-  "gb",
-  "gr",
-  "hu",
-  "ie",
-  "is",
-  "it",
-  "lt",
-  "lv",
-  "nl",
-  "no",
-  "pl",
-  "pt",
-  "ro",
-  "rs",
-  "se",
-  "tr",
-  "ua"
-]New value: +[
+  "at",
+  "be",
+  "bg",
+  "ch",
+  "cy",
+  "cz",
+  "de",
+  "dk",
+  "ee",
+  "es",
+  "eu",
+  "fi",
+  "fr",
+  "gb",
+  "gr",
+  "hr",
+  "hu",
+  "ie",
+  "is",
+  "it",
+  "lt",
+  "lu",
+  "lv",
+  "mt",
+  "nl",
+  "no",
+  "pl",
+  "pt",
+  "ro",
+  "rs",
+  "se",
+  "si",
+  "sk",
+  "tr",
+  "ua"
+]
  5. Changed1 schema field changed
    • changedInput schema / properties / country / enum
      Previous value: -[
-  "at",
-  "be",
-  "bg",
-  "ch",
-  "cz",
-  "de",
-  "dk",
-  "es",
-  "eu",
-  "fi",
-  "fr",
-  "gb",
-  "gr",
-  "hu",
-  "ie",
-  "is",
-  "it",
-  "nl",
-  "no",
-  "pl",
-  "pt",
-  "ro",
-  "rs",
-  "se",
-  "tr",
-  "ua"
-]New value: +[
+  "at",
+  "be",
+  "bg",
+  "ch",
+  "cz",
+  "de",
+  "dk",
+  "ee",
+  "es",
+  "eu",
+  "fi",
+  "fr",
+  "gb",
+  "gr",
+  "hu",
+  "ie",
+  "is",
+  "it",
+  "lt",
+  "lv",
+  "nl",
+  "no",
+  "pl",
+  "pt",
+  "ro",
+  "rs",
+  "se",
+  "tr",
+  "ua"
+]
  6. Changed1 schema field changed
    • addedInput schema / properties / subdivision
      Added value: +{
+  "description": "Optional ISO 3166-2 region code (e.g. 'DE-BY'). Returns national + that region's statutory holidays, each tagged national/regional. Omit for the national calendar.",
+  "type": "string"
+}
  7. Changed1 schema field changed
    • changedInput schema / properties / country / enum
      Previous value: -[
-  "at",
-  "be",
-  "bg",
-  "ch",
-  "cz",
-  "de",
-  "dk",
-  "es",
-  "fi",
-  "fr",
-  "gb",
-  "gr",
-  "hu",
-  "ie",
-  "is",
-  "it",
-  "nl",
-  "no",
-  "pl",
-  "pt",
-  "ro",
-  "rs",
-  "se",
-  "tr",
-  "ua"
-]New value: +[
+  "at",
+  "be",
+  "bg",
+  "ch",
+  "cz",
+  "de",
+  "dk",
+  "es",
+  "eu",
+  "fi",
+  "fr",
+  "gb",
+  "gr",
+  "hu",
+  "ie",
+  "is",
+  "it",
+  "nl",
+  "no",
+  "pl",
+  "pt",
+  "ro",
+  "rs",
+  "se",
+  "tr",
+  "ua"
+]
  8. Changed1 schema field changed
    • changedInput schema / properties / country / enum
      Previous value: -[
-  "at",
-  "be",
-  "ch",
-  "cz",
-  "de",
-  "dk",
-  "es",
-  "fi",
-  "fr",
-  "gb",
-  "gr",
-  "hu",
-  "ie",
-  "it",
-  "nl",
-  "no",
-  "pl",
-  "pt",
-  "ro",
-  "rs",
-  "se",
-  "tr"
-]New value: +[
+  "at",
+  "be",
+  "bg",
+  "ch",
+  "cz",
+  "de",
+  "dk",
+  "es",
+  "fi",
+  "fr",
+  "gb",
+  "gr",
+  "hu",
+  "ie",
+  "is",
+  "it",
+  "nl",
+  "no",
+  "pl",
+  "pt",
+  "ro",
+  "rs",
+  "se",
+  "tr",
+  "ua"
+]
  9. Changed1 schema field changed
    • changedInput schema / properties / country / enum
      Previous value: -[
-  "at",
-  "be",
-  "ch",
-  "cz",
-  "de",
-  "dk",
-  "es",
-  "fi",
-  "fr",
-  "gb",
-  "gr",
-  "hu",
-  "ie",
-  "it",
-  "nl",
-  "no",
-  "pl",
-  "pt",
-  "ro",
-  "se",
-  "tr"
-]New value: +[
+  "at",
+  "be",
+  "ch",
+  "cz",
+  "de",
+  "dk",
+  "es",
+  "fi",
+  "fr",
+  "gb",
+  "gr",
+  "hu",
+  "ie",
+  "it",
+  "nl",
+  "no",
+  "pl",
+  "pt",
+  "ro",
+  "rs",
+  "se",
+  "tr"
+]
  10. Changed1 schema field changed
    • changedInput schema / properties / country / enum
      Previous value: -[
-  "at",
-  "be",
-  "de",
-  "dk",
-  "es",
-  "fr",
-  "gb",
-  "ie",
-  "it",
-  "nl",
-  "pl",
-  "se"
-]New value: +[
+  "at",
+  "be",
+  "ch",
+  "cz",
+  "de",
+  "dk",
+  "es",
+  "fi",
+  "fr",
+  "gb",
+  "gr",
+  "hu",
+  "ie",
+  "it",
+  "nl",
+  "no",
+  "pl",
+  "pt",
+  "ro",
+  "se",
+  "tr"
+]
  11. Changed1 schema field changed
    • changedInput schema / properties / country / enum
      Previous value: -[
-  "de",
-  "es",
-  "fr",
-  "gb",
-  "it",
-  "nl"
-]New value: +[
+  "at",
+  "be",
+  "de",
+  "dk",
+  "es",
+  "fr",
+  "gb",
+  "ie",
+  "it",
+  "nl",
+  "pl",
+  "se"
+]
  12. First observed

TDQS

A3.7/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint, idempotentHint, openWorldHint, and destructiveHint=false, so the safety profile is covered. The description adds useful context beyond them: the tool is free, results carry an official government source citation, and subdivision requests return a merged national+regional result set.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two tight sentences with the cost and core purpose front-loaded, then the subdivision nuance. No filler, though the subdivision explanation is dense enough that it slightly crowds the second sentence.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

With an output schema present, return values need no explanation, and the description covers cost, scope, source citation, and the optional regional behavior. The only gap is the absence of explicit routing against nearby calendar/business-day siblings.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so both parameters are already documented in the schema. The description reinforces the subdivision merge semantics ('national calendar merged with that region's statutory days') and mentions the subdivisions field, but adds little beyond what the schema and output schema already convey.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb+resource ('Official public-holiday calendar for a supported country') and adds scope detail (gazetted movable holidays, cited government source). It does not name the obvious sibling get_public_holidays_worldwide, so the single-country vs worldwide distinction is only implicit.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explains the subdivision behavior and that omitting it yields the national calendar, which implies when to use the optional parameter. But it never states when to prefer this tool over get_public_holidays_worldwide, is_business_day, or count_working_days, leaving sibling routing to inference.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

All euroref — European government reference data toolsInspect
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