public-holidays

public-holidays is a skill for Claude Code, Codex from JustVugg/tools-factory. It costs 37 tokens per session (480 once invoked), scanned A, original, MIT.

A skill for retrieving public-holiday data from an online API. It uses a command-line tool and returns structured JSON without requiring authentication.

In plain words
What is it for?
Use it to list available countries, retrieve holidays for Italy or the United States, find matching holiday data, and synchronize the available data.
Why use it?
It avoids manually looking up holiday dates or writing API requests yourself.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to list available countries, retrieve holidays for Italy or the United States, find matching holiday data, and synchronize the available data.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/justvugg/tools-factory/public-holidays
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add JustVugg/tools-factory --skill public-holidays
Clone the repo
git clone --depth 1 https://github.com/JustVugg/tools-factory

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for public-holidays

README.md
[![agentmods](https://agentmods.dev/badge/skills/justvugg/tools-factory/public-holidays/github.svg)](https://agentmods.dev/skills/justvugg/tools-factory/public-holidays)
Your own site
<a href="https://agentmods.dev/skills/justvugg/tools-factory/public-holidays"><img src="https://agentmods.dev/badge/skills/justvugg/tools-factory/public-holidays/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for public-holidays

Your own site · 80×15
<a href="https://agentmods.dev/skills/justvugg/tools-factory/public-holidays"><img src="https://agentmods.dev/badge/skills/justvugg/tools-factory/public-holidays.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 480 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00037 $0.00480
Opus 5 $0.00018 $0.00240
Sonnet 5 $0.00007 $0.00096
Haiku 4.5 $0.00004 $0.00048

Measured 10d ago against content hash 960fe48a6082, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

public-holidays scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

library/tools/public-holidays/skills/public-holidays/SKILL.md · 51 lines

What it actually says

public-holidays

Generated by Gutenberg. Use this skill to call the public-holidays API through the local public-holidays CLI.

When to use

  • The user asks for data exposed by public-holidays (api).
  • An agent task needs structured JSON from https://date.nager.at.
  • You need to perform a write/destructive operation on public-holidays — always preview first, run with --yes only on explicit user confirmation.

How to invoke

The skill assumes the generated CLI is on PATH (or invoke via scripts/use-go.sh run ./cmd/public-holidays from the project directory).

public-holidays operations
public-holidays call getPublicholidaysIdIt --json
public-holidays sync --json
public-holidays search "<keyword>" --json

Authentication

No authentication required.

Operations index

  • getPublicholidaysIdIt (GET /api/v3/PublicHolidays/{id}/IT) — read — GET /api/v3/PublicHolidays/{id}/IT
  • getPublicholidaysIdUs (GET /api/v3/PublicHolidays/{id}/US) — read — GET /api/v3/PublicHolidays/{id}/US
  • getAvailablecountries (GET /api/v3/AvailableCountries) — read — GET /api/v3/AvailableCountries
  • getNextpublicholidaysIt (GET /api/v3/NextPublicHolidays/IT) — read — GET /api/v3/NextPublicHolidays/IT

Output contract

  • All commands accept --json and emit machine-readable output.
  • call returns { dryRun, operation, request, response }. dryRun: true means the call was not executed (write op without --yes).
  • search returns cached records. sync populates the local SQLite cache.

Provenance

  • Schema: gutenberg.blueprint.v1
  • Generated by: gutenberg 0.3.0
  • Source spec: /tmp/public-holidays.openapi.json
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 10d ago First seen · 51 lines · 37 tokens per session scan A 960fe48a6082

Subscribe to this mod's changes

public-holidays is a skill published in the GitHub repository JustVugg/tools-factory (54 stars, last pushed 2mo ago), licensed MIT. It adds 37 tokens to every session and 480 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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