Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add reggiechan74/cc-plugins/plugin install kids-camp-plannerWrote 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.
[](https://agentmods.dev/skills/reggiechan74/cc-plugins/add-school-calendar)<a href="https://agentmods.dev/skills/reggiechan74/cc-plugins/add-school-calendar"><img src="https://agentmods.dev/badge/skills/reggiechan74/cc-plugins/add-school-calendar/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.
<a href="https://agentmods.dev/skills/reggiechan74/cc-plugins/add-school-calendar"><img src="https://agentmods.dev/badge/skills/reggiechan74/cc-plugins/add-school-calendar.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00102 | $0.02264 |
| Opus 5 | $0.00051 | $0.01132 |
| Sonnet 5 | $0.00020 | $0.00453 |
| Haiku 4.5 | $0.00010 | $0.00226 |
Grade A, and why
Add School Calendar scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
4. If a **PDF is found**: download it using Bash (`curl -L -o`) and save to `${CLAUDE_PLUGIN_ROOT}/skills/camp-planning/references/school-calendars/pdfs/[abbreviation]/[abbreviation]-[YYYY-YYYY].pdf`, then read the PDF t How it starts
The opening of the file, as written. The whole thing — 179 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Add School Calendar
Overview
Locate research directory: Read .claude/kids-camp-planner.local.md to get the research_dir path (default: camp-research). All user data paths below are relative to this directory. The family profile is at <research_dir>/family-profile.md.
Extract school calendar data from a URL, PDF, or web search and save it as a structured reference file in the school-calendars directory. This makes the data instantly available to all planning skills (plan-summer, plan-march-break, plan-pa-days) without requiring web searches for known schools.
All planning skills use the School Calendar Lookup pattern (see below) before asking the user or searching the web. This skill is what populates the internal library that those lookups check first.
School Calendar Lookup (3-Tier)
This is the standard lookup pattern used by all planning skills in the plugin. When any skill needs school calendar data:
Tier 1: Check Internal Library
Search the plugin's pre-saved calendar data:
- Public boards:
${CLAUDE_PLUGIN_ROOT}/skills/camp-planning/references/school-calendars/public-boards/ - Private schools:
${CLAUDE_PLUGIN_ROOT}/skills/camp-planning/references/school-calendars/private-schools/
Use Glob to find files matching the school name or abbreviation. If a matching file exists and covers the required school year, use it directly. Inform the user: "Found [school] calendar data in the internal library for [year]."
If data exists but is for a different school year, inform the user and proceed to Tier 2.
Tier 2: Ask the User
If no internal data is found, ask the user: "I don't have [school name] calendar data saved. Do you have the school calendar available? You can provide:"
- A PDF file path
- A URL to the school calendar page
- Or I can search the web for it
Tier 3: Web Search
If the user doesn't have the calendar handy, conduct a web search:
- Search for "[school name] school year calendar [YYYY-YYYY]" or "[school board] PA days [YYYY-YYYY]"
- Prioritize the official school/board website - avoid third-party aggregator sites
- Ensure the correct school year is retrieved (verify dates match the expected year)
- If a PDF is found: download it using Bash (
curl -L -o) and save to${CLAUDE_PLUGIN_ROOT}/skills/camp-planning/references/school-calendars/pdfs/[abbreviation]/[abbreviation]-[YYYY-YYYY].pdf, then read the PDF to extract data - If the information is only on a webpage: extract directly to markdown (no PDF to save)
What ships with it
4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 8d ago First seen · 179 lines · 102 tokens per session scan A cac51a9dd8ec
Add School Calendar is a skill published in the GitHub repository reggiechan74/cc-plugins (7 stars, last pushed 3mo ago), licensed MIT. It adds 102 tokens to every session and 2,264 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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