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.
npx skills add jmagar/claude-homelab --skill radicalegit clone --depth 1 https://github.com/jmagar/claude-homelabWrote 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/jmagar/claude-homelab/radicale)<a href="https://agentmods.dev/skills/jmagar/claude-homelab/radicale"><img src="https://agentmods.dev/badge/skills/jmagar/claude-homelab/radicale/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/jmagar/claude-homelab/radicale"><img src="https://agentmods.dev/badge/skills/jmagar/claude-homelab/radicale.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 | $0.00147 | $0.03101 |
| Opus 5.5 | $0.00059 | $0.01240 |
| Sonnet 5.5 | $0.00029 | $0.00620 |
| Haiku 4.5 | $0.00015 | $0.00310 |
Grade B, and why
radicale scanned grade B 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 1mo 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.
Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
- Set permissions: `chmod 600 ~/.claude-homelab/.env` How it starts
The opening of the file, as written. The whole thing — 395 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Radicale CalDAV/CardDAV Management
⚠️ MANDATORY SKILL INVOCATION ⚠️
YOU MUST invoke this skill (NOT optional) when the user mentions ANY of these triggers:
- "list my calendar", "what's on my calendar", "show me my events", "calendar this week", "when is my next event"
- "add to my calendar", "create an event", "schedule event", "schedule a meeting"
- "delete an event", "cancel event", "remove event"
- "find a contact", "what's someone's email", "search my contacts", "who is"
- "add a contact", "create contact", "save contact", "save someone's phone number"
- Any mention of Radicale, CalDAV, CardDAV, calendar events, or contact management
Failure to invoke this skill when triggers occur violates your operational requirements.
Manage calendars (events) and contacts on a self-hosted Radicale server using CalDAV and CardDAV protocols.
Type: Read & Write (calendar events and contacts)
Purpose
This skill enables comprehensive calendar and contact management through a self-hosted Radicale server. It provides read and write access to:
- Calendars - List, view, create, update, and delete calendar events
- Contacts - List, search, create, update, and delete contacts in addressbooks
All operations use the Python caldav library which implements the CalDAV (RFC 4791) and CardDAV (RFC 6352) protocols.
Setup
Prerequisites
Install required Python libraries:
pip install caldav vobject icalendar
Script Permissions:
The Python script can be made executable (optional but recommended):
chmod +x ~/claude-homelab/skills/radicale/scripts/radicale-api.py
You can then run it directly:
./scripts/radicale-api.py --help
Or without executable permissions using Python:
python scripts/radicale-api.py --help
Credentials
Add to ~/.claude-homelab/.env:
RADICALE_URL="http://localhost:5232"
RADICALE_USERNAME="admin"
RADICALE_PASSWORD="password"
Security:
.envfile is gitignored (never commit credentials)- Set permissions:
chmod 600 ~/.claude-homelab/.env
What ships with it
6 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.
- 1mo ago First seen · 395 lines · 147 tokens per session scan B 55cd749f3335
radicale is a skill published in the GitHub repository jmagar/claude-homelab (87 stars, last pushed 27d ago), licensed MIT. It adds 147 tokens to every session and 3,101 once invoked, about $0.0006 per session on Opus 5.5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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