A calendar and contact tool for Radicale, a self-hosted server that stores calendar and address-book data. It works with CalDAV calendars and CardDAV contacts, which are standard ways for apps to access them.

Use it to view upcoming events, create or cancel meetings, and find contacts on a Radicale server.

It lets coding tasks work with personal calendars and contacts kept on your own server. This avoids needing to manage those records through a separate calendar or contacts service.

radicale — Skill for Claude Code and Codex by dinglebear-ai/dendrite

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 dinglebear-ai/dendrite --skill radicale

Clone the repo

git clone --depth 1 https://github.com/dinglebear-ai/dendrite

Made for: Claude Code, Codex.

Or install radicale, the plugin that ships this one along with the rest of its 1 skill.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/dinglebear-ai/dendrite/radicale/github.svg)](https://agentmods.dev/skills/dinglebear-ai/dendrite/radicale)

Your own site

<a href="https://agentmods.dev/skills/dinglebear-ai/dendrite/radicale"><img src="https://agentmods.dev/badge/skills/dinglebear-ai/dendrite/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/dinglebear-ai/dendrite/radicale"><img src="https://agentmods.dev/badge/skills/dinglebear-ai/dendrite/radicale.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 112 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,289 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 unknown 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.

Model	Per session	Once invoked
Fable 5.1	$0.00112	$0.02289
Opus 5.5	$0.00045	$0.00916
Sonnet 5.5	$0.00022	$0.00458
Haiku 4.5	$0.00011	$0.00229

Measured 2mo ago against content hash 5bb9ab0f1451, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

radicale 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 2mo ago.

The scan reads SKILL.md. This mod also ships 2 executable files (load-env.sh, scripts/radicale-api.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

plugins/radicale/skills/radicale/SKILL.md · 295 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Files

What ships with it

8 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.

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.

2mo ago First seen · 295 lines · 112 tokens per session scan A 5bb9ab0f1451

Subscribe to this mod's changes

radicale is a skill published in the GitHub repository dinglebear-ai/dendrite (1 stars, last pushed 1mo ago), licensed AGPL-3.0. It adds 112 tokens to every session and 2,289 once invoked, about $0.0004 per session on Opus 5.5. 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 2026-08-31.

Claude Code Productivity agent-skills ai-agents claude codex gemini-cli

radicale next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
radicaledinglebear-ai/dendrite	Skill	1	1mo ago	AGPL-3.0	A	112	Claude Code, Codex
adhd-output-stylefcakyon/claude-codex-settings	Skill	1.2k	today	Apache-2.0	A	46	Claude Code
obsidian-todo-collectorcafe3310/public-agent-skills	Skill	256	9d ago	Apache-2.0	A	34	Claude Code, Codex
im-contact-sortercafe3310/public-agent-skills	Skill	256	9d ago	Apache-2.0	A	29	Claude Code, Codex
handoffcafe3310/public-agent-skills	Skill	256	9d ago	Apache-2.0	A	23	Claude Code
lov-organize-storagelovstudio/skills	Skill	72	4d ago	MIT	A	58	Claude Code
lov-finder-actionlovstudio/skills	Skill	72	4d ago	MIT	A	36	Claude Code