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 OneWave-AI/claude-skills --skill cowork-calendar-defraggit clone --depth 1 https://github.com/OneWave-AI/claude-skillsWrote 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/onewave-ai/claude-skills/cowork-calendar-defrag)<a href="https://agentmods.dev/skills/onewave-ai/claude-skills/cowork-calendar-defrag"><img src="https://agentmods.dev/badge/skills/onewave-ai/claude-skills/cowork-calendar-defrag/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/onewave-ai/claude-skills/cowork-calendar-defrag"><img src="https://agentmods.dev/badge/skills/onewave-ai/claude-skills/cowork-calendar-defrag.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00047 | $0.00760 |
| Opus 5.5 | $0.00019 | $0.00304 |
| Sonnet 5.5 | $0.00009 | $0.00152 |
| Haiku 4.5 | $0.00005 | $0.00076 |
Grade A, and why
cowork-calendar-defrag 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 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.
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.
How it starts
The opening of the file, as written. The whole thing — 39 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Cowork Calendar Defrag
Treat the calendar like a disk that needs defragmenting: measure what is actually there, identify waste, consolidate, and carve out contiguous space for real work. Uses the connected calendar tools (Microsoft 365 / Google Calendar) to read events; every change is proposed, and the human approves before anything is created, moved, or declined.
Workflow
- Measure. Pull the last 4 weeks and the next 2. Compute: hours in meetings per week, longest uninterrupted block per day, fragmentation score (count of gaps under 45 minutes -- too short to do real work, long enough to lose), meetings by type (recurring vs. ad hoc, internal vs. external), and after-hours creep.
- Score the recurring load. For each recurring meeting: duration x frequency x attendee count = weekly cost. Flag candidates against the classic tells -- no agenda in the invite, attendance optional-in-practice, could-be-async status updates, double-booked slots the user routinely skips. External and client meetings are measured but never flagged for cuts without explicit instruction.
- Propose the defrag. A specific plan, not principles: which recurrings to shorten (60 -> 25), consolidate (three 1:1s into office hours), make async, or leave alone; where the 2-3 weekly focus blocks go (matched to when the calendar shows the user actually has energy-adjacent free space, e.g. mornings); and which small gaps to close by nudging meetings adjacent.
- Draft the messages. For each proposed change involving other people: a short, warm, blame-free draft ("I'm consolidating my recurring syncs -- can we fold this into..."). The awkward message is the real barrier to a better calendar; remove it.
- Execute on approval. Create the focus blocks (marked busy, named for the work), send nothing -- updated invites and messages remain drafts for the human to send. Output
calendar-defrag-report.mdwith before/after metrics: meeting hours reclaimed, longest block gained.
Rules
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 · 39 lines · 47 tokens per session scan A f3c31860ab23
cowork-calendar-defrag is a skill published in the GitHub repository OneWave-AI/claude-skills (388 stars, last pushed 8d ago), licensed MIT. It adds 47 tokens to every session and 760 once invoked, about $0.0002 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 2026-08-30.
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