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 terrylica/cc-skills --skill calcom-accessgit clone --depth 1 https://github.com/terrylica/cc-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/terrylica/cc-skills/calcom-access)<a href="https://agentmods.dev/skills/terrylica/cc-skills/calcom-access"><img src="https://agentmods.dev/badge/skills/terrylica/cc-skills/calcom-access/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/terrylica/cc-skills/calcom-access"><img src="https://agentmods.dev/badge/skills/terrylica/cc-skills/calcom-access.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 | $0.00049 | $0.01582 |
| Opus 5.5 | $0.00020 | $0.00633 |
| Sonnet 5.5 | $0.00010 | $0.00316 |
| Haiku 4.5 | $0.00005 | $0.00158 |
Grade A, and why
calcom-access scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 15d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 185 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Cal.com Access
Manage Cal.com bookings and event types programmatically via Claude Code.
Self-Evolving Skill: This skill improves through use. If instructions are wrong, parameters drifted, or a workaround was needed — fix this file immediately, don't defer. Only update for real, reproducible issues.
MANDATORY PREFLIGHT (Execute Before Any Cal.com Operation)
CRITICAL: You MUST complete this preflight checklist before running any Cal.com commands. Do NOT skip steps.
Step 1: Check CLI Binary Exists
ls -la "$HOME/.claude/plugins/marketplaces/cc-skills/plugins/calcom-commander/scripts/calcom-cli/calcom" 2>/dev/null || echo "BINARY_NOT_FOUND"
If BINARY_NOT_FOUND: Build it first:
cd ~/.claude/plugins/marketplaces/cc-skills/plugins/calcom-commander/scripts/calcom-cli && bun install && bun run build
Step 2: Check CALCOM_OP_UUID Environment Variable
echo "CALCOM_OP_UUID: ${CALCOM_OP_UUID:-NOT_SET}"
If NOT_SET: You MUST run the Setup Flow below. Do NOT proceed to Cal.com commands.
Step 3: Verify 1Password Authentication
op account list 2>&1 | head -3
If error or not signed in: Inform user to run op signin first.
Step 4: Test API Connectivity
CALCOM_CLI="$HOME/.claude/plugins/marketplaces/cc-skills/plugins/calcom-commander/scripts/calcom-cli/calcom"
$CALCOM_CLI event-types list 2>&1 | head -5
Setup Flow (When CALCOM_OP_UUID is NOT_SET)
Follow these steps IN ORDER. Use AskUserQuestion at decision points.
Setup Step 1: Check 1Password CLI
command -v op && echo "OP_CLI_INSTALLED" || echo "OP_CLI_MISSING"
If OP_CLI_MISSING: Stop and inform user:
1Password CLI is required. Install with:
brew install 1password-cli
Setup Step 2: Discover Cal.com API Keys in 1Password
op item list --vault "Claude Automation" --format json 2>/dev/null | jq -r '.[] | select(.title | test("calcom|cal.com|calendar"; "i")) | "\(.id)\t\(.title)"'
What ships with it
3 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.
- 15d ago Changed 58ab644c7cc1
- 19d ago Changed dd3f7f8450c7
- 28d ago Changed · -6 lines aa4321ad16c1
- 29d ago Changed · +15 tokens per session 4649e07b0312
- 1mo ago First seen · 191 lines · 34 tokens per session scan A 6e896f9fcfd9
calcom-access is a skill published in the GitHub repository terrylica/cc-skills (0 stars, last pushed today), licensed MIT. It adds 49 tokens to every session and 1,582 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.
Other skills, from other repositories
low-code-platforms
Low-code and internal tool platforms including Retool, Supabase, Appsmith, Tooljet, n8n, and Zapier. Use when building admin panels, internal tools, workflow automations, or integrating low-code platforms with custom code.
oracle-adk
Build production agentic applications on OCI with Oracle's Agent Development Kit — multi-agent orchestration, function tools, and enterprise patterns. Use when developing agents on OCI with the Oracle ADK or integrating Oracle enterprise services into an agent.
langgraph-patterns
Production-grade agentic workflows with LangGraph — graph orchestration, state machines, human-in-the-loop, and advanced control flow. Use when building or debugging a LangGraph app, modeling agent state, or adding checkpoints and human approval steps.
nextjs
Next.js 15+ App Router development patterns including Server Components, Client Components, data fetching, layouts, and server actions. Use when creating pages, routes, layouts, components, API route handlers, server actions, loading states, error boundaries, or working with Next.js navigation and metadata.
collab
Generate collaborative editing infrastructure.
comments
Generate comment and discussion system.