Agent-Skills.md

Agent Skills: Cal.com Access

Access Cal.com API via CLI with 1Password API key. Use when user wants to list bookings, create event types, manage schedules, or mentions cal.com access. TRIGGERS - calcom, cal.com, bookings, list bookings, event types, schedules, availability, create booking page.

UncategorizedID: terrylica/cc-skills/calcom-access

Repository

terrylica/cc-skills
terrylicaLicense: MIT
264

Install this agent skill to your local

pnpm dlx add-skill https://github.com/terrylica/cc-skills/tree/HEAD/plugins/calcom-commander/skills/calcom-access

Skill Files

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plugins/calcom-commander/skills/calcom-access/SKILL.md

Skill Metadata

Name
calcom-access
Description
Access Cal.com API via CLI with 1Password API key. Use when user wants to list bookings, create event types, manage schedules, or.

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)"'

Parse the output and proceed based on results.

Setup Step 3: User Selects API Credentials

If items found, use AskUserQuestion with discovered items.

If NO items found, guide the user:

  1. Log into the Cal.com instance (self-hosted or cal.com)
  2. Go to Settings > Developer > API Keys
  3. Generate a new API key with appropriate scopes
  4. Store in 1Password Claude Automation vault:
op item create --category "API Credential" --title "Cal.com API Key" \
  --vault "Claude Automation" \
  "credential=<api-key>" \
  "api_url=<cal.com-instance-url>"

Setup Step 4: Configure mise

After user selects an item (with UUID), use AskUserQuestion to confirm adding to .mise.local.toml:

[env]
CALCOM_OP_UUID = "<selected-uuid>"

Setup Step 5: Reload and Verify

mise trust 2>/dev/null || true
cd . && echo "CALCOM_OP_UUID after reload: ${CALCOM_OP_UUID:-NOT_SET}"

Setup Step 6: Test Connection

CALCOM_OP_UUID="${CALCOM_OP_UUID}" $HOME/.claude/plugins/marketplaces/cc-skills/plugins/calcom-commander/scripts/calcom-cli/calcom event-types list

Cal.com Commands (Only After Preflight Passes)

CALCOM_CLI="$HOME/.claude/plugins/marketplaces/cc-skills/plugins/calcom-commander/scripts/calcom-cli/calcom"

# List event types
$CALCOM_CLI event-types list

# List bookings
$CALCOM_CLI bookings list -n 10

# List bookings by status
$CALCOM_CLI bookings list --status upcoming -n 20

# Get booking details
$CALCOM_CLI bookings get <booking_id>

# Create event type
$CALCOM_CLI event-types create --title "30min Interview" --slug "interview-30" --length 30

# Update event type
$CALCOM_CLI event-types update <event_type_id> --title "Updated Title"

# List schedules (availability)
$CALCOM_CLI schedules list

# JSON output (for parsing)
$CALCOM_CLI bookings list -n 10 --json

Cal.com API v2 Reference

| Endpoint | CLI Command | Description | | ------------ | -------------------- | ------------------------- | | Event Types | event-types list | List all event types | | Event Types | event-types create | Create new event type | | Bookings | bookings list | List bookings | | Bookings | bookings get | Get booking details | | Bookings | bookings cancel | Cancel a booking | | Schedules | schedules list | List availability windows | | Schedules | schedules create | Create availability | | Availability | availability check | Check slot availability |

Environment Variables

| Variable | Required | Description | | ---------------- | -------- | ----------------------------------- | | CALCOM_OP_UUID | Yes | 1Password item UUID for API key | | CALCOM_API_URL | No | API base URL (default: self-hosted) |

References

Post-Change Checklist

  • [ ] YAML frontmatter valid (no colons in description)
  • [ ] Trigger keywords current
  • [ ] Path patterns use $HOME not hardcoded paths
  • [ ] References exist and are linked

Post-Execution Reflection

After this skill completes, reflect before closing the task:

  1. Locate yourself. — Find this SKILL.md's canonical path before editing.
  2. What failed? — Fix the instruction that caused it.
  3. What worked better than expected? — Promote to recommended practice.
  4. What drifted? — Fix any script, reference, or dependency that no longer matches reality.
  5. Log it. — Evolution-log entry with trigger, fix, and evidence.

Do NOT defer. The next invocation inherits whatever you leave behind.