cover

cover is a skill for Claude Code from Rootly-AI-Labs/rootly-claude-plugin. It costs 41 tokens per session (848 once invoked), scanned A, original, Apache-2.0.

A tool for volunteering to take another person’s upcoming on-call shift. On-call means being responsible for responding to technical problems during a scheduled period.

In plain words
What is it for?
Use it to find another person’s future shifts on your teams and offer to cover a selected shift.
Why use it?
It shows eligible shifts and prevents the change from happening until you explicitly confirm it.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the rootly-claude-plugin plugin — 17 skills, 3 agents, 2 hooks, 1 MCP server shipped together

Good fit Use it to find another person’s future shifts on your teams and offer to cover a selected shift.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/rootly-ai-labs/rootly-claude-plugin/cover
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 Rootly-AI-Labs/rootly-claude-plugin --skill cover
Clone the repo
git clone --depth 1 https://github.com/Rootly-AI-Labs/rootly-claude-plugin

Made for: Claude Code.

Or install rootly-claude-plugin, the plugin that ships this one along with the rest of its 17 skills, 3 agents, 2 hooks, 1 MCP server.

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.

agentmods badge for cover

README.md
[![agentmods](https://agentmods.dev/badge/skills/rootly-ai-labs/rootly-claude-plugin/cover.svg)](https://agentmods.dev/skills/rootly-ai-labs/rootly-claude-plugin/cover)
Your own site
<a href="https://agentmods.dev/skills/rootly-ai-labs/rootly-claude-plugin/cover"><img src="https://agentmods.dev/badge/skills/rootly-ai-labs/rootly-claude-plugin/cover.svg" alt="Measured on agentmods" height="20"></a>
Per session 41 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 848 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 original 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00041 $0.00848
Opus 5 $0.00020 $0.00424
Sonnet 5 $0.00008 $0.00170
Haiku 4.5 $0.00004 $0.00085

Measured 8d ago against content hash 9437fb920231, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

cover 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 8d 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.

skills/cover/SKILL.md · 94 lines

How it starts

The opening of the file, as written. The whole thing — 94 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Offer to Cover a Shift

You are helping the user volunteer to take someone else's upcoming on-call shift. This is the inverse of /rootly:swap. Write action — explicit confirmation required.

Workflow

1. Identify the user

Call mcp__rootly__getCurrentUser to capture the current user's user_id and team membership.

2. Determine the scope

Parse $ARGUMENTS:

  • Empty → show the user's own teams' upcoming shifts (next 14 days), filtered to shifts assigned to other people.
  • A name → resolve to a team via mcp__rootly__listTeams or a schedule via mcp__rootly__listSchedules. If multiple matches, list them and ask.

3. Pull candidate shifts

Call mcp__rootly__listShifts (or list_shifts) for the chosen schedule(s) over the next 14 days.

Filter:

  • Exclude shifts already assigned to the current user.
  • Exclude shifts that have already started or are in the past.

4. Present the list

## Upcoming shifts you could cover

| # | Schedule | When | Currently | Length |
|---|---|---|---|---|
| 1 | [name] | [start] → [end] | [user name] | [duration] |
| 2 | [name] | [start] → [end] | [user name] | [duration] |
[max 10]

Reply with the shift number you'd like to cover, or `none` to cancel.

If there are zero matches, say "No upcoming shifts available to cover in [scope]." and stop.

5. On user selection

When the user picks a number:

  1. Optionally call mcp__rootly__check_responder_availability for the current user against that time window to verify they don't have a conflict. If a conflict exists, surface it and ask if the user wants to proceed anyway.
  2. Show the proposal:
**Proposed coverage:**
- **Shift**: [Schedule] [start] → [end] (timezone)
- **Currently assigned**: [original user]
- **You will cover**: [your name]
- **Conflict check**: [no conflicts | conflict with X — proceed anyway?]

Confirm to create the override? (yes / no)
  1. Wait for explicit yes. Anything else → cancel.

6. On confirmation

Call mcp__rootly__createOverrideShift with:

  • schedule_id of the target shift's schedule
  • data.type = "shifts"
  • data.attributes.starts_at and data.attributes.ends_at matching the shift window
  • data.attributes.user_id = current user's integer Rootly user ID

Read the full file on GitHub · 94 lines

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.

  1. 8d ago First seen · 94 lines · 41 tokens per session scan A 9437fb920231

Subscribe to this mod's changes

cover is a skill published in the GitHub repository Rootly-AI-Labs/rootly-claude-plugin (1 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 41 tokens to every session and 848 once invoked, about $0.0002 per session on Opus 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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