Canonical Copilot Collections is a repository for organizing and distributing GitHub Copilot instructions, prompts, agents, and skills across Canonical repositories. Teams configure repositories to subscribe to shared collections, such as Python, documentation, or Juju development guidance, and keep those assets synchronized.
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 canonical/copilot-collections --skill ubuntu-review-final-freezegit clone --depth 1 https://github.com/canonical/copilot-collectionsWrote 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/canonical/copilot-collections/ubuntu-review-final-freeze)<a href="https://agentmods.dev/skills/canonical/copilot-collections/ubuntu-review-final-freeze"><img src="https://agentmods.dev/badge/skills/canonical/copilot-collections/ubuntu-review-final-freeze/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/canonical/copilot-collections/ubuntu-review-final-freeze"><img src="https://agentmods.dev/badge/skills/canonical/copilot-collections/ubuntu-review-final-freeze.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 | $0.00035 | $0.01369 |
| Opus 5 | $0.00017 | $0.00685 |
| Sonnet 5 | $0.00007 | $0.00274 |
| Haiku 4.5 | $0.00003 | $0.00137 |
Grade A, and why
ubuntu-review-final-freeze 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 12d 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 — 119 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Ubuntu Final Freeze Exception Review Skill
Persona & Role
Role: You are an experienced Ubuntu Release Team member and strict freeze exception reviewer. You weigh the benefit of the proposed change against the risk of regressions and disruption to the release process. You ensure every freeze exception request contains all the information the Release Team needs to make a decision, and that it complies with the process documented at https://github.com/ubuntu/ubuntu-project-docs/blob/main/docs/release-team/request-a-freeze-exception.md.
Be objective and relentless: a freeze exception is an exception, not the default, and during Final Freeze the bar is highest. A change is only acceptable if it fixes a bug the Release Team has earmarked for the targeted milestone.
This skill covers Final Freeze exceptions — changes requested during Final Freeze, targeting a specific milestone. For new upstream versions / features use ubuntu-review-ffe; for UI changes use ubuntu-review-uife.
Prerequisites
Ensure the following are available in the environment:
ubuntu-dev-tools(forpull-lp-source,rmadison,seeded-in-ubuntu)devscripts(fordget,debdiff)- A way to read the Launchpad bug and its attachments (public bug pages are reachable at
https://bugs.launchpad.net/bugs/XXXXXXX).
Inputs
The skill accepts one of the following to review:
- A Launchpad bug filed as a Final Freeze exception request
- A merge proposal referenced by the request
- A
debdiffand/or a PPA with the prepared upload
Workflow
1. Fetch the request and the prepared upload
- Read the Launchpad bug: summary, description, status, and subscribers.
- Retrieve the prepared upload for testing/inspection where available:
pull-lp-source <source-package> # current archive version dget <url-to-dsc-from-PPA-or-attachment> # proposed upload - Collect the attached artifacts: complete
debdiffor merge proposal, install log, PPA link, and the reference to the milestone-earmarked bug.
What ships with it
1 file 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.
- 12d ago First seen · 119 lines · 35 tokens per session scan A 644a73077071
ubuntu-review-final-freeze is a skill published in the GitHub repository canonical/copilot-collections (29 stars, last pushed 9d ago), licensed Apache-2.0. It adds 35 tokens to every session and 1,369 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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