Install the "canary" agent skill from https://github.com/Houseofmvps/ultraship/tree/main/skills/canary into .claude/skills/canary/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "canary", then confirm the skill loads.
Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
skills CLI
$ npx skills add Houseofmvps/ultraship --skill canary -a codex
Project install goes to .agents/skills/; add -g for ~/.codex/skills/.
Install the "canary" agent skill from https://github.com/Houseofmvps/ultraship/tree/main/skills/canary into .agents/skills/canary/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "canary", then confirm the skill loads.
Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
skills CLI
$ npx skills add Houseofmvps/ultraship --skill canary -a cursor
Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.
Install the "canary" agent skill from https://github.com/Houseofmvps/ultraship/tree/main/skills/canary into .cursor/skills/canary/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "canary", then confirm the skill loads.
Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
skills CLI
$ npx skills add Houseofmvps/ultraship --skill canary -a gemini-cli
Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.
Install the "canary" agent skill from https://github.com/Houseofmvps/ultraship/tree/main/skills/canary into .gemini/skills/canary/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "canary", then confirm the skill loads.
Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
GitHub CLI
$ gh skill install Houseofmvps/ultraship canary
Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
skills CLI
$ npx skills add Houseofmvps/ultraship --skill canary -a github-copilot
Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.
Install the "canary" agent skill from https://github.com/Houseofmvps/ultraship/tree/main/skills/canary into .github/skills/canary/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "canary", then confirm the skill loads.
GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
skills CLI
$ npx skills add Houseofmvps/ultraship --skill canary -a opencode
OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
Install the "canary" agent skill from https://github.com/Houseofmvps/ultraship/tree/main/skills/canary into .opencode/skills/canary/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "canary", then confirm the skill loads.
OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
Skill name
canary
GitHub stars
123
Token cost
~1.1k tokens
SKILL.md length
440 words
Files
1
Skills in repo
28
Repo updated
First seen
Licence
MIT
At a glance
Post-deploy canary monitoring — checks site health, detects regressions, monitors for errors after deployment.
Works in 5 steps: Run Canary Checks → Analyze Results → Report → …
Tasks that involve Deployment
SKILL.md covers Process, Continuous Monitoring Loop, Integration with Other Skills and Playwright Browser Checks…
Calls node and git
What it does
Canary is an agent skill from Houseofmvps/ultraship. Post-deploy canary monitoring — checks site health, detects regressions, monitors for errors after deployment. Use after deploying to verify production is healthy.
Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in DevOps & Cloud, covering Deployment. The repository describes itself as: "ULTRASHIP" Claude Code plugin — 39 skills, 33 tools, 11 agents for ship-ready workflows: planning, review, pentesting, safety guardrails, canary monitoring, SEO/AI-readiness… The licence is MIT.
Read from SKILL.md and the folder at commit ed232cb. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
Bash
Read
Grep
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
node
git
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use git, which can reach the network depending on how they are called.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Canary loads about 1.1k tokens when it runs. Until then it costs about 43 tokens; SKILL.md has 440 words of instructions outside code blocks.
Always· name and description, kept in context so the agent knows when to use it
~43
When it runs· the whole SKILL.md, loaded when a task matches
~1.1k
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check: notes
The automated check noted patterns worth knowing about, such as sudo or a known installer.
NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
allowed-tools: Bash, Read, Grep
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
Download SKILL.mdSave it as .claude/skills/canary/SKILL.md (or your agent's skills folder).
name
canary
description
Post-deploy canary monitoring — checks site health, detects regressions, monitors for errors after deployment. Use after deploying to verify production is healthy.
allowed-tools
Bash, Read, Grep
argument-hint
<production-url>
Post-Deploy Canary Monitor
After every deploy, canary monitoring verifies your production site is healthy. It checks HTTP status, response time, error patterns, and compares against a baseline to detect regressions.
Announce at start: "I'm running post-deploy canary monitoring."
This runs 3 health checks with 2-second intervals. Options:
--checks N — number of checks to run (default: 3)
--interval S — seconds between checks (default: 2)
--baseline <file> — path to baseline file for regression comparison
Step 2: Analyze Results
The canary monitor returns a health status:
Status
Meaning
Action
healthy
All checks pass, no regressions
Deploy succeeded
degraded
Site is up but has error patterns or issues
Investigate the specific issues
regression_detected
Performance or behavior regressed from baseline
Compare with baseline, consider rollback
critical_regression
Major regression (status code change, 3x slower)
Rollback immediately
down
Site is unreachable or returning errors
Rollback immediately, use /rescue
Step 3: Report
Present the results clearly:
+===========================================+
| C A N A R Y R E P O R T |
+===========================================+
| URL savemrr.co |
| Status ✓ HEALTHY |
| Response Time 234ms (avg) |
| Checks 3/3 passed |
| Regressions None |
+===========================================+
If issues are found, show them with severity and recommended action.
Step 4: If Unhealthy
If the canary detects problems:
If a Sentry MCP server is connected (check your available tools for sentry), confirm the regression against live error data: compare the error/issue rate since this deploy to the prior baseline window. A post-deploy spike in a new issue is hard confirmation that the deploy caused it — and the stack trace tells you exactly what to roll back or fix. Distinguish a real regression from background noise this way before recommending a rollback.
degraded — Show the specific error patterns found. Check if they're pre-existing or new.
regression_detected — Show the before/after comparison. If response time regressed >50%, investigate.
critical_regression or down — Recommend immediate rollback:bash
git revert HEAD --no-edit && git push
Then use /rescue for full incident diagnosis.
Show full SKILL.md (153 more words)Show less
Step 5: Save Baseline
When the site is healthy, the canary automatically saves a baseline to .ultraship/canary/baseline.json. Future canary runs compare against this baseline to detect regressions.
Canary next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
Packages a locally built GreptimeDB debug binary into a development-only Docker image for local-cluster testing, with an optional push to a dev registry.
Installs, checks and troubleshoots the KubeSphere ServiceMesh extension (Istio, Kiali, Jaeger), including grayscale release, sidecar injection, topology and tracing issues.
A skill your agent uses when starting any conversation - establishes how to find and use skills, requiring Skill tool invocation before ANY response including clarifying questions
Post-deploy canary monitoring — checks site health, detects regressions, monitors for errors after deployment. Canary is an agent skill from Houseofmvps/ultraship. Post-deploy canary monitoring — checks site health, detects regressions, monitors for errors after deployment.
When should I use Canary?
Canary fits situations like: tasks that involve Deployment.
How do I install Canary in Claude Code?
Run `npx skills add Houseofmvps/ultraship --skill canary -a claude-code`. Or copy the skill folder (skills/canary in Houseofmvps/ultraship) into .claude/skills/canary in your project. Claude Code loads it when a task matches its description.
How do I install Canary in Codex?
Run `npx skills add Houseofmvps/ultraship --skill canary -a codex`. Or copy the skill folder (skills/canary in Houseofmvps/ultraship) into .agents/skills/canary in your project. Codex loads it when a task matches its description.
Can I use Canary in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Houseofmvps/ultraship --skill canary -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/canary, .gemini/skills/canary, .github/skills/canary and .opencode/skills/canary in your project.
What does Canary need to run?
Going by SKILL.md and its folder, Canary needs the command-line tools its instructions call (node and git). Its frontmatter pre-approves these tools: Bash, Read, Grep.
Does Canary access the network?
SKILL.md contains no URLs. Its commands use git, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is Canary safe to install?
Our automated static check of SKILL.md found notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.
What licence does Canary use?
Canary is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Canary use?
About 1.1k tokens (SKILL.md is roughly 4.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Canary?
Skills that share tags, products or a category with Canary: Kubeshark Installer (kubeshark/kubeshark, 12k stars), GreptimeDB Dev Docker Image (GreptimeTeam/greptimedb, 6.7k stars), KubeSphere ServiceMesh Manager (kubesphere/kubesphere, 17k stars) and Vercel (remotion-dev/remotion, 63k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Canary?
Houseofmvps (a GitHub user) maintains it in Houseofmvps/ultraship, which has 123 GitHub stars. The repository holds 28 skills in this directory. The repository was last updated on July 8, 2026.
Source: Houseofmvps/ultraship on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.
