# Firefox Ci Test Coverage By Platform

> Use when querying Firefox CI test health by platform: tier classification, skip rates, coverage gaps, pool comparisons, green-up planning, platform decommissioning, test suite analysis, or CI infrastructure planning.

- **Type:** Skill
- **Install:** `agentstack add skill-mozilla-platform-ops-agent-skills-firefox-ci-test-coverage-by-platform`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [mozilla-platform-ops](https://agentstack.voostack.com/s/mozilla-platform-ops)
- **Installs:** 0
- **Category:** [Developer Tools](https://agentstack.voostack.com/c/developer-tools)
- **Latest version:** 0.1.0
- **License:** MPL-2.0
- **Upstream author:** [mozilla-platform-ops](https://github.com/mozilla-platform-ops)
- **Source:** https://github.com/mozilla-platform-ops/agent-skills/tree/main/skills/firefox-ci-test-coverage-by-platform
- **Website:** https://agentskills.io/home

## Install

```sh
agentstack add skill-mozilla-platform-ops-agent-skills-firefox-ci-test-coverage-by-platform
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# Firefox CI Test Coverage by Platform

Use `query.py` first; it reads snapshots from `assets/`.

```bash
python3 ${CLAUDE_SKILL_DIR}/scripts/query.py  [args]
```

## USE FOR:

Tier lookup, skip rates, coverage gaps, pool comparisons, green-up planning, platform retirement, and suite coverage analysis.

## DO NOT USE FOR:

Live Taskcluster job status, try pushes, or refreshing stale snapshots unless the user asks.

## Commands

Use `summary`, `suite `, `platform `, `os `, `risk`, `skipped-everywhere`, `compare  `, or `search `.

## Examples

- "What's tier 1 on Windows 11?" Run `platform windows11` or `os windows`.
- "Tell me about xpcshell." Run `suite xpcshell`.
- "Riskiest coverage gaps?" Run `risk`.
- "Can we retire this pool?" Run `compare  `.

## Tier Model

Tier precedence: variant overrides, kind YAML tier settings, then the `handle_tier()` platform default. The same suite can have different tiers by platform.

## Data Freshness

Check each snapshot's `snapshot_date` before migration or green-up decisions. Refresh stale data with [references/refresh.md](references/refresh.md).

## Troubleshooting

- Missing snapshots: confirm `assets/tier_matrix.json`, `assets/tier_skip_crossref.json`, and `assets/skip_totals.json`.
- Stale data: refresh before release or pool-retirement decisions.
- No match: run `search ` for the canonical name.
- Refresh import errors: install PyYAML, then rerun `scripts/refresh.py`.

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [mozilla-platform-ops](https://github.com/mozilla-platform-ops)
- **Source:** [mozilla-platform-ops/agent-skills](https://github.com/mozilla-platform-ops/agent-skills)
- **License:** MPL-2.0
- **Homepage:** https://agentskills.io/home

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-mozilla-platform-ops-agent-skills-firefox-ci-test-coverage-by-platform
- Seller: https://agentstack.voostack.com/s/mozilla-platform-ops
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.