mozilla

Use when asked to create, draft, file, or write a Jira ticket for the FxA ai-fixme pipeline, or to turn a request, bug, Slack thread, or idea into an FXA ticket labelled ai-fixme. Triggers include "make an ai-fixme ticket", "file this for ai-fixme", "draft a…

Fast single-pass FXA-specific commit review covering security, conventions, logic/bugs, tests, and migrations. No subagents — runs directly in the main context.

Thorough FXA-specific commit review using parallel specialist agents. Covers security, TypeScript, logic/bugs, test quality, and architecture. Agents explore call sites, git history, and monorepo conventions.

Use when a bug fix or UI change on the current FxA branch needs proof that it works, or when a user flow or component state should be recorded as video or screenshots and attached to the pull request. Triggers include "verify the fix", "prove FXA-N is fixed",…

Assess and triage Mozilla FxA (mozilla/fxa) dependency security in one pass. Part 1 — walk every open Dependabot alert, read BLEnder's recorded verdict (from the investigated/<repo>/<n> tag in mozilla/blender), and recommend a disposition (dismiss / bump /…

Generates a daily FxA triage summary. Queries Jira, GitHub, Bugzilla, and optionally Sentry, then outputs a Slack-ready update with detailed analysis. Use when starting triage duties or preparing the daily triage post. Also offers a dependency alert & bump PR…

Keeps the public FxA docs (mozilla/ecosystem-platform, published at mozilla.github.io/ecosystem-platform) consistent with reality by checking the last 24 hours of activity in mozilla/fxa and the FXA Jira project, then opening or updating a single docs PR.…

Boots a branch's FxA stack in CircleCI with `yarn pr-debug`, tunnels it to localhost with `yarn pr-debug --tunnel`, and reports when it is up. Given a description of what to check, also writes and runs a throwaway Playwright test against it in a headed local…

Use this skill to audit tables for missing column descriptions and classify each missing column into the correct base schema promotion target (global.yaml, app_<product>.yaml, or <dataset_name>.yaml). Accepts a dataset name and an optional table filter — omit…

Use this skill when looking up, auditing, or managing column descriptions from global, application-specific, and dataset-specific column definition YAML files (bigquery_etl/schema/global.yaml, bigquery_etl/schema/app_<name>.yaml, and…

Use this skill when the prompt asks to create, open, or submit a pull request in the bigquery-etl repository. Handles branch creation, staging, committing, pushing, and opening a draft PR with a structured description. Triggered by phrases like "create a PR",…

Use this skill when looking up field descriptions for Mozilla Glean telemetry tables (tables ending in _live or _stable, e.g. <app>_stable.<ping>_v1). Fetches descriptions from the Glean Dictionary (dictionary.telemetry.mozilla.org) using WebFetch with…

Use this skill when creating or updating DAG configurations (dags.yaml), schema.yaml, and metadata.yaml files for BigQuery tables. Handles creating new DAGs when needed and coordinates test updates when queries are modified (invokes sql-test-generator as…

Use this skill to enrich schema.yaml files for BigQuery tables in the bigquery-etl repository. Handles creating schema.yaml when it doesn't exist, finding and filling missing column descriptions (from base schemas, upstream source schema, query context, or…

Use this skill to create or update README.md files for BigQuery ETL tables in the mozilla bigquery-etl repository. Follows layout conventions derived from comparing README files across the repo — rich style with emoji headings, Mermaid data flow diagram,…

ALWAYS use this skill when users ask to "create a skill", "make a skill for...", "add a new skill", or similar requests. This skill guides the creation of effective skills in the bigquery-etl repository that extend Claude's capabilities with specialized…

Analyze a Firefox log file (MOZ_LOG output, console or test log) for problems: crashes, assertions, IPC errors and subsystem failures, with a timeline across processes. Bundled knowledge files add the signals of specific areas.

Analyze a Firefox Profiler capture (share.firefox.dev or profiler.firefox.com/public links) for performance issues (jank, long tasks, hangs, high CPU, media playback), producing a structured findings report that other skills can consume. Triggers on "analyze…

Verify specification compliance for web-exposed features (HTML, DOM, CSS, Fetch, media and other web specs) and codec/format/protocol internals

Diagnoses backend problems behind Firefox Home New Tab (HNT), across Merino, the curated corpus, admin-api, the article crawler, Picture of the Day and the daily crossword. Use when a Sentry alert fires on one of those services, an editor reports something…

Architecture, conventions and pitfalls of the Firefox Windows installers (stub, full, helper/uninstaller, MSI, MSIX) built with NSIS. Use when reading, writing, reviewing or debugging .nsi/.nsh files, anything under browser/installer/windows/ or…

Interpreting and querying Firefox's `captcha_detection.*` Glean metrics and the `captcha-detection` custom ping (BigQuery `mozdata.firefox_desktop.captcha_detection`, `mozdata.fenix.captcha_detection`). Use when analyzing captcha prevalence or solve / pass /…

Run the end-to-end loop for landing a legacy Fenix UI test converted onto the ui/efficiency framework: convert → file a Bugzilla bug → commit with the real bug number → track in Jira (conversion vs. enablement) → open a moz-phab review. Use this when a…

Author or convert Fenix Android UI tests onto the ui/efficiency framework. Use this whenever the task involves writing a new efficiency UI test, converting/porting a legacy ui/ (robot-based) test onto the efficiency framework, or building what a test needs —…

Reference for constructing revision-pinned source, spec, and bug permalinks (Searchfox, GitHub, GitLab, googlesource, Codeberg, Chromium, FFmpeg, Bugzilla, specs). Use when citing code, specs, or bugs in analysis or reports and you need stable,…

File a Bugzilla bug directly via the BMO REST API with full power the prefilled enter_bug.cgi form can't do — create the bug AND upload one or more attachments (logs, patches, testcases, screenshots) AND set bug-/attachment-level flags (needinfo?, review?,…

Help prepare a Firefox security approval request by analyzing local commits/changes, deciding whether sec-approval is required at all (only parent-process vulnerabilities triggerable from a content process), and drafting answers to the sec-approval…

Help prepare a Firefox uplift approval request (Beta, Release, and/or ESR) by checking whether patches are already on the bug, auditing sanitization once for sec-* bugs, and drafting the approval comment per…

Firefox bug triage assistant for media, web conferencing, and graphics related issues.

Generate technical documentation for a specified technology domain with optional customization.

Generate or modify Firefox mozconfig build configuration files. Use when the user asks to create a mozconfig, configure a build, set up ASan/TSan/debug builds, or match try server configurations.

Firefox bug triage assistant for determining if a bug severity rating of S1 or S2 is warranted, and to gather information for triaging and prioritization.

Risk-review the pending uplift requests from the dashboard's "Uplift requested" check (<channel>.uplift-requested, on the Beta, Release and ESR tabs) — for each bug, read the uplift patch itself (the branch-specific Phabricator revision, which can differ from…

Audit the dashboard's Beta check "Bugs pending affected versions" (beta.sec-pending-affected) — bugs fixed on Nightly whose Beta, Release or ESR status is still unset — and work out from the code alone, for each bug and each branch, whether that branch is…

Review a whole Firefox Nightly development cycle at the end of the cycle (around merge day). Summarizes what landed, which products, components and source areas changed most, the risks and benefits the release carries, and which specific bugs to monitor in…

Post-release Reddit triage for a Firefox release. Finds the r/firefox "Firefox NNN released" thread and recent subreddit posts (plus related Firefox subreddits when needed), pulls comment threads, extracts user-reported problems, de-dupes and groups them by…

Scan what landed on firefox-main over a window (a day, a week, or a whole Nightly cycle) and surface the changes worth asking a developer about for a release note — with bug numbers, whether the change is gated and how, feature rollups across many bugs, and a…

Audit the dashboard's Beta check "Carry over regressions, disabled in previous version" (beta.carryover-disabled-previous) — open regressions affecting the current Beta whose previous version is marked disabled, meaning the regressing change was not enabled…

Audit the dashboard's "Release Notes Nightly+" check (nightly.relnote-nightly-plus) — bugs whose release note is Nightly-only because the change landed behind a Nightly-only pref — and report which are still Nightly-only, which are no longer Nightly-only (and…

Review draft Firefox release notes for style, tone, scoping, and audience-fit against the Mozilla Release Management Release Notes Style Guide. Use when the user wants release notes checked/edited before publishing — they may paste the notes, point to an…

This skill should be used when the user asks about browser automation, testing web pages, extracting content, filling forms, taking screenshots, or monitoring console/network activity. Activates for E2E testing, form automation, browsing tasks, or debugging…

Show console errors and failed network requests

Navigate Firefox to a URL and take a DOM snapshot for interaction

Take a screenshot of a URL or the current page

Find and fix why a website is slow by capturing and analyzing a Firefox performance profile, or by analyzing a profile the user already has (a saved file or a profiler.firefox.com share link). Use for slow page loads, janky scrolling or animation, slow…

Diagnose Firefox DevTools MCP setup issues. Activate when the firefox-devtools-mcp plugin fails to connect, its tools are not available, or the user reports Firefox DevTools not working in Cowork.

Drafts and reviews the non-code parts of an addons.mozilla.org (AMO) submission for a Firefox extension -- the listing name/summary/description (checked against Mozilla's "No Surprises" and Content policy clauses), and the "Notes for Reviewers" text (testing…

Helps a Firefox extension developer classify what data their add-on collects/transmits into Mozilla's data_collection_permissions taxonomy (personallyIdentifyingInfo, healthInfo, financialAndPaymentInfo, authenticationInfo, personalCommunications,…

Scaffolds a new manifest.json for a Firefox WebExtension, or lints an existing one for technical/schema problems (wrong shape for Manifest V2 vs V3, missing browser_specific_settings.gecko.id, invalid content_security_policy or web_accessible_resources shape,…

Scans a Firefox WebExtension/add-on codebase for likely violations of Mozilla's Add-on Policies — permissions scope, remote code loading, CSP relaxation, data collection & consent (manifest data_collection_permissions), monetization rules (ads, affiliate…

Cut a new stmo-cli release: curate the changelog, bump the version, open the release PR, tag it, let CI publish the GitHub Release with binaries, then publish to crates.io by hand. Use when the user asks to release, cut a release, ship a new version, or…

Manage Redash queries and dashboards on Mozilla's STMO (sql.telemetry.mozilla.org) using stmo-cli. Use when the user wants to explore telemetry data on STMO, write, deploy, or execute Redash queries, manage dashboards, or discover data sources. Also trigger…

Sync the canonical stmo skill (.agents/skills/stmo/SKILL.md) with a stmo-cli change and prepare delivery to the mozilla-firefox/firefox repo via moz-phab. Use after a stmo-cli change (new command, flag, or workflow behavior) that the firefox-facing skill…

Runs a read-only SQL query against the Customer Experience tables (moz-fx-data-shared-prod.customer_experience_derived) and returns results as a formatted table. Use when the question requires counts, aggregations, rankings, or distributions — not when it…

Runs VECTOR_SEARCH against the Customer Experience retrieval indexes (moz-fx-data-shared-prod.customer_experience_derived) and returns the top-K most semantically similar documents. Use after the embed skill has produced an embedding file.

Receives a text question and returns its embedding vector using gemini-embedding-001 via Vertex AI. Use this when you need a semantic embedding for a question — for downstream vector search, similarity comparison, or passing to another tool.

Run Base Load Engineer checks for the current day and produce a prioritized action list

Run pre-commit checks, review PR checklist, and draft a commit message for Relay changes

Audit and update dependencies across Python, npm, and pre-commit ecosystems

Create a new Wagtail CMS block

Audit and update npm dependencies

Write and maintain an ExecPlan — a self-contained, committed Markdown design document in docs/execplans/ — for work that spans more than one session or touches several files or subsystems. Use for a refactor crossing the container/view split, a tooling or…