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backend-investigation

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 broken, or a New Tab feature looks empty, wrong, or stale. Backend only, not in-tree browser/extensions/newtab frontend work.

Quality

95%

Does it follow best practices?

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SecuritybySnyk

Low

Low-risk findings worth noting

SKILL.md
Quality
Evals
Security
Low

W011: Third-party content exposure detected (indirect prompt injection risk).

What this means

The skill exposes the agent to untrusted, user-generated content from public third-party sources, creating a risk of indirect prompt injection. This includes browsing arbitrary URLs, reading social media posts or forum comments, and analyzing content from unknown websites.

Why it was flagged

The skill workflow involves reading Sentry issues and GitHub repositories, but the prompt injection risk is evaluated as medium because it monitors outsider-submitted bug reports and Sentry alerts.

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Repository

mozilla/firefox-aidev-plugins

Path

plugins/newtab/skills/backend-investigation/SKILL.md

Audited
Security analysis
Snyk

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