acaprino/firefox-extension-dev
plugins/browser-extensions/skills/firefox-extension-dev/SKILL.md
Reference knowledge base for Firefox WebExtension development. Contains browser API reference, manifest schema, AMO publishing guide, MDN URL index, and best practices. Used by the firefox-extension-dev agent for documentation lookup. TRIGGER WHEN: building, implementing, writing, coding, creating, debugging, or publishing a Firefox/WebExtension add-on (manifest.json, browser.* APIs, AMO submission, web-ext CLI). DO NOT TRIGGER WHEN: targeting Chrome-only extensions, Safari extensions, or userscripts/bookmarklets.
$ install --global
skillsauthnpx skillsauth add acaprino/alfio-claude-plugins firefox-extension-devInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
Security Scan Results
3 of 9 scanners reported clean
Some scanners were skipped, did not run, or reported a non-clean status. Review each row below.
3
Scanners Passed
9
Scanners in report
Clean
TrivyContainer and dependency vulnerability scanner
95%
Clean
SemgrepStatic code analysis for vulnerabilities
95%
Clean
mcp-scan (Snyk)Model Context Protocol security validation
95%
Skipped
Snyk (dep)Open source security scanning
50%
Skipped
Socket.devSupply chain security analysis
50%
Skipped
VirusTotalMulti-engine malware detection
50%
Skipped
CrowdStrikeAdvanced threat intelligence
50%
Skipped
OSV-ScannerOpen Source Vulnerability database check
50%
Skipped
OWASP Dep-Check
50%
Last scanned: May 13, 2026, 4:11 AM151.6s6 files scanned
SKILL.md
- name:
- firefox-extension-dev
- description:
- >
- TRIGGER WHEN:
- building, implementing, writing, coding, creating, debugging, or publishing a Firefox/WebExtension add-on (manifest.json, browser.* APIs, AMO submission, web-ext CLI).
- DO NOT TRIGGER WHEN:
- targeting Chrome-only extensions, Safari extensions, or userscripts/bookmarklets.
Firefox Extension Development References
This skill provides reference files for the firefox-extension-dev agent. The agent handles all active development work (scaffolding, coding, debugging, publishing). These reference files serve as its knowledge base.
Reference Files
references/browser-api-reference.md- Complete list of all 51 browser.* APIs with methods, events, and permissionsreferences/manifest-schema.md- Full manifest.json key reference with MV2/MV3 examplesreferences/amo-publishing.md- AMO publishing checklist, review policies, CSP, security best practices, i18nreferences/mdn-api-urls.md- Direct MDN URL index for all browser.* APIs, manifest keys, and Extension Workshop resourcesreferences/best-practices.md- Best practices, pitfalls, and anti-patterns: JS patterns, Workers, sessions, startup, security, performance, cross-browser
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