Is Key Master Safe? Trust Analysis 2026

Nerq Trust Intelligence

Is Key Master Safe?

Use Key Master with some caution. Key Master is a Firefox add-on with a Nerq Trust Score of 50.5/100 (C-), based on 3 independent data dimensions. It is below the recommended threshold of 70. Security: 90/100. Popularity: 15/100. Data sourced from addons.mozilla.org metadata, permissions analysis, and source code availability. Last updated: 2026-03-27. Machine-readable data (JSON).

Is Key Master Safe?

CAUTION — Key Master has a Nerq Trust Score of 50.5/100 (C-). It has moderate trust signals but shows some areas of concern that warrant attention. Suitable for development use — review security and maintenance signals before production deployment.

Trust Score Breakdown

Security

90

Popularity

15

Key Findings

✓Security score: 90/100 (strong)

⚠Popularity: 15/100 — Firefox Add-ons

Details

Author	Ducttape warrior
Category	firefox
Source	N/A

Key Master Across Platforms

Same developer/company in other registries:

keymaster

48/100 · npm

Safety Guide: Key Master

What is Key Master?

Key Master is a Firefox add-on — Key Master is an on page key price checker for the Steam store supporting G2Play, G2A and Kinguin.

How to Verify Safety

Review permissions on addons.mozilla.org. Check if source code is available.

You can also check the trust score via API: GET /v1/preflight?target=Key Master

Key Safety Concerns for Firefox add-ons

When evaluating any Firefox add-on, watch for: excessive permissions, data harvesting.

Trust Assessment

Key Master has a Nerq Trust Score of 50/100 (C-) and has not yet reached Nerq trust threshold (70+). This score is based on automated analysis of security, maintenance, community, and quality signals.

Key Takeaways

Key Master has a Trust Score of 50/100 (C-).
Review carefully before use — below trust threshold.
Always verify independently using the Nerq API.

Frequently Asked Questions

Is Key Master safe?

Use with some caution. Key Master has a Nerq Trust Score of 50.5/100 (C-). Strongest signal: security (90/100). Score based on security (90/100), popularity (15/100).

What is Key Master's trust score?

Key Master: 50.5/100 (C-). Score based on: security (90/100), popularity (15/100). Scores update as new data becomes available. API: GET nerq.ai/v1/preflight?target=Key Master

What are safer alternatives to Key Master?

In the firefox category, more Firefox add-ons are being analyzed — check back soon. Key Master scores 50.5/100.

What permissions does Key Master need?

Review Key Master's requested permissions carefully. Extensions requesting 'Read and change all data on all websites' carry the highest risk. Current trust score: 50.5/100.

Is Key Master open source?

Check Key Master's listing for source code availability. Open-source Firefox add-ons can be independently audited. Trust score: 50.5/100.

API: /v1/preflight Trust Badge API Docs

Disclaimer: Nerq trust scores are automated assessments based on publicly available signals. They are not endorsements or guarantees. Always conduct your own due diligence.