SECURITY REPORT · EXTENSHI SCAN
Gastly | Ethereum Gas Tool
Firefox extension·by Mark OD
83
/ 100 SAFETY SCORE
CAUTION
Mostly fine, but a few things worth reviewing before you install.
Automated analysis of publicly available code — not a professional security audit. It may produce false positives and does not prove an extension is unsafe or safe. Treat it as one signal among many. Disclaimer · Report an issue
How it ranks
Gastly | Ethereum Gas Tool's safety score vs every other extension we've scanned
Globally
47%of extensions carry more risk
Riskier ←→ Safer
Ranked against 409,539 extensions
In Alerts & Updates
25%of alerts & updates extensions carry more risk
Riskier ←→ Safer
Ranked against 7,121 alerts & updates extensions
Findings
17
median 4Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
1
median 3Declared in manifest
Active users
33
median 1vs category median
Findings breakdown
Automated security signal · 17 distinct issues across 6 severities
17
distinct issues
detected
detected
Scanners reported 20 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical00%
High16%
Needs Review00%
Medium529%
Low741%
Info424%
Permissions requested
1 permission declared
No risky permissions
1 permission requested — none are flagged as risky.
Medium
Store local data
Can save data locally in the browser for persistence
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Scan performed by extenshi.io · Aug 7, 2026
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