Is Rainbow Safe?
Rainbow — Nerq Trust Score 68.2/100 (B- grade). Based on analysis of 2 trust dimensions, it is generally safe but has some concerns. Last updated: 2026-04-30.
Use Rainbow with some caution. Rainbow is a Ruby gem with a Nerq Trust Score of 68.2/100 (B-), based on 3 independent data dimensions. Below the recommended threshold of 70. Security: 90/100. Popularity: 100/100. Data sourced from rubygems.org, GitHub, and NVD. Last updated: 2026-04-12. Machine-readable data (JSON).
Is Rainbow safe?
CAUTION — Rainbow has a Nerq Trust Score of 68.2/100 (B-). 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.
What is Rainbow's trust score?
Rainbow has a Nerq Trust Score of 68.2/100, earning a B- grade. This score is based on 2 independently measured dimensions including security, maintenance, and community adoption.
What are the key security findings for Rainbow?
Rainbow's strongest signal is popularity at 100/100. No known vulnerabilities have been detected. It has not yet reached the Nerq Verified threshold of 70+.
What is Rainbow and who maintains it?
| Author | Marcin Kulik, Olle Jonsson |
| Category | Ruby Gems |
| Source | N/A |
Rainbow Across Platforms
Same developer/company in other registries:
Similar Gems by Trust Score
Safety Guide: Rainbow
What is Rainbow?
Rainbow is a Ruby gem — Colorize printed text on ANSI terminals.
How to Verify Safety
Run bundle audit. Review on rubygems.org.
You can also check the trust score via API: GET /v1/preflight?target=rainbow
Key Safety Concerns for Ruby gem
When evaluating any Ruby gem, watch for: dependency vulnerabilities, maintenance status.
Trust Assessment
Rainbow has a Nerq Trust Score of 68/100 (B-) 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
- Rainbow has a Trust Score of 68/100 (B-).
- Review carefully before use — below trust threshold.
- Always verify independently using the Nerq API.
Detailed Score Analysis
| Dimension | Score |
|---|---|
| Security | 90/100 |
| Maintenance | 50/100 |
| Popularity | 100/100 |
| Quality | 65/100 |
| Community | 35/100 |
Based on 5 dimensions. Data from rubygems.org, GitHub, and NVD.
What data does Rainbow collect?
Rainbow is a Ruby gem maintained by Marcin Kulik, Olle Jonsson. It receives approximately 668,502,456 weekly downloads. Licensed under MIT.
As a development package, Rainbow does not directly collect end-user personal data. However, applications built with it may collect data depending on implementation. Privacy score: 80/100.
Review the package's dependencies for potential supply chain risks. Run your package manager's audit command regularly.
Full analysis: Rainbow Privacy Report · Privacy review
Is Rainbow secure?
Security score: 90/100. This meets the recommended security threshold for production use.
Nerq monitors this entity against NVD, OSV.dev, and registry-specific vulnerability databases for ongoing security assessment.
Full analysis: Rainbow Security Report
Rainbow Across Platforms
Same developer/company in other registries:
How we calculated this score
Rainbow's trust score of 68.2/100 (B-) is computed from rubygems.org, GitHub, and NVD. The score reflects 5 independent dimensions: security (90/100), maintenance (50/100), popularity (100/100), quality (65/100), community (35/100). Each dimension is weighted equally to produce the composite trust score.
Nerq analyzes over 7.5 million entities across 26 registries using the same methodology, enabling direct cross-entity comparison. Scores are updated continuously as new data becomes available.
This page was last reviewed on April 30, 2026. Data version: 1.0.
Full methodology documentation · Machine-readable data (JSON API)
Frequently Asked Questions
Is Rainbow Safe?
What is Rainbow's trust score?
What are safer alternatives to Rainbow?
Does Rainbow have known vulnerabilities?
Is Rainbow actively maintained?
Popular in Ruby Gems
See Also
Disclaimer: Nerq trust scores are automated assessments based on publicly available signals. They are not endorsements or guarantees. Always conduct your own due diligence.