Is Code Runner Safe?

Is Code Runner safe?

NO — USE WITH CAUTION — Code Runner has a Nerq Trust Score of 40.4/100 (E). It has below-average trust signals with significant gaps in security, maintenance, or documentation. Not recommended for production use without thorough manual review and additional security measures.

What Is Code Runner?

Code Runner is a software tool in the uncategorized category: Code Runner MCP Server which can run code in various programming languages.. Nerq Trust Score: 40/100 (E).

Nerq independently analyzes every software tool, app, and extension across multiple trust signals including security vulnerabilities, maintenance activity, license compliance, and community adoption.

How Nerq Assesses Code Runner's Safety

Nerq evaluates every software tool across 13+ independent trust signals drawn from public sources including GitHub, NVD, OSV.dev, OpenSSF Scorecard, and package registries. These signals are grouped into five core dimensions: Security (known CVEs, dependency vulnerabilities, security policies), Maintenance (commit frequency, release cadence, issue response times), Documentation (README quality, API docs, examples), Compliance (license, regulatory alignment across 52 jurisdictions), and Community (stars, forks, downloads, ecosystem integrations).

Code Runner receives an overall Trust Score of 40.4/100 (E), which Nerq considers low. This is below the Nerq Verified threshold of 70. We recommend additional due diligence before production deployment.

Nerq updates trust scores continuously as new data becomes available. To get the latest assessment, query the API: GET nerq.ai/v1/preflight?target=io.github.formulahendry/code-runner

Each dimension is weighted according to its importance for the tool's category. For example, Security and Maintenance carry higher weight for tools that handle sensitive data or execute code, while Community and Documentation are weighted more heavily for developer-facing libraries and frameworks. This ensures that Code Runner's score reflects the risks most relevant to its actual usage patterns. The final score is a weighted average across all five dimensions, normalized to a 0-100 scale with letter grades from A (highest) to F (lowest).

Who Should Use Code Runner?

Code Runner is designed for:

• Developers and teams working with uncategorized tools
• Organizations evaluating AI tools for their stack
• Researchers exploring AI capabilities in this domain

Risk guidance: We recommend caution with Code Runner. The low trust score suggests potential risks in security, maintenance, or community support. Consider using a more established alternative for any production or sensitive workload.

How to Verify Code Runner's Safety Yourself

While Nerq provides automated trust analysis, we recommend these additional steps before adopting any software tool:

1. Check the source code — Review the repository security policy, open issues, and recent commits for signs of active maintenance.
2. Scan dependencies — Use tools like npm audit, pip-audit, or snyk to check for known vulnerabilities in Code Runner's dependency tree.
3. Review permissions — Understand what access Code Runner requires. Software tools should follow the principle of least privilege.
4. Test in isolation — Run Code Runner in a sandboxed environment before granting access to production data or systems.
5. Monitor continuously — Use Nerq's API to set up automated trust checks: GET nerq.ai/v1/preflight?target=io.github.formulahendry/code-runner
6. Review the license — Confirm that Code Runner's license is compatible with your intended use case. Pay attention to restrictions on commercial use, redistribution, and derivative works. Some AI tools use dual licensing or have separate terms for enterprise customers that differ from the open-source license.
7. Check community signals — Look at the project's issue tracker, discussion forums, and social media presence. A healthy community actively reports bugs, contributes fixes, and discusses security concerns openly. Low community engagement may indicate limited peer review of the codebase.

Common Safety Concerns with Code Runner

When evaluating whether Code Runner is safe, consider these category-specific risks:

Best Practices for Using Code Runner Safely

Whether you're an individual developer or an enterprise team, these practices will help you get the most from Code Runner while minimizing risk:

When Should You Avoid Code Runner?

Even promising tools aren't right for every situation. Consider avoiding Code Runner in these scenarios:

• Production environments handling sensitive customer data
• Regulated industries (healthcare, finance, government) without additional compliance review
• Mission-critical systems where downtime has significant business impact

For each scenario, evaluate whether Code Runner's trust score of 40.4/100 meets your organization's risk tolerance. We recommend running a manual security assessment alongside the automated Nerq score.

How Code Runner Compares to Industry Standards

Nerq indexes over 6 million software tools, apps, and packages across dozens of categories. Among uncategorized tools, the average Trust Score is 62/100. Code Runner's score of 40.4/100 is below the category average of 62/100.

This suggests that Code Runner trails behind many comparable uncategorized tools. Organizations with strict security requirements should evaluate whether higher-scoring alternatives better meet their needs.

Industry benchmarks matter because they contextualize a tool's safety profile. A score that looks moderate in isolation may actually represent strong performance within a challenging category — or vice versa. Nerq's category-relative analysis helps teams make informed decisions by showing not just absolute quality, but how a tool ranks against its direct peers.

Trust Score History

Nerq continuously monitors Code Runner and recalculates its Trust Score as new data becomes available. Our scoring engine ingests real-time signals from source repositories, vulnerability databases (NVD, OSV.dev), package registries, and community metrics. When a new CVE is published, a major release ships, or maintenance patterns change, Code Runner's score is updated within 24 hours.

Historical trust trends reveal whether a tool is improving, stable, or declining over time. A tool that consistently maintains or improves its score demonstrates ongoing commitment to security and quality. Conversely, a downward trend may signal reduced maintenance, growing technical debt, or unresolved vulnerabilities. To track Code Runner's score over time, use the Nerq API: GET nerq.ai/v1/preflight?target=io.github.formulahendry/code-runner&include=history

Nerq retains trust score snapshots at regular intervals, enabling trend analysis across weeks and months. Enterprise users can access detailed historical reports showing how each dimension — security, maintenance, documentation, compliance, and community — has evolved independently, providing granular visibility into which aspects of Code Runner are strengthening or weakening over time.

Key Takeaways

• Code Runner has a Trust Score of 40.4/100 (E) and is not yet Nerq Verified.
• Code Runner has significant trust gaps. Consider higher-rated alternatives unless specific requirements mandate its use.
• Among uncategorized tools, Code Runner scores below the category average of 62/100, suggesting room for improvement relative to peers.
• Always verify safety independently — use Nerq's Preflight API for automated, up-to-date trust checks before integration.