Train and deploy neural networks in distributed E2B sandboxes with Flow Nexus
57
37%
Does it follow best practices?
Impact
96%
7.38xAverage score across 3 eval scenarios
Advisory
Suggest reviewing before use
Optimize this skill with Tessl
npx tessl skill review --optimize ./ai-ml/flow-nexus-neural/SKILL.mdSecurity
2 findings — 2 medium severity. This skill can be installed but you should review these findings before use.
The skill exposes the agent to untrusted, user-generated content from public third-party sources, creating a risk of indirect prompt injection. This includes browsing arbitrary URLs, reading social media posts or forum comments, and analyzing content from unknown websites.
Third-party content exposure detected (high risk: 0.80). The SKILL.md explicitly includes a "Template Marketplace" workflow (mcp__flow-nexus__neural_list_templates, mcp__flow-nexus__neural_deploy_template and the https://flow-nexus.ruv.io/templates URL) that fetches and acts on public marketplace templates (likely user-contributed/untrusted) which the agent reads and can use to drive deployments and training, so third-party content could influence tool use.
The skill fetches instructions or code from an external URL at runtime, and the fetched content directly controls the agent’s prompts or executes code. This dynamic dependency allows the external source to modify the agent’s behavior without any changes to the skill itself.
Potentially malicious external URL detected (high risk: 0.80). The skill's prerequisites require running "npx flow-nexus@latest" (shown as "claude mcp add flow-nexus npx flow-nexus@latest mcp start" and "npx flow-nexus@latest register"), which at runtime fetches and executes remote npm package code (npm registry: https://registry.npmjs.org/flow-nexus) that the skill depends on, so it is a runtime external code execution dependency.
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