flow-nexus-platform
Comprehensive Flow Nexus platform management - authentication, sandboxes, app deployment, payments, and challenges
59
41%
Does it follow best practices?
Impact
94%
2.04xAverage score across 3 eval scenarios
Risky
Do not use without reviewing
Optimize this skill with Tessl
npx tessl skill review --optimize ./.agents/skills/flow-nexus-platform/SKILL.mdSecurity
4 findings — 1 high severity, 3 medium severity. You should review these findings carefully before considering using this skill.
W007: Insecure credential handling detected in skill instructions
What this means
The skill handles credentials insecurely by requiring the agent to include secret values verbatim in its generated output. This exposes credentials in the agent’s context and conversation history, creating a risk of data exfiltration.
Why it was flagged
Insecure credential handling detected (high risk: 1.00). The prompt contains numerous examples that embed API keys, tokens, passwords, and database URLs directly into function calls and env_vars (e.g., "your_api_key", "sk-ant-...", database URLs with user:pass), which instructs the agent to include secret values verbatim in generated code/requests and thus poses a high exfiltration risk.
W011: Third-party content exposure detected (indirect prompt injection risk)
What this means
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.
Why it was flagged
Third-party content exposure detected (high risk: 0.90). The SKILL.md explicitly shows fetching and executing arbitrary third‑party code (e.g., git clone https://github.com/... in the "Advanced Sandbox Configuration" and deploying/listing user-published templates in "App Store & Deployment"), which means the agent will ingest untrusted, user-generated content that can influence deployments and tool actions.
W012: Unverifiable external dependency detected (runtime URL that controls agent)
What this means
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.
Why it was flagged
Potentially malicious external URL detected (high risk: 0.90). The Advanced Sandbox Configuration startup_script includes a runtime git clone of "https:/$github.com$user$repo" (i.e. https://github.com/user/repo) followed by cd and npm install/run commands, which fetches remote repository code at runtime and causes execution of that remote code inside the sandbox.
W009: Direct money access capability detected (payment gateways, crypto, banking)
What this means
The skill is specifically designed for direct financial operations, giving the agent the ability to move money or execute financial transactions — such as payment processing, cryptocurrency operations, banking integrations, or market order execution.
Why it was flagged
Direct money access detected (high risk: 1.00). The skill includes explicit payment and credit-management APIs: mcp__flow-nexus__create_payment_link(...) which returns a secure Stripe payment URL (explicit payment gateway integration), mcp__flow-nexus__configure_auto_refill(...) to automatically purchase credits, and mcp__flow-nexus__app_store_earn_ruv(...) which programmatically adjusts user credits. These are specific, purpose-built financial operations (creating payment links, auto-purchasing credits, and credit transfers), not generic tooling, and thus constitute direct financial execution capability.
- Repository
- ruvnet/ruflo
- Commit
398f7c2
- Audited
- Security analysis
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