nix-profile-manager
Expert guidance for agents to manage local Nix profiles for installing tools and dependencies. Covers flakes, profile management, package searching, and registry configuration.
64
52%
Does it follow best practices?
Impact
74%
1.42xAverage score across 3 eval scenarios
Advisory
Suggest reviewing before use
Optimize this skill with Tessl
npx tessl skill review --optimize ./nix-profile-manager/SKILL.mdSecurity
2 findings — 2 medium severity. This skill can be installed but you should review these findings before use.
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's workflow and references (e.g., SKILL.md and references/flakes.md) explicitly instruct the agent to search and evaluate remote flakes and registry entries such as "github:user/repo" and to run `nix search`/`nix flake show` against public GitHub/flakes, meaning the agent will fetch and interpret arbitrary public third‑party (user-generated) content as part of its installation/decision workflow.
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: 0.70). This skill invokes flake references at runtime (e.g., git+https://github.com/user/repo.git and github:user/repo) which Nix will fetch and evaluate/build on the host, so remote flake content can execute code and the skill depends on those external URLs to install packages.
- Repository
- YPares/agent-skills
- Commit
aed1afb
- Audited
- Security analysis
Is this your skill?
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