new
Create a new project to start development quickly
45
47%
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Critical
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tessl review fix ./lib/clacky/default_skills/new/SKILL.mdSecurity
3 findings: 2 critical severity, 1 medium severity. Installing this skill is not recommended: please review these findings carefully if you do intend to do so.
E005: Suspicious download URL detected in skill instructions.
What this means
Detected a suspicious URL in the skill instructions that could lead the agent to download and execute malicious scripts or binaries. This includes links to executables from untrusted sources, typosquatting of official packages, URL shorteners that obscure the destination, and personal file hosting services.
Why it was flagged
The GitHub repo URL is suspicious because the installer script clones and later executes code from that external repository (potentially running arbitrary/setup scripts), while the http://localhost:3000 URL is just a local development address and not a download source.
E006: Malicious code pattern detected in skill scripts.
What this means
Detected high-risk code patterns in the skill content — including its prompts, tool definitions, and resources — such as data exfiltration, backdoors, remote code execution, credential theft, system compromise, supply chain attacks, and obfuscation techniques.
Why it was flagged
The script clones and executes code from an external GitHub template and an unverified local installer ($HOME/.clacky/scripts/install_rails_deps.sh) and then removes the original .git history—this enables remote code execution and supply‑chain abuse without verification or user prompts.
W013: Attempt to modify system services in skill instructions.
What this means
The skill prompts the agent to compromise the security or integrity of the user’s machine by modifying system-level services or configurations, such as obtaining elevated privileges, altering startup scripts, or changing system-wide settings.
Why it was flagged
The skill tells the agent to run a provided setup script that "automatically installs missing dependencies without prompting" (Ruby, Node.js, PostgreSQL), which implies modifying system packages/services and likely requires elevated privileges and service changes, so it pushes actions that can change the machine state.
Low
Low-risk findings.
1 low severity finding. Worth noting, but not necessarily harmful.
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
The create_rails_project.sh script performs a runtime git clone of https://github.com/clacky-ai/rails-template-7x-starter.git and then moves and executes files from that template (including running ./bin/setup), so remote code fetched from that URL is executed and controls the setup.
- Repository
- clacky-ai/openclacky
- Commit
db23154
- Audited
- Security analysis
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