CtrlK
BlogDocsLog inGet started
Tessl Logo

coding-agent

Run Codex CLI, Claude Code, OpenCode, or Pi Coding Agent via background process for programmatic control.

65

Quality

58%

Does it follow best practices?

Impact

Pending

No eval scenarios have been run

SecuritybySnyk

Advisory

Suggest reviewing before use

Optimize this skill with Tessl

npx tessl skill review --optimize ./skills/coding-agent/SKILL.md
SKILL.md
Quality
Evals
Security

Security

3 findings — 3 medium severity. This skill can be installed but you should review these findings before use.

Medium

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). SKILL.md explicitly instructs cloning and fetching public GitHub repositories (e.g., "git clone https://github.com/user/repo.git $REVIEW_DIR" and "git fetch origin '+refs/pull/*/head:...') and then running coding agents (Codex/claude/pi) in those workdirs, so the agent will read and act on untrusted, user-generated repo/PR content that could embed instructions influencing tool behavior.

Report incorrect finding
Medium

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 skill explicitly runs git clone at runtime (git clone https://github.com/user/repo.git $REVIEW_DIR) and then invokes codex review/git-diff on that checked-out content, so remote repository data is fetched during runtime and injected into the agent's context, directly influencing its prompts and actions.

Medium

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

Attempt to modify system services in skill instructions detected (medium risk: 0.60). The prompt explicitly encourages running coding agents with flags that bypass sandboxing/approvals (e.g. --yolo) and exposes an "elevated" host mode while showing examples of running arbitrary shell commands (including global npm installs and background processes), which enables the agent to modify the host state even though it does not directly instruct creating users, editing system-level configs, or invoking sudo; this is a moderate-to-high risk of compromising the machine.

Repository
deepgram/dglabs-deepclaw
Audited
Security analysis
Snyk

Is this your skill?

If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.