setup-python-tools
MUST be used when adding Pyodide or Python tool support to a Flows app. Do NOT manually configure usePyodideRuntime or wire pythonRuntime into useAtlasChat — this skill handles pyodide installation, hook setup, loading UI, and chat hook wiring. Prerequisite: integrate-atlas-chat (vendored src/atlas-agent + atlas chat wiring). Triggers: Pyodide, Python tools, pythonRuntime, usePyodideRuntime, runPythonCode, Python execution, client-side Python.
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Critical
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Security
1 critical severity finding. Installing this skill is not recommended: please review these findings carefully if you do intend to do so.
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 skill enables executing arbitrary Python code fetched from an agent's remote config in the user's browser, auto-approves tool execution, and injects Cognite SDK credentials into that runtime—creating a high-risk remote code execution and data-exfiltration capability that can be abused as a backdoor.
Low
Low-risk findings.
2 low severity findings. Worth noting, but not necessarily harmful.
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
The required runtime path is that when the agent triggers a `runPythonCode` clientTool, the library fetches the Python tool’s code from the agent’s CDF config and executes it in Pyodide; that fetched tool body is outsider-authored free text (not authored by the operating user) and becomes LLM-visible context via the tool execution/result flow.
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 skill explicitly calls loadPyodide (which fetches Pyodide CDN artifacts at runtime) and states the library automatically fetches Python tool code from the agent's CDF config at runtime and executes it in Pyodide, meaning remote content is fetched during execution and runs as code.
- Repository
- cognitedata/builder-skills
- Commit
2a8d323
- Audited
- Security analysis
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