Adds advisory quarantine notices to untrusted tool outputs after PostToolUse events.
npx skills add https://github.com/linenoize/topia --skill quarantine
Please help me install this Agent Skill. Skill: quarantine Source: https://github.com/linenoize/topia/tree/main/skills/quarantine Command: npx skills add https://github.com/linenoize/topia --skill quarantine
It protects the assistant from treating untrusted external content as instructions by adding an advisory quarantine notice after tool results arrive.
Ask the assistant to enable quarantine for this session so untrusted tool results are marked and reviewed as data before any further action.
High-intent search queries and answers about installing and using this skill.
To prevent prompt injection from untrusted MCP tool results, this advisory workflow wraps outputs from MCP namespaces, web fetches, and uploaded files with a quarantine notice so the assistant treats content as data rather than directives.
A quarantine notice for web fetch outputs works by applying a PostToolUse advisory that flags retrieved content as untrusted data, preventing the assistant from executing hidden external directives or prompt injections.
Yes, you can configure a trusted MCP allowlist to bypass quarantine checks. The workflow uses this allowlist alongside a per-session disable switch and privacy-preserving telemetry to make advisory behavior configurable and auditable without blocking tool dispatch.
To mark uploaded files as untrusted data in an assistant session, ask the assistant to enable quarantine. This applies an advisory notice to file reads and outputs, ensuring content is reviewed strictly as data before any further action.
No, the quarantine workflow does not block tool dispatch for untrusted content. It implements an advisory PostToolUse workflow that adds a quarantine notice after the tool executes, preserving normal functionality while protecting the assistant from external instructions.
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