[DISCOVERY] Search the Arch User Repository (AUR) for packages with smart ranking. ⚠️ WARNING: AUR packages are user-produced and potentially unsafe. Returns package info including votes, maintainer, and last update. Always check official repos first using get_official_package_info. Use case: Bef...
AI agents call search_aur to retrieve information from Arch Linux without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves package metadata from the AUR without modifying, executing, or deleting anything. The warning about AUR packages being potentially unsafe is a general security advisory about package sources, not a description of what this tool does—it merely searches and returns information.
From the tool's definition Tool is explicitly marked [DISCOVERY] and performs search functionality. Description states it 'Search[es] the Arch User Repository (AUR) for packages' and 'Returns package info including votes, maintainer, and last update.' These are retrieval operations…
Documented attack patterns abuse exactly the kind of access search_aur gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Arch Linux, and nothing reaches the server without passing your rules. This is the rule we recommend for search_aur:
{
"version": "1",
"default": "deny",
"tools": {
"search_aur": {}
}
}search_aur is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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[DISCOVERY] Search the Arch User Repository (AUR) for packages with smart ranking. ⚠️ WARNING: AUR packages are user-produced and potentially unsafe. Returns package info including votes, maintainer, and last update. Always check official repos first using get_official_package_info. Use case: Before installing. It is categorised as a Read tool in the Arch Linux MCP Server, which means it retrieves data without modifying state.
Register the Arch Linux MCP server in PolicyLayer and add a rule for search_aur: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Arch Linux. Nothing to install.
search_aur is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the search_aur rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for search_aur. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
search_aur is provided by the Arch Linux MCP server (nihalxkumar/arch-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 22 Arch Linux tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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22 Arch Linux tools catalogued and risk-classified — across an index of 42,500+ MCP servers.