List all available package data provider names.
AI agents call list_package_providers to retrieve information from Ubuntu MCP Servers without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and enumerates metadata about available data providers. It performs no modifications, deletions, or external operations. Listing available providers is a passive information retrieval operation with minimal blast radius if misused by an AI agent.
From the tool's definition Tool name is 'list_package_providers' and description states 'List all available package data provider names.' The verb 'list' and action of retrieving provider names indicates a read-only query with no side effects.
Attacks that exploit this kind of access
List all available package data provider names. It is categorised as a Read tool in the Ubuntu MCP Servers MCP Server, which means it retrieves data without modifying state.
Register the Ubuntu MCP Servers MCP server in PolicyLayer and add a rule for list_package_providers: 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 Ubuntu MCP Servers. Nothing to install.
list_package_providers 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 list_package_providers 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 list_package_providers. 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.
list_package_providers is provided by the Ubuntu MCP Servers MCP server (lvoytek/ubuntu-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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