List all available extensions.
AI agents call mittwald_extension_list to retrieve information from Mittwald MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and displays information about available extensions without modifying, creating, deleting, or executing any operations. It is a pure read operation similar to a list or fetch command. The low severity reflects that merely listing extensions poses minimal risk even if misused by an AI agent.
From the tool's definition Tool name 'mittwald_extension_list' and description 'List all available extensions' indicate a retrieval/query operation with no side effects.
Attacks that exploit this kind of access
List all available extensions. It is categorised as a Read tool in the Mittwald MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Mittwald MCP Server MCP server in PolicyLayer and add a rule for mittwald_extension_list: 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 Mittwald MCP Server. Nothing to install.
mittwald_extension_list 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 mittwald_extension_list 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 mittwald_extension_list. 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.
mittwald_extension_list is provided by the Mittwald MCP Server MCP server (mittwald/mcp-server). 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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