List all SSH keys in the project. By default fetches all pages (cap: ${PAGINATION_HARD_CAP_PAGES} pages × ${CLOUD_DEFAULT_PER_PAGE} per page = ${PAGINATION_HARD_CAP_PAGES * CLOUD_DEFAULT_PER_PAGE} keys). Supply explicit \
AI agents call hetzner_list_ssh_keys to retrieve information from Hetzner 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 queries existing SSH keys without creating, modifying, or deleting data. It has no side effects and presents minimal risk if an agent misuses it; the worst outcome is information disclosure of SSH key metadata. This is a classic Read operation.
From the tool's definition Tool name is 'list' and description states 'List all SSH keys in the project' — a retrieval operation with no modification or side effects.
Attacks that exploit this kind of access
List all SSH keys in the project. By default fetches all pages (cap: ${PAGINATION_HARD_CAP_PAGES} pages × ${CLOUD_DEFAULT_PER_PAGE} per page = ${PAGINATION_HARD_CAP_PAGES * CLOUD_DEFAULT_PER_PAGE} keys). Supply explicit \. It is categorised as a Read tool in the Hetzner MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Hetzner MCP Server MCP server in PolicyLayer and add a rule for hetzner_list_ssh_keys: 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 Hetzner MCP Server. Nothing to install.
hetzner_list_ssh_keys 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 hetzner_list_ssh_keys 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 hetzner_list_ssh_keys. 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.
hetzner_list_ssh_keys is provided by the Hetzner MCP Server MCP server (jurislm/hetzner-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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