arvan_create_ssh_key
Register an SSH public key so it can be injected into servers at create.
This record as markdown: /tools/dwin-gharibi-arvancloud-mcp/arvan-create-ssh-key.md
What arvan_create_ssh_key does on ArvanCloud MCP Server
AI agents use arvan_create_ssh_key to create or update resources in ArvanCloud MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your ArvanCloud MCP Server environment.
Why arvan_create_ssh_key is rated Medium
Registering an SSH public key is a write operation that creates a new authentication credential in the ArvanCloud platform. While not destructive (keys can be replaced/removed), this is a state-changing action that modifies the platform's authentication posture.
From the tool's definition Tool description states 'Register an SSH public key' — this creates/stores a new security credential in the cloud platform that will be persisted and used for server access. The action is reversible (the key can be deleted or replaced).
Attacks that exploit this kind of access
The rule that runs arvan_create_ssh_key safely
PolicyLayer is an MCP gateway: it sits between your AI agents and ArvanCloud MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For arvan_create_ssh_key, this is the rule to start with:
arvan_create_ssh_key stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect ArvanCloud MCP Server, apply this rule, and every arvan_create_ssh_key call is checked against it from then on.
Questions about arvan_create_ssh_key
Register an SSH public key so it can be injected into servers at create. It is categorised as a Write tool in the ArvanCloud MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the ArvanCloud MCP Server MCP server in PolicyLayer and add a rule for arvan_create_ssh_key: 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 ArvanCloud MCP Server. Nothing to install.
arvan_create_ssh_key is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the arvan_create_ssh_key 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 arvan_create_ssh_key. 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.
arvan_create_ssh_key is provided by the ArvanCloud MCP Server MCP server (dwin-gharibi/arvancloud-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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