kali_upload
A write tool on the Zebbern Kali MCP server.
This record as markdown: /tools/zebbern-zebbern-kali-mcp/kali-upload.md
What kali_upload does on Zebbern Kali MCP
AI agents use kali_upload to create or update resources in Zebbern Kali MCP, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Zebbern Kali MCP environment.
Why kali_upload is rated Medium
Upload operations create or modify files, fitting the Write category. Severity is high because in the context of a penetration testing toolkit, uploading arbitrary files could introduce malicious payloads, exploitation tools, or data that could be used for further attacks—though the isolated container environment provides some containment.
From the tool's definition Tool name 'kali_upload' and context as part of a Kali Linux penetration testing toolkit indicates file upload capability.
Attacks that exploit this kind of access
The rule that runs kali_upload safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Zebbern Kali MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For kali_upload, this is the rule to start with:
kali_upload 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 Zebbern Kali MCP, apply this rule, and every kali_upload call is checked against it from then on.
Questions about kali_upload
kali_upload is a write tool on the Zebbern Kali MCP server. It is categorised as a Write tool in the Zebbern Kali MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Zebbern Kali MCP server in PolicyLayer and add a rule for kali_upload: 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 Zebbern Kali MCP. Nothing to install.
kali_upload 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 kali_upload 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 kali_upload. 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.
kali_upload is provided by the Zebbern Kali MCP server (zebbern/zebbern-kali-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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