Upload a file from the local machine to the remote SSH server via SFTP. Returns: Success message with transfer details Use cases: - Deploy configuration files to servers - Upload scripts for remote execution - Transfer data files for processing
AI agents use ssh_upload to create or update resources in Playwright Stealth — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Playwright Stealth environment.
This tool creates or modifies files on remote servers, which is a Write operation. Severity is high because uploaded scripts or configuration files could alter system behavior, affect services, or introduce vulnerabilities if an AI agent uploads malicious content. The blast radius extends to any remote system the SSH server can access.
From the tool's definition Tool uploads files to remote SSH server via SFTP; description states 'Upload a file from the local machine to the remote SSH server' and use cases include 'Deploy configuration files to servers' and 'Upload scripts for remote execution', indicating file…
Documented attack patterns abuse exactly the kind of access ssh_upload gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Playwright Stealth, and nothing reaches the server without passing your rules. This is the rule we recommend for ssh_upload:
{
"version": "1",
"default": "deny",
"tools": {
"ssh_upload": {
"limits": [
{
"counter": "ssh_upload_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}ssh_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.
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Upload a file from the local machine to the remote SSH server via SFTP. Returns: Success message with transfer details Use cases: - Deploy configuration files to servers - Upload scripts for remote execution - Transfer data files for processing. It is categorised as a Write tool in the Playwright Stealth MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Playwright Stealth MCP server in PolicyLayer and add a rule for ssh_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 Playwright Stealth. Nothing to install.
ssh_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 ssh_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 ssh_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.
ssh_upload is provided by the Playwright Stealth MCP server (pulsemcp/mcp-servers). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Playwright Stealth, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
68 Playwright Stealth tools catalogued and risk-classified — across an index of 43,000+ MCP servers.