Browse MCP servers from the PulseMCP Sub-Registry. Returns a paginated list of active and deprecated servers with their names, descriptions, and metadata. Deleted servers are excluded by default. Use search to filter by name or description. Use cursor for pagination through large result sets.
AI agents call list_servers to retrieve information from Playwright Stealth 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 data about available MCP servers from a registry without side effects. It is a straightforward read operation that allows browsing server metadata. The pagination and search parameters are standard retrieval mechanisms. No data is created, modified, deleted, or executed—only information is returned to the caller.
From the tool's definition Tool returns paginated list of MCP servers with names, descriptions, and metadata. Uses search and cursor for filtering/pagination. No modification, deletion, or execution implied—pure data retrieval.
Documented attack patterns abuse exactly the kind of access list_servers 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 list_servers:
{
"version": "1",
"default": "deny",
"tools": {
"list_servers": {}
}
}list_servers is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Browse MCP servers from the PulseMCP Sub-Registry. Returns a paginated list of active and deprecated servers with their names, descriptions, and metadata. Deleted servers are excluded by default. Use search to filter by name or description. Use cursor for pagination through large result sets. It is categorised as a Read tool in the Playwright Stealth MCP Server, which means it retrieves data without modifying state.
Register the Playwright Stealth MCP server in PolicyLayer and add a rule for list_servers: 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.
list_servers 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 list_servers 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 list_servers. 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.
list_servers 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.
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68 Playwright Stealth tools catalogued and risk-classified — across an index of 43,000+ MCP servers.