Low Risk

search_mcp_implementations

Search for MCP implementations (servers and clients) in the PulseMCP registry. This tool searches across: - Implementation names - Short descriptions - Full descriptions - Provider/organization names - Slugs and identifiers Returns a list of matching implementations with their metadata, including...

How to control search_mcp_implementations ↓

What search_mcp_implementations does on Playwright Stealth

AI agents call search_mcp_implementations 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.

Low Risk

Why search_mcp_implementations needs a policy

This tool queries a registry and returns structured metadata about MCP servers and clients. It performs no modifications, deletions, code execution, financial operations, or irreversible actions. It is a straightforward search/lookup operation typical of Read category tools.

From the tool's definition Tool description states it 'Search[es] for MCP implementations' and 'Returns a list of matching implementations with their metadata' — pure data retrieval with no side effects.

Documented attack patterns abuse exactly the kind of access search_mcp_implementations gives an agent:

How to control search_mcp_implementations

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 search_mcp_implementations:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "search_mcp_implementations": {}
  }
}

search_mcp_implementations is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

  1. Create a free account and register Playwright Stealth — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
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Related tools and policies

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Questions about search_mcp_implementations

What does the search_mcp_implementations tool do? +

Search for MCP implementations (servers and clients) in the PulseMCP registry. This tool searches across: - Implementation names - Short descriptions - Full descriptions - Provider/organization names - Slugs and identifiers Returns a list of matching implementations with their metadata, including: - Name, description, and slug - Type (server or client) - Status (draft, live, archived) - Classification (official, community, reference) - Implementation language - GitHub stars and popularity metrics - Associated MCP server/client IDs - PulseMCP web URL - Remote endpoints (for servers) - hosting platforms, transport methods, authentication - Canonical URLs - authoritative sources for the implementation Use cases: - Find existing MCP servers before creating a new one - Discover servers by functionality (e.g.,. It is categorised as a Read tool in the Playwright Stealth MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on search_mcp_implementations? +

Register the Playwright Stealth MCP server in PolicyLayer and add a rule for search_mcp_implementations: 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.

What risk level is search_mcp_implementations? +

search_mcp_implementations is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit search_mcp_implementations? +

Yes. Add a rate_limit block to the search_mcp_implementations 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.

How do I block search_mcp_implementations completely? +

Set action: deny in the PolicyLayer policy for search_mcp_implementations. 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.

What MCP server provides search_mcp_implementations? +

search_mcp_implementations 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.

Enforce policy on every Playwright Stealth tool call.

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.

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