Search Kernel platform documentation for guides, tutorials, and API references. Use when you need to understand how Kernel features work or troubleshoot issues.
AI agents call search_docs to retrieve information from Kernel MCP Server 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 static documentation content without side effects. It is purely informational and cannot modify, execute, or delete data. The lowest risk category applies.
From the tool's definition Tool description states it "Search[es] Kernel platform documentation for guides, tutorials, and API references" with no mention of modification, deletion, or execution capabilities.
Documented attack patterns abuse exactly the kind of access search_docs gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Kernel MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for search_docs:
{
"version": "1",
"default": "deny",
"tools": {
"search_docs": {}
}
}search_docs is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Search Kernel platform documentation for guides, tutorials, and API references. Use when you need to understand how Kernel features work or troubleshoot issues. It is categorised as a Read tool in the Kernel MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Kernel MCP Server MCP server in PolicyLayer and add a rule for search_docs: 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 Kernel MCP Server. Nothing to install.
search_docs 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 search_docs 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 search_docs. 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.
search_docs is provided by the Kernel MCP Server MCP server (kernel/kernel-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Kernel MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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16 Kernel MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.