Returns a complete guide to Local MCP: what it does, how it works, when to use the Cloud MCP connector vs the lmcp CLI, and what each tool in this connector is for. Call this first if you are unsure how to proceed.
Part of the Local MCP server.
Free to start. No card required.
AI agents use help to create or modify resources in Local MCP. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.
Without a policy, an AI agent could call help repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Local MCP.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"help": {
"limits": [
{
"counter": "help_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Local MCP policy for all 7 tools.
These attack patterns abuse exactly the kind of access help gives an agent. Each links to the full case and the policy that stops it:
Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Returns a complete guide to Local MCP: what it does, how it works, when to use the Cloud MCP connector vs the lmcp CLI, and what each tool in this connector is for. Call this first if you are unsure how to proceed.. It is categorised as a Write tool in the Local MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Local MCP server in PolicyLayer and add a rule for help: 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 Local MCP. Nothing to install.
help 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 help 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 help. 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.
help is provided by the Local MCP server (local-mcp/local-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 7 Local MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
4,600+ MCP servers and 31,000+ tools scanned and risk-classified.