AI agents call greet to retrieve information from MCP from Scratch Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a basic query operation that retrieves and returns a greeting string. It does not modify, create, delete, or execute any operations with external effects. The dynamic registration aspect does not change the fundamental nature of what the tool does—return a static greeting response. This is characteristic of a Read category tool with minimal security risk.
From the tool's definition Tool name 'greet' and description 'Returns a short greeting (registered dynamically)' indicate a simple data retrieval operation with no side effects.
Documented attack patterns abuse exactly the kind of access greet gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and MCP from Scratch Server, and nothing reaches the server without passing your rules. This is the rule we recommend for greet:
{
"version": "1",
"default": "deny",
"tools": {
"greet": {}
}
}greet is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Returns a short greeting (registered dynamically). It is categorised as a Read tool in the MCP from Scratch Server MCP Server, which means it retrieves data without modifying state.
Register the MCP from Scratch Server MCP server in PolicyLayer and add a rule for greet: 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 MCP from Scratch Server. Nothing to install.
greet 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 greet 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 greet. 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.
greet is provided by the MCP from Scratch Server MCP server (pguso/mcp-from-scratch). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from MCP from Scratch Server, 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.
12 MCP from Scratch Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.