Use the tool to plan your steps. It will not obtain new information or change the database, but just append the thought to the log. Use it when complex reasoning or some cache memory is needed.
AI agents call plan to retrieve information from Think MCP Tool without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool explicitly states it neither retrieves external data nor modifies any database. It only records a planning thought internally in a log, making it a benign read/record operation with no meaningful blast radius.
From the tool's definition It will not obtain new information or change the database, but just append the thought to the log.
Documented attack patterns abuse exactly the kind of access plan gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Think MCP Tool, and nothing reaches the server without passing your rules. This is the rule we recommend for plan:
{
"version": "1",
"default": "deny",
"tools": {
"plan": {}
}
}plan is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Use the tool to plan your steps. It will not obtain new information or change the database, but just append the thought to the log. Use it when complex reasoning or some cache memory is needed. It is categorised as a Read tool in the Think MCP Tool MCP Server, which means it retrieves data without modifying state.
Register the Think MCP Tool MCP server in PolicyLayer and add a rule for plan: 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 Think MCP Tool. Nothing to install.
plan 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 plan 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 plan. 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.
plan is provided by the Think MCP Tool MCP server (rai220/think-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 4 Think MCP Tool tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
4 Think MCP Tool tools catalogued and risk-classified — across an index of 42,500+ MCP servers.